]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
perf top: Check the latency of perf_top__mmap_read()
authorKan Liang <kan.liang@intel.com>
Thu, 18 Jan 2018 21:26:32 +0000 (13:26 -0800)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 15 Feb 2018 12:57:06 +0000 (09:57 -0300)
commit8cc42de736b617827a4e7664fb8d7a325bc125bc
treeec87fc8ed11507410243aea4c604e2efa32440bf
parentebebbf082357f86cc84a4d46ce897a5750e41b7a
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>
tools/perf/builtin-top.c