Commit bcfbe5c4 authored by Kan Liang's avatar Kan Liang Committed by Ingo Molnar

perf/x86: Introduce a ->read() callback in 'struct x86_pmu'

Auto-reload needs to be specially handled when reading event counts.
Signed-off-by: default avatarKan Liang <>
Signed-off-by: default avatarPeter Zijlstra (Intel) <>
Cc: Alexander Shishkin <>
Cc: Arnaldo Carvalho de Melo <>
Cc: Jiri Olsa <>
Cc: Linus Torvalds <>
Cc: Peter Zijlstra <>
Cc: Stephane Eranian <>
Cc: Thomas Gleixner <>
Cc: Vince Weaver <>
Link: Ingo Molnar's avatarIngo Molnar <>
parent d31fc13f
......@@ -1881,6 +1881,8 @@ early_initcall(init_hw_perf_events);
static inline void x86_pmu_read(struct perf_event *event)
if (
......@@ -520,6 +520,7 @@ struct x86_pmu {
void (*disable)(struct perf_event *);
void (*add)(struct perf_event *);
void (*del)(struct perf_event *);
void (*read)(struct perf_event *event);
int (*hw_config)(struct perf_event *event);
int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
unsigned eventsel;
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment