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authorKan Liang <kan.liang@intel.com>2018-01-18 13:26:32 -0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-02-15 09:57:06 -0300
commit8cc42de736b617827a4e7664fb8d7a325bc125bc (patch)
treeec87fc8ed11507410243aea4c604e2efa32440bf /samples
parentebebbf082357f86cc84a4d46ce897a5750e41b7a (diff)
downloadlinux-8cc42de736b617827a4e7664fb8d7a325bc125bc.tar.bz2
perf top: Check the latency of perf_top__mmap_read()
The latency of perf_top__mmap_read() should be lower than refresh time. If not, give some hints to reduce the latency. Signed-off-by: Kan Liang <kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1516310792-208685-18-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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