diff options
author | Kevin Hilman <khilman@linaro.org> | 2015-11-04 10:01:20 -0800 |
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committer | Kevin Hilman <khilman@linaro.org> | 2015-11-04 10:01:20 -0800 |
commit | 49bd04cb11e57c4cd4d2c00feca898537dd6db1f (patch) | |
tree | 846c594b2b1d2f203c24ff32569b6c615822a5dc /arch/arm/kernel | |
parent | 260409578ecbf7ce1725b85f9c082312bff808c0 (diff) | |
parent | 12ba397b828b7e7f5d28a73e9a2ee14470b7edc7 (diff) |
Merge tag 'v4.1.12-rt12' of git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel into v4.1/topic/rtv4.1/topic/rt
v4.1.12-rt12
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r-- | arch/arm/kernel/kgdb.c | 8 | ||||
-rw-r--r-- | arch/arm/kernel/signal.c | 15 | ||||
-rw-r--r-- | arch/arm/kernel/smp.c | 5 |
3 files changed, 18 insertions, 10 deletions
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c index a6ad93c9bce3..fd9eefce0a7b 100644 --- a/arch/arm/kernel/kgdb.c +++ b/arch/arm/kernel/kgdb.c @@ -259,15 +259,17 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt) if (err) return err; - patch_text((void *)bpt->bpt_addr, - *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr); + /* Machine is already stopped, so we can use __patch_text() directly */ + __patch_text((void *)bpt->bpt_addr, + *(unsigned int *)arch_kgdb_ops.gdb_bpt_instr); return err; } int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt) { - patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr); + /* Machine is already stopped, so we can use __patch_text() directly */ + __patch_text((void *)bpt->bpt_addr, *(unsigned int *)bpt->saved_instr); return 0; } diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 365934f17d74..25bd12ef0b36 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -343,12 +343,17 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig, */ thumb = handler & 1; -#if __LINUX_ARM_ARCH__ >= 7 +#if __LINUX_ARM_ARCH__ >= 6 /* - * Clear the If-Then Thumb-2 execution state - * ARM spec requires this to be all 000s in ARM mode - * Snapdragon S4/Krait misbehaves on a Thumb=>ARM - * signal transition without this. + * Clear the If-Then Thumb-2 execution state. ARM spec + * requires this to be all 000s in ARM mode. Snapdragon + * S4/Krait misbehaves on a Thumb=>ARM signal transition + * without this. + * + * We must do this whenever we are running on a Thumb-2 + * capable CPU, which includes ARMv6T2. However, we elect + * to do this whenever we're on an ARMv6 or later CPU for + * simplicity. */ cpsr &= ~PSR_IT_MASK; #endif diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index f11d82527076..e561aef093c7 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -213,8 +213,6 @@ int __cpu_disable(void) flush_cache_louis(); local_flush_tlb_all(); - clear_tasks_mm_cpumask(cpu); - return 0; } @@ -230,6 +228,9 @@ void __cpu_die(unsigned int cpu) pr_err("CPU%u: cpu didn't die\n", cpu); return; } + + clear_tasks_mm_cpumask(cpu); + pr_notice("CPU%u: shutdown\n", cpu); /* |