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ARM: perf: refactor event mapping

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Currently mapping an event type to a hardware configuration value
depends on the data being pointed to from struct arm_pmu. These fields
(cache_map, event_map, raw_event_mask) are currently specific to CPU
PMUs, and do not serve the general case well.

This patch replaces the event map pointers on struct arm_pmu with a new
'map_event' function pointer. Small shim functions are used to reuse
the existing common code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Mark Rutland
2011-04-28 15:47:10 +01:00
committed by Will Deacon
parent 7ae18a5717
commit e1f431b57e
4 changed files with 87 additions and 52 deletions
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arch/arm/kernel/perf_event_v6.c
+15 -6
View File
@@ -657,6 +657,12 @@ armv6mpcore_pmu_disable_event(struct hw_perf_event *hwc,
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static int armv6_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv6_perf_map,
&armv6_perf_cache_map, 0xFF);
}
static struct arm_pmu armv6pmu = {
.id = ARM_PERF_PMU_ID_V6,
.name = "v6",
@@ -668,9 +674,7 @@ static struct arm_pmu armv6pmu = {
.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,
.map_event = armv6_map_event,
.num_events = 3,
.max_period = (1LLU << 32) - 1,
};
@@ -687,6 +691,13 @@ static struct arm_pmu *__init armv6pmu_init(void)
* disable the interrupt reporting and update the event. When unthrottling we
* reset the period and enable the interrupt reporting.
*/
static int armv6mpcore_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv6mpcore_perf_map,
&armv6mpcore_perf_cache_map, 0xFF);
}
static struct arm_pmu armv6mpcore_pmu = {
.id = ARM_PERF_PMU_ID_V6MP,
.name = "v6mpcore",
@@ -698,9 +709,7 @@ static struct arm_pmu armv6mpcore_pmu = {
.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,
.map_event = armv6mpcore_map_event,
.num_events = 3,
.max_period = (1LLU << 32) - 1,
};