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[2620:137:e000::1:20]) by mx.google.com with ESMTP id bm21-20020a0564020b1500b00462f4ea167esi7616011edb.315.2022.11.06.15.48.41; Sun, 06 Nov 2022 15:49:06 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbiKFXeN (ORCPT + 99 others); Sun, 6 Nov 2022 18:34:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230175AbiKFXeF (ORCPT ); Sun, 6 Nov 2022 18:34:05 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0A88D117 for ; Sun, 6 Nov 2022 15:34:04 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3A26360DFB for ; Sun, 6 Nov 2022 23:34:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9658BC43470; Sun, 6 Nov 2022 23:34:03 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1orp9u-008UPY-0i; Sun, 06 Nov 2022 18:34:34 -0500 Message-ID: <20221106233434.059512224@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 06 Nov 2022 18:30:39 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Thomas Gleixner , Stephen Boyd , Guenter Roeck , Anna-Maria Gleixner , Andrew Morton , Julia Lawall , Mark Rutland , Daniel Lezcano , linux-arm-kernel@lists.infradead.org, Marc Zyngier Subject: [for-linus][PATCH 2/5] clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer_shutdown() function References: <20221106233037.815236769@goodmis.org> MIME-Version: 1.0 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748792557119680056?= X-GMAIL-MSGID: =?utf-8?q?1748792557119680056?= From: "Steven Rostedt (Google)" A new "shutdown" timer state is being added to the generic timer code. One of the functions to change the timer into the state is called "timer_shutdown()". This means that there can not be other functions called "timer_shutdown()" as the timer code owns the "timer_*" name space. Rename timer_shutdown() to arch_timer_shutdown() to avoid this conflict. Link: https://lkml.kernel.org/r/20221106212702.002251651@goodmis.org Link: https://lore.kernel.org/all/20221105060155.409832154@goodmis.org/ Cc: Mark Rutland Cc: Linus Torvalds Cc: Stephen Boyd Cc: Anna-Maria Gleixner Cc: Andrew Morton Cc: Julia Lawall Cc: Daniel Lezcano Cc: Thomas Gleixner Cc: linux-arm-kernel@lists.infradead.org Acked-by: Marc Zyngier Reviewed-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Steven Rostedt (Google) --- drivers/clocksource/arm_arch_timer.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index a7ff77550e17..9c3420a0d19d 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -687,8 +687,8 @@ static irqreturn_t arch_timer_handler_virt_mem(int irq, void *dev_id) return timer_handler(ARCH_TIMER_MEM_VIRT_ACCESS, evt); } -static __always_inline int timer_shutdown(const int access, - struct clock_event_device *clk) +static __always_inline int arch_timer_shutdown(const int access, + struct clock_event_device *clk) { unsigned long ctrl; @@ -701,22 +701,22 @@ static __always_inline int timer_shutdown(const int access, static int arch_timer_shutdown_virt(struct clock_event_device *clk) { - return timer_shutdown(ARCH_TIMER_VIRT_ACCESS, clk); + return arch_timer_shutdown(ARCH_TIMER_VIRT_ACCESS, clk); } static int arch_timer_shutdown_phys(struct clock_event_device *clk) { - return timer_shutdown(ARCH_TIMER_PHYS_ACCESS, clk); + return arch_timer_shutdown(ARCH_TIMER_PHYS_ACCESS, clk); } static int arch_timer_shutdown_virt_mem(struct clock_event_device *clk) { - return timer_shutdown(ARCH_TIMER_MEM_VIRT_ACCESS, clk); + return arch_timer_shutdown(ARCH_TIMER_MEM_VIRT_ACCESS, clk); } static int arch_timer_shutdown_phys_mem(struct clock_event_device *clk) { - return timer_shutdown(ARCH_TIMER_MEM_PHYS_ACCESS, clk); + return arch_timer_shutdown(ARCH_TIMER_MEM_PHYS_ACCESS, clk); } static __always_inline void set_next_event(const int access, unsigned long evt, From patchwork Sun Nov 6 23:30:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 16203 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp1727327wru; Sun, 6 Nov 2022 15:41:36 -0800 (PST) X-Google-Smtp-Source: AMsMyM7lyVL+9iI8ZTH8g61OU/n4YC9uYdsHOwCNoKKduwcEFtBY1h7j6oxERNCgOeEZmmvjEIZD X-Received: by 2002:a17:907:70a:b0:750:bf91:caa3 with SMTP id xb10-20020a170907070a00b00750bf91caa3mr45689842ejb.711.1667778096668; Sun, 06 Nov 2022 15:41:36 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1667778096; cv=none; d=google.com; s=arc-20160816; b=ht4il5GJYU19ITNLKbxnXzFj5slQfYcA5HLyl7LSt6U0k4IogEvUKfeN8mbBjZcK22 VQ/lNKp4G89l5insFvcm3eOv7uFmMzyb9SRpmQ1/8xKU1bXQAvUCyoare7n1vEySgm2e o4vRSsOD6zk5j5M+16X96JB+NDPdwr+L68m1yWNEt5yb4z1JGgfT+fg5uLmdS63AG4gy 0QbdrVODCZbWJWDKU94b1vhEnMYQ8qAnv86OQJs5wApZiMz1XjAZ84SLPwOXgBhh48Vy hyBrfYOCvElXTBls1ztV5aOVkT1Src9vgXyCcAr8P3jvSrx+M9GQOJzSZD+MrE5BTJXm KtpQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:subject:cc:to:from:date :user-agent:message-id; bh=hJFDSUtYL2/M/HQVNPKLcAcezOB87x2ECTQtO9QflT8=; b=cDpWcvUXPwW2O9L3AOpXAOVEqntCoirr+Dg5GEf8MVR6ePa4rSxorqmKpZ4ypazP8N RN/BZQlrSrqNC4BkwoixVbyhpofaMB949wrVaP3D5X4jmlgCazFsNB3OfDQ+SUfys0di FqDAExq6HsxejytX9+GcQRevdMHc5+fIVClQ58p5JYXiSHWS97tKr1AatS3FBPPYMBNZ EJ3iyIXxEi639ZV6lYFAto1gNWKZJmOof+UbLJ5xs5E/89Xg9oWfypQ52AswxD+XJz71 5dYsjBOA2in6ZmXMRwB2K/eTLfzdiQcMFrccTEZYvl+FQI6Ast/RCw0ZPzUfpWFtDfZq 7zEg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id qk44-20020a1709077fac00b007ae0ca417e4si7534843ejc.690.2022.11.06.15.41.11; Sun, 06 Nov 2022 15:41:36 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230219AbiKFXeI (ORCPT + 99 others); Sun, 6 Nov 2022 18:34:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230145AbiKFXeF (ORCPT ); Sun, 6 Nov 2022 18:34:05 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3FBCD11B for ; Sun, 6 Nov 2022 15:34:04 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4D95E60E00 for ; Sun, 6 Nov 2022 23:34:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9105C43144; Sun, 6 Nov 2022 23:34:03 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1orp9u-008UQ6-1J; Sun, 06 Nov 2022 18:34:34 -0500 Message-ID: <20221106233434.239709079@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 06 Nov 2022 18:30:40 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Thomas Gleixner , Stephen Boyd , Guenter Roeck , Anna-Maria Gleixner , Andrew Morton , Julia Lawall , Daniel Lezcano Subject: [for-linus][PATCH 3/5] clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function References: <20221106233037.815236769@goodmis.org> MIME-Version: 1.0 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748792085722539774?= X-GMAIL-MSGID: =?utf-8?q?1748792085722539774?