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authorAdrian Hunter <adrian.hunter@intel.com>2017-06-21 13:17:19 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-06-27 18:03:09 +0300
commit1405720d4f2669e5ebaed192bd727aca74f64732 (patch)
tree4a456ee00f46ffc7847764c3945ca6a96a016d19 /tools/perf/util/event.h
parentd5b1a5f660b8594125ea2a372286d767e756102f (diff)
downloadlinux-1405720d4f2669e5ebaed192bd727aca74f64732.tar.xz
perf script: Add 'synth' event type for synthesized events
Instruction trace decoders such as Intel PT may have additional information recorded in the trace. For example, Intel PT has power information and a there is a new instruction 'ptwrite' that can write a value into a PTWRITE trace packet. Such information may be associated with an IP and so can be treated as a sample (PERF_RECORD_SAMPLE). Custom data can be incorporated in the sample as raw_data (PERF_SAMPLE_RAW). However a means of identifying the raw data format is needed. That will be done by synthesizing an attribute for it. So add an attribute type for custom synthesized events. Different synthesized events will be identified by the attribute 'config'. Committer notes: Start those PERF_TYPE_ after the PMU range, i.e. after (INT_MAX + 1U), i.e. after perf_pmu_register() -> idr_alloc(end=0). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1498040239-32418-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/event.h')
-rw-r--r--tools/perf/util/event.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 7c3fa1c8cbcd..855733c2adcf 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -252,6 +252,9 @@ enum auxtrace_error_type {
PERF_AUXTRACE_ERROR_MAX
};
+/* Attribute type for custom synthesized events */
+#define PERF_TYPE_SYNTH (INT_MAX + 1U)
+
/*
* The kernel collects the number of events it couldn't send in a stretch and
* when possible sends this number in a PERF_RECORD_LOST event. The number of