diff options
Diffstat (limited to 'arch/arm/kernel/perf_event_v7.c')
| -rw-r--r-- | arch/arm/kernel/perf_event_v7.c | 54 |
1 files changed, 6 insertions, 48 deletions
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index 2924d7910b10..a3322e2b3ea4 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -773,10 +773,10 @@ static inline void armv7pmu_write_counter(struct perf_event *event, u64 value) pr_err("CPU%u writing wrong counter %d\n", smp_processor_id(), idx); } else if (idx == ARMV7_IDX_CYCLE_COUNTER) { - asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" (value)); + asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" ((u32)value)); } else { armv7_pmnc_select_counter(idx); - asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" (value)); + asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" ((u32)value)); } } @@ -870,10 +870,8 @@ static void armv7_pmnc_dump_regs(struct arm_pmu *cpu_pmu) static void armv7pmu_enable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); int idx = hwc->idx; if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { @@ -886,7 +884,6 @@ static void armv7pmu_enable_event(struct perf_event *event) * Enable counter and interrupt, and set the counter to count * the event that we're interested in. */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* * Disable counter @@ -910,16 +907,12 @@ static void armv7pmu_enable_event(struct perf_event *event) * Enable counter */ armv7_pmnc_enable_counter(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void armv7pmu_disable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); int idx = hwc->idx; if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { @@ -931,7 +924,6 @@ static void armv7pmu_disable_event(struct perf_event *event) /* * Disable counter and interrupt */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* * Disable counter @@ -942,8 +934,6 @@ static void armv7pmu_disable_event(struct perf_event *event) * Disable interrupt for this counter */ armv7_pmnc_disable_intens(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static irqreturn_t armv7pmu_handle_irq(struct arm_pmu *cpu_pmu) @@ -1009,24 +999,14 @@ static irqreturn_t armv7pmu_handle_irq(struct arm_pmu *cpu_pmu) static void armv7pmu_start(struct arm_pmu *cpu_pmu) { - unsigned long flags; - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); - - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Enable all counters */ armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E); - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void armv7pmu_stop(struct arm_pmu *cpu_pmu) { - unsigned long flags; - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); - - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Disable all counters */ armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E); - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc, @@ -1072,8 +1052,10 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event, { unsigned long config_base = 0; - if (attr->exclude_idle) - return -EPERM; + if (attr->exclude_idle) { + pr_debug("ARM performance counters do not support mode exclusion\n"); + return -EOPNOTSUPP; + } if (attr->exclude_user) config_base |= ARMV7_EXCLUDE_USER; if (attr->exclude_kernel) @@ -1492,14 +1474,10 @@ static void krait_clearpmu(u32 config_base) static void krait_pmu_disable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); /* Disable counter and interrupt */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Disable counter */ armv7_pmnc_disable_counter(idx); @@ -1512,23 +1490,17 @@ static void krait_pmu_disable_event(struct perf_event *event) /* Disable interrupt for this counter */ armv7_pmnc_disable_intens(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void krait_pmu_enable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); /* * Enable counter and interrupt, and set the counter to count * the event that we're interested in. */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Disable counter */ armv7_pmnc_disable_counter(idx); @@ -1548,8 +1520,6 @@ static void krait_pmu_enable_event(struct perf_event *event) /* Enable counter */ armv7_pmnc_enable_counter(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void krait_pmu_reset(void *info) @@ -1825,14 +1795,10 @@ static void scorpion_clearpmu(u32 config_base) static void scorpion_pmu_disable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); /* Disable counter and interrupt */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Disable counter */ armv7_pmnc_disable_counter(idx); @@ -1845,23 +1811,17 @@ static void scorpion_pmu_disable_event(struct perf_event *event) /* Disable interrupt for this counter */ armv7_pmnc_disable_intens(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void scorpion_pmu_enable_event(struct perf_event *event) { - unsigned long flags; struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); - struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); /* * Enable counter and interrupt, and set the counter to count * the event that we're interested in. */ - raw_spin_lock_irqsave(&events->pmu_lock, flags); /* Disable counter */ armv7_pmnc_disable_counter(idx); @@ -1881,8 +1841,6 @@ static void scorpion_pmu_enable_event(struct perf_event *event) /* Enable counter */ armv7_pmnc_enable_counter(idx); - - raw_spin_unlock_irqrestore(&events->pmu_lock, flags); } static void scorpion_pmu_reset(void *info) |