• Arnaldo Carvalho de Melo's avatar
    perf record: Fix eternal wait for stillborn child · 18483b81
    Arnaldo Carvalho de Melo authored
    When execvp fails to find the specified command on the path we won't get
    SIGCHLD, so send a SIGUSR1 and exit right away.
    
    Current situation would require a SIGINT performed by the user and would
    produce meaningless summary.
    
    Now:
    
    [acme@emilia linux]$ ./foo
    -bash: ./foo: No such file or directory
    [acme@emilia linux]$ perf record ./foo
    ./foo: No such file or directory
    [acme@emilia linux]$
    Acked-by: default avatarThomas Gleixner <tglx@linutronix.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: Tom Zanussi <tzanussi@gmail.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    LKML-Reference: <new-submission>
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    18483b81
builtin-record.c 22.2 KB