Previous patch set at [1] has a problem when using hw_breakpoints on ARM and ARM64. This new version fix that by introducing is_default_overflow_handler() to replace all '!overflow_handler' checking.
[1] http://lkml.kernel.org/g/1457322619-170254-1-git-send-email-wangn...@huawei.com Wang Nan (5): perf core: Introduce new ioctl options to pause and resume ring buffer perf core: Set event's default overflow_handler perf core: Prepare writing into ring buffer from end perf core: Add backward attribute to perf event perf core: Reduce perf event output overhead by new overflow handler arch/arm/kernel/hw_breakpoint.c | 4 +-- arch/arm64/kernel/hw_breakpoint.c | 4 +-- include/linux/perf_event.h | 32 +++++++++++++++-- include/uapi/linux/perf_event.h | 4 ++- kernel/events/core.c | 73 +++++++++++++++++++++++++++++++++------ kernel/events/internal.h | 11 ++++++ kernel/events/ring_buffer.c | 63 +++++++++++++++++++++++++++++---- 7 files changed, 167 insertions(+), 24 deletions(-) Cc: He Kuang <heku...@huawei.com> Cc: Alexei Starovoitov <a...@kernel.org> Cc: Arnaldo Carvalho de Melo <a...@redhat.com> Cc: Brendan Gregg <brendan.d.gr...@gmail.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu...@hitachi.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Zefan Li <lize...@huawei.com> Cc: pi3or...@163.com -- 1.8.3.4