= From: "Steven Rostedt (Google)" A new "shutdown" timer state is being added to the generic timer code. One of the functions to change the timer into the state is called "timer_shutdown()". This means that there can not be other functions called "timer_shutdown()" as the timer code owns the "timer_*" name space. Rename timer_shutdown() to evt_timer_shutdown() to avoid this conflict. Link: https://lkml.kernel.org/r/20221106212702.182883323@goodmis.org Link: https://lore.kernel.org/all/20221105060155.592778858@goodmis.org/ Cc: Daniel Lezcano Cc: Linus Torvalds Cc: Stephen Boyd Cc: Anna-Maria Gleixner Cc: Andrew Morton Cc: Julia Lawall Cc: Thomas Gleixner Reviewed-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Steven Rostedt (Google) --- drivers/clocksource/timer-sp804.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/clocksource/timer-sp804.c b/drivers/clocksource/timer-sp804.c index e6a87f4af2b5..cd1916c05325 100644 --- a/drivers/clocksource/timer-sp804.c +++ b/drivers/clocksource/timer-sp804.c @@ -155,14 +155,14 @@ static irqreturn_t sp804_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static inline void timer_shutdown(struct clock_event_device *evt) +static inline void evt_timer_shutdown(struct clock_event_device *evt) { writel(0, common_clkevt->ctrl); } static int sp804_shutdown(struct clock_event_device *evt) { - timer_shutdown(evt); + evt_timer_shutdown(evt); return 0; } @@ -171,7 +171,7 @@ static int sp804_set_periodic(struct clock_event_device *evt) unsigned long ctrl = TIMER_CTRL_32BIT | TIMER_CTRL_IE | TIMER_CTRL_PERIODIC | TIMER_CTRL_ENABLE; - timer_shutdown(evt); + evt_timer_shutdown(evt); writel(common_clkevt->reload, common_clkevt->load); writel(ctrl, common_clkevt->ctrl); return 0; From patchwork Sun Nov 6 23:30:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 16205 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp1730221wru; Sun, 6 Nov 2022 15:48:44 -0800 (PST) X-Google-Smtp-Source: AMsMyM5HxhMyY2IQ3m0LJmEDasZwV1JiXMMmq3C2GYTcQePeLweKWH6ht+9YkFcGQVQvKe49/yZg X-Received: by 2002:a17:906:5f8a:b0:7ad:ca14:3ae with SMTP id a10-20020a1709065f8a00b007adca1403aemr39368643eju.509.1667778523996; Sun, 06 Nov 2022 15:48:43 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1667778523; cv=none; d=google.com; s=arc-20160816; b=tJ90TGhU4DOSy4zfUCz5J1F75Jbko9UhooWcERrNofnQC28Z6TJYFhKKKVc/RfFea2 OssGlX0nNwjRDudC4YYS4EViCSs9FVva8IOAjZTMmDsr90WTalbh86eXrYo8Q25SviNh 1+x2t5su3ztoFU62vy4UVmmIf0G8uRTUakiSRcEiqHfmeTQXvNkDEW04QSoYggzJanRZ FKwzPF8oZuoNKxQzwvf4TmeDvlyfQkGFU7CpFSTnkyhuijFYfwq8ml+wGGUldujBJclp BHjOTiHTxh74fGH1TDTLPfkJVgv9ChqahfiaTftjQiLpkPZkdk5xo1W97gOhic0jK56g Wlrg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:subject:cc:to:from:date :user-agent:message-id; bh=dUPH4dZCLu8gyVpgBjwXBvmd+u75mtelYyFpM10NnKg=; b=r4/+G0kcD6rAx2SQYF94sbGeHxtej4Nvw8RRfb3a3v8+amn8BngX8sdbQtSgd4jIxB tbyjFjxIADbXrXwxc6HeU94hLeYLkj4TRyah3Hi3nuumHI3nPO7lHcIc3a00GIz8fDXE HGyaNCb9tJOqYM8d1RBXGPJc7LPKO+obR3BUiWN93SorxBSMu87RkGgEjS1N0rA/0nd9 AkC3+bC0/L2rYaHSoQNws8pulJGmyHu4qmcvjG6zqYk5lm7ktJMkYNg5MOHUC9qcTDGq qA/ynFTVTqyvMZexUUZMSdAPWqSDNDscl5VZWujDDaWbrLLCkx/Nze/1sGB6lzZtFgVb ndOw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id c24-20020a170906171800b0078dc3cb8b48si5237083eje.625.2022.11.06.15.48.20; Sun, 06 Nov 2022 15:48:43 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230222AbiKFXeQ (ORCPT + 99 others); Sun, 6 Nov 2022 18:34:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230185AbiKFXeG (ORCPT ); Sun, 6 Nov 2022 18:34:06 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1A42D124 for ; Sun, 6 Nov 2022 15:34:04 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7B8A160DFF for ; Sun, 6 Nov 2022 23:34:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3FF6C43145; Sun, 6 Nov 2022 23:34:03 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1orp9u-008UQe-1u; Sun, 06 Nov 2022 18:34:34 -0500 Message-ID: <20221106233434.425162916@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 06 Nov 2022 18:30:41 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Thomas Gleixner , Stephen Boyd , Guenter Roeck , Anna-Maria Gleixner , Andrew Morton , Julia Lawall Subject: [for-linus][PATCH 4/5] timers: Add timer_shutdown_sync() and timer_shutdown() to be called before freeing timers References: <20221106233037.815236769@goodmis.org> MIME-Version: 1.0 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748792533658675316?= X-GMAIL-MSGID: =?utf-8?q?1748792533658675316?= From: "Steven Rostedt (Google)" We are hitting a common bug were a timer is being triggered after it is freed. This causes a corruption in the timer link list and crashes the kernel. Unfortunately it is not easy to know what timer it was that was freed. Looking at the code, it appears that there are several cases that del_timer() is used when del_timer_sync() should have been. Add a timer_shutdown_sync() that not only does a del_timer_sync() but will mark the timer as terminated in case it gets rearmed, it will trigger a WARN_ON. The timer_shutdown_sync() is more likely to be used by developers that are about to free a timer, then using del_timer_sync() as the latter is not as obvious to being needed for freeing. Having the word "shutdown" in the name of the function will hopefully help developers know that that function needs to be called before freeing. The added bonus is the marking of the timer as being freed such that it will trigger a warning if it gets rearmed. At least that way if the system crashes on a freed timer, at least we may see which timer it was that was freed. There's some situations that already know that the timer is shutdown and does not need to perform the synchronization (or can not due to its context). For these locations there's timer_shutdown() that only shuts down the timer (prevents it from being rearmed) but does not add checks if the timer is currently running. This code is taken from Thomas Gleixner's "untested" version from my original patch and modified after testing and with some other comments from Linus addressed. As well as some extra comments added. Link: https://lore.kernel.org/all/87pmlrkgi3.ffs@tglx/ Link: https://lkml.kernel.org/r/20221106212702.363575800@goodmis.org Link: https://lore.kernel.org/all/20221105060024.598488967@goodmis.org/ Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Stephen Boyd Cc: Anna-Maria Gleixner Cc: Andrew Morton Cc: Julia Lawall Tested-by: Guenter Roeck Signed-off-by: Steven Rostedt (Google) --- .../RCU/Design/Requirements/Requirements.rst | 2 +- Documentation/core-api/local_ops.rst | 2 +- Documentation/kernel-hacking/locking.rst | 5 ++ include/linux/timer.h | 62 ++++++++++++++++-- kernel/time/timer.c | 64 ++++++++++--------- 5 files changed, 97 insertions(+), 38 deletions(-) diff --git a/Documentation/RCU/Design/Requirements/Requirements.rst b/Documentation/RCU/Design/Requirements/Requirements.rst index