diff options
Diffstat (limited to 'arch/mips/kernel')
47 files changed, 765 insertions, 612 deletions
diff --git a/arch/mips/kernel/apm.c b/arch/mips/kernel/apm.c index 15f46b4471fd..528e731049c1 100644 --- a/arch/mips/kernel/apm.c +++ b/arch/mips/kernel/apm.c @@ -10,7 +10,6 @@ * [This document is available from Microsoft at: * http://www.microsoft.com/hwdev/busbios/amp_12.htm] */ -#include <linux/config.h> #include <linux/module.h> #include <linux/poll.h> #include <linux/timer.h> @@ -260,7 +259,7 @@ static unsigned int apm_poll(struct file *fp, poll_table * wait) * has acknowledge does the actual suspend happen. */ static int -apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg) +apm_ioctl(struct inode * inode, struct file *filp, unsigned int cmd, unsigned long arg) { struct apm_user *as = filp->private_data; unsigned long flags; diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c index f1bb6a2dc5fc..ec28077d5ee2 100644 --- a/arch/mips/kernel/asm-offsets.c +++ b/arch/mips/kernel/asm-offsets.c @@ -8,7 +8,6 @@ * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. */ -#include <linux/config.h> #include <linux/compat.h> #include <linux/types.h> #include <linux/sched.h> diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c index d268827c62bd..c09337b947b9 100644 --- a/arch/mips/kernel/cpu-bugs64.c +++ b/arch/mips/kernel/cpu-bugs64.c @@ -6,7 +6,6 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ -#include <linux/config.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/ptrace.h> diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 8c2c359a05f4..9fbf8430c849 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -11,7 +11,6 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ -#include <linux/config.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/ptrace.h> @@ -39,15 +38,40 @@ static void r3081_wait(void) static void r39xx_wait(void) { - unsigned long cfg = read_c0_conf(); - write_c0_conf(cfg | TX39_CONF_HALT); + local_irq_disable(); + if (!need_resched()) + write_c0_conf(read_c0_conf() | TX39_CONF_HALT); + local_irq_enable(); } +/* + * There is a race when WAIT instruction executed with interrupt + * enabled. + * But it is implementation-dependent wheter the pipelie restarts when + * a non-enabled interrupt is requested. + */ static void r4k_wait(void) { - __asm__(".set\tmips3\n\t" - "wait\n\t" - ".set\tmips0"); + __asm__(" .set mips3 \n" + " wait \n" + " .set mips0 \n"); +} + +/* + * This variant is preferable as it allows testing need_resched and going to + * sleep depending on the outcome atomically. Unfortunately the "It is + * implementation-dependent whether the pipeline restarts when a non-enabled + * interrupt is requested" restriction in the MIPS32/MIPS64 architecture makes + * using this version a gamble. + */ +static void r4k_wait_irqoff(void) +{ + local_irq_disable(); + if (!need_resched()) + __asm__(" .set mips3 \n" + " wait \n" + " .set mips0 \n"); + local_irq_enable(); } /* The Au1xxx wait is available only if using 32khz counter or @@ -57,17 +81,17 @@ int allow_au1k_wait; static void au1k_wait(void) { /* using the wait instruction makes CP0 counter unusable */ - __asm__(".set mips3\n\t" - "cache 0x14, 0(%0)\n\t" - "cache 0x14, 32(%0)\n\t" - "sync\n\t" - "nop\n\t" - "wait\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - ".set mips0\n\t" + __asm__(" .set mips3 \n" + " cache 0x14, 0(%0) \n" + " cache 0x14, 32(%0) \n" + " sync \n" + " nop \n" + " wait \n" + " nop \n" + " nop \n" + " nop \n" + " nop \n" + " .set mips0 \n" : : "r" (au1k_wait)); } @@ -112,7 +136,6 @@ static inline void check_wait(void) case CPU_NEVADA: case CPU_RM7000: case CPU_RM9000: - case CPU_TX49XX: case CPU_4KC: case CPU_4KEC: case CPU_4KSC: @@ -126,6 +149,10 @@ static inline void check_wait(void) cpu_wait = r4k_wait; printk(" available.\n"); break; + case CPU_TX49XX: + cpu_wait = r4k_wait_irqoff; + printk(" available.\n"); + break; case CPU_AU1000: case CPU_AU1100: case CPU_AU1500: @@ -460,7 +487,7 @@ static inline unsigned int decode_config0(struct cpuinfo_mips *c) isa = (config0 & MIPS_CONF_AT) >> 13; switch (isa) { case 0: - switch ((config0 >> 10) & 7) { + switch ((config0 & MIPS_CONF_AR) >> 10) { case 0: c->isa_level = MIPS_CPU_ISA_M32R1; break; @@ -472,7 +499,7 @@ static inline unsigned int decode_config0(struct cpuinfo_mips *c) } break; case 2: - switch ((config0 >> 10) & 7) { + switch ((config0 & MIPS_CONF_AR) >> 10) { case 0: c->isa_level = MIPS_CPU_ISA_M64R1; break; @@ -549,7 +576,7 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c) return config3 & MIPS_CONF_M; } -static inline void decode_configs(struct cpuinfo_mips *c) +static void __init decode_configs(struct cpuinfo_mips *c) { /* MIPS32 or MIPS64 compliant CPU. */ c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER | @@ -597,8 +624,6 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c) break; case PRID_IMP_25KF: c->cputype = CPU_25KF; - /* Probe for L2 cache */ - c->scache.flags &= ~MIPS_CACHE_NOT_PRESENT; break; case PRID_IMP_34K: c->cputype = CPU_34K; diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index a9c6de1b9542..766655f35250 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -7,7 +7,6 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2001 MIPS Technologies, Inc. */ -#include <linux/config.h> #include <asm/asm.h> #include <asm/asmmacro.h> @@ -66,7 +65,7 @@ need_resched: #endif FEXPORT(ret_from_fork) - jal schedule_tail # a0 = task_t *prev + jal schedule_tail # a0 = struct task_struct *prev FEXPORT(syscall_exit) local_irq_disable # make sure need_resched and @@ -87,7 +86,7 @@ FEXPORT(restore_all) # restore full frame ori v1, v0, TCSTATUS_IXMT mtc0 v1, CP0_TCSTATUS andi v0, TCSTATUS_IXMT - ehb + _ehb mfc0 t0, CP0_TCCONTEXT DMT 9 # dmt t1 jal mips_ihb @@ -95,7 +94,7 @@ FEXPORT(restore_all) # restore full frame andi t3, t0, 0xff00 or t2, t2, t3 mtc0 t2, CP0_STATUS - ehb + _ehb andi t1, t1, VPECONTROL_TE beqz t1, 1f EMT @@ -105,7 +104,7 @@ FEXPORT(restore_all) # restore full frame xori v1, v1, TCSTATUS_IXMT or v1, v0, v1 mtc0 v1, CP0_TCSTATUS - ehb + _ehb xor t0, t0, t3 mtc0 t0, CP0_TCCONTEXT #endif /* CONFIG_MIPS_MT_SMTC */ @@ -114,6 +113,21 @@ FEXPORT(restore_all) # restore full frame RESTORE_AT RESTORE_STATIC FEXPORT(restore_partial) # restore partial frame +#ifdef CONFIG_TRACE_IRQFLAGS + SAVE_STATIC + SAVE_AT + SAVE_TEMP + LONG_L v0, PT_STATUS(sp) + and v0, 1 + beqz v0, 1f + jal trace_hardirqs_on + b 2f +1: jal trace_hardirqs_off +2: + RESTORE_TEMP + RESTORE_AT + RESTORE_STATIC +#endif RESTORE_SOME RESTORE_SP_AND_RET .set at diff --git a/arch/mips/kernel/gdb-low.S b/arch/mips/kernel/gdb-low.S index 5fd7a8af0c62..2c446063636a 100644 --- a/arch/mips/kernel/gdb-low.S +++ b/arch/mips/kernel/gdb-low.S @@ -3,11 +3,11 @@ * * Copyright (C) 1995 Andreas Busse */ -#include <linux/config.h> #include <linux/sys.h> #include <asm/asm.h> #include <asm/errno.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -121,6 +121,7 @@ LONG_S $31, GDB_FR_REG31(sp) CLI /* disable interrupts */ + TRACE_IRQS_OFF /* * Followed by the floating point registers @@ -291,7 +292,7 @@ ori t1, t2, TCSTATUS_IXMT mtc0 t1, CP0_TCSTATUS andi t2, t2, TCSTATUS_IXMT - ehb + _ehb DMT 9 # dmt t1 jal mips_ihb nop @@ -310,7 +311,7 @@ xori t1, t1, TCSTATUS_IXMT or t1, t1, t2 mtc0 t1, CP0_TCSTATUS - ehb + _ehb #endif /* CONFIG_MIPS_MT_SMTC */ LONG_L v0, GDB_FR_STATUS(sp) LONG_L v1, GDB_FR_EPC(sp) diff --git a/arch/mips/kernel/gdb-stub.c b/arch/mips/kernel/gdb-stub.c index 6ecbdc1fefd1..719d26968cb2 100644 --- a/arch/mips/kernel/gdb-stub.c +++ b/arch/mips/kernel/gdb-stub.c @@ -120,7 +120,6 @@ * breakpoints, single stepping, * printing variables, etc. */ -#include <linux/config.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/signal.h> diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index ff7af369f286..37fda3dcdfc5 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -8,12 +8,12 @@ * Copyright (C) 2001 MIPS Technologies, Inc. * Copyright (C) 2002 Maciej W. Rozycki */ -#include <linux/config.h> #include <linux/init.h> #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/cacheops.h> +#include <asm/irqflags.h> #include <asm/regdef.h> #include <asm/fpregdef.h> #include <asm/mipsregs.h> @@ -129,6 +129,7 @@ handle_vcei: NESTED(handle_int, PT_SIZE, sp) SAVE_ALL CLI + TRACE_IRQS_OFF PTR_LA ra, ret_from_irq move a0, sp @@ -214,9 +215,10 @@ NESTED(except_vec_vi_handler, 0, sp) mtc0 t0, CP0_TCCONTEXT xor t1, t1, t0 mtc0 t1, CP0_STATUS - ehb + _ehb #endif /* CONFIG_MIPS_MT_SMTC */ CLI + TRACE_IRQS_OFF move a0, sp jalr v0 j ret_from_irq @@ -289,11 +291,13 @@ NESTED(nmi_handler, PT_SIZE, sp) .endm .macro __build_clear_sti + TRACE_IRQS_ON STI .endm .macro __build_clear_cli CLI + TRACE_IRQS_OFF .endm .macro __build_clear_fpe @@ -301,6 +305,7 @@ NESTED(nmi_handler, PT_SIZE, sp) li a2, ~(0x3f << 12) and a2, a1 ctc1 a2, fcr31 + TRACE_IRQS_ON STI .endm @@ -366,7 +371,7 @@ NESTED(nmi_handler, PT_SIZE, sp) BUILD_HANDLER mdmx mdmx sti silent /* #22 */ BUILD_HANDLER watch watch sti verbose /* #23 */ BUILD_HANDLER mcheck mcheck cli verbose /* #24 */ - BUILD_HANDLER mt mt sti verbose /* #25 */ + BUILD_HANDLER mt mt sti silent /* #25 */ BUILD_HANDLER dsp dsp sti silent /* #26 */ BUILD_HANDLER reserved reserved sti verbose /* others */ diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S index bdf6f6eff721..8c6db0fc72f0 100644 --- a/arch/mips/kernel/head.S +++ b/arch/mips/kernel/head.S @@ -5,7 +5,7 @@ * * Copyright (C) 1994, 1995 Waldorf Electronics * Written by Ralf Baechle and Andreas Busse - * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003 Ralf Baechle + * Copyright (C) 1994 - 99, 2003, 06 Ralf Baechle * Copyright (C) 1996 Paul M. Antoine * Modified for DECStation and hence R3000 support by Paul M. Antoine * Further modifications by David S. Miller and Harald Koerfgen @@ -13,12 +13,12 @@ * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. */ -#include <linux/config.h> #include <linux/init.h> #include <linux/threads.