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arm64: perf: fix event number mask

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This patch fixes ARMV8_EVTYPE_* macros since evtCount (event number)
field width is 10bits in event selection register.

Signed-off-by: Vinayak Kale <vkale@apm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Vinayak Kale 2013-10-18 13:59:06 +01:00 committed by Catalin Marinas
parent a872013d6d
commit c019de3de6
1 changed files with 4 additions and 3 deletions
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7
arch/arm64/kernel/perf_event.c
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@ -784,8 +784,8 @@ static const unsigned armv8_pmuv3_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
/*
* PMXEVTYPER: Event selection reg
*/
#define ARMV8_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */
#define ARMV8_EVTYPE_EVENT 0xff /* Mask for EVENT bits */
#define ARMV8_EVTYPE_MASK 0xc80003ff /* Mask for writable bits */
#define ARMV8_EVTYPE_EVENT 0x3ff /* Mask for EVENT bits */
/*
* Event filters for PMUv3
@ -1175,7 +1175,8 @@ static void armv8pmu_reset(void *info)
static int armv8_pmuv3_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv8_pmuv3_perf_map,
&armv8_pmuv3_perf_cache_map, 0xFF);
&armv8_pmuv3_perf_cache_map,
ARMV8_EVTYPE_EVENT);
}
static struct arm_pmu armv8pmu = {