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Diffstat (limited to 'arch/arm/kernel/perf_event.c')
-rw-r--r--arch/arm/kernel/perf_event.c131
1 files changed, 38 insertions, 93 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 07a50357492a..c49e1701a2f6 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -84,14 +84,17 @@ struct arm_pmu {
irqreturn_t (*handle_irq)(int irq_num, void *dev);
void (*enable)(struct hw_perf_event *evt, int idx);
void (*disable)(struct hw_perf_event *evt, int idx);
- int (*event_map)(int evt);
- u64 (*raw_event)(u64);
int (*get_event_idx)(struct cpu_hw_events *cpuc,
struct hw_perf_event *hwc);
u32 (*read_counter)(int idx);
void (*write_counter)(int idx, u32 val);
void (*start)(void);
void (*stop)(void);
+ const unsigned (*cache_map)[PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX];
+ const unsigned (*event_map)[PERF_COUNT_HW_MAX];
+ u32 raw_event_mask;
int num_events;
u64 max_period;
};
@@ -136,10 +139,6 @@ EXPORT_SYMBOL_GPL(perf_num_counters);
#define CACHE_OP_UNSUPPORTED 0xFFFF
-static unsigned armpmu_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
- [PERF_COUNT_HW_CACHE_OP_MAX]
- [PERF_COUNT_HW_CACHE_RESULT_MAX];
-
static int
armpmu_map_cache_event(u64 config)
{
@@ -157,7 +156,7 @@ armpmu_map_cache_event(u64 config)
if (cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX)
return -EINVAL;
- ret = (int)armpmu_perf_cache_map[cache_type][cache_op][cache_result];
+ ret = (int)(*armpmu->cache_map)[cache_type][cache_op][cache_result];
if (ret == CACHE_OP_UNSUPPORTED)
return -ENOENT;
@@ -166,6 +165,19 @@ armpmu_map_cache_event(u64 config)
}
static int
+armpmu_map_event(u64 config)
+{
+ int mapping = (*armpmu->event_map)[config];
+ return mapping == HW_OP_UNSUPPORTED ? -EOPNOTSUPP : mapping;
+}
+
+static int
+armpmu_map_raw_event(u64 config)
+{
+ return (int)(config & armpmu->raw_event_mask);
+}
+
+static int
armpmu_event_set_period(struct perf_event *event,
struct hw_perf_event *hwc,
int idx)
@@ -458,11 +470,11 @@ __hw_perf_event_init(struct perf_event *event)
/* Decode the generic type into an ARM event identifier. */
if (PERF_TYPE_HARDWARE == event->attr.type) {
- mapping = armpmu->event_map(event->attr.config);
+ mapping = armpmu_map_event(event->attr.config);
} else if (PERF_TYPE_HW_CACHE == event->attr.type) {
mapping = armpmu_map_cache_event(event->attr.config);
} else if (PERF_TYPE_RAW == event->attr.type) {
- mapping = armpmu->raw_event(event->attr.config);
+ mapping = armpmu_map_raw_event(event->attr.config);
} else {
pr_debug("event type %x not supported\n", event->attr.type);
return -EOPNOTSUPP;
@@ -1121,30 +1133,6 @@ armv6pmu_stop(void)
spin_unlock_irqrestore(&pmu_lock, flags);
}
-static inline int
-armv6pmu_event_map(int config)
-{
- int mapping = armv6_perf_map[config];
- if (HW_OP_UNSUPPORTED == mapping)
- mapping = -EOPNOTSUPP;
- return mapping;
-}
-
-static inline int