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/regdef.h> #include <asm/page.h> #include <asm/mipsregs.h> @@ -96,7 +96,7 @@ /* Clear TKSU, leave IXMT */ xori t0, 0x00001800 mtc0 t0, CP0_TCSTATUS - ehb + _ehb /* We need to leave the global IE bit set, but clear EXL...*/ mfc0 t0, CP0_STATUS or t0, ST0_CU0 | ST0_EXL | ST0_ERL | \set | \clr diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c index 0cb8ed5662f3..ea36c8e8852c 100644 --- a/arch/mips/kernel/i8259.c +++ b/arch/mips/kernel/i8259.c @@ -51,7 +51,7 @@ static unsigned int startup_8259A_irq(unsigned int irq) return 0; /* never anything pending */ } -static struct hw_interrupt_type i8259A_irq_type = { +static struct irq_chip i8259A_irq_type = { .typename = "XT-PIC", .startup = startup_8259A_irq, .shutdown = shutdown_8259A_irq, @@ -120,7 +120,7 @@ int i8259A_irq_pending(unsigned int irq) void make_8259A_irq(unsigned int irq) { disable_irq_nosync(irq); - irq_desc[irq].handler = &i8259A_irq_type; + irq_desc[irq].chip = &i8259A_irq_type; enable_irq(irq); } @@ -327,7 +327,7 @@ void __init init_i8259_irqs (void) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &i8259A_irq_type; + irq_desc[i].chip = &i8259A_irq_type; } setup_irq(2, &irq2); diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c index 10d3644e3608..ab12c8f01518 100644 --- a/arch/mips/kernel/irixelf.c +++ b/arch/mips/kernel/irixelf.c @@ -999,8 +999,6 @@ static inline int maydump(struct vm_area_struct *vma) return 1; } -#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) - /* An ELF note in memory. */ struct memelfnote { diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c index a9bf6cc3abd1..2132485caa74 100644 --- a/arch/mips/kernel/irixsig.c +++ b/arch/mips/kernel/irixsig.c @@ -13,9 +13,11 @@ #include <linux/smp_lock.h> #include <linux/time.h> #include <linux/ptrace.h> +#include <linux/resource.h> #include <asm/ptrace.h> #include <asm/uaccess.h> +#include <asm/unistd.h> #undef DEBUG_SIG @@ -171,11 +173,12 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info, return ret; } -asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs) +void do_irix_signal(struct pt_regs *regs) { struct k_sigaction ka; siginfo_t info; int signr; + sigset_t *oldset; /* * We want the common case to go fast, which is why we may in certain @@ -183,19 +186,28 @@ asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs) * if so. */ if (!user_mode(regs)) - return 1; + return; - if (try_to_freeze()) - goto no_signal; - - if (!oldset) + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) - return handle_signal(signr, &info, &ka, oldset, regs); + if (signr > 0) { + /* Whee! Actually deliver the signal. */ + if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + /* a signal was successfully delivered; the saved + * sigmask will have been stored in the signal frame, + * and will be restored by sigreturn, so we can simply + * clear the TIF_RESTORE_SIGMASK flag */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + clear_thread_flag(TIF_RESTORE_SIGMASK); + } + + return; + } -no_signal: /* * Who's code doesn't conform to the restartable syscall convention * dies here!!! The li instruction, a single machine instruction, @@ -207,8 +219,22 @@ no_signal: regs->regs[2] == ERESTARTNOINTR) { regs->cp0_epc -= 8; } + if (regs->regs[2] == ERESTART_RESTARTBLOCK) { + regs->regs[2] = __NR_restart_syscall; + regs->regs[7] = regs->regs[26]; + regs->cp0_epc -= 4; + } + regs->regs[0] = 0; /* Don't deal with this again. */ + } + + /* + * If there's no signal to deliver, we just put the saved sigmask + * back + */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) { + clear_thread_flag(TIF_RESTORE_SIGMASK); + sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); } - return 0; } asmlinkage void @@ -297,6 +323,9 @@ struct sigact_irix5 { int _unused0[2]; }; +#define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility: + set only the low 32 bit of the sigset. */ + #ifdef DEBUG_SIG static inline void dump_sigact_irix5(struct sigact_irix5 *p) { @@ -412,7 +441,7 @@ asmlinkage int irix_sigprocmask(int how, irix_sigset_t __user *new, asmlinkage int irix_sigsuspend(struct pt_regs *regs) { - sigset_t saveset, newset; + sigset_t newset; sigset_t __user *uset; uset = (sigset_t __user *) regs->regs[4]; @@ -421,18 +450,15 @@ asmlinkage int irix_sigsuspend(struct pt_regs *regs) sigdelsetmask(&newset, ~_BLOCKABLE); spin_lock_irq(¤t->sighand->siglock); - saveset = current->blocked; + current->saved_sigmask = current->blocked; current->blocked = newset; recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); - regs->regs[2] = -EINTR; - while (1) { - current->state = TASK_INTERRUPTIBLE; - schedule(); - if (do_irix_signal(&saveset, regs)) - return -EINTR; - } + current->state = TASK_INTERRUPTIBLE; + schedule(); + set_thread_flag(TIF_RESTORE_SIGMASK); + return -ERESTARTNOHAND; } /* hate hate hate... */ @@ -540,8 +566,6 @@ out: #define IRIX_P_PGID 2 #define IRIX_P_ALL 7 -extern int getrusage(struct task_struct *, int, struct rusage __user *); - #define W_EXITED 1 #define W_TRAPPED 2 #define W_STOPPED 4 diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c index 97ebdc754b9e..63dfeb41796b 100644 --- a/arch/mips/kernel/irq-msc01.c +++ b/arch/mips/kernel/irq-msc01.c @@ -137,7 +137,7 @@ msc_bind_eic_interrupt (unsigned int irq, unsigned int set) #define shutdown_msc_irq disable_msc_irq -struct hw_interrupt_type msc_levelirq_type = { +struct irq_chip msc_levelirq_type = { .typename = "SOC-it-Level", .startup = startup_msc_irq, .shutdown = shutdown_msc_irq, @@ -147,7 +147,7 @@ struct hw_interrupt_type msc_levelirq_type = { .end = end_msc_irq, }; -struct hw_interrupt_type msc_edgeirq_type = { +struct irq_chip msc_edgeirq_type = { .typename = "SOC-it-Edge", .startup =startup_msc_irq, .shutdown = shutdown_msc_irq, @@ -174,14 +174,14 @@ void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq) switch (imp->im_type) { case MSC01_IRQ_EDGE: - irq_desc[base+n].handler = &msc_edgeirq_type; + irq_desc[base+n].chip = &msc_edgeirq_type; if (cpu_has_veic) MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT); else MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT | imp->im_lvl); break; case MSC01_IRQ_LEVEL: - irq_desc[base+n].handler = &msc_levelirq_type; + irq_desc[base+n].chip = &msc_levelirq_type; if (cpu_has_veic) MSCIC_WRITE(MSC01_IC_SUP+n*8, 0); else diff --git a/arch/mips/kernel/irq-mv6434x.c b/arch/mips/kernel/irq-mv6434x.c index 0613f1f36b1b..b117e64da64d 100644 --- a/arch/mips/kernel/irq-mv6434x.c +++ b/arch/mips/kernel/irq-mv6434x.c @@ -136,7 +136,7 @@ void ll_mv64340_irq(struct pt_regs *regs) #define shutdown_mv64340_irq disable_mv64340_irq -struct hw_interrupt_type mv64340_irq_type = { +struct irq_chip mv64340_irq_type = { .typename = "MV-64340", .startup = startup_mv64340_irq, .shutdown = shutdown_mv64340_irq, @@ -155,7 +155,7 @@ void __init mv64340_irq_init(unsigned int base) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = 0; irq_desc[i].depth = 2; - irq_desc[i].handler = &mv64340_irq_type; + irq_desc[i].chip = &mv64340_irq_type; } irq_base = base; diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c index 0b130c5ac5d9..6b54c7109e2e 100644 --- a/arch/mips/kernel/irq-rm7000.c +++ b/arch/mips/kernel/irq-rm7000.c @@ -71,7 +71,7 @@ static void rm7k_cpu_irq_end(unsigned int irq) unmask_rm7k_irq(irq); } -static hw_irq_controller rm7k_irq_controller = { +static struct irq_chip rm7k_irq_controller = { .typename = "RM7000", .startup = rm7k_cpu_irq_startup, .shutdown = rm7k_cpu_irq_shutdown, @@ -91,7 +91,7 @@ void __init rm7k_cpu_irq_init(int base) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &rm7k_irq_controller; + irq_desc[i].chip = &rm7k_irq_controller; } irq_base = base; diff --git a/arch/mips/kernel/irq-rm9000.c b/arch/mips/kernel/irq-rm9000.c index 9b5f20c32acb..62f011ba97a2 100644 --- a/arch/mips/kernel/irq-rm9000.c +++ b/arch/mips/kernel/irq-rm9000.c @@ -105,7 +105,7 @@ static void rm9k_cpu_irq_end(unsigned int irq) unmask_rm9k_irq(irq); } -static hw_irq_controller rm9k_irq_controller = { +static struct irq_chip rm9k_irq_controller = { .typename = "RM9000", .startup = rm9k_cpu_irq_startup, .shutdown = rm9k_cpu_irq_shutdown, @@ -115,7 +115,7 @@ static hw_irq_controller rm9k_irq_controller = { .end = rm9k_cpu_irq_end, }; -static hw_irq_controller rm9k_perfcounter_irq = { +static struct irq_chip rm9k_perfcounter_irq = { .typename = "RM9000", .startup = rm9k_perfcounter_irq_startup, .shutdown = rm9k_perfcounter_irq_shutdown, @@ -139,11 +139,11 @@ void __init rm9k_cpu_irq_init(int base) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &rm9k_irq_controller; + irq_desc[i].chip = &rm9k_irq_controller; } rm9000_perfcount_irq = base + 1; - irq_desc[rm9000_perfcount_irq].handler = &rm9k_perfcounter_irq; + irq_desc[rm9000_perfcount_irq].chip = &rm9k_perfcounter_irq; irq_base = base; } diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index 3dce742e716f..d955aaefbb8e 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -8,7 +8,6 @@ * Copyright (C) 1992 Linus Torvalds * Copyright (C) 1994 - 2000 Ralf Baechle */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/init.h> @@ -95,7 +94,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); #endif - seq_printf(p, " %14s", irq_desc[i].handler->typename); + seq_printf(p, " %14s", irq_desc[i].chip->typename); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) @@ -137,7 +136,7 @@ void __init init_IRQ(void) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &no_irq_type; + irq_desc[i].chip = &no_irq_chip; spin_lock_init(&irq_desc[i].lock); #ifdef