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| author | Leo Yan | 2018-05-10 06:01:59 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2018-05-11 15:45:23 +0200 |
| commit | 46d53620044f7b574c0f3216f8b4f2ce3559ce31 (patch) | |
| tree | 2d46f5e59edf875cfb85ea103f5cc09e393bc057 /mm/dmapool.c | |
| parent | perf annotate: Display all available events on --stdio (diff) | |
| download | kernel-qcow2-linux-46d53620044f7b574c0f3216f8b4f2ce3559ce31.tar.gz kernel-qcow2-linux-46d53620044f7b574c0f3216f8b4f2ce3559ce31.tar.xz kernel-qcow2-linux-46d53620044f7b574c0f3216f8b4f2ce3559ce31.zip | |
perf cs-etm: Support unknown_thread in cs_etm_auxtrace
CoreSight doesn't allocate thread structure for unknown_thread in ETM
auxtrace, so unknown_thread is NULL pointer. If the perf data doesn't
contain valid tid and then cs_etm__mem_access() uses unknown_thread
instead as thread handler, this results in a segmentation fault when
thread__find_addr_map() accesses the thread handler.
This commit creates a new thread data which is used by unknown_thread, so
CoreSight tracing can roll back to use unknown_thread if perf data
doesn't include valid thread info. This commit also releases thread
data for initialization failure case and for normal auxtrace free flow.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1525924920-4381-1-git-send-email-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'mm/dmapool.c')
0 files changed, 0 insertions, 0 deletions