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| author | Adrian Hunter | 2019-06-10 09:27:53 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2019-06-17 20:57:17 +0200 |
| commit | edff7809c80f09398783d602c33a507309c23e24 (patch) | |
| tree | 478f71ef082e7d6dcb81014bc67b0a654168d720 /tools/perf/util/intel-pt.c | |
| parent | perf: cs-etm: Optimize option setup for CPU-wide sessions (diff) | |
| download | kernel-qcow2-linux-edff7809c80f09398783d602c33a507309c23e24.tar.gz kernel-qcow2-linux-edff7809c80f09398783d602c33a507309c23e24.tar.xz kernel-qcow2-linux-edff7809c80f09398783d602c33a507309c23e24.zip | |
perf intel-pt: Add new packets for PEBS via PT
Add 3 new packets to supports PEBS via PT, namely Block Begin Packet
(BBP), Block Item Packet (BIP) and Block End Packet (BEP). PEBS data is
encoded into multiple BIP packets that come between BBP and BEP. The BEP
packet might be associated with a FUP packet. That is indicated by using
a separate packet type (INTEL_PT_BEP_IP) similar to other packets types
with the _IP suffix.
Refer to the Intel SDM for more information about PEBS via PT:
https://software.intel.com/en-us/articles/intel-sdm
May 2019 version: Vol. 3B 18.5.5.2 PEBS output to Intel® Processor Trace
Decoding of BIP packets conflicts with single-byte TNT packets. Since
BIP packets only occur in the context of a block (i.e. between BBP and
BEP), that context must be recorded and passed to the packet decoder.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190610072803.10456-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/intel-pt.c')
| -rw-r--r-- | tools/perf/util/intel-pt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 8ed51f4e9e30..893cef494a43 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -177,13 +177,14 @@ static void intel_pt_dump(struct intel_pt *pt __maybe_unused, int ret, pkt_len, i; char desc[INTEL_PT_PKT_DESC_MAX]; const char *color = PERF_COLOR_BLUE; + enum intel_pt_pkt_ctx ctx = INTEL_PT_NO_CTX; color_fprintf(stdout, color, ". ... Intel Processor Trace data: size %zu bytes\n", len); while (len) { - ret = intel_pt_get_packet(buf, len, &packet); + ret = intel_pt_get_packet(buf, len, &packet, &ctx); if (ret > 0) pkt_len = ret; else |