From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8805DC433B4 for ; Thu, 20 May 2021 18:47:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61DFC611AE for ; Thu, 20 May 2021 18:47:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236232AbhETStE (ORCPT ); Thu, 20 May 2021 14:49:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:39506 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236187AbhETSsz (ORCPT ); Thu, 20 May 2021 14:48:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 91D866124C; Thu, 20 May 2021 18:47:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621536453; bh=W3ebu1Os4hN8pXOrxUPbr5Ll1oiTdcAgadaiK+KlHbQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u632zSmy4PnY1SoXPXbaea5Pq3AFpMcfSjIVISALoqozg9k/9Onrlg5Do/XGh3+K6 C/HByhvFkyVxtjeMSTbcc6wduls1hjWmF/qgp3nj3Fkr1HRthIDgjZFAQRt5zxYB7B hUSCTh0VE1eqmrx87tiaIel3eVA91UoLMBP0B2M6K9nLtCWuVisXrFIiBL0oHZN9cQ QYdGxMIADr9XAWUvM1yXFpeej8lOe3qcHTjQyCESDWFtomk+Sh6xkUr+1OjpKn/e7i 0OaGMr/kJIN9FjUDQucdPF+z4hL2y1BDdGVm3SyFHV/ZUPlZz4FGANndle14oGMOpm fQqXhQTHmUe8g== From: Will Deacon To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Will Deacon , Frederic Weisbecker , Thomas Gleixner , Marc Zyngier , Lorenzo Colitti , John Stultz , Stephen Boyd , kernel-team@android.com Subject: [PATCH 5/5] timer_list: Print name of per-cpu wakeup device Date: Thu, 20 May 2021 19:47:05 +0100 Message-Id: <20210520184705.10845-6-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210520184705.10845-1-will@kernel.org> References: <20210520184705.10845-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With the introduction of per-cpu wakeup devices that can be used in preference to the broadcast timer, print the name of such devices when they are available. Cc: Frederic Weisbecker Cc: Thomas Gleixner Cc: Marc Zyngier Cc: Lorenzo Colitti Cc: John Stultz Cc: Stephen Boyd Signed-off-by: Will Deacon --- kernel/time/tick-broadcast.c | 7 +++++++ kernel/time/tick-internal.h | 1 + kernel/time/timer_list.c | 11 ++++++++++- 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index ba5264e210d9..dbafa7d14aff 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -63,6 +63,13 @@ struct cpumask *tick_get_broadcast_mask(void) return tick_broadcast_mask; } +static struct clock_event_device *tick_get_oneshot_wakeup_device(int cpu); + +const struct clock_event_device *tick_get_wakeup_device(int cpu) +{ + return tick_get_oneshot_wakeup_device(cpu); +} + /* * Start the device in periodic mode */ diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h index 30c89639e305..6a742a29e545 100644 --- a/kernel/time/tick-internal.h +++ b/kernel/time/tick-internal.h @@ -71,6 +71,7 @@ extern void tick_set_periodic_handler(struct clock_event_device *dev, int broadc extern int tick_broadcast_update_freq(struct clock_event_device *dev, u32 freq); extern struct tick_device *tick_get_broadcast_device(void); extern struct cpumask *tick_get_broadcast_mask(void); +extern const struct clock_event_device *tick_get_wakeup_device(int cpu); # else /* !CONFIG_GENERIC_CLOCKEVENTS_BROADCAST: */ static inline void tick_install_broadcast_device(struct clock_event_device *dev, int cpu) { } static inline int tick_is_broadcast_device(struct clock_event_device *dev) { return 0; } diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c index 6939140ab7c5..01158983a335 100644 --- a/kernel/time/timer_list.c +++ b/kernel/time/timer_list.c @@ -229,6 +229,15 @@ print_tickdevice(struct seq_file *m, struct tick_device *td, int cpu) SEQ_printf(m, "\n"); SEQ_printf(m, " retries: %lu\n", dev->retries); SEQ_printf(m, "\n"); + +#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST + if (cpu >= 0) { + const struct clock_event_device *wd = + tick_get_wakeup_device(cpu); + SEQ_printf(m, "Wakeup Device: %s\n", wd ? wd->name : ""); + SEQ_printf(m, "\n"); + } +#endif } static void timer_list_show_tickdevices_header(struct seq_file *m) @@ -248,7 +257,7 @@ static void timer_list_show_tickdevices_header(struct seq_file *m) static inline void timer_list_header(struct seq_file *m, u64 now) { - SEQ_printf(m, "Timer List Version: v0.8\n"); + SEQ_printf(m, "Timer List Version: v0.9\n"); SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES); SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now); SEQ_printf(m, "\n"); -- 2.31.1.818.g46aad6cb9e-goog