a0f8164c8513..ec6de88846b9 100644 --- a/Documentation/RCU/Design/Requirements/Requirements.rst +++ b/Documentation/RCU/Design/Requirements/Requirements.rst @@ -1858,7 +1858,7 @@ unloaded. After a given module has been unloaded, any attempt to call one of its functions results in a segmentation fault. The module-unload functions must therefore cancel any delayed calls to loadable-module functions, for example, any outstanding mod_timer() must be dealt -with via del_timer_sync() or similar. +with via timer_shutdown_sync(). Unfortunately, there is no way to cancel an RCU callback; once you invoke call_rcu(), the callback function is eventually going to be diff --git a/Documentation/core-api/local_ops.rst b/Documentation/core-api/local_ops.rst index 2ac3f9f29845..0b42ceaaf3c4 100644 --- a/Documentation/core-api/local_ops.rst +++ b/Documentation/core-api/local_ops.rst @@ -191,7 +191,7 @@ Here is a sample module which implements a basic per cpu counter using static void __exit test_exit(void) { - del_timer_sync(&test_timer); + timer_shutdown_sync(&test_timer); } module_init(test_init); diff --git a/Documentation/kernel-hacking/locking.rst b/Documentation/kernel-hacking/locking.rst index 6805ae6e86e6..eb341b69fd15 100644 --- a/Documentation/kernel-hacking/locking.rst +++ b/Documentation/kernel-hacking/locking.rst @@ -1009,6 +1009,11 @@ use del_timer_sync() (``include/linux/timer.h``) to handle this case. It returns the number of times the timer had to be deleted before we finally stopped it from adding itself back in. +Before freeing a timer, timer_shutdown() or timer_shutdown_sync() should be +called which will keep it from being rearmed, although if it is rearmed, it +will produce a warning. + + Locking Speed ============= diff --git a/include/linux/timer.h b/include/linux/timer.h index 648f00105f58..0b959b52d0db 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -168,12 +168,45 @@ static inline int timer_pending(const struct timer_list * timer) return !hlist_unhashed_lockless(&timer->entry); } +extern int __del_timer(struct timer_list * timer, bool free); + extern void add_timer_on(struct timer_list *timer, int cpu); -extern int del_timer(struct timer_list * timer); extern int mod_timer(struct timer_list *timer, unsigned long expires); extern int mod_timer_pending(struct timer_list *timer, unsigned long expires); extern int timer_reduce(struct timer_list *timer, unsigned long expires); +/** + * del_timer - deactivate a timer. + * @timer: the timer to be deactivated + * + * del_timer() deactivates a timer - this works on both active and inactive + * timers. + * + * The function returns whether it has deactivated a pending timer or not. + * (ie. del_timer() of an inactive timer returns 0, del_timer() of an + * active timer returns 1.) + */ +static inline int del_timer(struct timer_list *timer) +{ + return __del_timer(timer, false); +} + +/** + * timer_shutdown - deactivate a timer and shut it down + * @timer: the timer to be deactivated + * + * timer_shutdown() deactivates a timer - this works on both active + * and inactive timers, and will prevent it from being rearmed. + * + * The function returns whether it has deactivated a pending timer or not. + * (ie. timer_shutdown() of an inactive timer returns 0, + * timer_shutdown() of an active timer returns 1.) + */ +static inline int timer_shutdown(struct timer_list *timer) +{ + return __del_timer(timer, true); +} + /* * The jiffies value which is added to now, when there is no timer * in the timer wheel: @@ -183,12 +216,29 @@ extern int timer_reduce(struct timer_list *timer, unsigned long expires); extern void add_timer(struct timer_list *timer); extern int try_to_del_timer_sync(struct timer_list *timer); +extern int __del_timer_sync(struct timer_list *timer, bool free); -#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT) - extern int del_timer_sync(struct timer_list *timer); -#else -# define del_timer_sync(t) del_timer(t) -#endif +static inline int del_timer_sync(struct timer_list *timer) +{ + return __del_timer_sync(timer, false); +} + +/** + * timer_shutdown_sync - called before freeing the timer + * @timer: The timer to be freed + * + * Shutdown the timer before freeing. This will return when all pending timers + * have finished and it is safe to free the timer. + * + * Note, after calling this, if the timer is added back to the queue + * it will fail to be added and a WARNING will be triggered. + * + * Returns if it deactivated a pending timer or not. + */ +static inline int timer_shutdown_sync(struct timer_list *timer) +{ + return __del_timer_sync(timer, true); +} #define del_singleshot_timer_sync(t) del_timer_sync(t) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 717fcb9fb14a..7c224766065e 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1017,7 +1017,8 @@ __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int option unsigned int idx = UINT_MAX; int ret = 0; - BUG_ON(!timer->function); + if (WARN_ON_ONCE(!timer->function)) + return -EINVAL; /* * This is a common optimization triggered by the networking code - if @@ -1193,7 +1194,8 @@ EXPORT_SYMBOL(timer_reduce); */ void add_timer(struct timer_list *timer) { - BUG_ON(timer_pending(timer)); + if (WARN_ON_ONCE(timer_pending(timer))) + return; __mod_timer(timer, timer->expires, MOD_TIMER_NOTPENDING); } EXPORT_SYMBOL(add_timer); @@ -1210,7 +1212,8 @@ void add_timer_on(struct timer_list *timer, int cpu) struct timer_base *new_base, *base; unsigned long flags; - BUG_ON(timer_pending(timer) || !timer->function); + if (WARN_ON_ONCE(timer_pending(timer) || !timer->function)) + return; new_base = get_timer_cpu_base(timer->flags, cpu); @@ -1237,18 +1240,7 @@ void add_timer_on(struct timer_list *timer, int cpu) } EXPORT_SYMBOL_GPL(add_timer_on); -/** - * del_timer - deactivate a timer. - * @timer: the timer to be deactivated - * - * del_timer() deactivates a timer - this works on both active and inactive - * timers. - * - * The function returns whether it has deactivated a pending timer or not. - * (ie. del_timer() of an inactive timer returns 0, del_timer() of an - * active timer returns 1.) - */ -int del_timer(struct timer_list *timer) +int __del_timer(struct timer_list *timer, bool free) { struct timer_base *base; unsigned long flags; @@ -1259,21 +1251,20 @@ int del_timer(struct timer_list *timer) if (timer_pending(timer)) { base = lock_timer_base(timer, &flags); ret = detach_if_pending(timer, base, true); + if (free) + timer->function = NULL; + raw_spin_unlock_irqrestore(&base->lock, flags); + } else if (free) { + base = lock_timer_base(timer, &flags); + timer->function = NULL; raw_spin_unlock_irqrestore(&base->lock, flags); } return