Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kernel / cpu / perf_event_intel_ds.c

diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c
index 18018d1311cdf3fa7f550b2fd7894c278505afe6..4977f9c400e5738cb668efc937c69cde22a2772d 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_intel_ds.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c
@@ -214,7 +214,7 @@ static void intel_pmu_disable_bts(void)
        update_debugctlmsr(debugctlmsr);
 }
 
-static void intel_pmu_drain_bts_buffer(void)
+static int intel_pmu_drain_bts_buffer(void)
 {
        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
        struct debug_store *ds = cpuc->ds;
@@ -231,16 +231,16 @@ static void intel_pmu_drain_bts_buffer(void)
        struct pt_regs regs;
 
        if (!event)
-               return;
+               return 0;
 
        if (!ds)
-               return;
+               return 0;
 
        at  = (struct bts_record *)(unsigned long)ds->bts_buffer_base;
        top = (struct bts_record *)(unsigned long)ds->bts_index;
 
        if (top <= at)
-               return;
+               return 0;
 
        ds->bts_index = ds->bts_buffer_base;
 
@@ -256,7 +256,7 @@ static void intel_pmu_drain_bts_buffer(void)
        perf_prepare_sample(&header, &data, event, &regs);
 
        if (perf_output_begin(&handle, event, header.size * (top - at), 1, 1))
-               return;
+               return 1;
 
        for (; at < top; at++) {
                data.ip         = at->from;
@@ -270,6 +270,7 @@ static void intel_pmu_drain_bts_buffer(void)
        /* There's new data available. */
        event->hw.interrupts++;
        event->pending_kill = POLL_IN;
+       return 1;
 }
 
 /*
@@ -491,7 +492,7 @@ static void __intel_pmu_pebs_event(struct perf_event *event,
                regs.flags &= ~PERF_EFLAGS_EXACT;
 
        if (perf_event_overflow(event, 1, &data, &regs))
-               x86_pmu_stop(event);
+               x86_pmu_stop(event, 0);
 }
 
 static void intel_pmu_drain_pebs_core(struct pt_regs *iregs)