mirror of https://gitee.com/openkylin/linux.git
aa58e9afb6
Track freed memory as well as allocations and show the net in the summary. Committer notes: Testing it: # perf kmem record usleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 1.626 MB perf.data (4208 samples) ] [root@jouet ~]# perf kmem stat --slab SUMMARY (SLAB allocator) ======================== Total bytes requested: 234,011 Total bytes allocated: 234,504 Total bytes freed: 213,328 <------ Net total bytes allocated: 21,176 Total bytes wasted on internal fragmentation: 493 Internal fragmentation: 0.210231% Cross CPU allocations: 4/1,963 # Signed-off-by: David Ahern <dsahern@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1480110133-37039-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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