perf/x86: Install platform specific ->swap_task_ctx() adapter

Bridge perf core and x86 swap_task_ctx() method calls.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/b157e97d-32c3-aeaf-13ba-47350c677906@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 7b21455..6e3f0c1 100644 (file)
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -2243,6 +2243,13 @@ static void x86_pmu_sched_task(struct perf_event_context *ctx, bool sched_in)
                x86_pmu.sched_task(ctx, sched_in);
 }
 
+static void x86_pmu_swap_task_ctx(struct perf_event_context *prev,
+                                 struct perf_event_context *next)
+{
+       if (x86_pmu.swap_task_ctx)
+               x86_pmu.swap_task_ctx(prev, next);
+}
+
 void perf_check_microcode(void)
 {
        if (x86_pmu.check_microcode)
@@ -2297,6 +2304,7 @@ static struct pmu pmu = {
        .event_idx              = x86_pmu_event_idx,
        .sched_task             = x86_pmu_sched_task,
        .task_ctx_size          = sizeof(struct x86_perf_task_context),
+       .swap_task_ctx          = x86_pmu_swap_task_ctx,
        .check_period           = x86_pmu_check_period,
 
        .aux_output_match       = x86_pmu_aux_output_match,