[PATCH 0/5] perf core: Support overwrite ring buffer

From	Wang Nan <wangnan0@huawei.com>
Newsgroups	linux.kernel
Subject	[PATCH 0/5] perf core: Support overwrite ring buffer
Date	2016-03-14 11:10 +0100
Message-ID	<rcxBM-2ly-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View raw

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-wangnan0@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 <hekuang@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
-- 
1.8.3.4

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH 0/5] perf core: Support overwrite ring buffer Wang Nan <wangnan0@huawei.com> - 2016-03-14 11:10 +0100

csiph-web