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authorJiri Olsa <jolsa@kernel.org>2014-10-01 18:00:29 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-10-03 09:39:48 -0300
commit1ca72260e471a8b03f03fe9a6547deb088710042 (patch)
tree5bdcb4f5026ae814071d661611d33dbafeaa1131 /tools/perf
parent0cae013cf4450ea0ecb62241a2f3e7565db09f93 (diff)
downloadlinux-1ca72260e471a8b03f03fe9a6547deb088710042.tar.gz
perf kvm stat live: Use fdarray object instead of pollfd
The reason is that we don't need to count the number of file descriptors because it's already handled in fdarray object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Milian Wolff <mail@milianw.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1412179229-19466-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-kvm.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index dc7d704735bd..460a4ce9c044 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -896,8 +896,7 @@ static int perf_kvm__handle_stdin(void)
static int kvm_events_live_report(struct perf_kvm_stat *kvm)
{
- struct pollfd *pollfds = NULL;
- int nr_fds, nr_stdin, ret, err = -EINVAL;
+ int nr_stdin, ret, err = -EINVAL;
struct termios save;
/* live flag must be set first */
@@ -919,9 +918,6 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);
- /* use pollfds -- need to add timerfd and stdin */
- nr_fds = kvm->evlist->pollfd.nr;
-
/* add timer fd */
if (perf_kvm__timerfd_create(kvm) < 0) {
err = -1;
@@ -931,22 +927,18 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0)
goto out;
- nr_fds++;
-
nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin));
if (nr_stdin < 0)
goto out;
- nr_fds++;
if (fd_set_nonblock(fileno(stdin)) != 0)
goto out;
- pollfds = kvm->evlist->pollfd.entries;
-
/* everything is good - enable the events and process */
perf_evlist__enable(kvm->evlist);
while (!done) {
+ struct fdarray *fda = &kvm->evlist->pollfd;
int rc;
rc = perf_kvm__mmap_read(kvm);
@@ -957,11 +949,11 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
if (err)
goto out;
- if (pollfds[nr_stdin].revents & POLLIN)
+ if (fda->entries[nr_stdin].revents & POLLIN)
done = perf_kvm__handle_stdin();
if (!rc && !done)
- err = poll(pollfds, nr_fds, 100);
+ err = fdarray__poll(fda, 100);
}
perf_evlist__disable(kvm->evlist);