hi, we managed to trigger perf WARN (described in patch 2), but only on AMD system with 48 CPUs.
I believe the reason is a race in throttling code and I tried to fix it. So far my testing looks ok, but I suspect I broke something else.. ;-) thanks for comments, jirka Signed-off-by: Jiri Olsa <[email protected]> Cc: Corey Ashford <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Stephane Eranian <[email protected]> --- arch/x86/kernel/cpu/perf_event_intel.c | 4 +++- include/linux/perf_event.h | 2 +- kernel/events/core.c | 67 +++++++++++++++++++++++++++++++++++++++---------------------------- 3 files changed, 43 insertions(+), 30 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