-armv6mpcore_pmu_event_map(int config)
-{
- int mapping = armv6mpcore_perf_map[config];
- if (HW_OP_UNSUPPORTED == mapping)
- mapping = -EOPNOTSUPP;
- return mapping;
-}
-
-static u64
-armv6pmu_raw_event(u64 config)
-{
- return config & 0xff;
-}
-
static int
armv6pmu_get_event_idx(struct cpu_hw_events *cpuc,
struct hw_perf_event *event)
@@ -1240,13 +1228,14 @@ static const struct arm_pmu armv6pmu = {
.handle_irq = armv6pmu_handle_irq,
.enable = armv6pmu_enable_event,
.disable = armv6pmu_disable_event,
- .event_map = armv6pmu_event_map,
- .raw_event = armv6pmu_raw_event,
.read_counter = armv6pmu_read_counter,
.write_counter = armv6pmu_write_counter,
.get_event_idx = armv6pmu_get_event_idx,
.start = armv6pmu_start,
.stop = armv6pmu_stop,
+ .cache_map = &armv6_perf_cache_map,
+ .event_map = &armv6_perf_map,
+ .raw_event_mask = 0xFF,
.num_events = 3,
.max_period = (1LLU << 32) - 1,
};
@@ -1263,13 +1252,14 @@ static const struct arm_pmu armv6mpcore_pmu = {
.handle_irq = armv6pmu_handle_irq,
.enable = armv6pmu_enable_event,
.disable = armv6mpcore_pmu_disable_event,
- .event_map = armv6mpcore_pmu_event_map,
- .raw_event = armv6pmu_raw_event,
.read_counter = armv6pmu_read_counter,
.write_counter = armv6pmu_write_counter,
.get_event_idx = armv6pmu_get_event_idx,
.start = armv6pmu_start,
.stop = armv6pmu_stop,
+ .cache_map = &armv6mpcore_perf_cache_map,
+ .event_map = &armv6mpcore_perf_map,
+ .raw_event_mask = 0xFF,
.num_events = 3,
.max_period = (1LLU << 32) - 1,
};
@@ -2093,27 +2083,6 @@ static void armv7pmu_stop(void)
spin_unlock_irqrestore(&pmu_lock, flags);
}
-static inline int armv7_a8_pmu_event_map(int config)
-{
- int mapping = armv7_a8_perf_map[config];
- if (HW_OP_UNSUPPORTED == mapping)
- mapping = -EOPNOTSUPP;
- return mapping;
-}
-
-static inline int armv7_a9_pmu_event_map(int config)
-{
- int mapping = armv7_a9_perf_map[config];
- if (HW_OP_UNSUPPORTED == mapping)
- mapping = -EOPNOTSUPP;
- return mapping;
-}
-
-static u64 armv7pmu_raw_event(u64 config)
-{
- return config & 0xff;
-}
-
static int armv7pmu_get_event_idx(struct cpu_hw_events *cpuc,
struct hw_perf_event *event)
{
@@ -2144,12 +2113,12 @@ static struct arm_pmu armv7pmu = {
.handle_irq = armv7pmu_handle_irq,
.enable = armv7pmu_enable_event,
.disable = armv7pmu_disable_event,
- .raw_event = armv7pmu_raw_event,
.read_counter = armv7pmu_read_counter,
.write_counter = armv7pmu_write_counter,
.get_event_idx = armv7pmu_get_event_idx,
.start = armv7pmu_start,
.stop = armv7pmu_stop,
+ .raw_event_mask = 0xFF,
.max_period = (1LLU << 32) - 1,
};
@@ -2318,21 +2287,6 @@ static const unsigned xscale_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
#define XSCALE_PMU_RESET (CCNT_RESET | PMN_RESET)
#define XSCALE_PMU_CNT64 0x008
-static inline int
-xscalepmu_event_map(int config)
-{
- int mapping = xscale_perf_map[config];
- if (HW_OP_UNSUPPORTED == mapping)
- mapping = -EOPNOTSUPP;
- return mapping;
-}
-
