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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2019-02-15 13:56:54 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-02-22 16:52:07 -0300
commit18736eef12137c59f60cc9f56dc5bea05c92e0eb (patch)
tree7cb645bed3ffa39d58aae60d5a1d8b2a73584228 /arch/x86/events/intel/pt.c
parentcd358012ba20d4193c225d89cd1d0c11bc54b1bc (diff)
perf: Copy parent's address filter offsets on clone
When a child event is allocated in the inherit_event() path, the VMA based filter offsets are not copied from the parent, even though the address space mapping of the new task remains the same, which leads to no trace for the new task until exec. Reported-by: Mansour Alharthi <malharthi9@gatech.edu> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Olsa <jolsa@redhat.com> Fixes: 375637bc5249 ("perf/core: Introduce address range filtering") Link: http://lkml.kernel.org/r/20190215115655.63469-2-alexander.shishkin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'arch/x86/events/intel/pt.c')
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