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Commit 09ff6071 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
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perf tools: Add perf_pmu__format_bits() 



Add perf_pmu__format_bits() to get the format bits for a PMU config
term.  Intel PT will use this to validate terms and to record format
bits to enable later interpreting the config from the attribute stored
in the perf.data file.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-15-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 8bd1b2d2

tools/perf/util/pmu.c

+16 −1
Original line number Diff line number Diff line
@@ -542,7 +542,7 @@ struct perf_pmu *perf_pmu__find(const char *name) 
}



static struct perf_pmu_format *

pmu_find_format(struct list_head *formats, char *name)

pmu_find_format(struct list_head *formats, const char *name)

{

	struct perf_pmu_format *format;
@@ -553,6 +553,21 @@ pmu_find_format(struct list_head *formats, char *name) 
	return NULL;

}



__u64 perf_pmu__format_bits(struct list_head *formats, const char *name)

{

	struct perf_pmu_format *format = pmu_find_format(formats, name);

	__u64 bits = 0;

	int fbit;



	if (!format)

		return 0;



	for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS)

		bits |= 1ULL << fbit;



	return bits;

}



/*

 * Sets value based on the format definition (format parameter)

 * and unformated value (value parameter).

tools/perf/util/pmu.h

+1 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ int perf_pmu__config_terms(struct list_head *formats, 
			   struct perf_event_attr *attr,

			   struct list_head *head_terms,

			   bool zero, struct parse_events_error *error);

__u64 perf_pmu__format_bits(struct list_head *formats, const char *name);

int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,

			  struct perf_pmu_info *info);

struct list_head *perf_pmu__alias(struct perf_pmu *pmu,