CONFIG_MIPS_MT_SMTC irq_hwmask[i] = 0; diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c index 5db67e31ec1a..9bb21c7f2149 100644 --- a/arch/mips/kernel/irq_cpu.c +++ b/arch/mips/kernel/irq_cpu.c @@ -94,7 +94,7 @@ static void mips_cpu_irq_end(unsigned int irq) unmask_mips_irq(irq); } -static hw_irq_controller mips_cpu_irq_controller = { +static struct irq_chip mips_cpu_irq_controller = { .typename = "MIPS", .startup = mips_cpu_irq_startup, .shutdown = mips_cpu_irq_shutdown, @@ -140,7 +140,7 @@ static void mips_mt_cpu_irq_ack(unsigned int irq) #define mips_mt_cpu_irq_end mips_cpu_irq_end -static hw_irq_controller mips_mt_cpu_irq_controller = { +static struct irq_chip mips_mt_cpu_irq_controller = { .typename = "MIPS", .startup = mips_mt_cpu_irq_startup, .shutdown = mips_mt_cpu_irq_shutdown, @@ -167,14 +167,14 @@ void __init mips_cpu_irq_init(int irq_base) irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &mips_mt_cpu_irq_controller; + irq_desc[i].chip = &mips_mt_cpu_irq_controller; } for (i = irq_base + 2; i < irq_base + 8; i++) { irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; - irq_desc[i].handler = &mips_cpu_irq_controller; + irq_desc[i].chip = &mips_cpu_irq_controller; } mips_cpu_irq_base = irq_base; diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index a7d2bb3cf835..43b1162d714f 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -5,7 +5,6 @@ * Written by Ulf Carlsson (ulfc@engr.sgi.com) * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) */ -#include <linux/config.h> #include <linux/compiler.h> #include <linux/mm.h> #include <linux/errno.h> @@ -992,7 +991,7 @@ struct sysctl_args32 unsigned int __unused[4]; }; -#ifdef CONFIG_SYSCTL +#ifdef CONFIG_SYSCTL_SYSCALL asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) { @@ -1033,7 +1032,7 @@ asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) return error; } -#endif /* CONFIG_SYSCTL */ +#endif /* CONFIG_SYSCTL_SYSCALL */ asmlinkage long sys32_newuname(struct new_utsname __user * name) { @@ -1297,9 +1296,3 @@ _sys32_clone(nabi_no_regargs struct pt_regs regs) return do_fork(clone_flags, newsp, ®s, 0, parent_tidptr, child_tidptr); } - -extern asmlinkage void sys_set_thread_area(u32 addr); -asmlinkage void sys32_set_thread_area(u32 addr) -{ - sys_set_thread_area(AA(addr)); -} diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c index 02237a685ec7..c1373a6e668b 100644 --- a/arch/mips/kernel/mips-mt.c +++ b/arch/mips/kernel/mips-mt.c @@ -7,6 +7,7 @@ #include <linux/sched.h> #include <linux/cpumask.h> #include <linux/interrupt.h> +#include <linux/security.h> #include <asm/cpu.h> #include <asm/processor.h> @@ -47,7 +48,7 @@ unsigned long mt_fpemul_threshold = 0; * used in sys_sched_set/getaffinity() in kernel/sched.c, so * cloned here. */ -static inline task_t *find_process_by_pid(pid_t pid) +static inline struct task_struct *find_process_by_pid(pid_t pid) { return pid ? find_task_by_pid(pid) : current; } @@ -62,7 +63,7 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len, cpumask_t new_mask; cpumask_t effective_mask; int retval; - task_t *p; + struct task_struct *p; if (len < sizeof(new_mask)) return -EINVAL; @@ -127,7 +128,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len, unsigned int real_len; cpumask_t mask; int retval; - task_t *p; + struct task_struct *p; real_len = sizeof(mask); if (len < real_len) diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c index 0a71a4c33716..f44a01357ada 100644 --- a/arch/mips/kernel/mips_ksyms.c +++ b/arch/mips/kernel/mips_ksyms.c @@ -8,7 +8,6 @@ * Copyright (C) 1996, 97, 98, 99, 2000, 01, 03, 04, 05 by Ralf Baechle * Copyright (C) 1999, 2000, 01 Silicon Graphics, Inc. */ -#include <linux/config.h> #include <linux/interrupt.h> #include <linux/module.h> #include <asm/checksum.h> diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index 9def554f335b..d8beef107902 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -5,7 +5,6 @@ * Copyright (C) 2001, 2004 MIPS Technologies, Inc. * Copyright (C) 2004 Maciej W. Rozycki */ -#include <linux/config.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/sched.h> diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 199a06e873c6..2613a0dd4b82 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -8,7 +8,6 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2004 Thiemo Seufer */ -#include <linux/config.h> #include <linux/errno.h> #include <linux/module.h> #include <linux/sched.h> @@ -274,104 +273,107 @@ long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); } -static struct mips_frame_info { - void *func; - unsigned long func_size; - int frame_size; - int pc_offset; -} *schedule_frame, mfinfo[64]; -static int mfinfo_num; +/* + * + */ +struct mips_frame_info { + void *func; + unsigned long func_size; + int frame_size; + int pc_offset; +}; -static int __init get_frame_info(struct mips_frame_info *info) +static inline int is_ra_save_ins(union mips_instruction *ip) { - int i; - void *func = info->func; - union mips_instruction *ip = (union mips_instruction *)func; + /* sw / sd $ra, offset($sp) */ + return (ip->i_format.opcode == sw_op || ip->i_format.opcode == sd_op) && + ip->i_format.rs == 29 && + ip->i_format.rt == 31; +} + +static inline int is_jal_jalr_jr_ins(union mips_instruction *ip) +{ + if (ip->j_format.opcode == jal_op) + return 1; + if (ip->r_format.opcode != spec_op) + return 0; + return ip->r_format.func == jalr_op || ip->r_format.func == jr_op; +} + +static inline int is_sp_move_ins(union mips_instruction *ip) +{ + /* addiu/daddiu sp,sp,-imm */ + if (ip->i_format.rs != 29 || ip->i_format.rt != 29) + return 0; + if (ip->i_format.opcode == addiu_op || ip->i_format.opcode == daddiu_op) + return 1; + return 0; +} + +static int get_frame_info(struct mips_frame_info *info) +{ + union mips_instruction *ip = info->func; + unsigned max_insns = info->func_size / sizeof(union mips_instruction); + unsigned i; + info->pc_offset = -1; info->frame_size = 0; - for (i = 0; i < 128; i++, ip++) { - /* if jal, jalr, jr, stop. */ - if (ip->j_format.opcode == jal_op || - (ip->r_format.opcode == spec_op && - (ip->r_format.func == jalr_op || - ip->r_format.func == jr_op))) - break; - if (info->func_size && i >= info->func_size / 4) + if (!ip) + goto err; + + if (max_insns == 0) + max_insns = 128U; /* unknown function size */ + max_insns = min(128U, max_insns); + + for (i = 0; i < max_insns; i++, ip++) { + + if (is_jal_jalr_jr_ins(ip)) break; - if ( -#ifdef CONFIG_32BIT - ip->i_format.opcode == addiu_op && -#endif -#ifdef CONFIG_64BIT - ip->i_format.opcode == daddiu_op && -#endif - ip->i_format.rs == 29 && - ip->i_format.rt == 29) { - /* addiu/daddiu sp,sp,-imm */ - if (info->frame_size) - continue; - info->frame_size = - ip->i_format.simmediate; + if (!info->frame_size) { + if (is_sp_move_ins(ip)) + info->frame_size = - ip->i_format.simmediate; + continue; } - - if ( -#ifdef CONFIG_32BIT - ip->i_format.opcode == sw_op && -#endif -#ifdef CONFIG_64BIT - ip->i_format.opcode == sd_op && -#endif - ip->i_format.rs == 29 && - ip->i_format.rt == 31) { - /* sw / sd $ra, offset($sp) */ - if (info->pc_offset != -1) - continue; + if (info->pc_offset == -1 && is_ra_save_ins(ip)) { info->pc_offset = ip->i_format.simmediate / sizeof(long); + break; } } - if (info->pc_offset == -1 || info->frame_size == 0) { - if (func == schedule) - printk("Can't analyze prologue code at %p\n", func); - info->pc_offset = -1; - info->frame_size = 0; - } - - return 0; + if (info->frame_size && info->pc_offset >= 0) /* nested */ + return 0; + if (info->pc_offset < 0) /* leaf */ + return 1; + /* prologue seems boggus... */ +err: + return -1; } +static struct mips_frame_info schedule_mfi __read_mostly; + static int __init frame_info_init(void) { - int i; + unsigned long size = 0; #ifdef CONFIG_KALLSYMS + unsigned long ofs; char *modname; char namebuf[KSYM_NAME_LEN + 1]; - unsigned long start, size, ofs; - extern char __sched_text_start[], __sched_text_end[]; - extern char __lock_text_start[], __lock_text_end[]; - - start = (unsigned long)__sched_text_start; - for (i = 0; i < ARRAY_SIZE(mfinfo); i++) { - if (start == (unsigned long)schedule) - schedule_frame = &mfinfo[i]; - if (!kallsyms_lookup(start, &size, &ofs, &modname, namebuf)) - break; - mfinfo[i].func = (void *)(start + ofs); - mfinfo[i].func_size = size; - start += size - ofs; - if (start >= (unsigned long)__lock_text_end) - break; - if (start == (unsigned long)__sched_text_end) - start = (unsigned long)__lock_text_start; - } -#else - mfinfo[0].func = schedule; - schedule_frame = &mfinfo[0]; + + kallsyms_lookup((unsigned long)schedule, &size, &ofs, &modname, namebuf); #endif - for (i = 0; i < ARRAY_SIZE(mfinfo) && mfinfo[i].func; i++) - get_frame_info(&mfinfo[i]); + schedule_mfi.func = schedule; + schedule_mfi.func_size = size; + + get_frame_info(&schedule_mfi); + + /* + * Without schedule() frame info, result given by + * thread_saved_pc() and get_wchan() are not reliable. + */ + if (schedule_mfi.pc_offset < 0) + printk("Can't analyze schedule() prologue at %p\n", schedule); - mfinfo_num = i; return 0; } @@ -387,54 +389,86 @@ unsigned long thread_saved_pc(struct task_struct *tsk) /* New born processes are a special case */ if (t->reg31 == (unsigned long) ret_from_fork) return t->reg31; - - if (!schedule_frame || schedule_frame->pc_offset < 0) + if (schedule_mfi.pc_offset < 0) return 0; - return ((unsigned long *)t->reg29)[schedule_frame->pc_offset]; + return ((unsigned long *)t->reg29)[schedule_mfi.pc_offset]; } -/* get_wchan - a maintenance nightmare^W^Wpain in the ass ... */ -unsigned long get_wchan(struct task_struct *p) + +#ifdef CONFIG_KALLSYMS +/* used by show_backtrace() */ +unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long ra) { unsigned long