-static u64
-xscalepmu_raw_event(u64 config)
-{
- return config & 0xff;
-}
-
#define XSCALE1_OVERFLOWED_MASK 0x700
#define XSCALE1_CCOUNT_OVERFLOW 0x400
#define XSCALE1_COUNT0_OVERFLOW 0x100
@@ -2598,13 +2552,14 @@ static const struct arm_pmu xscale1pmu = {
.handle_irq = xscale1pmu_handle_irq,
.enable = xscale1pmu_enable_event,
.disable = xscale1pmu_disable_event,
- .event_map = xscalepmu_event_map,
- .raw_event = xscalepmu_raw_event,
.read_counter = xscale1pmu_read_counter,
.write_counter = xscale1pmu_write_counter,
.get_event_idx = xscale1pmu_get_event_idx,
.start = xscale1pmu_start,
.stop = xscale1pmu_stop,
+ .cache_map = &xscale_perf_cache_map,
+ .event_map = &xscale_perf_map,
+ .raw_event_mask = 0xFF,
.num_events = 3,
.max_period = (1LLU << 32) - 1,
};
@@ -2953,13 +2908,14 @@ static const struct arm_pmu xscale2pmu = {
.handle_irq = xscale2pmu_handle_irq,
.enable = xscale2pmu_enable_event,
.disable = xscale2pmu_disable_event,
- .event_map = xscalepmu_event_map,
- .raw_event = xscalepmu_raw_event,
.read_counter = xscale2pmu_read_counter,
.write_counter = xscale2pmu_write_counter,
.get_event_idx = xscale2pmu_get_event_idx,
.start = xscale2pmu_start,
.stop = xscale2pmu_stop,
+ .cache_map = &xscale_perf_cache_map,
+ .event_map = &xscale_perf_map,
+ .raw_event_mask = 0xFF,
.num_events = 5,
.max_period = (1LLU << 32) - 1,
};
@@ -2978,20 +2934,14 @@ init_hw_perf_events(void)
case 0xB560: /* ARM1156 */
case 0xB760: /* ARM1176 */
armpmu = &armv6pmu;
- memcpy(armpmu_perf_cache_map, armv6_perf_cache_map,
- sizeof(armv6_perf_cache_map));
break;
case 0xB020: /* ARM11mpcore */
armpmu = &armv6mpcore_pmu;
- memcpy(armpmu_perf_cache_map,
- armv6mpcore_perf_cache_map,
- sizeof(armv6mpcore_perf_cache_map));
break;
case 0xC080: /* Cortex-A8 */
armv7pmu.id = ARM_PERF_PMU_ID_CA8;
- memcpy(armpmu_perf_cache_map, armv7_a8_perf_cache_map,
- sizeof(armv7_a8_perf_cache_map));
- armv7pmu.event_map = armv7_a8_pmu_event_map;
+ armv7pmu.cache_map = &armv7_a8_perf_cache_map;
+ armv7pmu.event_map = &armv7_a8_perf_map;
armpmu = &armv7pmu;
/* Reset PMNC and read the nb of CNTx counters
@@ -3000,9 +2950,8 @@ init_hw_perf_events(void)
break;
case 0xC090: /* Cortex-A9 */
armv7pmu.id = ARM_PERF_PMU_ID_CA9;
- memcpy(armpmu_perf_cache_map, armv7_a9_perf_cache_map,
- sizeof(armv7_a9_perf_cache_map));
- armv7pmu.event_map = armv7_a9_pmu_event_map;
+ armv7pmu.cache_map = &armv7_a9_perf_cache_map;
+ armv7pmu.event_map = &armv7_a9_perf_map;
armpmu = &armv7pmu;
/* Reset PMNC and read the nb of CNTx counters
@@ -3016,13 +2965,9 @@ init_hw_perf_events(void)
switch (part_number) {
case 1:
armpmu = &xscale1pmu;
- memcpy(armpmu_perf_cache_map, xscale_perf_cache_map,
- sizeof(xscale_perf_cache_map));
break;
case 2:
armpmu = &xscale2pmu;
- memcpy(armpmu_perf_cache_map, xscale_perf_cache_map,
- sizeof(xscale_perf_cache_map));
break;
}
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-21 19:18:19 +0200