mirror of https://gitee.com/openkylin/linux.git
perf intel-pt: Adjust overlap-checking to support sampling mode
Adjust overlap-checking to support sampling mode. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -230,6 +230,7 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
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struct auxtrace_buffer *buffer = ptq->buffer;
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struct auxtrace_buffer *old_buffer = ptq->old_buffer;
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struct auxtrace_queue *queue;
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bool might_overlap;
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if (ptq->stop) {
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b->len = 0;
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@ -256,7 +257,8 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
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return -ENOMEM;
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}
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if (ptq->pt->snapshot_mode && !buffer->consecutive && old_buffer &&
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might_overlap = ptq->pt->snapshot_mode || ptq->pt->sampling_mode;
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if (might_overlap && !buffer->consecutive && old_buffer &&
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intel_pt_do_fix_overlap(ptq->pt, old_buffer, buffer))
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return -ENOMEM;
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@ -269,8 +271,7 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
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}
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b->ref_timestamp = buffer->reference;
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if (!old_buffer || ptq->pt->sampling_mode || (ptq->pt->snapshot_mode &&
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!buffer->consecutive)) {
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if (!old_buffer || (might_overlap && !buffer->consecutive)) {
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b->consecutive = false;
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b->trace_nr = buffer->buffer_nr + 1;
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} else {
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