ret; } -EXPORT_SYMBOL(del_timer); +EXPORT_SYMBOL(__del_timer); -/** - * try_to_del_timer_sync - Try to deactivate a timer - * @timer: timer to delete - * - * This function tries to deactivate a timer. Upon successful (ret >= 0) - * exit the timer is not queued and the handler is not running on any CPU. - */ -int try_to_del_timer_sync(struct timer_list *timer) +static int __try_to_del_timer_sync(struct timer_list *timer, bool free) { struct timer_base *base; unsigned long flags; @@ -1285,11 +1276,25 @@ int try_to_del_timer_sync(struct timer_list *timer) if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); + if (free) + timer->function = NULL; raw_spin_unlock_irqrestore(&base->lock, flags); return ret; } + +/** + * try_to_del_timer_sync - Try to deactivate a timer + * @timer: timer to delete + * + * This function tries to deactivate a timer. Upon successful (ret >= 0) + * exit the timer is not queued and the handler is not running on any CPU. + */ +int try_to_del_timer_sync(struct timer_list *timer) +{ + return __try_to_del_timer_sync(timer, false); +} EXPORT_SYMBOL(try_to_del_timer_sync); #ifdef CONFIG_PREEMPT_RT @@ -1365,10 +1370,10 @@ static inline void timer_sync_wait_running(struct timer_base *base) { } static inline void del_timer_wait_running(struct timer_list *timer) { } #endif -#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT) /** - * del_timer_sync - deactivate a timer and wait for the handler to finish. + * __del_timer_sync - deactivate a timer and wait for the handler to finish. * @timer: the timer to be deactivated + * @free: Set to true if the timer is about to be freed * * This function only differs from del_timer() on SMP: besides deactivating * the timer it also makes sure the handler has finished executing on other @@ -1402,7 +1407,7 @@ static inline void del_timer_wait_running(struct timer_list *timer) { } * * The function returns whether it has deactivated a pending timer or not. */ -int del_timer_sync(struct timer_list *timer) +int __del_timer_sync(struct timer_list *timer, bool free) { int ret; @@ -1432,7 +1437,7 @@ int del_timer_sync(struct timer_list *timer) lockdep_assert_preemption_enabled(); do { - ret = try_to_del_timer_sync(timer); + ret = __try_to_del_timer_sync(timer, free); if (unlikely(ret < 0)) { del_timer_wait_running(timer); @@ -1442,8 +1447,7 @@ int del_timer_sync(struct timer_list *timer) return ret; } -EXPORT_SYMBOL(del_timer_sync); -#endif +EXPORT_SYMBOL(__del_timer_sync); static void call_timer_fn(struct timer_list *timer, void (*fn)(struct timer_list *), From patchwork Sun Nov 6 23:30:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 16204 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp1729886wru; Sun, 6 Nov 2022 15:48:01 -0800 (PST) X-Google-Smtp-Source: AMsMyM7tg9J+LEzr+OUlAFSsqek0YEa7iASSMgc3plbmIwSqgIr4fYAQ5ASAc8E7bT5CgI6gmNIu X-Received: by 2002:a17:907:a062:b0:7ad:d3a4:9e02 with SMTP id ia2-20020a170907a06200b007add3a49e02mr37442946ejc.186.1667778481537; Sun, 06 Nov 2022 15:48:01 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1667778481; cv=none; d=google.com; s=arc-20160816; b=GT/LhHViunEs8aE7WlLQZo8wxIHmJX0EDEZhK69YTFLHpjE5vK6RsPX+vo2BDGWLEQ R/HsorIvKCRtlKu94IBxf60Q0sULzZrtUR2rlfHxvmm3bRX5HFKYm1K6EYbLqXTzNdMZ YOwDO+9vbCeRu5mkEXZnxch8rUqtt4RAQsGQEu5gU3Ng3v/NPTpeJPosq+LiCUAObShk F00ojgGqtpSmEf6ez6cnBAv16YB4kclbH0wWmff3T5ERByz1zurNvDcVyaeyYROaurQp DwuBj5yDLx7Xdx5hq5+SrapEiMKyEjkGvcufaGx6JeLGse0QKFssP4VNrBc/LhqVBmT1 T2ZA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:subject:cc:to:from:date :user-agent:message-id; bh=FmP1hauVziZzDldsXPSuKYbEMDcgHbHaU7idS1gBcNU=; b=vy1UHYFEF8x4AHCjbcFQ7ynFqLJBhiIR5AVM/CLCDiyNT4+VUUjY5WmWtVvDuAxi5s 8KzndVjNLqqHlghNs6y28oTKyB9xU2h0Adz8jnbkIF/pZ+INa7EMar/7qiocH/XNxrYD CPYlNuE8MzxWUOuMpdgHBBm4MB32s8H7mRNSczUxTC/rS3paCOZlZsQqlhitpUHbEHCr eUigtth/z9FyAz6u2Ne7zucc9cSJt15y38fa5NcB/oxctXlb5laLVJuVEYgdpgF8C84C ZarKRZb9DXskO7SaAg5neLTV8b9CAddG6dMtC/xwGOCO7v58bnZlFw/QbimSi0Ow4mVv u0SA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q20-20020a056402519400b00457c6b5dc07si9633908edd.455.2022.11.06.15.47.35; Sun, 06 Nov 2022 15:48:01 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230269AbiKFXeg (ORCPT + 99 others); Sun, 6 Nov 2022 18:34:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230233AbiKFXeK (ORCPT ); Sun, 6 Nov 2022 18:34:10 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23FD9D117 for ; Sun, 6 Nov 2022 15:34:07 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 8EC88B80C04 for ; Sun, 6 Nov 2022 23:34:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A138C4314A; Sun, 6 Nov 2022 23:34:04 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.96) (envelope-from ) id 1orp9u-008URC-2V; Sun, 06 Nov 2022 18:34:34 -0500 Message-ID: <20221106233434.609541460@goodmis.org> User-Agent: quilt/0.66 Date: Sun, 06 Nov 2022 18:30:42 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Thomas Gleixner , Stephen Boyd , Guenter Roeck , Anna-Maria Gleixner , Andrew Morton , Julia Lawall Subject: [for-linus][PATCH 5/5] treewide: Convert del_timer*() to timer_shutdown*() References: <20221106233037.815236769@goodmis.org> MIME-Version: 1.0 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748792488860963343?= X-GMAIL-MSGID: =?utf-8?q?1748792488860963343?= From: "Steven Rostedt (Google)" Due to several bugs caused by timers being re-armed after they are shutdown and just before they are freed, a new state of timers was added called "shutdown". After a timer is set to this state, then it can no longer be re-armed, and will trigger a warning if it is. The following script was run to find all the trivial locations where del_timer() or del_timer_sync() is called in the same function that the object holding the timer is freed. It also ignores any locations where the timer->function is modified between the del_timer*() and the free(), as that is not considered a "trivial" case. This was created by using a coccinelle script and the following commands: $ cat timer.cocci @@ expression ptr, slab; identifier timer, rfield; @@ ( - del_timer(&ptr->timer); + timer_shutdown(&ptr->timer); | - del_timer_sync(&ptr->timer); + timer_shutdown_sync(&ptr->timer); ) ... when strict when != ptr->timer ( kfree_rcu(ptr, rfield); | kmem_cache_free(slab, ptr); | kfree(ptr); ) $ spatch --dir timer.cocci . > /tmp/t.patch $ patch -p1 < /tmp/t.patch Link: https://lkml.kernel.org/r/20221106212702.547242324@goodmis.org Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Stephen Boyd Cc: Anna-Maria Gleixner Cc: Andrew Morton Cc: Julia Lawall Tested-by: Guenter Roeck Signed-off-by: Steven Rostedt (Google) --- arch/sh/drivers/push-switch.c | 2 +- block/blk-iocost.c | 2 +- block/blk-iolatency.c | 2 +- block/kyber-iosched.c | 2 +- drivers/acpi/apei/ghes.c | 2 +- drivers/atm/idt77252.c | 6 +++--- drivers/block/drbd/drbd_main.c | 2 +- drivers/block/loop.c | 2 +- drivers/bluetooth/hci_bcsp.c | 2 +- drivers/bluetooth/hci_qca.c | 4 ++-- drivers/gpu/drm/i915/i915_sw_fence.c | 2 +- drivers/hid/hid-wiimote-core.c | 2 +- drivers/input/keyboard/locomokbd.c | 2 +- drivers/input/keyboard/omap-keypad.c | 2 +- drivers/input/mouse/alps.c | 2 +- drivers/isdn/mISDN/l1oip_core.c | 4 ++-- drivers/isdn/mISDN/timerdev.c | 4 ++-- drivers/leds/trigger/ledtrig-activity.c | 2 +- drivers/leds/trigger/ledtrig-heartbeat.c | 2 +- drivers/leds/trigger/ledtrig-pattern.c | 2 +- drivers/leds/trigger/ledtrig-transient.c | 2 +- drivers/media/pci/ivtv/ivtv-driver.c | 2 +- drivers/media/usb/pvrusb2/pvrusb2-hdw.c | 16 ++++++++-------- drivers/media/usb/s2255/s2255drv.c | 4 ++-- drivers/net/ethernet/intel/i40e/i40e_main.c | 6 +++--- drivers/net/ethernet/marvell/sky2.c | 2 +- drivers/net/ethernet/sun/sunvnet.c | 2 +- drivers/net/usb/sierra_net.c | 2 +- .../broadcom/brcm80211/brcmfmac/btcoex.c | 2 +- drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 2 +- drivers/net/wireless/intersil/hostap/hostap_ap.c | 2 +- drivers/net/wireless/marvell/mwifiex/main.c | 2 +- drivers/net/wireless/microchip/wilc1000/hif.c | 6 +++--- drivers/nfc/pn533/pn533.c | 2 +- drivers/nfc/pn533/uart.c | 2 +- drivers/pcmcia/bcm63xx_pcmcia.c | 2 +- drivers/pcmcia/electra_cf.c | 2 +- drivers/pcmcia/omap_cf.c | 2 +- drivers/pcmcia/pd6729.c | 4 ++-- drivers/pcmcia/yenta_socket.c | 4 ++-- drivers/scsi/qla2xxx/qla_edif.c | 4 ++-- .../staging/media/atomisp/i2c/atomisp-lm3554.c | 2 +- drivers/tty/n_gsm.c | 2 +- drivers/tty/sysrq.c | 2 +- drivers/usb/gadget/udc/m66592-udc.c | 2 +- drivers/usb/serial/garmin_gps.c | 2 +- drivers/usb/serial/mos7840.c | 4 ++-- fs/ext4/super.c | 2 +- fs/nilfs2/segment.c | 2 +- net/802/garp.c | 2 +- net/802/mrp.c | 4 ++-- net/bridge/br_multicast.c | 8 ++++---- net/bridge/br_multicast_eht.c | 4 ++-- net/core/gen_estimator.c | 2 +- net/ipv4/ipmr.c | 2 +- net/ipv6/ip6mr.c | 2 +- net/mac80211/mesh_pathtbl.c | 2 +- net/netfilter/ipset/ip_set_list_set.c | 2 +- net/netfilter/ipvs/ip_vs_lblc.c | 2 +- net/netfilter/ipvs/ip_vs_lblcr.c | 2 +- net/netfilter/xt_IDLETIMER.c | 4 ++-- net/netfilter/xt_LED.c | 2 +- net/rxrpc/conn_object.c | 2 +- net/sched/cls_flow.c | 2 +- net/sunrpc/svc.c | 2 +- net/tipc/discover.c | 2 +- net/tipc/monitor.c | 2 +- sound/i2c/other/ak4117.c | 2 +- sound/synth/emux/emux.c | 2 +- 70 files changed, 97 insertions(+), 97 deletions(-) diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c index 2813140fd92b..c95f48ff3f6f 100644 --- a/arch/sh/drivers/push-switch.c +++ b/arch/sh/drivers/push-switch.c @@ -102,7 +102,7 @@ static int switch_drv_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); flush_work(&psw->work); - del_timer_sync(&psw->debounce); + timer_shutdown_sync(&psw->debounce); free_irq(irq, pdev); kfree(psw); diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 495396425bad..7edc695b3a3d 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -2814,7 +2814,7 @@ static void ioc_rqos_exit(struct rq_qos *rqos) ioc->running = IOC_STOP; spin_unlock_irq(&ioc->lock); - del_timer_sync(&ioc->timer); + timer_shutdown_sync(&ioc->timer); free_percpu(ioc->pcpu_stat); kfree(ioc); } diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c index 571fa95aafe9..c7049ab18312 100644 --- a/block/blk-iolatency.c +++ b/block/blk-iolatency.c @@ -645,7 +645,7 @@ static void blkcg_iolatency_exit(struct rq_qos *rqos) { struct blk_iolatency *blkiolat = BLKIOLATENCY(rqos); - del_timer_sync(&blkiolat->timer); + timer_shutdown_sync(&blkiolat->timer); flush_work(&blkiolat->enable_work); blkcg_deactivate_policy(rqos->q, &blkcg_policy_iolatency); kfree(blkiolat); diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c index b05357bced99..2146969237bf 100644 --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -434,7 +434,7 @@ static void kyber_exit_sched(struct elevator_queue *e) struct kyber_queue_data *kqd = e->elevator_data; int i; - del_timer_sync(&kqd->timer); + timer_shutdown_sync(&kqd->timer); blk_stat_disable_accounting(kqd->q); for (i = 0; i < KYBER_NUM_DOMAINS; i++) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 9952f3a792ba..9a0e41c21cf9 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -1405,7 +1405,7 @@ static int ghes_remove(struct platform_device *ghes_dev) ghes->flags |= GHES_EXITING; switch (generic->notify.type) { case ACPI_HEST_NOTIFY_POLLED: - del_timer_sync(&ghes->timer); + timer_shutdown_sync(&ghes->timer); break; case ACPI_HEST_NOTIFY_EXTERNAL: free_irq(ghes->irq, ghes); diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index 681cb3786794..eec0cc2144e0 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -2213,7 +2213,7 @@ idt77252_init_ubr(struct idt77252_dev *card, struct vc_map *vc, } spin_unlock_irqrestore(&vc->lock, flags); if (est) { - del_timer_sync(&est->timer); + timer_shutdown_sync(&est->timer); kfree(est); } @@ -2530,7 +2530,7 @@ idt77252_close(struct atm_vcc *vcc) vc->tx_vcc = NULL; if (vc->estimator) { - del_timer(&vc->estimator->timer); + timer_shutdown(&vc->estimator->timer); kfree(vc->estimator); vc->estimator = NULL; } @@ -3752,7 +3752,7 @@ static void __exit idt77252_exit(void) card = idt77252_chain; dev = card->atmdev; idt77252_chain = card->next; - del_timer_sync(&card->tst_timer); + timer_shutdown_sync(&card->tst_timer); if (dev->phy->stop) dev->phy->stop(dev); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index f3e4db16fd07..2dc5be89a001 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2184,7 +2184,7 @@ void drbd_destroy_device(struct kref *kref) struct drbd_resource *resource = device->resource; struct drbd_peer_device *peer_device, *tmp_peer_device; - del_timer_sync(&device->request_timer); + timer_shutdown_sync(&device->request_timer); /* paranoia asserts */ D_ASSERT(device, device->open_cnt == 0); diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ad92192c7d61..3ea087cd1f99 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1755,7 +1755,7 @@ static void lo_free_disk(struct gendisk *disk) if (lo->workqueue) destroy_workqueue(lo->workqueue); loop_free_idle_workers(lo, true); - del_timer_sync(&lo->timer); + timer_shutdown_sync(&lo->timer); mutex_destroy(&lo->lo_mutex); kfree(lo); } diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c index cf4a56095817..834b2efaa9bf 100644 --- a/drivers/bluetooth/hci_bcsp.c +++ b/drivers/bluetooth/hci_bcsp.c @@ -737,7 +737,7 @@ static int bcsp_close(struct hci_uart *hu) { struct bcsp_struct *bcsp = hu->priv; - del_timer_sync(&bcsp->tbcsp); + timer_shutdown_sync(&bcsp->tbcsp); hu->priv = NULL; diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 8df11016fd51..eb81296b284c 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -697,8 +697,8 @@ static int qca_close(struct hci_uart *hu) skb_queue_purge(&qca->txq); skb_queue_purge(&qca->rx_memdump_q); destroy_workqueue(qca->workqueue); - del_timer_sync(&qca->tx_idle_timer); - del_timer_sync(&qca->wake_retrans_timer); + timer_shutdown_sync(&qca->tx_idle_timer); + timer_shutdown_sync(&qca->wake_retrans_timer); qca->hu = NULL; kfree_skb(qca->rx_skb); diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c index 6fc0d1b89690..bfaa9a67dc35 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/i915_sw_fence.c @@ -465,7 +465,7 @@ static void irq_i915_sw_fence_work(struct irq_work *wrk) struct i915_sw_dma_fence_cb_timer *cb = container_of(wrk, typeof(*cb), work); - del_timer_sync(&cb->timer); + timer_shutdown_sync(&cb->timer); dma_fence_put(cb->dma); kfree_rcu(cb, rcu); diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index 4399d6c6afef..2c94308dda3c 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -1764,7 +1764,7 @@ static void wiimote_destroy(struct wiimote_data *wdata) spin_unlock_irqrestore(&wdata->state.lock, flags); cancel_work_sync(&wdata->init_worker); - del_timer_sync(&wdata->timer); + timer_shutdown_sync(&wdata->timer); device_remove_file(&wdata->hdev->dev, &dev_attr_devtype); device_remove_file(&wdata->hdev->dev, &dev_attr_extension); diff --git a/drivers/input/keyboard/locomokbd.c b/drivers/input/keyboard/locomokbd.c index dae053596572..f866c03b9d0e 100644 --- a/drivers/input/keyboard/locomokbd.c +++ b/drivers/input/keyboard/locomokbd.c @@ -310,7 +310,7 @@ static void locomokbd_remove(struct locomo_dev *dev) free_irq(dev->irq[0], locomokbd); - del_timer_sync(&locomokbd->timer); + timer_shutdown_sync(&locomokbd->timer); input_unregister_device(locomokbd->input); locomo_set_drvdata(dev, NULL); diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c index 57447d6c9007..24440b498645 100644 --- a/drivers/input/keyboard/omap-keypad.c +++ b/drivers/input/keyboard/omap-keypad.c @@ -296,7 +296,7 @@ static int omap_kp_remove(struct platform_device *pdev) omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT); free_irq(omap_kp->irq, omap_kp); - del_timer_sync(&omap_kp->timer); + timer_shutdown_sync(&omap_kp->timer); tasklet_kill(&kp_tasklet); /* unregister everything */ diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 4a6b33bbe7ea..989228b5a0a4 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -2970,7 +2970,7 @@ static void alps_disconnect(struct psmouse *psmouse) struct alps_data *priv = psmouse->private; psmouse_reset(psmouse); - del_timer_sync(&priv->timer); + timer_shutdown_sync(&priv->timer); if (priv->dev2) input_unregister_device(priv->dev2); if (!IS_ERR_OR_NULL(priv->dev3)) diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c index a77195e378b7..182e3f489c60 100644 --- a/drivers/isdn/mISDN/l1oip_core.c +++ b/drivers/isdn/mISDN/l1oip_core.c @@ -1236,8 +1236,8 @@ release_card(struct l1oip *hc) hc->shutdown = true; - del_timer_sync(&hc->keep_tl); - del_timer_sync(&hc->timeout_tl); + timer_shutdown_sync(&hc->keep_tl); + timer_shutdown_sync(&hc->timeout_tl); cancel_work_sync(&hc->workq); diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c index abdf36ac3bee..83d6b484d3c6 100644 --- a/drivers/isdn/mISDN/timerdev.c +++ b/drivers/isdn/mISDN/timerdev.c @@ -74,7 +74,7 @@ mISDN_close(struct inode *ino, struct file *filep) while (!list_empty(list)) { timer = list_first_entry(list, struct mISDNtimer, list); spin_unlock_irq(&dev->lock); - del_timer_sync(&timer->tl); + timer_shutdown_sync(&timer->tl); spin_lock_irq(&dev->lock); /* it might have been moved to ->expired */ list_del(&timer->list); @@ -204,7 +204,7 @@ misdn_del_timer(struct mISDNtimerdev *dev, int id) list_del_init(&timer->list); timer->id = -1; spin_unlock_irq(&dev->lock); - del_timer_sync(&timer->tl); + timer_shutdown_sync(&timer->tl); kfree(timer); return id; } diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c index 30bc9df03636..33cbf8413658 100644 --- a/drivers/leds/trigger/ledtrig-activity.c +++ b/drivers/leds/trigger/ledtrig-activity.c @@ -208,7 +208,7 @@ static void activity_deactivate(struct led_classdev *led_cdev) { struct activity_data *activity_data = led_get_trigger_data(led_cdev); - del_timer_sync(&activity_data->timer); + timer_shutdown_sync(&activity_data->timer); kfree(activity_data); clear_bit(LED_BLINK_SW, &led_cdev->work_flags); } diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c index 7fe0a05574d2..393b3ae832f4 100644 --- a/drivers/leds/trigger/ledtrig-heartbeat.c +++ b/drivers/leds/trigger/ledtrig-heartbeat.c @@ -151,7 +151,7 @@ static void heartbeat_trig_deactivate(struct led_classdev *led_cdev) struct heartbeat_trig_data *heartbeat_data = led_get_trigger_data(led_cdev); - del_timer_sync(&heartbeat_data->timer); + timer_shutdown_sync(&heartbeat_data->timer); kfree(heartbeat_data); clear_bit(LED_BLINK_SW, &led_cdev->work_flags); } diff --git a/drivers/leds/trigger/ledtrig-pattern.c b/drivers/leds/trigger/ledtrig-pattern.c index 43a265dc4696..e996d61e3bd6 100644 --- a/drivers/leds/trigger/ledtrig-pattern.c +++ b/drivers/leds/trigger/ledtrig-pattern.c @@ -430,7 +430,7 @@ static void pattern_trig_deactivate(struct led_classdev *led_cdev) if (led_cdev->pattern_clear) led_cdev->pattern_clear(led_cdev); - del_timer_sync(&data->timer); + timer_shutdown_sync(&data->timer); led_set_brightness(led_cdev, LED_OFF); kfree(data); diff --git a/drivers/leds/trigger/ledtrig-transient.c b/drivers/leds/trigger/ledtrig-transient.c index 80635183fac8..f111fa7635e5 100644 --- a/drivers/leds/trigger/ledtrig-transient.c +++ b/drivers/leds/trigger/ledtrig-transient.c @@ -180,7 +180,7 @@ static void transient_trig_deactivate(struct led_classdev *led_cdev) { struct transient_trig_data *transient_data = led_get_trigger_data(led_cdev); - del_timer_sync(&transient_data->timer); + timer_shutdown_sync(&transient_data->timer); led_set_brightness_nosleep(led_cdev, transient_data->restore_state); kfree(transient_data); } diff --git a/drivers/media/pci/ivtv/ivtv-driver.c b/drivers/media/pci/ivtv/ivtv-driver.c index f5846c22c799..ba503d820e48 100644 --- a/drivers/media/pci/ivtv/ivtv-driver.c +++ b/drivers/media/pci/ivtv/ivtv-driver.c @@ -1425,7 +1425,7 @@ static void ivtv_remove(struct pci_dev *pdev) /* Interrupts */ ivtv_set_irq_mask(itv, 0xffffffff); - del_timer_sync(&itv->dma_timer); + timer_shutdown_sync(&itv->dma_timer); /* Kill irq worker */ kthread_flush_worker(&itv->irq_worker); diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c index 62ff1fa1c753..75c89b07e86a 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c @@ -2605,10 +2605,10 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf, return hdw; fail: if (hdw) { - del_timer_sync(&hdw->quiescent_timer); - del_timer_sync(&hdw->decoder_stabilization_timer); - del_timer_sync(&hdw->encoder_run_timer); - del_timer_sync(&hdw->encoder_wait_timer); + timer_shutdown_sync(&hdw->quiescent_timer); + timer_shutdown_sync(&hdw->decoder_stabilization_timer); + timer_shutdown_sync(&hdw->encoder_run_timer); + timer_shutdown_sync(&hdw->encoder_wait_timer); flush_work(&hdw->workpoll); v4l2_device_unregister(&hdw->v4l2_dev); usb_free_urb(hdw->ctl_read_urb); @@ -2668,10 +2668,10 @@ void pvr2_hdw_destroy(struct pvr2_hdw *hdw) if (!hdw) return; pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_destroy: hdw=%p",hdw); flush_work(&hdw->workpoll); - del_timer_sync(&hdw->quiescent_timer); - del_timer_sync(&hdw->decoder_stabilization_timer); - del_timer_sync(&hdw->encoder_run_timer); - del_timer_sync(&hdw->encoder_wait_timer); + timer_shutdown_sync(&hdw->quiescent_timer); + timer_shutdown_sync(&hdw->decoder_stabilization_timer); + timer_shutdown_sync(&hdw->encoder_run_timer); + timer_shutdown_sync(&hdw->encoder_wait_timer); if (hdw->fw_buffer) { kfree(hdw->fw_buffer); hdw->fw_buffer = NULL; diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c index acf18e2251a5..3c2627712fe9 100644 --- a/drivers/media/usb/s2255/s2255drv.c +++ b/drivers/media/usb/s2255/s2255drv.c @@ -1487,7 +1487,7 @@ static void s2255_destroy(struct s2255_dev *dev) /* board shutdown stops the read pipe if it is running */ s2255_board_shutdown(dev); /* make sure firmware still not trying to load */ - del_timer_sync(&dev->timer); /* only started in .probe and .open */ + timer_shutdown_sync(&dev->timer); /* only started in .probe and .open */ if (dev->fw_data->fw_urb) { usb_kill_urb(dev->fw_data->fw_urb); usb_free_urb(dev->fw_data->fw_urb); @@ -2322,7 +2322,7 @@ static int s2255_probe(struct usb_interface *interface, errorFWDATA2: usb_free_urb(dev->fw_data->fw_urb); errorFWURB: - del_timer_sync(&dev->timer); + timer_shutdown_sync(&dev->timer); errorEP: usb_put_dev(dev->udev); errorUDEV: diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index b5dcd15ced36..54d5eed32743 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -15530,7 +15530,7 @@ static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw) err_switch_setup: i40e_reset_interrupt_capability(pf); - del_timer_sync(&pf->service_timer); + timer_shutdown_sync(&pf->service_timer); i40e_shutdown_adminq(hw); iounmap(hw->hw_addr); pci_disable_pcie_error_reporting(pf->pdev); @@ -16149,7 +16149,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) kfree(pf->vsi); err_switch_setup: i40e_reset_interrupt_capability(pf); - del_timer_sync(&pf->service_timer); + timer_shutdown_sync(&pf->service_timer); err_mac_addr: err_configure_lan_hmc: (void)i40e_shutdown_lan_hmc(hw); @@ -16211,7 +16211,7 @@ static void i40e_remove(struct pci_dev *pdev) set_bit(__I40E_SUSPENDED, pf->state); set_bit(__I40E_DOWN, pf->state); if (pf->service_timer.function) - del_timer_sync(&pf->service_timer); + timer_shutdown_sync(&pf->service_timer); if (pf->service_task.func) cancel_work_sync(&pf->service_task); diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index ab33ba1c3023..dc571e076180 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -5013,7 +5013,7 @@ static void sky2_remove(struct pci_dev *pdev) if (!hw) return; - del_timer_sync(&hw->watchdog_timer); + timer_shutdown_sync(&hw->watchdog_timer); cancel_work_sync(&hw->restart_work); for (i = hw->ports-1; i >= 0; --i) diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index acda6cbd0238..fe86fbd58586 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -524,7 +524,7 @@ static void vnet_port_remove(struct vio_dev *vdev) hlist_del_rcu(&port->hash); synchronize_rcu(); - del_timer_sync(&port->clean_timer); + timer_shutdown_sync(&port->clean_timer); sunvnet_port_rm_txq_common(port); netif_napi_del(&port->napi); sunvnet_port_free_tx_bufs_common(port); diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c index b3ae949e6f1c..673d3aa83792 100644 --- a/drivers/net/usb/sierra_net.c +++ b/drivers/net/usb/sierra_net.c @@ -759,7 +759,7 @@ static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf) dev_dbg(&dev->udev->dev, "%s", __func__); /* kill the timer and work */ - del_timer_sync(&priv->sync_timer); + timer_shutdown_sync(&priv->sync_timer); cancel_work_sync(&priv->sierra_net_kevent); /* tell modem we are going away */ diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c index f9f18ff451ea..7ea2631b8069 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c @@ -394,7 +394,7 @@ void brcmf_btcoex_detach(struct brcmf_cfg80211_info *cfg) if (cfg->btcoex->timer_on) { cfg->btcoex->timer_on = false; - del_timer_sync(&cfg->btcoex->timer); + timer_shutdown_sync(&cfg->btcoex->timer); } cancel_work_sync(&cfg->btcoex->work); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index 3237d4b528b5..119d83acafd1 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -371,7 +371,7 @@ void iwl_dbg_tlv_del_timers(struct iwl_trans *trans) struct iwl_dbg_tlv_timer_node *node, *tmp; list_for_each_entry_safe(node, tmp, timer_list, list) { - del_timer_sync(&node->timer); + timer_shutdown_sync(&node->timer); list_del(&node->list); kfree(node); } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index cbd8053a9e35..76ea44cebd90 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -2826,7 +2826,7 @@ int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, /* synchronize all rx queues so we can safely delete */ iwl_mvm_free_reorder(mvm, baid_data); - del_timer_sync(&baid_data->session_timer); + timer_shutdown_sync(&baid_data->session_timer); RCU_INIT_POINTER(mvm->baid_map[baid], NULL); kfree_rcu(baid_data, rcu_head); IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); diff --git a/drivers/net/wireless/intersil/hostap/hostap_ap.c b/drivers/net/wireless/intersil/hostap/hostap_ap.c index 462ccc7d7d1a..9b546a71e7a2 100644 --- a/drivers/net/wireless/intersil/hostap/hostap_ap.c +++ b/drivers/net/wireless/intersil/hostap/hostap_ap.c @@ -135,7 +135,7 @@ static void ap_free_sta(struct ap_data *ap, struct sta_info *sta) if (!sta->ap) kfree(sta->u.sta.challenge); - del_timer_sync(&sta->timer); + timer_shutdown_sync(&sta->timer); #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ kfree(sta); diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index da2e6557e684..ea22a08e6c08 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -123,7 +123,7 @@ static int mwifiex_unregister(struct mwifiex_adapter *adapter) if (adapter->if_ops.cleanup_if) adapter->if_ops.cleanup_if(adapter); - del_timer_sync(&adapter->cmd_timer); + timer_shutdown_sync(&adapter->cmd_timer); /* Free