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| author | Mark Brown <broonie@kernel.org> | 2016-11-04 12:16:38 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-11-04 12:16:38 -0600 |
| commit | cc9b94029e9ef51787af908e9856b1eed314bc00 (patch) | |
| tree | 9675310b89d0f6fb1f7bd9423f0638c4ee5226fd /arch/mips/kernel/process.c | |
| parent | 13bed58ce8748d430a26e353a09b89f9d613a71f (diff) | |
| parent | 1b5b42216469b05ef4b5916cb40b127dfab1da88 (diff) | |
| download | talos-op-linux-cc9b94029e9ef51787af908e9856b1eed314bc00.tar.gz talos-op-linux-cc9b94029e9ef51787af908e9856b1eed314bc00.zip | |
Merge branch 'topic/error' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-fixed
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 813ed7829c61..9514e5f2209f 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -30,6 +30,7 @@ #include <asm/asm.h> #include <asm/bootinfo.h> #include <asm/cpu.h> +#include <asm/dsemul.h> #include <asm/dsp.h> #include <asm/fpu.h> #include <asm/msa.h> @@ -68,11 +69,22 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) lose_fpu(0); clear_thread_flag(TIF_MSA_CTX_LIVE); clear_used_math(); + atomic_set(¤t->thread.bd_emu_frame, BD_EMUFRAME_NONE); init_dsp(); regs->cp0_epc = pc; regs->regs[29] = sp; } +void exit_thread(struct task_struct *tsk) +{ + /* + * User threads may have allocated a delay slot emulation frame. + * If so, clean up that allocation. + */ + if (!(current->flags & PF_KTHREAD)) + dsemul_thread_cleanup(tsk); +} + int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) { /* @@ -159,6 +171,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, clear_tsk_thread_flag(p, TIF_FPUBOUND); #endif /* CONFIG_MIPS_MT_FPAFF */ + atomic_set(&p->thread.bd_emu_frame, BD_EMUFRAME_NONE); + if (clone_flags & CLONE_SETTLS) ti->tp_value = regs->regs[7]; @@ -555,9 +569,16 @@ static void arch_dump_stack(void *info) dump_stack(); } -void arch_trigger_all_cpu_backtrace(bool include_self) +void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) { - smp_call_function(arch_dump_stack, NULL, 1); + long this_cpu = get_cpu(); + + if (cpumask_test_cpu(this_cpu, mask) && !exclude_self) + dump_stack(); + + smp_call_function_many(mask, arch_dump_stack, NULL, 1); + + put_cpu(); } int mips_get_process_fp_mode(struct task_struct *task) @@ -591,14 +612,14 @@ int mips_set_process_fp_mode(struct task_struct *task, unsigned int value) return -EOPNOTSUPP; /* Avoid inadvertently triggering emulation */ - if ((value & PR_FP_MODE_FR) && cpu_has_fpu && - !(current_cpu_data.fpu_id & MIPS_FPIR_F64)) + if ((value & PR_FP_MODE_FR) && raw_cpu_has_fpu && + !(raw_current_cpu_data.fpu_id & MIPS_FPIR_F64)) return -EOPNOTSUPP; - if ((value & PR_FP_MODE_FRE) && cpu_has_fpu && !cpu_has_fre) + if ((value & PR_FP_MODE_FRE) && raw_cpu_has_fpu && !cpu_has_fre) return -EOPNOTSUPP; /* FR = 0 not supported in MIPS R6 */ - if (!(value & PR_FP_MODE_FR) && cpu_has_fpu && cpu_has_mips_r6) + if (!(value & PR_FP_MODE_FR) && raw_cpu_has_fpu && cpu_has_mips_r6) return -EOPNOTSUPP; /* Proceed with the mode switch */ |