stack_page; - unsigned long pc; -#ifdef CONFIG_KALLSYMS - unsigned long frame; -#endif + struct mips_frame_info info; + char *modname; + char namebuf[KSYM_NAME_LEN + 1]; + unsigned long size, ofs; + int leaf; - if (!p || p == current || p->state == TASK_RUNNING) + stack_page = (unsigned long)task_stack_page(task); + if (!stack_page) return 0; - stack_page = (unsigned long)task_stack_page(p); - if (!stack_page || !mfinfo_num) + if (!kallsyms_lookup(pc, &size, &ofs, &modname, namebuf)) + return 0; + /* + * Return ra if an exception occured at the first instruction + */ + if (unlikely(ofs == 0)) + return ra; + + info.func = (void *)(pc - ofs); + info.func_size = ofs; /* analyze from start to ofs */ + leaf = get_frame_info(&info); + if (leaf < 0) + return 0; + + if (*sp < stack_page || + *sp + info.frame_size > stack_page + THREAD_SIZE - 32) return 0; - pc = thread_saved_pc(p); + if (leaf) + /* + * For some extreme cases, get_frame_info() can + * consider wrongly a nested function as a leaf + * one. In that cases avoid to return always the + * same value. + */ + pc = pc != ra ? ra : 0; + else + pc = ((unsigned long *)(*sp))[info.pc_offset]; + + *sp += info.frame_size; + return __kernel_text_address(pc) ? pc : 0; +} +#endif + +/* + * get_wchan - a maintenance nightmare^W^Wpain in the ass ... + */ +unsigned long get_wchan(struct task_struct *task) +{ + unsigned long pc = 0; #ifdef CONFIG_KALLSYMS - if (!in_sched_functions(pc)) - return pc; + unsigned long sp; +#endif - frame = p->thread.reg29 + schedule_frame->frame_size; - do { - int i; + if (!task || task == current || task->state == TASK_RUNNING) + goto out; + if (!task_stack_page(task)) + goto out; - if (frame < stack_page || frame > stack_page + THREAD_SIZE - 32) - return 0; + pc = thread_saved_pc(task); - for (i = mfinfo_num - 1; i >= 0; i--) { - if (pc >= (unsigned long) mfinfo[i].func) - break; - } - if (i < 0) - break; +#ifdef CONFIG_KALLSYMS + sp = task->thread.reg29 + schedule_mfi.frame_size; - pc = ((unsigned long *)frame)[mfinfo[i].pc_offset]; - if (!mfinfo[i].frame_size) - break; - frame += mfinfo[i].frame_size; - } while (in_sched_functions(pc)); + while (in_sched_functions(pc)) + pc = unwind_stack(task, &sp, pc, 0); #endif +out: return pc; } - diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 1d44025188d8..362d1728e531 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -14,7 +14,6 @@ * At this time Linux/MIPS64 only supports syscall tracing, even for 32-bit * binaries. */ -#include <linux/config.h> #include <linux/compiler.h> #include <linux/kernel.h> #include <linux/sched.h> diff --git a/arch/mips/kernel/r2300_switch.S b/arch/mips/kernel/r2300_switch.S index 0d9c4a32a9c2..656bde2e11b1 100644 --- a/arch/mips/kernel/r2300_switch.S +++ b/arch/mips/kernel/r2300_switch.S @@ -10,7 +10,6 @@ * Further modifications to make this work: * Copyright (c) 1998-2000 Harald Koerfgen */ -#include <linux/config.h> #include <asm/asm.h> #include <asm/cachectl.h> #include <asm/fpregdef.h> diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 283a98508fc8..880fa6e841ee 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -12,7 +12,6 @@ * Copyright (C) 2000 MIPS Technologies, Inc. * Copyright (C) 1999, 2001 Silicon Graphics, Inc. */ -#include <linux/config.h> #include <asm/asm.h> #include <asm/errno.h> #include <asm/fpregdef.h> diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S index db94e556fc97..d5c8b82fed72 100644 --- a/arch/mips/kernel/r4k_switch.S +++ b/arch/mips/kernel/r4k_switch.S @@ -10,7 +10,6 @@ * Copyright (C) 2000 MIPS Technologies, Inc. * written by Carsten Langgaard, carstenl@mips.com */ -#include <linux/config.h> #include <asm/asm.h> #include <asm/cachectl.h> #include <asm/fpregdef.h> @@ -94,7 +93,7 @@ ori t1, t2, TCSTATUS_IXMT mtc0 t1, CP0_TCSTATUS andi t2, t2, TCSTATUS_IXMT - ehb + _ehb DMT 8 # dmt t0 move t1,ra jal mips_ihb @@ -109,7 +108,7 @@ or a2, t1 mtc0 a2, CP0_STATUS #ifdef CONFIG_MIPS_MT_SMTC - ehb + _ehb andi t0, t0, VPECONTROL_TE beqz t0, 1f emt @@ -118,7 +117,7 @@ xori t1, t1, TCSTATUS_IXMT or t1, t1, t2 mtc0 t1, CP0_TCSTATUS - ehb + _ehb #endif /* CONFIG_MIPS_MT_SMTC */ move v0, a0 jr ra diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index caf777f83289..cdab1b2cd134 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -487,7 +487,7 @@ static struct file_operations rtlx_fops = { static struct irqaction rtlx_irq = { .handler = rtlx_interrupt, - .flags = SA_INTERRUPT, + .flags = IRQF_DISABLED, .name = "RTLX", }; diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 2d2fdf77e308..e71785102206 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -3,14 +3,14 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle + * Copyright (C) 1995-99, 2000- 02, 06 Ralf Baechle <ralf@linux-mips.org> * Copyright (C) 2001 MIPS Technologies, Inc. * Copyright (C) 2004 Thiemo Seufer */ -#include <linux/config.h> #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -28,6 +28,18 @@ NESTED(handle_sys, PT_SIZE, sp) .set noat SAVE_SOME +#ifdef CONFIG_TRACE_IRQFLAGS + TRACE_IRQS_ON +#ifdef CONFIG_64BIT + LONG_L $8, PT_R8(sp) + LONG_L $9, PT_R9(sp) +#endif + LONG_L $7, PT_R7(sp) + LONG_L $6, PT_R6(sp) + LONG_L $5, PT_R5(sp) + LONG_L $4, PT_R4(sp) + LONG_L $2, PT_R2(sp) +#endif STI .set at @@ -647,6 +659,11 @@ einval: li v0, -EINVAL sys sys_unshare 1 sys sys_splice 4 sys sys_sync_file_range 7 /* 4305 */ + sys sys_tee 4 + sys sys_vmsplice 4 + sys sys_move_pages 6 + sys sys_set_robust_list 2 + sys sys_get_robust_list 3 .endm /* We pre-compute the number of _instruction_ bytes needed to diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 9ba750887377..4c22d0b4825d 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -7,10 +7,10 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2001 MIPS Technologies, Inc. */ -#include <linux/config.h> #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -34,6 +34,7 @@ NESTED(handle_sys64, PT_SIZE, sp) */ .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at #endif @@ -462,3 +463,8 @@ sys_call_table: PTR sys_unshare PTR sys_splice PTR sys_sync_file_range + PTR sys_tee /* 5265 */ + PTR sys_vmsplice + PTR sys_move_pages + PTR sys_set_robust_list + PTR sys_get_robust_list diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 942aca26f9c4..f25c2a2f1038 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -7,10 +7,10 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2001 MIPS Technologies, Inc. */ -#include <linux/config.h> #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -33,6 +33,7 @@ NESTED(handle_sysn32, PT_SIZE, sp) #ifndef CONFIG_MIPS32_O32 .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at #endif @@ -246,7 +247,7 @@ EXPORT(sysn32_call_table) PTR sys_capset PTR sys32_rt_sigpending /* 6125 */ PTR compat_sys_rt_sigtimedwait - PTR sys_rt_sigqueueinfo + PTR sys32_rt_sigqueueinfo PTR sysn32_rt_sigsuspend PTR sys32_sigaltstack PTR compat_sys_utime /* 6130 */ @@ -388,3 +389,8 @@ EXPORT(sysn32_call_table) PTR sys_unshare PTR sys_splice PTR sys_sync_file_range + PTR sys_tee + PTR sys_vmsplice /* 6270 */ + PTR sys_move_pages + PTR compat_sys_set_robust_list + PTR compat_sys_get_robust_list diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 8efb23a84131..288ee4ac4dbb 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -13,10 +13,10 @@ * to ABI64 calling convention. 64-bit syscalls are also processed * here for now. */ -#include <linux/config.h> #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -28,6 +28,7 @@ NESTED(handle_sys, PT_SIZE, sp) .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at ld t1, PT_EPC(sp) # skip syscall on return @@ -497,7 +498,7 @@ sys_call_table: PTR sys_mknodat /* 4290 */ PTR sys_fchownat PTR compat_sys_futimesat - PTR compat_sys_newfstatat + PTR sys_newfstatat PTR sys_unlinkat PTR sys_renameat /* 4295 */ PTR sys_linkat @@ -510,4 +511,9 @@ sys_call_table: PTR sys_unshare PTR sys_splice PTR sys32_sync_file_range /* 4305 */ + PTR sys_tee + PTR sys_vmsplice + PTR compat_sys_move_pages + PTR compat_sys_set_robust_list + PTR compat_sys_get_robust_list /* 4310 */ .size sys_call_table,.-sys_call_table diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index bfcec8d9bfe4..fdbb508661c5 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -10,30 +10,15 @@ * Copyright (C) 1999 Silicon Graphics, Inc. * Copyright (C) 2000 2001, 2002 Maciej W. Rozycki */ -#include <linux/config.h> -#include <linux/errno.h> #include <linux/init.h> #include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> #include <linux/module.h> -#include <linux/stddef.h> -#include <linux/string.h> -#include <linux/unistd.h> -#include <linux/slab.h> -#include <linux/user.h> -#include <linux/utsname.h> -#include <linux/a.out.h> -#include <linux/tty.h> +#include <linux/screen_info.h> #include <linux/bootmem.h> #include <linux/initrd.h> -#include <linux/major.h> -#include <linux/kdev_t.h> #include <linux/root_dev.h> #include <linux/highmem.h> #include <linux/console.h> -#include <linux/mmzone.h> #include <linux/pfn.h> #include <asm/addrspace.h> @@ -97,6 +82,12 @@ void __init add_memory_region(phys_t start, phys_t size, long type) int x = boot_mem_map.nr_map; struct boot_mem_map_entry *prev = boot_mem_map.map + x - 1; + /* Sanity check */ + if (start + size < start) { + printk("Trying to add an invalid memory region, skipped\n"); + return; + } + /* * Try to merge with previous entry if any. This is far less than * perfect but is sufficient for most real world cases. @@ -144,167 +135,132 @@ static void __init print_memory_map(void) } } -static inline void parse_cmdline_early(void) +/* + * Manage initrd + */ +#ifdef CONFIG_BLK_DEV_INITRD + +static int __init rd_start_early(char *p) { - char c = ' ', *to = command_line, *from = saved_command_line; - unsigned long start_at, mem_size; - int