perf/live-mode: Handle payload-less events
Some events, such as the PERF_RECORD_FINISHED_ROUND event consist of only an event header and no data. In this case, a 0-length payload will be read, and the 0 return value will be wrongly interpreted as an 'unexpected end of event stream'. This patch allows for proper handling of data-less events by skipping 0-length reads. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <1273038527.6383.51.camel@tropicana> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Showing
Please register or sign in to comment