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authorNicholas Fraser2021-02-19 11:09:32 -0500
committerArnaldo Carvalho de Melo2021-03-06 16:54:31 -0300
commitec4d0a7680c793ef68d47507fcec245019ee6f33 (patch)
treee2c3cd012eeb7f9d85335ef97dafdfc86f63e319 /Documentation/admin-guide/mono.rst
parentbd57a9f33abc0adede5bafa06b2f1af3de03190d (diff)
perf archive: Fix filtering of empty build-ids
A non-existent build-id used to be treated as all-zero SHA-1 hash. Build-ids are now variable width. A non-existent build-id is an empty string and "perf buildid-list" pads this with spaces. This is true even when using old perf.data files recorded from older versions of perf; "perf buildid-list" never reports an all-zero hash anymore. This fixes "perf-archive" to skip missing build-ids by skipping lines that start with a padding space rather than with zeroes. Signed-off-by: Nicholas Fraser <nfraser@codeweavers.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Huw Davies <huw@codeweavers.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ulrich Czekalla <uczekalla@codeweavers.com> Link: https://lore.kernel.org/r/442bffc7-ac5c-0975-b876-a549efce2413@codeweavers.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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