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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-03-04 22:29:39 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-06 13:10:45 -0300
commit3d3b5e95997208067c963923db90ed1517565d14 (patch)
treebd48dc7bd13bd8532c795064a1aa1c74ce74d587 /tools/perf
parent60098917c06d154d06ce030c125266eab9e60768 (diff)
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perf evlist: Split perf_evlist__id_hash
The previous situation was to receive an fd from where to read the event ID. Spin off a routine for when we have the ID handy, not having to read it from some fd. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/evlist.c28
-rw-r--r--tools/perf/util/evlist.h3
2 files changed, 21 insertions, 10 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 030ae7f05e0..190c64c6e26 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -106,12 +106,24 @@ void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd)
evlist->nr_fds++;
}
-static int perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel,
- int cpu, int thread, int fd)
+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]);
+}
+
+static int perf_evlist__id_hash_fd(struct perf_evlist *evlist,
+ struct perf_evsel *evsel,
+ int cpu, int thread, int fd)
{
- struct perf_sample_id *sid;
u64 read_data[4] = { 0, };
- int hash, id_idx = 1; /* The first entry is the counter value */
+ int id_idx = 1; /* The first entry is the counter value */
if (!(evsel->attr.read_format & PERF_FORMAT_ID) ||
read(fd, &read_data, sizeof(read_data)) == -1)
@@ -122,11 +134,7 @@ static int perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *e
if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
++id_idx;
- sid = SID(evsel, cpu, thread);
- sid->id = read_data[id_idx];
- sid->evsel = evsel;
- hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS);
- hlist_add_head(&sid->node, &evlist->heads[hash]);
+ perf_evlist__id_hash(evlist, evsel, cpu, thread, read_data[id_idx]);
return 0;
}
@@ -300,7 +308,7 @@ int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite)
goto out_unmap;
if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
- perf_evlist__id_hash(evlist, evsel, cpu, thread, fd) < 0)
+ perf_evlist__id_hash_fd(evlist, evsel, cpu, thread, fd) < 0)
goto out_unmap;
}
}
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index b75805aeb7e..078d5125608 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -38,6 +38,9 @@ void perf_evlist__delete(struct perf_evlist *evlist);
void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
int perf_evlist__add_default(struct perf_evlist *evlist);
+void perf_evlist__id_hash(struct perf_evlist *evlist, struct perf_evsel *evsel,
+ int cpu, int thread, u64 id);
+
int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);