len = 0; - int usermem = 0; + unsigned long start = memparse(p, &p); - printk("Determined physical RAM map:\n"); - print_memory_map(); +#ifdef CONFIG_64BIT + /* HACK: Guess if the sign extension was forgotten */ + if (start > 0x0000000080000000 && start < 0x00000000ffffffff) + start |= 0xffffffff00000000UL; +#endif + initrd_start = start; + initrd_end += start; - for (;;) { - /* - * "mem=XXX[kKmM]" defines a memory region from - * 0 to <XXX>, overriding the determined size. - * "mem=XXX[KkmM]@YYY[KkmM]" defines a memory region from - * <YYY> to <YYY>+<XXX>, overriding the determined size. - */ - if (c == ' ' && !memcmp(from, "mem=", 4)) { - if (to != command_line) - to--; - /* - * If a user specifies memory size, we - * blow away any automatically generated - * size. - */ - if (usermem == 0) { - boot_mem_map.nr_map = 0; - usermem = 1; - } - mem_size = memparse(from + 4, &from); - if (*from == '@') - start_at = memparse(from + 1, &from); - else - start_at = 0; - add_memory_region(start_at, mem_size, BOOT_MEM_RAM); - } - c = *(from++); - if (!c) - break; - if (CL_SIZE <= ++len) - break; - *(to++) = c; - } - *to = '\0'; + return 0; +} +early_param("rd_start", rd_start_early); - if (usermem) { - printk("User-defined physical RAM map:\n"); - print_memory_map(); - } +static int __init rd_size_early(char *p) +{ + initrd_end += memparse(p, &p); + + return 0; } +early_param("rd_size", rd_size_early); -static inline int parse_rd_cmdline(unsigned long* rd_start, unsigned long* rd_end) +static unsigned long __init init_initrd(void) { + unsigned long tmp, end, size; + u32 *initrd_header; + + ROOT_DEV = Root_RAM0; + /* - * "rd_start=0xNNNNNNNN" defines the memory address of an initrd - * "rd_size=0xNN" it's size + * Board specific code or command line parser should have + * already set up initrd_start and initrd_end. In these cases + * perfom sanity checks and use them if all looks good. */ - unsigned long start = 0; - unsigned long size = 0; - unsigned long end; - char cmd_line[CL_SIZE]; - char *start_str; - char *size_str; - char *tmp; - - strcpy(cmd_line, command_line); - *command_line = 0; - tmp = cmd_line; - /* Ignore "rd_start=" strings in other parameters. */ - start_str = strstr(cmd_line, "rd_start="); - if (start_str && start_str != cmd_line && *(start_str - 1) != ' ') - start_str = strstr(start_str, " rd_start="); - while (start_str) { - if (start_str != cmd_line) - strncat(command_line, tmp, start_str - tmp); - start = memparse(start_str + 9, &start_str); - tmp = start_str + 1; - start_str = strstr(start_str, " rd_start="); + size = initrd_end - initrd_start; + if (initrd_end == 0 || size == 0) { + initrd_start = 0; + initrd_end = 0; + } else + return initrd_end; + + end = (unsigned long)&_end; + tmp = PAGE_ALIGN(end) - sizeof(u32) * 2; + if (tmp < end) + tmp += PAGE_SIZE; + + initrd_header = (u32 *)tmp; + if (initrd_header[0] == 0x494E5244) { + initrd_start = (unsigned long)&initrd_header[2]; + initrd_end = initrd_start + initrd_header[1]; } - if (*tmp) - strcat(command_line, tmp); - - strcpy(cmd_line, command_line); - *command_line = 0; - tmp = cmd_line; - /* Ignore "rd_size" strings in other parameters. */ - size_str = strstr(cmd_line, "rd_size="); - if (size_str && size_str != cmd_line && *(size_str - 1) != ' ') - size_str = strstr(size_str, " rd_size="); - while (size_str) { - if (size_str != cmd_line) - strncat(command_line, tmp, size_str - tmp); - size = memparse(size_str + 8, &size_str); - tmp = size_str + 1; - size_str = strstr(size_str, " rd_size="); + return initrd_end; +} + +static void __init finalize_initrd(void) +{ + unsigned long size = initrd_end - initrd_start; + + if (size == 0) { + printk(KERN_INFO "Initrd not found or empty"); + goto disable; + } + if (CPHYSADDR(initrd_end) > PFN_PHYS(max_low_pfn)) { + printk("Initrd extends beyond end of memory"); + goto disable; } - if (*tmp) - strcat(command_line, tmp); -#ifdef CONFIG_64BIT - /* HACK: Guess if the sign extension was forgotten */ - if (start > 0x0000000080000000 && start < 0x00000000ffffffff) - start |= 0xffffffff00000000UL; + reserve_bootmem(CPHYSADDR(initrd_start), size); + initrd_below_start_ok = 1; + + printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", + initrd_start, size); + return; +disable: + printk(" - disabling initrd\n"); + initrd_start = 0; + initrd_end = 0; +} + +#else /* !CONFIG_BLK_DEV_INITRD */ + +#define init_initrd() 0 +#define finalize_initrd() do {} while (0) + #endif - end = start + size; - if (start && end) { - *rd_start = start; - *rd_end = end; - return 1; - } - return 0; +/* + * Initialize the bootmem allocator. It also setup initrd related data + * if needed. + */ +#ifdef CONFIG_SGI_IP27 + +static void __init bootmem_init(void) +{ + init_initrd(); + finalize_initrd(); } -#define MAXMEM HIGHMEM_START -#define MAXMEM_PFN PFN_DOWN(MAXMEM) +#else /* !CONFIG_SGI_IP27 */ -static inline void bootmem_init(void) +static void __init bootmem_init(void) { - unsigned long start_pfn; - unsigned long reserved_end = (unsigned long)&_end; -#ifndef CONFIG_SGI_IP27 - unsigned long first_usable_pfn; + unsigned long reserved_end; + unsigned long highest = 0; + unsigned long mapstart = -1UL; unsigned long bootmap_size; int i; -#endif -#ifdef CONFIG_BLK_DEV_INITRD - int initrd_reserve_bootmem = 0; - - /* Board specific code should have set up initrd_start and initrd_end */ - ROOT_DEV = Root_RAM0; - if (parse_rd_cmdline(&initrd_start, &initrd_end)) { - reserved_end = max(reserved_end, initrd_end); - initrd_reserve_bootmem = 1; - } else { - unsigned long tmp; - u32 *initrd_header; - - tmp = ((reserved_end + PAGE_SIZE-1) & PAGE_MASK) - sizeof(u32) * 2; - if (tmp < reserved_end) - tmp += PAGE_SIZE; - initrd_header = (u32 *)tmp; - if (initrd_header[0] == 0x494E5244) { - initrd_start = (unsigned long)&initrd_header[2]; - initrd_end = initrd_start + initrd_header[1]; - reserved_end = max(reserved_end, initrd_end); - initrd_reserve_bootmem = 1; - } - } -#endif /* CONFIG_BLK_DEV_INITRD */ /* - * Partially used pages are not usable - thus - * we are rounding upwards. + * Init any data related to initrd. It's a nop if INITRD is + * not selected. Once that done we can determine the low bound + * of usable memory. */ - start_pfn = PFN_UP(CPHYSADDR(reserved_end)); + reserved_end = init_initrd(); + reserved_end = PFN_UP(CPHYSADDR(max(reserved_end, (unsigned long)&_end))); -#ifndef CONFIG_SGI_IP27 - /* Find the highest page frame number we have available. */ - max_pfn = 0; - first_usable_pfn = -1UL; + /* + * Find the highest page frame number we have available. + */ for (i = 0; i < boot_mem_map.nr_map; i++) { unsigned long start, end; @@ -313,56 +269,38 @@ static inline void bootmem_init(void) start = PFN_UP(boot_mem_map.map[i].addr); end = PFN_DOWN(boot_mem_map.map[i].addr - + boot_mem_map.map[i].size); + + boot_mem_map.map[i].size); - if (start >= end) + if (end > highest) + highest = end; + if (end <= reserved_end) continue; - if (end > max_pfn) - max_pfn = end; - if (start < first_usable_pfn) { - if (start > start_pfn) { - first_usable_pfn = start; - } else if (end > start_pfn) { - first_usable_pfn = start_pfn; - } - } + if (start >= mapstart) + continue; + mapstart = max(reserved_end, start); } /* * Determine low and high memory ranges */ - max_low_pfn = max_pfn; - if (max_low_pfn > MAXMEM_PFN) { - max_low_pfn = MAXMEM_PFN; -#ifndef CONFIG_HIGHMEM - /* Maximum memory usable is what is directly addressable */ - printk(KERN_WARNING "Warning only %ldMB will be used.\n", - MAXMEM >> 20); - printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n"); + if (highest > PFN_DOWN(HIGHMEM_START)) { +#ifdef CONFIG_HIGHMEM + highstart_pfn = PFN_DOWN(HIGHMEM_START); + highend_pfn = highest; #endif + highest = PFN_DOWN(HIGHMEM_START); } -#ifdef CONFIG_HIGHMEM /* - * Crude, we really should make a better attempt at detecting - * highstart_pfn + * Initialize the boot-time allocator with low memory only. */ - highstart_pfn = highend_pfn = max_pfn; - if (max_pfn > MAXMEM_PFN) { - highstart_pfn = MAXMEM_PFN; - printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", - (highend_pfn - highstart_pfn) >> (20 - PAGE_SHIFT)); - } -#endif - - /* Initialize the boot-time allocator with low memory only. */ - bootmap_size = init_bootmem(first_usable_pfn, max_low_pfn); + bootmap_size = init_bootmem(mapstart, highest); /* * Register fully available low RAM pages with the bootmem allocator. */ for (i = 0; i < boot_mem_map.nr_map; i++) { - unsigned long curr_pfn, last_pfn, size; + unsigned long start, end, size; /* * Reserve usable memory. @@ -370,85 +308,50 @@ static inline void bootmem_init(void) if (boot_mem_map.map[i].type != BOOT_MEM_RAM) continue; - /* - * We are rounding up the start address of usable memory: - */ - curr_pfn = PFN_UP(boot_mem_map.map[i].addr); - if (curr_pfn >= max_low_pfn) - continue; - if (curr_pfn < start_pfn) - curr_pfn = start_pfn; - - /* - * ... and at the end of the usable range downwards: - */ - last_pfn = PFN_DOWN(boot_mem_map.map[i].addr + start = PFN_UP(boot_mem_map.map[i].addr); + end = PFN_DOWN(boot_mem_map.map[i].addr + boot_mem_map.map[i].size); - - if (last_pfn > max_low_pfn) - last_pfn = max_low_pfn; - /* - * Only register lowmem part of lowmem segment with bootmem. + * We are rounding up the start address of usable memory + * and at the end of the usable range downwards. */ - size = last_pfn - curr_pfn; - if (curr_pfn > PFN_DOWN(HIGHMEM_START)) - continue; - if (curr_pfn + size - 1 > PFN_DOWN(HIGHMEM_START)) - size = PFN_DOWN(HIGHMEM_START) - curr_pfn; - if (!size) + if (start >= max_low_pfn) continue; + if (start < reserved_end) + start = reserved_end; + if (end > max_low_pfn) + end = max_low_pfn; /* - * ... finally, did all the rounding and playing - * around just make the area go