diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/entry-header.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/kgdb.c | 13 | ||||
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 5 | ||||
| -rw-r--r-- | arch/arm/kernel/smp.c | 4 |
4 files changed, 21 insertions, 3 deletions
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 7e9ed1eea40a..d93f976fb389 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -102,6 +102,8 @@ .else ldmdb sp, {r0 - lr}^ @ get calling r0 - lr .endif + mov r0, r0 @ ARMv5T and earlier require a nop + @ after ldm {}^ add sp, sp, #S_FRAME_SIZE - S_PC movs pc, lr @ return & move spsr_svc into cpsr .endm diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c index ba8ccfede964..a5b846b9895d 100644 --- a/arch/arm/kernel/kgdb.c +++ b/arch/arm/kernel/kgdb.c @@ -9,6 +9,7 @@ * Authors: George Davis <davis_g@mvista.com> * Deepak Saxena <dsaxena@plexity.net> */ +#include <linux/irq.h> #include <linux/kgdb.h> #include <asm/traps.h> @@ -158,6 +159,18 @@ static struct undef_hook kgdb_compiled_brkpt_hook = { .fn = kgdb_compiled_brk_fn }; +static void kgdb_call_nmi_hook(void *ignored) +{ + kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs()); +} + +void kgdb_roundup_cpus(unsigned long flags) +{ + local_irq_enable(); + smp_call_function(kgdb_call_nmi_hook, NULL, 0); + local_irq_disable(); +} + /** * kgdb_arch_init - Perform any architecture specific initalization. * diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 3875d99cc40f..9e70f2053f9a 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -332,7 +332,8 @@ armpmu_reserve_hardware(void) for (i = 0; i < pmu_irqs->num_irqs; ++i) { err = request_irq(pmu_irqs->irqs[i], armpmu->handle_irq, - IRQF_DISABLED, "armpmu", NULL); + IRQF_DISABLED | IRQF_NOBALANCING, + "armpmu", NULL); if (err) { pr_warning("unable to request IRQ%d for ARM " "perf counters\n", pmu_irqs->irqs[i]); @@ -1624,7 +1625,7 @@ enum armv7_counters { /* * EVTSEL: Event selection reg */ -#define ARMV7_EVTSEL_MASK 0x7f /* Mask for writable bits */ +#define ARMV7_EVTSEL_MASK 0xff /* Mask for writable bits */ /* * SELECT: Counter selection reg diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 57162af53dc9..577543f3857f 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -99,6 +99,7 @@ int __cpuinit __cpu_up(unsigned int cpu) *pmd = __pmd((PHYS_OFFSET & PGDIR_MASK) | PMD_TYPE_SECT | PMD_SECT_AP_WRITE); flush_pmd_entry(pmd); + outer_clean_range(__pa(pmd), __pa(pmd + 1)); /* * We need to tell the secondary core where to find @@ -106,7 +107,8 @@ int __cpuinit __cpu_up(unsigned int cpu) */ secondary_data.stack = task_stack_page(idle) + THREAD_START_SP; secondary_data.pgdir = virt_to_phys(pgd); - wmb(); + __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data)); + outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1)); /* * Now bring the CPU into our world. |