• Hitoshi Mitake's avatar
    perf lock: Drop "-a" option from cmd_record() default arguments set · 76ba7e84
    Hitoshi Mitake authored
    This patch drops "-a" from the default arguments passed to
    perf record by perf lock.
    
    If a user wants to do a system wide record of lock events,
            perf lock record -a <program> <argument> ...
    is enough for this purpose.
    
    This can reduce the size of the perf.data file.
    
    % sudo ./perf lock record whoami
    root
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.439 MB perf.data (~19170 samples) ]
    % sudo ./perf lock record -a whoami   # with -a option
    root
    [ perf record: Woken up 0 times to write data ]
    [ perf record: Captured and wrote 48.962 MB perf.data (~2139197 samples) ]
    Signed-off-by: default avatarHitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Jens Axboe <jens.axboe@oracle.com>
    Cc: Jason Baron <jbaron@redhat.com>
    Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
    LKML-Reference: Message-Id: <1273306229-5216-1-git-send-email-mitake@dcl.info.waseda.ac.jp>
    Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
    76ba7e84
builtin-lock.c 22.7 KB