• S
    perf tools: Add the ability to specify list of cpus to monitor · c45c6ea2
    Stephane Eranian 提交于
    This patch adds a -C option to stat, record, top to designate a list of CPUs to
    monitor. CPUs can be specified as a comma-separated list or ranges, no space
    allowed.
    
    Examples:
    $ perf record -a -C0-1,4-7 sleep 1
    $ perf top -C0-4
    $ perf stat -a -C1,2,3,4 sleep 1
    
    With perf record in per-thread mode with inherit mode on, samples are collected
    only when the thread runs on the designated CPUs.
    
    The -C option does not turn on system-wide mode automatically.
    
    Cc: David S. Miller <davem@davemloft.net>
    Cc: Frédéric Weisbecker <fweisbec@gmail.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Tom Zanussi <tzanussi@gmail.com>
    LKML-Reference: <4bff9496.d345d80a.41fe.7b00@mx.google.com>
    Signed-off-by: NStephane Eranian <eranian@google.com>
    Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    c45c6ea2
perf-top.txt 2.3 KB