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| author | Leo Yan <leo.yan@linaro.org> | 2019-08-15 11:28:54 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-20 18:20:52 +0300 |
| commit | a4973d8f7bea98a0795ba853e7bd2cef11363824 (patch) | |
| tree | 58a84bf7cd8311361f790dd3c51211e742b4f922 /tools/perf/ui/tui | |
| parent | 10ccbc1cc0b8a05a5c8491630d36d1e2672036c1 (diff) | |
| download | linux-a4973d8f7bea98a0795ba853e7bd2cef11363824.tar.xz | |
perf cs-etm: Support sample flags 'insn' and 'insnlen'
The synthetic branch and instruction samples are missed to set
instruction related info, thus the perf tool fails to display samples
with flags '-F,+insn,+insnlen'.
The CoreSight trace decoder provides sufficient information to decide
the instruction size based on the ISA type: A64/A32 instructions are
32-bit size, but one exception is the T32 instruction size, which might
be 32-bit or 16-bit.
This patch handles these cases and it reads the instruction values from
DSO file; thus can support the flags '-F,+insn,+insnlen'.
Before:
# perf script -F,insn,insnlen,ip,sym
0 [unknown] ilen: 0
ffff97174044 _start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
ffff97174938 _dl_start ilen: 0
[...]
After:
# perf script -F,insn,insnlen,ip,sym
0 [unknown] ilen: 0
ffff97174044 _start ilen: 4 insn: 2f 02 00 94
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
[...]
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Robert Walker <robert.walker@arm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190815082854.18191-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/ui/tui')
0 files changed, 0 insertions, 0 deletions