From 5f8c9908f200b775a3d6c345bc6f3e928e2426a9 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 8 May 2007 11:55:21 +0900 Subject: sh: generic quicklist support. This moves SH over to the generic quicklists. As per x86_64, we have special mappings for the PGDs, so these go on their own list.. Signed-off-by: Paul Mundt --- arch/sh/kernel/process.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sh/kernel/process.c') diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 329b3f3051de..4688b890aef8 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -18,6 +18,7 @@ #include #include #include +#include #include static int hlt_counter; @@ -64,6 +65,7 @@ void cpu_idle(void) preempt_enable_no_resched(); schedule(); preempt_disable(); + check_pgt_cache(); } } -- cgit v1.2.1 From bd0799977cb9b68aa6a39e9630aeea4778a58385 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 8 May 2007 14:50:59 +0900 Subject: sh: Support for SH-2A 32-bit opcodes. SH-2A supports both 16 and 32-bit instructions, add a simple helper for figuring out the instruction size in the places where there are hardcoded 16-bit assumptions. Signed-off-by: Paul Mundt --- arch/sh/kernel/process.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/sh/kernel/process.c') diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 4688b890aef8..209cc9b42186 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -19,6 +19,7 @@ #include #include #include +#include #include static int hlt_counter; @@ -497,7 +498,7 @@ asmlinkage void debug_trap_handler(unsigned long r4, unsigned long r5, struct pt_regs *regs = RELOC_HIDE(&__regs, 0); /* Rewind */ - regs->pc -= 2; + regs->pc -= instruction_size(regs->pc); if (notify_die(DIE_TRAP, regs, regs->tra & 0xff, SIGTRAP) == NOTIFY_STOP) @@ -516,7 +517,7 @@ asmlinkage void bug_trap_handler(unsigned long r4, unsigned long r5, struct pt_regs *regs = RELOC_HIDE(&__regs, 0); /* Rewind */ - regs->pc -= 2; + regs->pc -= instruction_size(regs->pc); if (notify_die(DIE_TRAP, regs, TRAPA_BUG_OPCODE & 0xff, SIGTRAP) == NOTIFY_STOP) -- cgit v1.2.1 From 53f983a90d7908bcece51f86180c7c9b575a1e4d Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 8 May 2007 15:31:48 +0900 Subject: sh: Fix PC adjustments for varying opcode length. There are a few different cases for figuring out how to size the instruction. We read in the instruction located at regs->pc - 4 when rewinding the opcode to figure out if there's a 32-bit opcode before the faulting instruction, with a default of a - 2 adjustment on a mismatch. In practice this works for the cases where pc - 4 is just another 16-bit opcode, or we happen to have a 32-bit and a 16-bit immediately preceeding the pc value. In the cases where we aren't rewinding, this is much less ugly.. We also don't bother fixing up the places where we're explicitly dealing with 16-bit instructions, since this might lead to confusion regarding the encoding size possibilities on other CPU variants. Signed-off-by: Paul Mundt --- arch/sh/kernel/process.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/sh/kernel/process.c') diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 209cc9b42186..9005b2f12aaa 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -498,7 +498,7 @@ asmlinkage void debug_trap_handler(unsigned long r4, unsigned long r5, struct pt_regs *regs = RELOC_HIDE(&__regs, 0); /* Rewind */ - regs->pc -= instruction_size(regs->pc); + regs->pc -= instruction_size(ctrl_inw(regs->pc - 4)); if (notify_die(DIE_TRAP, regs, regs->tra & 0xff, SIGTRAP) == NOTIFY_STOP) @@ -517,7 +517,7 @@ asmlinkage void bug_trap_handler(unsigned long r4, unsigned long r5, struct pt_regs *regs = RELOC_HIDE(&__regs, 0); /* Rewind */ - regs->pc -= instruction_size(regs->pc); + regs->pc -= instruction_size(ctrl_inw(regs->pc - 4)); if (notify_die(DIE_TRAP, regs, TRAPA_BUG_OPCODE & 0xff, SIGTRAP) == NOTIFY_STOP) -- cgit v1.2.1 From b118ca572db5af832c6fc1af7b301105378d1a08 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 9 May 2007 10:55:38 +0900 Subject: sh: Convert to common die chain. This went in immediately after SH added the die chain notifiers, so move over to that instead.. Signed-off-by: Paul Mundt --- arch/sh/kernel/process.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sh/kernel/process.c') diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 9005b2f12aaa..d755589ba8b1 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include #include #include @@ -500,7 +500,7 @@ asmlinkage void debug_trap_handler(unsigned long r4, unsigned long r5, /* Rewind */ regs->pc -= instruction_size(ctrl_inw(regs->pc - 4)); - if (notify_die(DIE_TRAP, regs, regs->tra & 0xff, + if (notify_die(DIE_TRAP, "debug trap", regs, 0, regs->tra & 0xff, SIGTRAP) == NOTIFY_STOP) return; @@ -519,7 +519,7 @@ asmlinkage void bug_trap_handler(unsigned long r4, unsigned long r5, /* Rewind */ regs->pc -= instruction_size(ctrl_inw(regs->pc - 4)); - if (notify_die(DIE_TRAP, regs, TRAPA_BUG_OPCODE & 0xff, + if (notify_die(DIE_TRAP, "bug trap", regs, 0, TRAPA_BUG_OPCODE & 0xff, SIGTRAP) == NOTIFY_STOP) return; -- cgit v1.2.1 From 57be2b484a417bffae66359b9b89e7239480b729 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 9 May 2007 17:33:24 +0900 Subject: sh: clockevent/clocksource/hrtimers/nohz TMU support. This adds basic support for clockevents and clocksources, presently only implemented for TMU-based systems (which are the majority of SH-3 and SH-4 systems). The old NO_IDLE_HZ implementation is also dropped completely, the only users of this were on TMU-based systems anyways. More work needs to be done to generalize the TMU handling, in that the current implementation is rather tied to the notion of TMU0 and TMU1 utilization. Additionally, as more SH timers switch over to this scheme, we'll be able to gut most of the remaining system timer infrastructure that existed before. Signed-off-by: Paul Mundt --- arch/sh/kernel/process.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/sh/kernel/process.c') diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index d755589ba8b1..6b4f5748d0be 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -60,8 +61,10 @@ void cpu_idle(void) if (!idle) idle = default_idle; + tick_nohz_stop_sched_tick(); while (!need_resched()) idle(); + tick_nohz_restart_sched_tick(); preempt_enable_no_resched(); schedule(); -- cgit v1.2.1