diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2018-08-27 11:12:27 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-08-30 14:49:23 -0300 |
| commit | 969558371bf926258241727ebb994f516f2e6f61 (patch) | |
| tree | 7471dca1cfa209eb41989054b121ce940d8b92b5 /kernel/events/core.c | |
| parent | cb45302d7c5e20f0c0598cdbd7753fa44daceb2a (diff) | |
perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint
Currently we enable the breakpoint back only if the breakpoint
modification was successful. If it fails we can leave the breakpoint in
disabled state with attr->disabled == 0.
We can safely enable the breakpoint back for both the fail and success
paths by checking the bp->attr.disabled, which either holds the new
'requested' disabled state or the original breakpoint state.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Milind Chabbi <chabbi.milind@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180827091228.2878-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/events/core.c')
0 files changed, 0 insertions, 0 deletions