Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752098AbdFZPMt (ORCPT ); Mon, 26 Jun 2017 11:12:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49200 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751752AbdFZPL5 (ORCPT ); Mon, 26 Jun 2017 11:11:57 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com C00FD87649 Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=bristot@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com C00FD87649 From: Daniel Bristot de Oliveira To: linux-rt-users Cc: "Luis Claudio R . Goncalves" , Clark Williams , Luiz Capitulino , Sebastian Andrzej Siewior , Thomas Gleixner , Steven Rostedt , Peter Zijlstra , Ingo Molnar , LKML Subject: [PATCH V2 1/2] sched/debug: Inform the number of rt/dl task that can migrate Date: Mon, 26 Jun 2017 17:07:14 +0200 Message-Id: <7896f71cada54ee7dd8507bb666063a2e051c3d4.1498482127.git.bristot@redhat.com> In-Reply-To: References: X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Mon, 26 Jun 2017 15:11:42 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2427 Lines: 82 Add the value of the rt_rq.rt_nr_migratory and dl_rq.dl_nr_migratory to the sched_debug output, for instance: rt_rq[0]: .rt_nr_running : 2 .rt_nr_migratory : 1 <--- Like this .rt_throttled : 0 .rt_time : 828.645877 .rt_runtime : 1000.000000 This is useful to debug problems related to the dl/rt schedulers. This also fixes the format of some variables, that were unsigned, rather than signed. Signed-off-by: Daniel Bristot de Oliveira Cc: Luis Claudio R. Goncalves Cc: Clark Williams Cc: Luiz Capitulino Cc: Sebastian Andrzej Siewior Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Peter Zijlstra Cc: Ingo Molnar Cc: LKML Cc: linux-rt-users --- kernel/sched/debug.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 0e2af53..287615a 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -552,15 +552,21 @@ void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq) #define P(x) \ SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x)) +#define PU(x) \ + SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(rt_rq->x)) #define PN(x) \ SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x)) - P(rt_nr_running); + PU(rt_nr_running); +#ifdef CONFIG_SMP + PU(rt_nr_migratory); +#endif P(rt_throttled); PN(rt_time); PN(rt_runtime); #undef PN +#undef PU #undef P } @@ -569,14 +575,21 @@ void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq) struct dl_bw *dl_bw; SEQ_printf(m, "\ndl_rq[%d]:\n", cpu); - SEQ_printf(m, " .%-30s: %ld\n", "dl_nr_running", dl_rq->dl_nr_running); + +#define PU(x) \ + SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(dl_rq->x)) + + PU(dl_nr_running); #ifdef CONFIG_SMP + PU(dl_nr_migratory); dl_bw = &cpu_rq(cpu)->rd->dl_bw; #else dl_bw = &dl_rq->dl_bw; #endif SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->bw", dl_bw->bw); SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->total_bw", dl_bw->total_bw); + +#undef PU } extern __read_mostly int sched_clock_running; -- 2.9.4