Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753117AbaJAQB2 (ORCPT ); Wed, 1 Oct 2014 12:01:28 -0400 Received: from mx1.redhat.com ([209.132.183.28]:19657 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753058AbaJAQBZ (ORCPT ); Wed, 1 Oct 2014 12:01:25 -0400 From: Jiri Olsa To: linux-kernel@vger.kernel.org Cc: Jiri Olsa , Adrian Hunter , Arnaldo Carvalho de Melo , Corey Ashford , David Ahern , Frederic Weisbecker , Ingo Molnar , Milian Wolff , Namhyung Kim , Paul Mackerras , Peter Zijlstra Subject: [PATCH 5/5] perf kvm stat live: Use fdarray object instead pollfd Date: Wed, 1 Oct 2014 18:00:29 +0200 Message-Id: <1412179229-19466-5-git-send-email-jolsa@kernel.org> In-Reply-To: <1412179229-19466-1-git-send-email-jolsa@kernel.org> References: <1412179229-19466-1-git-send-email-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The reason is that we don't need to count the number of file descriptors because it's already handled in fdarray object. Cc: Adrian Hunter Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Signed-off-by: Jiri Olsa --- tools/perf/builtin-kvm.c | 16 ++++------------ 1 file 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); -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/