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libperf: Add perf_evlist__id_add() function

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Add the perf_evlist__id_add() function to libperf as an internal
function.  We already have the 'heads' member in 'struct perf_evlist'.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lore.kernel.org/lkml/20190913132355.21634-31-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2019-09-03 11:01:04 +02:00
committed by Arnaldo Carvalho de Melo
parent ff47d86a0d
commit b0031c2281
6 changed files with 34 additions and 26 deletions
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26
tools/perf/lib/evlist.c
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@@ -1,9 +1,12 @@
// SPDX-License-Identifier: GPL-2.0
#include <perf/evlist.h>
#include <perf/evsel.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/hash.h>
#include <internal/evlist.h>
#include <internal/evsel.h>
#include <internal/xyarray.h>
#include <linux/zalloc.h>
#include <stdlib.h>
#include <perf/cpumap.h>
@@ -168,3 +171,26 @@ u64 perf_evlist__read_format(struct perf_evlist *evlist)
return first->attr.read_format;
}
#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
static void perf_evlist__id_hash(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int cpu, int thread, u64 id)
{
int hash;
struct perf_sample_id *sid = SID(evsel, cpu, thread);
sid->id = id;
sid->evsel = evsel;
hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS);
hlist_add_head(&sid->node, &evlist->heads[hash]);
}
void perf_evlist__id_add(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int cpu, int thread, u64 id)
{
perf_evlist__id_hash(evlist, evsel, cpu, thread, id);
evsel->id[evsel->ids++] = id;
}

4
tools/perf/lib/include/internal/evlist.h
View File

@@ -68,4 +68,8 @@ static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
u64 perf_evlist__read_format(struct perf_evlist *evlist);
void perf_evlist__id_add(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int cpu, int thread, u64 id);
#endif /* __LIBPERF_INTERNAL_EVLIST_H */