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Message-Id: <1441385156-27279-1-git-send-email-sasha.levin@oracle.com> Date: Fri, 4 Sep 2015 12:45:56 -0400 From: Sasha Levin <sasha.levin@...cle.com> To: rostedt@...dmis.org, mingo@...hat.com Cc: linux-kernel@...r.kernel.org, Sasha Levin <sasha.levin@...cle.com> Subject: [PATCH] ftrace: allow dumping traces without tracking trace started cpus We don't init iter->started when dumping the ftrace buffer, and there's no real need to do so - so allow skipping that check if the iter doesn't have an initialized ->started cpumask. Signed-off-by: Sasha Levin <sasha.levin@...cle.com> --- kernel/trace/trace.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 6e79408..0dc647f 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2671,13 +2671,14 @@ static void test_cpu_buff_start(struct trace_iterator *iter) if (!(iter->iter_flags & TRACE_FILE_ANNOTATE)) return; - if (cpumask_test_cpu(iter->cpu, iter->started)) + if (iter->started && cpumask_test_cpu(iter->cpu, iter->started)) return; if (per_cpu_ptr(iter->trace_buffer->data, iter->cpu)->skipped_entries) return; - cpumask_set_cpu(iter->cpu, iter->started); + if (iter->started) + cpumask_set_cpu(iter->cpu, iter->started); /* Don't print started cpu buffer for the first entry of the trace */ if (iter->idx > 1) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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