Messages in this thread Patch in this message | | | Date | Wed, 04 Nov 2015 10:29:43 -0500 | From | Steven Rostedt <> | Subject | [for-next][PATCH 09/13] tracing: Allow dumping traces without tracking trace started cpus |
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From: Sasha Levin <sasha.levin@oracle.com>
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.
Link: http://lkml.kernel.org/r/1441385156-27279-1-git-send-email-sasha.levin@oracle.com
Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- 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 67873c67665e..6459e141aac3 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) -- 2.6.1
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