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author | Adrian Hunter <adrian.hunter@intel.com> | 2020-06-02 14:25:05 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-02 11:05:37 -0300 |
commit | 0affd0e5262b6d40f5f63466d88933e99698e240 (patch) | |
tree | 26d2d8d65737de6f93d54b683976b764b6ce4663 /tools/perf/util/annotate.c | |
parent | 3b1f47d6e7d3ce7116c5698accaf936b46c29e3b (diff) | |
download | linux-stable-0affd0e5262b6d40f5f63466d88933e99698e240.tar.gz linux-stable-0affd0e5262b6d40f5f63466d88933e99698e240.tar.bz2 linux-stable-0affd0e5262b6d40f5f63466d88933e99698e240.zip |
perf symbols: Fix kernel maps for kcore and eBPF
Adjust 'map->pgoff' also when moving a map's start address.
Example with v5.4.34 based kernel:
Before:
$ sudo tools/perf/perf record -a --kcore -e intel_pt//k sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.958 MB perf.data ]
$ sudo tools/perf/perf script --itrace=e >/dev/null
Warning:
961 instruction trace errors
After:
$ sudo tools/perf/perf script --itrace=e >/dev/null
$
Committer testing:
# uname -a
Linux seventh 5.6.10-100.fc30.x86_64 #1 SMP Mon May 4 15:36:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
#
Before:
# perf record -a --kcore -e intel_pt//k sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.923 MB perf.data ]
# perf script --itrace=e >/dev/null
Warning:
295 instruction trace errors
#
After:
# perf record -a --kcore -e intel_pt//k sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.919 MB perf.data ]
# perf script --itrace=e >/dev/null
#
Fixes: fb5a88d4131a ("perf tools: Preserve eBPF maps when loading kcore")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200602112505.1406-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/annotate.c')
0 files changed, 0 insertions, 0 deletions