From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753169AbcGSHJU (ORCPT ); Tue, 19 Jul 2016 03:09:20 -0400 Received: from terminus.zytor.com ([198.137.202.10]:45278 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752938AbcGSHJN (ORCPT ); Tue, 19 Jul 2016 03:09:13 -0400 Date: Tue, 19 Jul 2016 00:07:59 -0700 From: tip-bot for Thomas Gleixner Message-ID: Cc: ysato@users.sourceforge.jp, tglx@linutronix.de, linux-kernel@vger.kernel.org, acme@kernel.org, mingo@kernel.org, anna-maria@linutronix.de, hpa@zytor.com, peterz@infradead.org, bigeasy@linutronix.de, torvalds@linux-foundation.org, alexander.shishkin@linux.intel.com, dalias@libc.org Reply-To: ysato@users.sourceforge.jp, mingo@kernel.org, acme@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, hpa@zytor.com, anna-maria@linutronix.de, alexander.shishkin@linux.intel.com, dalias@libc.org, torvalds@linux-foundation.org, peterz@infradead.org, bigeasy@linutronix.de In-Reply-To: <20160713153334.597790464@linutronix.de> References: <20160713153334.597790464@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:smp/hotplug] sh/perf: Convert the hotplug notifiers to state machine callbacks Git-Commit-ID: e3cfce17d309a3c914e36ac4b4b26c30045d4274 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: e3cfce17d309a3c914e36ac4b4b26c30045d4274 Gitweb: http://git.kernel.org/tip/e3cfce17d309a3c914e36ac4b4b26c30045d4274 Author: Thomas Gleixner AuthorDate: Wed, 13 Jul 2016 17:16:23 +0000 Committer: Ingo Molnar CommitDate: Thu, 14 Jul 2016 09:34:39 +0200 sh/perf: Convert the hotplug notifiers to state machine callbacks Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. Signed-off-by: Thomas Gleixner Signed-off-by: Anna-Maria Gleixner Reviewed-by: Sebastian Andrzej Siewior Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Rich Felker Cc: Yoshinori Sato Cc: linux-sh@vger.kernel.org Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153334.597790464@linutronix.de Signed-off-by: Ingo Molnar --- arch/sh/kernel/perf_event.c | 23 ++++------------------- include/linux/cpuhotplug.h | 1 + 2 files changed, 5 insertions(+), 19 deletions(-) diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c index 4dca183..ba3269a 100644 --- a/arch/sh/kernel/perf_event.c +++ b/arch/sh/kernel/perf_event.c @@ -352,28 +352,12 @@ static struct pmu pmu = { .read = sh_pmu_read, }; -static void sh_pmu_setup(int cpu) +static int sh_pmu_prepare_cpu(unsigned int cpu) { struct cpu_hw_events *cpuhw = &per_cpu(cpu_hw_events, cpu); memset(cpuhw, 0, sizeof(struct cpu_hw_events)); -} - -static int -sh_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu) -{ - unsigned int cpu = (long)hcpu; - - switch (action & ~CPU_TASKS_FROZEN) { - case CPU_UP_PREPARE: - sh_pmu_setup(cpu); - break; - - default: - break; - } - - return NOTIFY_OK; + return 0; } int register_sh_pmu(struct sh_pmu *_pmu) @@ -394,6 +378,7 @@ int register_sh_pmu(struct sh_pmu *_pmu) WARN_ON(_pmu->num_events > MAX_HWEVENTS); perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW); - perf_cpu_notifier(sh_pmu_notifier); + cpuhp_setup_state(CPUHP_PERF_SUPERH, "PERF_SUPERH", sh_pmu_prepare_cpu, + NULL); return 0; } diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index fea6666..16ab417 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -11,6 +11,7 @@ enum cpuhp_state { CPUHP_PERF_X86_RAPL_PREP, CPUHP_PERF_BFIN, CPUHP_PERF_POWER, + CPUHP_PERF_SUPERH, CPUHP_NOTIFY_PREPARE, CPUHP_BRINGUP_CPU, CPUHP_AP_IDLE_DEAD,