away? + * ... finally, is the area going away? */ - if (last_pfn <= curr_pfn) + if (end <= start) continue; + size = end - start; /* Register lowmem ranges */ - free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size)); - memory_present(0, curr_pfn, curr_pfn + size - 1); + free_bootmem(PFN_PHYS(start), size << PAGE_SHIFT); + memory_present(0, start, end); } - /* Reserve the bootmap memory. */ - reserve_bootmem(PFN_PHYS(first_usable_pfn), bootmap_size); -#endif /* CONFIG_SGI_IP27 */ - -#ifdef CONFIG_BLK_DEV_INITRD - initrd_below_start_ok = 1; - if (initrd_start) { - unsigned long initrd_size = ((unsigned char *)initrd_end) - - ((unsigned char *)initrd_start); - const int width = sizeof(long) * 2; - - printk("Initial ramdisk at: 0x%p (%lu bytes)\n", - (void *)initrd_start, initrd_size); - - if (CPHYSADDR(initrd_end) > PFN_PHYS(max_low_pfn)) { - printk("initrd extends beyond end of memory " - "(0x%0*Lx > 0x%0*Lx)\ndisabling initrd\n", - width, - (unsigned long long) CPHYSADDR(initrd_end), - width, - (unsigned long long) PFN_PHYS(max_low_pfn)); - initrd_start = initrd_end = 0; - initrd_reserve_bootmem = 0; - } + /* + * Reserve the bootmap memory. + */ + reserve_bootmem(PFN_PHYS(mapstart), bootmap_size); - if (initrd_reserve_bootmem) - reserve_bootmem(CPHYSADDR(initrd_start), initrd_size); - } -#endif /* CONFIG_BLK_DEV_INITRD */ + /* + * Reserve initrd memory if needed. + */ + finalize_initrd(); } +#endif /* CONFIG_SGI_IP27 */ + /* * arch_mem_init - initialize memory managment subsystem * * o plat_mem_setup() detects the memory configuration and will record detected * memory areas using add_memory_region. - * o parse_cmdline_early() parses the command line for mem= options which, - * iff detected, will override the results of the automatic detection. * * At this stage the memory configuration of the system is known to the * kernel but generic memory managment system is still entirely uninitialized. @@ -466,28 +369,65 @@ static inline void bootmem_init(void) * initialization hook for anything else was introduced. */ -extern void plat_mem_setup(void); +static int usermem __initdata = 0; + +static int __init early_parse_mem(char *p) +{ + unsigned long start, size; + + /* + * If a user specifies memory size, we + * blow away any automatically generated + * size. + */ + if (usermem == 0) { + boot_mem_map.nr_map = 0; + usermem = 1; + } + start = 0; + size = memparse(p, &p); + if (*p == '@') + start = memparse(p + 1, &p); + + add_memory_region(start, size, BOOT_MEM_RAM); + return 0; +} +early_param("mem", early_parse_mem); static void __init arch_mem_init(char **cmdline_p) { + extern void plat_mem_setup(void); + /* call board setup routine */ plat_mem_setup(); + printk("Determined physical RAM map:\n"); + print_memory_map(); + strlcpy(command_line, arcs_cmdline, sizeof(command_line)); strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; - parse_cmdline_early(); + parse_early_param(); + + if (usermem) { + printk("User-defined physical RAM map:\n"); + print_memory_map(); + } + bootmem_init(); sparse_init(); paging_init(); } -static inline void resource_init(void) +static void __init resource_init(void) { int i; + if (UNCAC_BASE != IO_BASE) + return; + code_resource.start = virt_to_phys(&_text); code_resource.end = virt_to_phys(&_etext) - 1; data_resource.start = virt_to_phys(&_etext); @@ -502,10 +442,10 @@ static inline void resource_init(void) start = boot_mem_map.map[i].addr; end = boot_mem_map.map[i].addr + boot_mem_map.map[i].size - 1; - if (start >= MAXMEM) + if (start >= HIGHMEM_START) continue; - if (end >= MAXMEM) - end = MAXMEM - 1; + if (end >= HIGHMEM_START) + end = HIGHMEM_START - 1; res = alloc_bootmem(sizeof(struct resource)); switch (boot_mem_map.map[i].type) { @@ -534,9 +474,6 @@ static inline void resource_init(void) } } -#undef MAXMEM -#undef MAXMEM_PFN - void __init setup_arch(char **cmdline_p) { cpu_probe(); diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h index ce6cb915c0a7..b1f09d54ebe6 100644 --- a/arch/mips/kernel/signal-common.h +++ b/arch/mips/kernel/signal-common.h @@ -8,7 +8,6 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */ -#include <linux/config.h> static inline int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 402efd27c79e..b9d358e05214 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -7,7 +7,6 @@ * Copyright (C) 1994 - 2000 Ralf Baechle * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */ -#include <linux/config.h> #include <linux/cache.h> #include <linux/sched.h> #include <linux/mm.h> @@ -425,15 +424,11 @@ void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - if (try_to_freeze()) - goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) oldset = ¤t->saved_sigmask; else oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ @@ -447,9 +442,10 @@ void do_signal(struct pt_regs *regs) if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); } + + return; } -no_signal: /* * Who's code doesn't conform to the restartable syscall convention * dies here!!! The li instruction, a single machine instruction, @@ -467,6 +463,7 @@ no_signal: regs->regs[7] = regs->regs[26]; regs->cp0_epc -= 4; } + regs->regs[0] = 0; /* Don't deal with this again. */ } /* diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index f32a22997c3d..c86a5ddff050 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -815,9 +815,6 @@ void do_signal32(struct pt_regs *regs) if (!user_mode(regs)) return; - if (try_to_freeze()) - goto no_signal; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) oldset = ¤t->saved_sigmask; else @@ -836,9 +833,10 @@ void do_signal32(struct pt_regs *regs) if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); } + + return; } -no_signal: /* * Who's code doesn't conform to the restartable syscall convention * dies here!!! The li instruction, a single machine instruction, @@ -856,6 +854,7 @@ no_signal: regs->regs[7] = regs->regs[26]; regs->cp0_epc -= 4; } + regs->regs[0] = 0; /* Don't deal with this again. */ } /* diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c index 57770902b9ae..766253c44f3f 100644 --- a/arch/mips/kernel/smp-mt.c +++ b/arch/mips/kernel/smp-mt.c @@ -130,13 +130,13 @@ irqreturn_t ipi_call_interrupt(int irq, void *dev_id, struct pt_regs *regs) static struct irqaction irq_resched = { .handler = ipi_resched_interrupt, - .flags = SA_INTERRUPT, + .flags = IRQF_DISABLED, .name = "IPI_resched" }; static struct irqaction irq_call = { .handler = ipi_call_interrupt, - .flags = SA_INTERRUPT, + .flags = IRQF_DISABLED, .name = "IPI_call" }; @@ -203,7 +203,7 @@ void plat_smp_setup(void) write_vpe_c0_config( read_c0_config()); /* make sure there are no software interrupts pending */ - write_vpe_c0_cause(read_vpe_c0_cause() & ~(C_SW1|C_SW0)); + write_vpe_c0_cause(0); /* Propagate Config7 */ write_vpe_c0_config7(read_c0_config7()); diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 298f82fe8440..221895802dca 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -319,6 +319,32 @@ static void flush_tlb_mm_ipi(void *mm) } /* + * Special Variant of smp_call_function for use by TLB functions: + * + * o No return value + * o collapses to normal function call on UP kernels + * o collapses to normal function call on systems with a single shared + * primary cache. + * o CONFIG_MIPS_MT_SMTC currently implies there is only one physical core. + */ +static inline void smp_on_other_tlbs(void (*func) (void *info), void *info) +{ +#ifndef CONFIG_MIPS_MT_SMTC + smp_call_function(func, info, 1, 1); +#endif +} + +static inline void smp_on_each_tlb(void (*func) (void *info), void *info) +{ + preempt_disable(); + + smp_on_other_tlbs(func, info); + func(info); + + preempt_enable(); +} + +/* * The following tlb flush calls are invoked when old translations are * being torn down, or pte attributes are changing. For single threaded * address spaces, a new context is obtained on the current cpu, and tlb @@ -336,7 +362,7 @@ void flush_tlb_mm(struct mm_struct *mm) preempt_disable(); if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) { - smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1, 1); + smp_on_other_tlbs(flush_tlb_mm_ipi, (void *)mm); } else { int i; for (i = 0; i < num_online_cpus(); i++) @@ -372,7 +398,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l fd.vma = vma; fd.addr1 = start; fd.addr2 = end; - smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1, 1); + smp_on_other_tlbs(flush_tlb_range_ipi, (void *)&fd); } else { int i; for (i = 0; i < num_online_cpus(); i++) @@ -414,7 +440,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page) fd.vma = vma; fd.addr1 = page; - smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1, 1); + smp_on_other_tlbs(flush_tlb_page_ipi, (void *)&fd); } else { int i; for (i = 0; i < num_online_cpus(); i++) @@ -434,8 +460,7 @@ static void flush_tlb_one_ipi(void *info) void flush_tlb_one(unsigned long vaddr) { - smp_call_function(flush_tlb_one_ipi, (void *) vaddr, 1, 1); - local_flush_tlb_one(vaddr); + smp_on_each_tlb(flush_tlb_one_ipi, (void *) vaddr); } static DEFINE_PER_CPU(struct cpu, cpu_devices); @@ -446,7 +471,7 @@ static int __init topology_init(void) int ret; for_each_present_cpu(cpu) { - ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL); + ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu); if (ret) printk(KERN_WARNING "topology_init: register_cpu %d " "failed (%d)\n", cpu, ret); diff --git a/arch/mips/kernel/smtc-asm.S b/arch/mips/kernel/smtc-asm.S index c9d65196d917..76cb31d57482 100644 --- a/arch/mips/kernel/smtc-asm.S +++ b/arch/mips/kernel/smtc-asm.S @@ -8,7 +8,7 @@ #include <asm/regdef.h> #include <asm/asmmacro.h> #include <asm/stackframe.h> -#include <asm/stackframe.h> +#include <asm/irqflags.h> /* * "Software Interrupt" linkage. @@ -52,12 +52,12 @@ FEXPORT(__smtc_ipi_vector) .set noat /* Disable thread scheduling to make Status update atomic */ DMT 27 # dmt k1 - ehb + _ehb /* Set EXL */ mfc0 k0,CP0_STATUS ori k0,k0,ST0_EXL mtc0 k0,CP0_STATUS - ehb + _ehb /* Thread scheduling now inhibited by EXL. Restore TE state. */ andi k1,k1,VPECONTROL_TE beqz k1,1f @@ -82,7 +82,7 @@ FEXPORT(__smtc_ipi_vector) li k1,ST0_CU0 or k1,k1,k0 mtc0 k1,CP0_STATUS - ehb + _ehb get_saved_sp /* Interrupting TC will have pre-set values in slots in the new frame */ 2: subu k1,k1,PT_SIZE @@ -90,12 +90,13 @@ FEXPORT(__smtc_ipi_vector) lw k0,PT_TCSTATUS(k1) /* Write it to TCStatus to restore CU/KSU/IXMT state */ mtc0 k0,$2,1 - ehb + _ehb lw k0,PT_EPC(k1) mtc0 k0,CP0_EPC /* Save all will redundantly recompute the SP, but use it for now */ SAVE_ALL CLI + TRACE_IRQS_OFF move a0,sp /* Function to be invoked passed stack pad slot 5 */ lw t0,PT_PADSLOT5(sp) @@ -116,7 +117,7 @@ LEAF(self_ipi) mfc0 t0,CP0_TCSTATUS ori t1,t0,TCSTATUS_IXMT mtc0 t1,CP0_TCSTATUS - ehb + _ehb /* We know we're in kernel mode, so prepare stack frame */ subu t1,sp,PT_SIZE sw ra,PT_EPC(t1) diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index 2e8e52c135e6..604bcc5cb7c8 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -127,7 +127,7 @@ static int __init stlb_disable(char *s) static int __init asidmask_set(char *str) { get_option(&str, &asidmask); - switch(asidmask) { + switch (asidmask) { case 0x1: case 0x3: case 0x7: @@ -249,7 +249,7 @@ void smtc_configure_tlb(void) /* * Only count if the MMU Type indicated is TLB */ - if(((read_vpe_c0_config() & MIPS_CONF_MT) >> 7) == 1) { + if (((read_vpe_c0_config() & MIPS_CONF_MT) >> 7) == 1) { config1val = read_vpe_c0_config1(); tlbsiz += ((config1val >> 25) & 0x3f) + 1; } @@ -367,7 +367,7 @@ void mipsmt_prepare_cpus(void) dvpe(); dmt(); - freeIPIq.lock = SPIN_LOCK_UNLOCKED; + spin_lock_init(&freeIPIq.lock); /* * We probably don't have as many VPEs as we do SMP "CPUs", @@ -375,7 +375,7 @@ void mipsmt_prepare_cpus(void) */ for (i=0; i<NR_CPUS; i++) { IPIQ[i].head = IPIQ[i].tail = NULL; - IPIQ[i].lock = SPIN_LOCK_UNLOCKED; + spin_lock_init(&IPIQ[i].lock); IPIQ[i].depth = 0; ipi_timer_latch[i] = 0; } @@ -500,7 +500,7 @@ void mipsmt_prepare_cpus(void) /* Set up coprocessor affinity CPU mask(s) */ for (tc = 0; tc < ntc; tc++) { - if(cpu_data[tc].options & MIPS_CPU_FPU) + if (cpu_data[tc].options & MIPS_CPU_FPU) cpu_set(tc, mt_fpu_cpumask); } @@ -577,13 +577,13 @@ void smtc_init_secondary(void) { /* * Start timer on secondary VPEs if necessary. - * mips_timer_setup should already have been invoked by init/main + * plat_timer_setup has already have been invoked by init/main * on "boot" TC. Like per_cpu_trap_init() hack, this assumes that * SMTC init code assigns TCs consdecutively and in ascending order * to across available VPEs. */ - if(((read_c0_tcbind() & TCBIND_CURTC) != 0) - && ((read_c0_tcbind() & TCBIND_CURVPE) + if (((read_c0_tcbind() & TCBIND_CURTC) != 0) && + ((read_c0_tcbind() & TCBIND_CURVPE) != cpu_data[smp_processor_id() - 1].vpe_id)){ write_c0_compare (read_c0_count() + mips_hpt_frequency/HZ); } @@ -757,8 +757,8 @@ void smtc_send_ipi(int cpu, int type, unsigned int action) write_tc_c0_tchalt(0); UNLOCK_CORE_PRA(); /* Try to reduce redundant timer interrupt messages */ - if(type == SMTC_CLOCK_TICK) { - if(atomic_postincrement(&ipi_timer_latch[cpu])!=0) { + if (type == SMTC_CLOCK_TICK) { + if (atomic_postincrement(&ipi_timer_latch[cpu])!=0){ smtc_ipi_nq(&freeIPIq, pipi); return; } @@ -797,7 +797,7 @@ void post_direct_ipi(int cpu, struct smtc_ipi *pipi) * CU bit of Status is indicator that TC was * already running on a kernel stack... */ - if(tcstatus & ST0_CU0) { + if (tcstatus & ST0_CU0) { /* Note that this "- 1" is pointer arithmetic */ kstack = ((struct pt_regs *)read_tc_gpr_sp()) - 1; } else { @@ -840,31 +840,31 @@ void ipi_decode(struct pt_regs *regs, struct smtc_ipi *pipi) smtc_ipi_nq(&freeIPIq, pipi); switch (type_copy) { - case SMTC_CLOCK_TICK: - /* Invoke Clock "Interrupt" */ - ipi_timer_latch[dest_copy] = 0; + case SMTC_CLOCK_TICK: + /* Invoke Clock "Interrupt" */ + ipi_timer_latch[dest_copy] = 0; #ifdef SMTC_IDLE_HOOK_DEBUG - clock_hang_reported[dest_copy] = 0; + clock_hang_reported[dest_copy] = 0; #endif /* SMTC_IDLE_HOOK_DEBUG */ - local_timer_interrupt(0, NULL, regs); + local_timer_interrupt(0, NULL, regs); + break; + case LINUX_SMP_IPI: + switch ((int)arg_copy) { + case SMP_RESCHEDULE_YOURSELF: + ipi_resched_interrupt(regs); break; - case LINUX_SMP_IPI: - switch ((int)arg_copy) { - case SMP_RESCHEDULE_YOURSELF: - ipi_resched_interrupt(regs); - break; - case SMP_CALL_FUNCTION: - ipi_call_interrupt(regs); - break; - default: - printk("Impossible SMTC IPI Argument 0x%x\n", - (int)arg_copy); - break; - } + case SMP_CALL_FUNCTION: + ipi_call_interrupt(regs); break; default: - printk("Impossible SMTC IPI Type 0x%x\n", type_copy); + printk("Impossible SMTC IPI Argument 0x%x\n", + (int)arg_copy); break; + } + break; + default: + printk("Impossible SMTC IPI Type 0x%x\n", type_copy); + break; } } @@ -879,7 +879,7 @@ void deferred_smtc_ipi(struct pt_regs *regs) * Test is not atomic, but much faster than a dequeue, * and the vast majority of invocations will have a null queue. */ - if(IPIQ[q].head != NULL) { + if (IPIQ[q].head != NULL) { while((pipi = smtc_ipi_dq(&IPIQ[q])) != NULL) { /* ipi_decode() should be called with interrupts off */ local_irq_save(flags); @@ -1002,7 +1002,7 @@ void setup_cross_vpe_interrupts(void) set_vi_handler(MIPS_CPU_IPI_IRQ, ipi_irq_dispatch); irq_ipi.handler = ipi_interrupt; - irq_ipi.flags = SA_INTERRUPT; + irq_ipi.flags = IRQF_DISABLED; irq_ipi.name = "SMTC_IPI"; setup_irq_smtc(cpu_ipi_irq, &irq_ipi, (0x100 << MIPS_CPU_IPI_IRQ)); @@ -1254,7 +1254,7 @@ void smtc_flush_tlb_asid(unsigned long asid) tlb_read(); ehb(); ehi = read_c0_entryhi(); - if((ehi & ASID_MASK) == asid) { + if ((ehi & ASID_MASK) == asid) { /* * Invalidate only entries with specified ASID, * makiing sure all entries differ. diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index 5e8a18a8e2bd..9951240cc3fd 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -7,7 +7,6 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2001 MIPS Technologies, Inc. */ -#include <linux/config.h> #include <linux/a.out.h> #include <linux/capability.h> #include <linux/errno.h> @@ -264,7 +263,7 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name) return error; } -void sys_set_thread_area(unsigned long addr) +asmlinkage int sys_set_thread_area(unsigned long addr) { struct thread_info *ti = task_thread_info(current); @@ -272,6 +271,8 @@ void sys_set_thread_area(unsigned long addr) /* If some future MIPS implementation has this register in hardware, * we will need to update it here (and in context switches). */ + + return 0; } asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3) @@ -301,7 +302,7 @@ asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3) * * This is really horribly ugly. */ -asmlinkage int sys_ipc (uint call, int first, int second, +asmlinkage int sys_ipc (unsigned int call, int first, int second, unsigned long third, void __user *ptr, long fifth) { int version, ret; @@ -359,18 +360,18 @@ asmlinkage int sys_ipc (uint call, int first, int second, case SHMAT: switch (version) { default: { - ulong raddr; + unsigned long raddr; ret = do_shmat (first, (char __user *) ptr, second, &raddr); if (ret) return ret; - return put_user (raddr, (ulong __user *) third); + return put_user (raddr, (unsigned long __user *) third); } case 1: /* iBCS2 emulator entry point */ if (!segment_eq(get_fs(), get_ds())) return -EINVAL; return do_shmat (first, (char __user *) ptr, second, - (ulong *) third); + (unsigned long *) third); } case SHMDT: return sys_shmdt ((char __user *)ptr); diff --git a/arch/mips/kernel/sysirix.c b/arch/mips/kernel/sysirix.c index 19e1ef43eb4b..1137dd6ea7aa 100644 --- a/arch/mips/kernel/sysirix.c +++ b/arch/mips/kernel/sysirix.c @@ -31,6 +31,7 @@ #include <linux/socket.h> #include <linux/security.h> #include <linux/syscalls.h> +#include <linux/resource.h> #include <asm/ptrace.h> #include <asm/page.h> @@ -235,7 +236,6 @@ asmlinkage int irix_prctl(unsigned option, ...) #undef DEBUG_PROCGRPS extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt); -extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru); extern char *prom_getenv(char *name); extern long prom_setenv(char *name, char *value); diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index 13ff4da598cd..6ab8d975a974 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -11,7 +11,6 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ -#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> @@ -435,7 +434,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) /* * call the generic timer interrupt handling */ - do_timer(regs); + do_timer(1); /* * If we have an externally synchronized Linux clock, then update @@ -567,20 +566,19 @@ asmlinkage void ll_local_timer_interrupt(int irq, struct pt_regs *regs) * 2) setup xtime based on rtc_mips_get_time(). * 3) choose a appropriate gettimeoffset routine. * 4) calculate a couple of cached variables for later usage - * 5) board_timer_setup() - + * 5) plat_timer_setup() - * a) (optional) over-write any choices made above by time_init(). * b) machine specific code should setup the timer irqaction. * c) enable the timer interrupt */ void (*board_time_init)(void); -void (*board_timer_setup)(struct irqaction *irq); unsigned int mips_hpt_frequency; static struct irqaction timer_irqaction = { .handler = timer_interrupt, - .flags = SA_INTERRUPT, + .flags = IRQF_DISABLED, .name = "timer", }; @@ -719,7 +717,7 @@ void __init time_init(void) * to be NULL function so that we are sure the high-level code * is not invoked accidentally. */ - board_timer_setup(&timer_irqaction); + plat_timer_setup(&timer_irqaction); } #define FEBRUARY 2 diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index ad16eceb24dd..e51d8fd9a152 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -11,7 +11,6 @@ * Copyright (C) 2000, 01 MIPS Technologies, Inc. * Copyright (C) 2002, 2003, 2004, 2005 Maciej W. Rozycki */ -#include <linux/config.h> #include <linux/init.h> #include <linux/mm.h> #include <linux/module.h> @@ -21,6 +20,7 @@ #include <linux/spinlock.h> #include <linux/kallsyms.h> #include <linux/bootmem.h> +#include <linux/interrupt.h> #include <asm/bootinfo.h> #include <asm/branch.h> @@ -73,28 +73,68 @@ void (*board_nmi_handler_setup)(void); void (*board_ejtag_handler_setup)(void); void (*board_bind_eic_interrupt)(int irq, int regset); -/* - * These constant is for searching for possible module text segments. - * MODULE_RANGE is a guess of how much space is likely to be vmalloced. - */ -#define MODULE_RANGE (8*1024*1024) + +static void show_raw_backtrace(unsigned long reg29) +{ + unsigned long *sp = (unsigned long *)reg29; + unsigned long addr; + + printk("Call Trace:"); +#ifdef CONFIG_KALLSYMS + printk("\n"); +#endif + while (!kstack_end(sp)) { + addr = *sp++; + if (__kernel_text_address(addr)) + print_ip_sym(addr); + } + printk("\n"); +} + +#ifdef CONFIG_KALLSYMS +static int raw_show_trace; +static int __init set_raw_show_trace(char *str) +{ + raw_show_trace = 1; + return 1; +} +__setup("raw_show_trace", set_raw_show_trace); + +extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long ra); + +static void show_backtrace(struct task_struct *task, struct pt_regs *regs) +{ + unsigned long sp = regs->regs[29]; + unsigned long ra = regs->regs[31]; + unsigned long pc = regs->cp0_epc; + + if (raw_show_trace || !__kernel_text_address(pc)) { + show_raw_backtrace(sp); + return; + } + printk("Call Trace:\n"); + do { + print_ip_sym(pc); + pc = unwind_stack(task, &sp, pc, ra); + ra = 0; + } while (pc); + printk("\n"); +} +#else +#define show_backtrace(task, r) show_raw_backtrace((r)->regs[29]); +#endif /* * This routine abuses get_user()/put_user() to reference pointers * with at least a bit of error checking ... */ -void show_stack(struct task_struct *task, unsigned long *sp) +static void show_stacktrace(struct task_struct *task, struct pt_regs *regs) { const int field = 2 * sizeof(unsigned long); long stackdata; int i; - - if (!sp) { - if (task && task != current) - sp = (unsigned long *) task->thread.reg29; - else - sp = (unsigned long *) &sp; - } + unsigned long *sp = (unsigned long *)regs->regs[29]; printk("Stack :"); i = 0; @@ -115,32 +155,48 @@ void show_stack(struct task_struct *task, unsigned long *sp) i++; } printk("\n"); + show_backtrace(task, regs); } -void show_trace(struct task_struct *task, unsigned long *stack) +static __always_inline void prepare_frametrace(struct pt_regs *regs) { - const int field = 2 * sizeof(unsigned long); - unsigned long addr; - - if (!stack) { - if (task && task != current) - stack = (unsigned long *) task->thread.reg29; - else - stack = (unsigned long *) &stack; - } - - printk("Call Trace:"); -#ifdef CONFIG_KALLSYMS - printk("\n"); + __asm__ __volatile__( + ".set push\n\t" + ".set noat\n\t" +#ifdef CONFIG_64BIT + "1: dla $1, 1b\n\t" + "sd $1, %0\n\t" + "sd $29, %1\n\t" + "sd $31, %2\n\t" +#else + "1: la $1, 1b\n\t" + "sw $1, %0\n\t" + "sw $29, %1\n\t" + "sw $31, %2\n\t" #endif - while (!kstack_end(stack)) { - addr = *stack++; - if (__kernel_text_address(addr)) { - printk(" [<%0*lx>] ", field, addr); - print_symbol("%s\n", addr); + ".set pop\n\t" + : "=m" (regs->cp0_epc), + "=m" (regs->regs[29]), "=m" (regs->regs[31]) + : : "memory"); +} + +void show_stack(struct task_struct *task, unsigned long *sp) +{ + struct pt_regs regs; + if (sp) { + regs.regs[29] = (unsigned long)sp; + regs.regs[31] = 0; + regs.cp0_epc = 0; + } else { + if (task && task != current) { + regs.regs[29] = task->thread.reg29; + regs.regs[31] = 0; + regs.cp0_epc = task->thread.reg31; + } else { + prepare_frametrace(®s); } } - printk("\n"); + show_stacktrace(task, ®s); } /* @@ -148,9 +204,15 @@ void show_trace(struct task_struct *task, unsigned long *stack) */ void dump_stack(void) { - unsigned long stack; + struct pt_regs regs; - show_trace(current, &stack); + /* + * Remove any garbage that may be in regs (specially func + * addresses) to avoid show_raw_backtrace() to report them + */ + memset(®s, 0, sizeof(regs)); + prepare_frametrace(®s); + show_backtrace(current, ®s); } EXPORT_SYMBOL(dump_stack); @@ -269,8 +331,7 @@ void show_registers(struct pt_regs *regs) print_modules(); printk("Process %s (pid: %d, threadinfo=%p, task=%p)\n", current->comm, current->pid, current_thread_info(), current); - show_stack(current, (long *) regs->regs[29]); - show_trace(current, (long *) regs->regs[29]); + show_stacktrace(current, regs); show_code((unsigned int *) regs->cp0_epc); printk("\n"); } @@ -293,6 +354,16 @@ NORET_TYPE void ATTRIB_NORET die(const char * str, struct pt_regs * regs) printk("%s[#%d]:\n", str, ++die_counter); show_registers(regs); spin_unlock_irq(&die_lock); + + if (in_interrupt()) + panic("Fatal exception in interrupt"); + + if (panic_on_oops) { + printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n"); + ssleep(5); + panic("Fatal exception"); + } + do_exit(SIGSEGV); } @@ -570,6 +641,8 @@ asmlinkage void do_ov(struct pt_regs *regs) */ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31) { + die_if_kernel("FP exception in kernel code", regs); + if (fcr31 & FPU_CSR_UNI_X) { int sig; @@ -848,31 +921,29 @@ asmlinkage void do_mt(struct pt_regs *regs) { int subcode; - die_if_kernel("MIPS MT Thread exception in kernel", regs); - subcode = (read_vpe_c0_vpecontrol() & VPECONTROL_EXCPT) >> VPECONTROL_EXCPT_SHIFT; switch (subcode) { case 0: - printk(KERN_ERR "Thread Underflow\n"); + printk(KERN_DEBUG "Thread Underflow\n"); break; case 1: - printk(KERN_ERR "Thread Overflow\n"); + printk(KERN_DEBUG "Thread Overflow\n"); break; case 2: - printk(KERN_ERR "Invalid YIELD Qualifier\n"); + printk(KERN_DEBUG "Invalid YIELD Qualifier\n"); break; case 3: - printk(KERN_ERR "Gating Storage Exception\n"); + printk(KERN_DEBUG "Gating Storage Exception\n"); break; case 4: - printk(KERN_ERR "YIELD Scheduler Exception\n"); + printk(KERN_DEBUG "YIELD Scheduler Exception\n"); break; case 5: - printk(KERN_ERR "Gating Storage Schedulier Exception\n"); + printk(KERN_DEBUG "Gating Storage Schedulier Exception\n"); break; default: - printk(KERN_ERR "*** UNKNOWN THREAD EXCEPTION %d ***\n", + printk(KERN_DEBUG "*** UNKNOWN THREAD EXCEPTION %d ***\n", subcode); break; } @@ -981,10 +1052,10 @@ void ejtag_exception_handler(struct pt_regs *regs) unsigned long depc, old_epc; unsigned int debug; - printk("SDBBP EJTAG debug exception - not handled yet, just ignored!\n"); + printk(KERN_DEBUG "SDBBP EJTAG debug exception - not handled yet, just ignored!\n"); depc = read_c0_depc(); debug = read_c0_debug(); - printk("c0_depc = %0*lx, DEBUG = %08x\n", field, depc, debug); + printk(KERN_DEBUG "c0_depc = %0*lx, DEBUG = %08x\n", field, depc, debug); if (debug & 0x80000000) { /* * In branch delay slot. @@ -1002,7 +1073,7 @@ void ejtag_exception_handler(struct pt_regs *regs) write_c0_depc(depc); #if 0 - printk("\n\n----- Enable EJTAG single stepping ----\n\n"); + printk(KERN_DEBUG "\n\n----- Enable EJTAG single stepping ----\n\n"); write_c0_debug(debug | 0x100); #endif } @@ -1050,7 +1121,7 @@ void *set_except_vector(int n, void *addr) return (void *)old_handler; } -#ifdef CONFIG_CPU_MIPSR2 +#ifdef CONFIG_CPU_MIPSR2_SRS /* * MIPSR2 shadow register set allocation * FIXME: SMP... @@ -1069,11 +1140,9 @@ static struct shadow_registers { static void mips_srs_init(void) { -#ifdef CONFIG_CPU_MIPSR2_SRS shadow_registers.sr_supported = ((read_c0_srsctl() >> 26) & 0x0f) + 1; printk(KERN_INFO "%d MIPSR2 register sets available\n", shadow_registers.sr_supported); -#endif shadow_registers.sr_allocated = 1; /* Set 0 used by kernel */ } @@ -1198,7 +1267,14 @@ void *set_vi_handler(int n, void *addr) { return set_vi_srs_handler(n, addr, 0); } -#endif + +#else + +static inline void mips_srs_init(void) +{ +} + +#endif /* CONFIG_CPU_MIPSR2_SRS */ /* * This is used by native signal handling @@ -1388,9 +1464,7 @@ void __init trap_init(void) else ebase = CAC_BASE; -#ifdef CONFIG_CPU_MIPSR2 mips_srs_init(); -#endif per_cpu_trap_init(); diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 5b5a3736cbbc..7e7d54823486 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -72,7 +72,6 @@ * A store crossing a page boundary might be executed only partially. * Undo the partial store in this case. */ -#include <linux/config.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/signal.h> diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index b84d1f9ce28e..0bb9cd889456 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -1,4 +1,3 @@ -#include <linux/config.h> #include <asm/asm-offsets.h> #include <asm-generic/vmlinux.lds.h> diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c index 85d7df7b18e1..51ddd2166898 100644 --- a/arch/mips/kernel/vpe.c +++ b/arch/mips/kernel/vpe.c @@ -28,7 +28,6 @@ * i.e cat spapp >/dev/vpe1. */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/fs.h> @@ -769,10 +768,16 @@ int vpe_run(struct vpe * v) */ write_tc_c0_tcbind((read_tc_c0_tcbind() & ~TCBIND_CURVPE) | v->minor); + write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() & ~(VPECONF0_VPA)); + + back_to_back_c0_hazard(); + /* Set up the XTC bit in vpeconf0 to point at our tc */ write_vpe_c0_vpeconf0( (read_vpe_c0_vpeconf0() & ~(VPECONF0_XTC)) | (t->index << VPECONF0_XTC_SHIFT)); + back_to_back_c0_hazard(); + /* enable this VPE */ write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() | VPECONF0_VPA); |
