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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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63e0c7715a
The current perf code implicitly assumes SAMPLE_RAW means tracepoints are being used, but doesn't check for that. It happily records the TRACE_INFO even if SAMPLE_RAW is used without tracepoints, but when the perf data is read it won't go any further when it finds TRACE_INFO but no tracepoints, and displays misleading errors. This adds a check for both in perf-record, and won't record TRACE_INFO unless both are true. This at least allows perf report -D to dump raw events, and avoids triggering a misleading error condition in perf trace. It doesn't actually enable the non-tracepoint raw events to be displayed in perf trace, since perf trace currently only deals with tracepoint events. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1272865861.7932.16.camel@tropicana> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
38 lines
927 B
C
38 lines
927 B
C
#ifndef __PERF_PARSE_EVENTS_H
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#define __PERF_PARSE_EVENTS_H
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/*
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* Parse symbolic events/counts passed in as options:
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*/
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struct option;
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struct tracepoint_path {
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char *system;
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char *name;
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struct tracepoint_path *next;
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};
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extern struct tracepoint_path *tracepoint_id_to_path(u64 config);
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extern bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events);
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extern int nr_counters;
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extern struct perf_event_attr attrs[MAX_COUNTERS];
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extern char *filters[MAX_COUNTERS];
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extern const char *event_name(int ctr);
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extern const char *__event_name(int type, u64 config);
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extern int parse_events(const struct option *opt, const char *str, int unset);
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extern int parse_filter(const struct option *opt, const char *str, int unset);
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#define EVENTS_HELP_MAX (128*1024)
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extern void print_events(void);
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extern char debugfs_path[];
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extern int valid_debugfs_mount(const char *debugfs);
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#endif /* __PERF_PARSE_EVENTS_H */
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