From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx> The man page of tracefs_cpu_stop() states that if it returns 0 that it guaranteed to wake up a reader. Well, that doesn't appear to always be the case. Return 1 until we can figure it out. Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> --- src/tracefs-record.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/src/tracefs-record.c b/src/tracefs-record.c index f998883134b8..9baec6780974 100644 --- a/src/tracefs-record.c +++ b/src/tracefs-record.c @@ -429,15 +429,11 @@ int tracefs_cpu_stop(struct tracefs_cpu *tcpu) return ret; /* Calling ioctl() on recent kernels will wake up the waiters */ - ret = ioctl(tcpu->fd, 0); - if (ret < 0) - ret = 1; - else - ret = 0; + ioctl(tcpu->fd, 0); set_nonblock(tcpu); - return ret; + return 1; } /** -- 2.35.1
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