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Subject[PATCH 38/54] perf intel-pt: Adjust overlap-checking to support sampling mode
Date
From: Adrian Hunter <adrian.hunter@intel.com>

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>
---
tools/perf/util/intel-pt.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 5c5c155fba78..0effaff57020 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -230,6 +230,7 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
struct auxtrace_buffer *buffer = ptq->buffer;
struct auxtrace_buffer *old_buffer = ptq->old_buffer;
struct auxtrace_queue *queue;
+ bool might_overlap;

if (ptq->stop) {
b->len = 0;
@@ -256,7 +257,8 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
return -ENOMEM;
}

- if (ptq->pt->snapshot_mode && !buffer->consecutive && old_buffer &&
+ might_overlap = ptq->pt->snapshot_mode || ptq->pt->sampling_mode;
+ if (might_overlap && !buffer->consecutive && old_buffer &&
intel_pt_do_fix_overlap(ptq->pt, old_buffer, buffer))
return -ENOMEM;

@@ -269,8 +271,7 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
}
b->ref_timestamp = buffer->reference;

- if (!old_buffer || ptq->pt->sampling_mode || (ptq->pt->snapshot_mode &&
- !buffer->consecutive)) {
+ if (!old_buffer || (might_overlap && !buffer->consecutive)) {
b->consecutive = false;
b->trace_nr = buffer->buffer_nr + 1;
} else {
--
2.14.3
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