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perf evlist: Factor out duplicated mmap code 

The same code is used in perf_evlist__mmap_per_cpu() and
perf_evlist__mmap_per_thread().

Factor it out into a separate function perf_evlist__mmap_per_evsel().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1382099356-4918-17-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2013-10-18 15:29:13 +03:00 committed by Arnaldo Carvalho de Melo
parent c83fa7f254
commit 04e213148c
1 changed files with 36 additions and 37 deletions
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73
tools/perf/util/evlist.c
View File

@ -608,9 +608,36 @@ static int __perf_evlist__mmap(struct perf_evlist *evlist,
return 0;
}
static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int mask)
static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx,
int prot, int mask, int cpu, int thread,
int *output)
{
struct perf_evsel *evsel;
list_for_each_entry(evsel, &evlist->entries, node) {
int fd = FD(evsel, cpu, thread);
if (*output == -1) {
*output = fd;
if (__perf_evlist__mmap(evlist, idx, prot, mask,
*output) < 0)
return -1;
} else {
if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, *output) != 0)
return -1;
}
if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0)
return -1;
}
return 0;
}
static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot,
int mask)
{
int cpu, thread;
int nr_cpus = cpu_map__nr(evlist->cpus);
int nr_threads = thread_map__nr(evlist->threads);
@ -620,23 +647,9 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m
int output = -1;
for (thread = 0; thread < nr_threads; thread++) {
list_for_each_entry(evsel, &evlist->entries, node) {
int fd = FD(evsel, cpu, thread);
if (output == -1) {
output = fd;
if (__perf_evlist__mmap(evlist, cpu,
prot, mask, output) < 0)
goto out_unmap;
} else {
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;
}
if (perf_evlist__mmap_per_evsel(evlist, cpu, prot, mask,
cpu, thread, &output))
goto out_unmap;
}
}
@ -648,9 +661,9 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m
return -1;
}
static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, int mask)
static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot,
int mask)
{
struct perf_evsel *evsel;
int thread;
int nr_threads = thread_map__nr(evlist->threads);
@ -658,23 +671,9 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, in
for (thread = 0; thread < nr_threads; thread++) {
int output = -1;
list_for_each_entry(evsel, &evlist->entries, node) {
int fd = FD(evsel, 0, thread);
if (output == -1) {
output = fd;
if (__perf_evlist__mmap(evlist, thread,
prot, mask, output) < 0)
goto out_unmap;
} else {
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;
}
if (perf_evlist__mmap_per_evsel(evlist, thread, prot, mask, 0,
thread, &output))
goto out_unmap;
}
return 0;