diff options
| author | Kan Liang <kan.liang@intel.com> | 2018-01-18 13:26:28 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-02-15 09:56:14 -0300 |
| commit | 204721d7eabe6ee98aafce791ce3efdbc4715834 (patch) | |
| tree | 3ccd81207b51196891ee646a3fcd6186ada2a6a7 /virt/kvm/eventfd.c | |
| parent | 9a831b3a32c5daf5d7cc672334d51930f78e4ea3 (diff) | |
perf top: Add overwrite fall back
Switch to non-overwrite mode if kernel doesnot support overwrite
ringbuffer.
It's only effect when overwrite mode is supported. No change to current
behavior.
Signed-off-by: Kan Liang <kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1516310792-208685-14-git-send-email-kan.liang@intel.com
[ Use perf_missing_features.write_backward instead of the non merged is_write_backward_fail() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'virt/kvm/eventfd.c')
0 files changed, 0 insertions, 0 deletions