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perf session: flush_sample_queue needs to handle errors from handlers
Allows errors to propogate through event processing code and back to commands. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1346005487-62961-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1 changed files with 15 additions and 9 deletions
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@ -692,7 +692,7 @@ static int perf_session_deliver_event(struct perf_session *session,
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struct perf_tool *tool,
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u64 file_offset);
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static void flush_sample_queue(struct perf_session *s,
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static int flush_sample_queue(struct perf_session *s,
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struct perf_tool *tool)
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{
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struct ordered_samples *os = &s->ordered_samples;
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@ -705,7 +705,7 @@ static void flush_sample_queue(struct perf_session *s,
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int ret;
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if (!tool->ordered_samples || !limit)
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return;
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return 0;
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list_for_each_entry_safe(iter, tmp, head, list) {
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if (iter->timestamp > limit)
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@ -715,9 +715,12 @@ static void flush_sample_queue(struct perf_session *s,
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s->header.needs_swap);
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if (ret)
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pr_err("Can't parse sample, err = %d\n", ret);
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else
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perf_session_deliver_event(s, iter->event, &sample, tool,
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iter->file_offset);
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else {
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ret = perf_session_deliver_event(s, iter->event, &sample, tool,
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iter->file_offset);
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if (ret)
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return ret;
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}
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os->last_flush = iter->timestamp;
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list_del(&iter->list);
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@ -737,6 +740,8 @@ static void flush_sample_queue(struct perf_session *s,
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}
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os->nr_samples = 0;
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return 0;
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}
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/*
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@ -782,10 +787,11 @@ static int process_finished_round(struct perf_tool *tool,
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union perf_event *event __used,
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struct perf_session *session)
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{
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flush_sample_queue(session, tool);
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session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
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int ret = flush_sample_queue(session, tool);
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if (!ret)
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session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
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return 0;
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return ret;
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}
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/* The queue is ordered by time */
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@ -1443,7 +1449,7 @@ int __perf_session__process_events(struct perf_session *session,
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err = 0;
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/* do the final flush for ordered samples */
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session->ordered_samples.next_flush = ULLONG_MAX;
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flush_sample_queue(session, tool);
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err = flush_sample_queue(session, tool);
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out_err:
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perf_session__warn_about_errors(session, tool);
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perf_session_free_sample_buffers(session);
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