• Frederic Weisbecker's avatar
    perf: Make the trace events sample period default to 1 · f9212819
    Frederic Weisbecker authored
    Trace events are mostly used for tracing and then require not to
    be lost when possible. As opposite to hardware events that really
    require to trigger after a given sample period, trace events mostly
    need to trigger everytime.
    
    It is a frustrating experience to trace with perf and realize we
    lost a lot of events because we forgot the "-c 1" option.
    
    Then default sample_period to 1 for trace events but let the user
    override it.
    Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    f9212819
builtin-record.c 18.9 KB