diff options
Diffstat (limited to 'arch/mips/kernel/perf_event_mipsxx.c')
| -rw-r--r-- | arch/mips/kernel/perf_event_mipsxx.c | 78 |
1 files changed, 14 insertions, 64 deletions
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c index 4f2971bcf8e..e3b897acfbc 100644 --- a/arch/mips/kernel/perf_event_mipsxx.c +++ b/arch/mips/kernel/perf_event_mipsxx.c @@ -621,11 +621,6 @@ static int mipspmu_event_init(struct perf_event *event) return -ENODEV; if (!atomic_inc_not_zero(&active_events)) { - if (atomic_read(&active_events) > MIPS_MAX_HWEVENTS) { - atomic_dec(&active_events); - return -ENOSPC; - } - mutex_lock(&pmu_reserve_mutex); if (atomic_read(&active_events) == 0) err = mipspmu_get_irq(); @@ -638,11 +633,7 @@ static int mipspmu_event_init(struct perf_event *event) if (err) return err; - err = __hw_perf_event_init(event); - if (err) - hw_perf_event_destroy(event); - - return err; + return __hw_perf_event_init(event); } static struct pmu pmu = { @@ -712,18 +703,6 @@ static const struct mips_perf_event *mipspmu_map_cache_event(u64 config) } -static int validate_event(struct cpu_hw_events *cpuc, - struct perf_event *event) -{ - struct hw_perf_event fake_hwc = event->hw; - - /* Allow mixed event group. So return 1 to pass validation. */ - if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF) - return 1; - - return mipsxx_pmu_alloc_counter(cpuc, &fake_hwc) >= 0; -} - static int validate_group(struct perf_event *event) { struct perf_event *sibling, *leader = event->group_leader; @@ -731,16 +710,16 @@ static int validate_group(struct perf_event *event) memset(&fake_cpuc, 0, sizeof(fake_cpuc)); - if (!validate_event(&fake_cpuc, leader)) - return -ENOSPC; + if (mipsxx_pmu_alloc_counter(&fake_cpuc, &leader->hw) < 0) + return -EINVAL; list_for_each_entry(sibling, &leader->sibling_list, group_entry) { - if (!validate_event(&fake_cpuc, sibling)) - return -ENOSPC; + if (mipsxx_pmu_alloc_counter(&fake_cpuc, &sibling->hw) < 0) + return -EINVAL; } - if (!validate_event(&fake_cpuc, event)) - return -ENOSPC; + if (mipsxx_pmu_alloc_counter(&fake_cpuc, &event->hw) < 0) + return -EINVAL; return 0; } @@ -1279,13 +1258,14 @@ static int __hw_perf_event_init(struct perf_event *event) } err = 0; - if (event->group_leader != event) { + if (event->group_leader != event) err = validate_group(event); - if (err) - return -EINVAL; - } event->destroy = hw_perf_event_destroy; + + if (err) + event->destroy(event); + return err; } @@ -1380,20 +1360,10 @@ static irqreturn_t mipsxx_pmu_handle_irq(int irq, void *dev) } /* 24K */ -#define IS_UNSUPPORTED_24K_EVENT(r, b) \ - ((b) == 12 || (r) == 151 || (r) == 152 || (b) == 26 || \ - (b) == 27 || (r) == 28 || (r) == 158 || (b) == 31 || \ - (b) == 32 || (b) == 34 || (b) == 36 || (r) == 168 || \ - (r) == 172 || (b) == 47 || ((b) >= 56 && (b) <= 63) || \ - ((b) >= 68 && (b) <= 127)) #define IS_BOTH_COUNTERS_24K_EVENT(b) \ ((b) == 0 || (b) == 1 || (b) == 11) /* 34K */ -#define IS_UNSUPPORTED_34K_EVENT(r, b) \ - ((b) == 12 || (r) == 27 || (r) == 158 || (b) == 36 || \ - (b) == 38 || (r) == 175 || ((b) >= 56 && (b) <= 63) || \ - ((b) >= 68 && (b) <= 127)) #define IS_BOTH_COUNTERS_34K_EVENT(b) \ ((b) == 0 || (b) == 1 || (b) == 11) #ifdef CONFIG_MIPS_MT_SMP @@ -1406,20 +1376,10 @@ static irqreturn_t mipsxx_pmu_handle_irq(int irq, void *dev) #endif /* 74K */ -#define IS_UNSUPPORTED_74K_EVENT(r, b) \ - ((r) == 5 || ((r) >= 135 && (r) <= 137) || \ - ((b) >= 10 && (b) <= 12) || (b) == 22 || (b) == 27 || \ - (b) == 33 || (b) == 34 || ((b) >= 47 && (b) <= 49) || \ - (r) == 178 || (b) == 55 || (b) == 57 || (b) == 60 || \ - (b) == 61 || (r) == 62 || (r) == 191 || \ - ((b) >= 64 && (b) <= 127)) #define IS_BOTH_COUNTERS_74K_EVENT(b) \ ((b) == 0 || (b) == 1) /* 1004K */ -#define IS_UNSUPPORTED_1004K_EVENT(r, b) \ - ((b) == 12 || (r) == 27 || (r) == 158 || (b) == 38 || \ - (r) == 175 || (b) == 63 || ((b) >= 68 && (b) <= 127)) #define IS_BOTH_COUNTERS_1004K_EVENT(b) \ ((b) == 0 || (b) == 1 || (b) == 11) #ifdef CONFIG_MIPS_MT_SMP @@ -1445,11 +1405,10 @@ static const struct mips_perf_event *mipsxx_pmu_map_raw_event(u64 config) unsigned int raw_id = config & 0xff; unsigned int base_id = raw_id & 0x7f; + raw_event.event_id = base_id; + switch (current_cpu_type()) { case CPU_24K: - if (IS_UNSUPPORTED_24K_EVENT(raw_id, base_id)) - return ERR_PTR(-EOPNOTSUPP); - raw_event.event_id = base_id; if (IS_BOTH_COUNTERS_24K_EVENT(base_id)) raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; else @@ -1464,9 +1423,6 @@ static const struct mips_perf_event *mipsxx_pmu_map_raw_event(u64 config) #endif break; case CPU_34K: - if (IS_UNSUPPORTED_34K_EVENT(raw_id, base_id)) - return ERR_PTR(-EOPNOTSUPP); - raw_event.event_id = base_id; if (IS_BOTH_COUNTERS_34K_EVENT(base_id)) raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; else @@ -1482,9 +1438,6 @@ static const struct mips_perf_event *mipsxx_pmu_map_raw_event(u64 config) #endif break; case CPU_74K: - if (IS_UNSUPPORTED_74K_EVENT(raw_id, base_id)) - return ERR_PTR(-EOPNOTSUPP); - raw_event.event_id = base_id; if (IS_BOTH_COUNTERS_74K_EVENT(base_id)) raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; else @@ -1495,9 +1448,6 @@ static const struct mips_perf_event *mipsxx_pmu_map_raw_event(u64 config) #endif break; case CPU_1004K: - if (IS_UNSUPPORTED_1004K_EVENT(raw_id, base_id)) - return ERR_PTR(-EOPNOTSUPP); - raw_event.event_id = base_id; if (IS_BOTH_COUNTERS_1004K_EVENT(base_id)) raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; else |