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perf callchain: Remove unnecessary validation
Now that the sample parsing correctly checks data sizes there is no reason for it to be done again for callchains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3 changed files with 0 additions and 33 deletions
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@ -21,14 +21,6 @@
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__thread struct callchain_cursor callchain_cursor;
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bool ip_callchain__valid(struct ip_callchain *chain,
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const union perf_event *event)
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{
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unsigned int chain_size = event->header.size;
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chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
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return chain->nr * sizeof(u64) <= chain_size;
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}
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#define chain_for_each_child(child, parent) \
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list_for_each_entry(child, &parent->children, siblings)
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@ -109,11 +109,6 @@ int callchain_append(struct callchain_root *root,
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int callchain_merge(struct callchain_cursor *cursor,
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struct callchain_root *dst, struct callchain_root *src);
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struct ip_callchain;
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union perf_event;
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bool ip_callchain__valid(struct ip_callchain *chain,
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const union perf_event *event);
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/*
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* Initialize a cursor before adding entries inside, but keep
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* the previously allocated entries as a cache.
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@ -997,22 +997,6 @@ static int perf_session_deliver_event(struct perf_session *session,
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}
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}
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static int perf_session__preprocess_sample(struct perf_session *session,
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union perf_event *event, struct perf_sample *sample)
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{
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if (event->header.type != PERF_RECORD_SAMPLE ||
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!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
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return 0;
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if (!ip_callchain__valid(sample->callchain, event)) {
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pr_debug("call-chain problem with event, skipping it.\n");
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++session->stats.nr_invalid_chains;
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session->stats.total_invalid_chains += sample->period;
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return -EINVAL;
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}
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return 0;
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}
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static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
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struct perf_tool *tool, u64 file_offset)
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{
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@ -1075,10 +1059,6 @@ static int perf_session__process_event(struct perf_session *session,
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if (ret)
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return ret;
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/* Preprocess sample records - precheck callchains */
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if (perf_session__preprocess_sample(session, event, &sample))
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return 0;
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if (tool->ordered_samples) {
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ret = perf_session_queue_event(session, event, &sample,
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file_offset);
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