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authorSuzuki K Poulose <suzuki.poulose@arm.com>2018-07-10 09:57:59 +0100
committerWill Deacon <will.deacon@arm.com>2018-07-10 18:19:02 +0100
commit3a95200d3f89afd8b67f39d88d36cc7ec96ce385 (patch)
treeceb9428b912eedf3731f71b7a2d7014f57473e4f /include/linux/perf
parent8d3e994241e6bcc7ead2b918c4f15b7683afa90a (diff)
arm_pmu: Change API to support 64bit counter values
Convert the {read/write}_counter APIs to handle 64bit values to enable supporting chained event counters. The backends still use 32bit values and we pass them 32bit values only. So in effect there are no functional changes. Cc: Will Deacon <will.deacon@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Julien Thierry <julien.thierry@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include/linux/perf')
-rw-r--r--include/linux/perf/arm_pmu.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 12c30a22fc8d..f7126a21df30 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -87,8 +87,8 @@ struct arm_pmu {
struct perf_event *event);
int (*set_event_filter)(struct hw_perf_event *evt,
struct perf_event_attr *attr);
- u32 (*read_counter)(struct perf_event *event);
- void (*write_counter)(struct perf_event *event, u32 val);
+ u64 (*read_counter)(struct perf_event *event);
+ void (*write_counter)(struct perf_event *event, u64 val);
void (*start)(struct arm_pmu *);
void (*stop)(struct arm_pmu *);
void (*reset)(void *);