Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 2/5] perf tool: Initialize events IDs in a single function | Date | Fri, 18 Nov 2011 14:46:42 +0100 |
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Currently events' IDs initialization is scattered among the code. Adding function 'perf_evlist__init_ids' to allocate and retrive events' IDs in one place.
Signed-off-by: Jiri Olsa <jolsa@redhat.com> --- tools/perf/util/evlist.c | 50 +++++++++++++++++++++++++++++---------------- 1 files changed, 32 insertions(+), 18 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index fbb4b4a..0f715d0 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -326,10 +326,6 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) goto out_unmap; } - - if ((evsel->attr.read_format & PERF_FORMAT_ID) && - perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) - goto out_unmap; } } } @@ -366,10 +362,6 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, in if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) goto out_unmap; } - - if ((evsel->attr.read_format & PERF_FORMAT_ID) && - perf_evlist__id_add_fd(evlist, evsel, 0, thread, fd) < 0) - goto out_unmap; } } @@ -385,6 +377,33 @@ out_unmap: return -1; } +static int perf_evlist__init_ids(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel; + struct thread_map *threads = evlist->threads; + struct cpu_map *cpus = evlist->cpus; + int cpu, thread; + + list_for_each_entry(evsel, &evlist->entries, node) { + if (!(evsel->attr.read_format & PERF_FORMAT_ID)) + continue; + + if ((!evsel->sample_id) && + perf_evsel__alloc_id(evsel, cpus->nr, threads->nr) < 0) + return -ENOMEM; + + for (cpu = 0; cpu < cpus->nr; cpu++) + for (thread = 0; thread < threads->nr; thread++) { + int fd = FD(evsel, cpu, thread); + if (perf_evlist__id_add_fd(evlist, evsel, + cpu, thread, fd)) + return -EINVAL; + } + } + + return 0; +} + /** perf_evlist__mmap - Create per cpu maps to receive events * * @evlist - list of events @@ -403,10 +422,8 @@ out_unmap: int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite) { unsigned int page_size = sysconf(_SC_PAGE_SIZE); - int mask = pages * page_size - 1; - struct perf_evsel *evsel; + int mask = pages * page_size - 1, ret; const struct cpu_map *cpus = evlist->cpus; - const struct thread_map *threads = evlist->threads; int prot = PROT_READ | (overwrite ? 0 : PROT_WRITE); if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) @@ -418,14 +435,11 @@ int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite) evlist->overwrite = overwrite; evlist->mmap_len = (pages + 1) * page_size; - list_for_each_entry(evsel, &evlist->entries, node) { - if ((evsel->attr.read_format & PERF_FORMAT_ID) && - evsel->sample_id == NULL && - perf_evsel__alloc_id(evsel, cpus->nr, threads->nr) < 0) - return -ENOMEM; - } + ret = perf_evlist__init_ids(evlist); + if (ret) + return ret; - if (evlist->cpus->map[0] == -1) + if (cpus->map[0] == -1) return perf_evlist__mmap_per_thread(evlist, prot, mask); return perf_evlist__mmap_per_cpu(evlist, prot, mask); -- 1.7.4
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