Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753639Ab2HCOE0 (ORCPT ); Fri, 3 Aug 2012 10:04:26 -0400 Received: from casper.infradead.org ([85.118.1.10]:45784 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752245Ab2HCOBY (ORCPT ); Fri, 3 Aug 2012 10:01:24 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, David Ahern , Frederic Weisbecker , Jiri Olsa , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 17/18] perf kvm top: Limit guest kernel info message to once Date: Fri, 3 Aug 2012 11:01:09 -0300 Message-Id: <1344002470-5965-18-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.7.9.2.358.g22243 In-Reply-To: <1344002470-5965-1-git-send-email-acme@infradead.org> References: <1344002470-5965-1-git-send-email-acme@infradead.org> Content-Type: text/plain; charset="UTF-8" X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1795 Lines: 59 From: David Ahern 'perf kvm top' shows a continual flurry of: Can't find guest [5201]'s kernel information if it can't find the guest info and with a lot of VMs running a user has no chance of reading them all. Limit message to once per guest. Signed-off-by: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1343709095-7089-5-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 13 +++++++++++-- 1 files changed, 11 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 3409627..68cd61e 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -38,6 +38,7 @@ #include "util/cpumap.h" #include "util/xyarray.h" #include "util/sort.h" +#include "util/intlist.h" #include "util/debug.h" @@ -706,8 +707,16 @@ static void perf_event__process_sample(struct perf_tool *tool, int err; if (!machine && perf_guest) { - pr_err("Can't find guest [%d]'s kernel information\n", - event->ip.pid); + static struct intlist *seen; + + if (!seen) + seen = intlist__new(); + + if (!intlist__has_entry(seen, event->ip.pid)) { + pr_err("Can't find guest [%d]'s kernel information\n", + event->ip.pid); + intlist__add(seen, event->ip.pid); + } return; } -- 1.7.1 -- 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/