perf/x86/intel/bts: Set event->hw.itrace_started in pmu::start to match the new logic

Since event->hw.itrace_started is now set in pmu::start() to signal the beginning of
the trace, do so also in the intel_bts driver.

Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/1437140050-23363-4-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/x86/kernel/cpu/perf_event_intel_bts.c b/arch/x86/kernel/cpu/perf_event_intel_bts.c
index 54690e885759dd7b89711d3568e8916495e7b34f..d1c0f254afbeefe61fcfaeeb7625664d7d352918 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_intel_bts.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_bts.c
@@ -222,6 +222,7 @@ static void __bts_event_start(struct perf_event *event)
        if (!buf || bts_buffer_is_full(buf, bts))
                return;
 
+       event->hw.itrace_started = 1;
        event->hw.state = 0;
 
        if (!buf->snapshot)