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    perf evsel: Fix order of event list deletion · bd3bfe9e
    Arnaldo Carvalho de Melo 提交于
    We need to defer calling perf_evsel_list__delete() till after atexit
    registered routines, because we need to traverse the events being
    recorded at that time at least on 'perf record'.
    
    This fixes the problem reported by Thomas Renninger where cmd_record
    called by cmd_timechart would not write the tracing data to the perf.data
    file header because the evsel_list at atexit (control+C on 'perf timechart
    record') time would be empty, being already deleted by run_builtin(),
    and thus 'perf timechart' when trying to process such perf.data file would
    die with:
    
    "no trace data in the file"
    
    Problem introduced in 70d544d0.
    Reported-by: NThomas Renninger <trenn@suse.de>
    Cc: Frederic 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: Thomas Renninger <trenn@suse.de>
    Cc: Tom Zanussi <tzanussi@gmail.com>
    LKML-Reference: <new-submission>
    Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    bd3bfe9e
perf.c 12.0 KB