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authorArnaldo Carvalho de Melo <[email protected]>2020-03-02 11:23:03 -0300
committerArnaldo Carvalho de Melo <[email protected]>2020-03-02 11:23:03 -0300
commitebcb9464a2ae3a547e97de476575c82ece0e93e2 (patch)
treedc434255f86483e86cb6675d7a37759bccf7b4b7 /tools/perf/scripts/python/Perf-Trace-Util/lib
parentcff20b3151ccab690715cb6cf0f5da5cccb32adf (diff)
perf env: Do not return pointers to local variables
It is possible to return a pointer to a local variable when looking up the architecture name for the running system and no normalization is done on that value, i.e. we may end up returning the uts.machine local variable. While this doesn't happen on most arches, as normalization takes place, lets fix this by making that a static variable and optimize it a bit by not always running uname(), only the first time. Noticed in fedora rawhide running with: [perfbuilder@a5ff49d6e6e4 ~]$ gcc --version gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8) Reported-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Namhyung Kim <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib')
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