private structures */ for (i = 0; i < adapter->priv_num; i++) { diff --git a/drivers/net/wireless/microchip/wilc1000/hif.c b/drivers/net/wireless/microchip/wilc1000/hif.c index eb1d1ba3a443..131f9fd97c37 100644 --- a/drivers/net/wireless/microchip/wilc1000/hif.c +++ b/drivers/net/wireless/microchip/wilc1000/hif.c @@ -1520,10 +1520,10 @@ int wilc_deinit(struct wilc_vif *vif) mutex_lock(&vif->wilc->deinit_lock); - del_timer_sync(&hif_drv->scan_timer); - del_timer_sync(&hif_drv->connect_timer); + timer_shutdown_sync(&hif_drv->scan_timer); + timer_shutdown_sync(&hif_drv->connect_timer); del_timer_sync(&vif->periodic_rssi); - del_timer_sync(&hif_drv->remain_on_ch_timer); + timer_shutdown_sync(&hif_drv->remain_on_ch_timer); if (hif_drv->usr_scan_req.scan_result) { hif_drv->usr_scan_req.scan_result(SCAN_EVENT_ABORTED, NULL, diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c index d9f6367b9993..0a1d0b4e3bb8 100644 --- a/drivers/nfc/pn533/pn533.c +++ b/drivers/nfc/pn533/pn533.c @@ -2788,7 +2788,7 @@ void pn53x_common_clean(struct pn533 *priv) struct pn533_cmd *cmd, *n; /* delete the timer before cleanup the worker */ - del_timer_sync(&priv->listen_timer); + timer_shutdown_sync(&priv->listen_timer); flush_delayed_work(&priv->poll_work); destroy_workqueue(priv->wq); diff --git a/drivers/nfc/pn533/uart.c b/drivers/nfc/pn533/uart.c index 07596bf5f7d6..a556acdb947b 100644 --- a/drivers/nfc/pn533/uart.c +++ b/drivers/nfc/pn533/uart.c @@ -310,7 +310,7 @@ static void pn532_uart_remove(struct serdev_device *serdev) pn53x_unregister_nfc(pn532->priv); serdev_device_close(serdev); pn53x_common_clean(pn532->priv); - del_timer_sync(&pn532->cmd_timeout); + timer_shutdown_sync(&pn532->cmd_timeout); kfree_skb(pn532->recv_skb); kfree(pn532); } diff --git a/drivers/pcmcia/bcm63xx_pcmcia.c b/drivers/pcmcia/bcm63xx_pcmcia.c index bb06311d0b5f..dd3c26099048 100644 --- a/drivers/pcmcia/bcm63xx_pcmcia.c +++ b/drivers/pcmcia/bcm63xx_pcmcia.c @@ -443,7 +443,7 @@ static int bcm63xx_drv_pcmcia_remove(struct platform_device *pdev) struct resource *res; skt = platform_get_drvdata(pdev); - del_timer_sync(&skt->timer); + timer_shutdown_sync(&skt->timer); iounmap(skt->base); iounmap(skt->io_base); res = skt->reg_res; diff --git a/drivers/pcmcia/electra_cf.c b/drivers/pcmcia/electra_cf.c index 40a5cffe24a4..efc27bc15152 100644 --- a/drivers/pcmcia/electra_cf.c +++ b/drivers/pcmcia/electra_cf.c @@ -317,7 +317,7 @@ static int electra_cf_remove(struct platform_device *ofdev) cf->active = 0; pcmcia_unregister_socket(&cf->socket); free_irq(cf->irq, cf); - del_timer_sync(&cf->timer); + timer_shutdown_sync(&cf->timer); iounmap(cf->io_virt); iounmap(cf->mem_base); diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c index d3f827d4224a..e613818dc0bc 100644 --- a/drivers/pcmcia/omap_cf.c +++ b/drivers/pcmcia/omap_cf.c @@ -296,7 +296,7 @@ static int __exit omap_cf_remove(struct platform_device *pdev) cf->active = 0; pcmcia_unregister_socket(&cf->socket); - del_timer_sync(&cf->timer); + timer_shutdown_sync(&cf->timer); release_mem_region(cf->phys_cf, SZ_8K); free_irq(cf->irq, cf); kfree(cf); diff --git a/drivers/pcmcia/pd6729.c b/drivers/pcmcia/pd6729.c index f0af9985ca09..a0a2e7f18356 100644 --- a/drivers/pcmcia/pd6729.c +++ b/drivers/pcmcia/pd6729.c @@ -727,7 +727,7 @@ static int pd6729_pci_probe(struct pci_dev *dev, if (irq_mode == 1) free_irq(dev->irq, socket); else - del_timer_sync(&socket->poll_timer); + timer_shutdown_sync(&socket->poll_timer); err_out_free_res: pci_release_regions(dev); err_out_disable: @@ -754,7 +754,7 @@ static void pd6729_pci_remove(struct pci_dev *dev) if (irq_mode == 1) free_irq(dev->irq, socket); else - del_timer_sync(&socket->poll_timer); + timer_shutdown_sync(&socket->poll_timer); pci_release_regions(dev); pci_disable_device(dev); diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index 3966a6ceb1ac..1365eaa20ff4 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -814,7 +814,7 @@ static void yenta_close(struct pci_dev *dev) if (sock->cb_irq) free_irq(sock->cb_irq, sock); else - del_timer_sync(&sock->poll_timer); + timer_shutdown_sync(&sock->poll_timer); iounmap(sock->base); yenta_free_resources(sock); @@ -1285,7 +1285,7 @@ static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id) if (socket->cb_irq) free_irq(socket->cb_irq, socket); else - del_timer_sync(&socket->poll_timer); + timer_shutdown_sync(&socket->poll_timer); unmap: iounmap(socket->base); yenta_free_resources(socket); diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c index 00ccc41cef14..e4240aae5f9e 100644 --- a/drivers/scsi/qla2xxx/qla_edif.c +++ b/drivers/scsi/qla2xxx/qla_edif.c @@ -416,7 +416,7 @@ static void __qla2x00_release_all_sadb(struct scsi_qla_host *vha, */ if (edif_entry->delete_sa_index != INVALID_EDIF_SA_INDEX) { - del_timer(&edif_entry->timer); + timer_shutdown(&edif_entry->timer); /* build and send the aen */ fcport->edif.rx_sa_set = 1; @@ -2799,7 +2799,7 @@ qla28xx_sa_update_iocb_entry(scsi_qla_host_t *v, struct req_que *req, "%s: removing edif_entry %p, new sa_index: 0x%x\n", __func__, edif_entry, pkt->sa_index); qla_edif_list_delete_sa_index(sp->fcport, edif_entry); - del_timer(&edif_entry->timer); + timer_shutdown(&edif_entry->timer); ql_dbg(ql_dbg_edif, vha, 0x5033, "%s: releasing edif_entry %p, new sa_index: 0x%x\n", diff --git a/drivers/staging/media/atomisp/i2c/atomisp-lm3554.c b/drivers/staging/media/atomisp/i2c/atomisp-lm3554.c index 75d16b525294..c4ce4cd445d7 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-lm3554.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-lm3554.c @@ -921,7 +921,7 @@ static void lm3554_remove(struct i2c_client *client) atomisp_gmin_remove_subdev(sd); - del_timer_sync(&flash->flash_off_delay); + timer_shutdown_sync(&flash->flash_off_delay); lm3554_gpio_uninit(client); diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 5e516f5cac5a..6f48adecd1d4 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2098,7 +2098,7 @@ static void gsm_dlci_free(struct tty_port *port) { struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port); - del_timer_sync(&dlci->t1); + timer_shutdown_sync(&dlci->t1); dlci->gsm->dlci[dlci->addr] = NULL; kfifo_free(&dlci->fifo); while ((dlci->skb = skb_dequeue(&dlci->skb_list))) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index d2b2720db6ca..b6e70c5cfa17 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -1003,7 +1003,7 @@ static void sysrq_disconnect(struct input_handle *handle) input_close_device(handle); cancel_work_sync(&sysrq->reinject_work); - del_timer_sync(&sysrq->keyreset_timer); + timer_shutdown_sync(&sysrq->keyreset_timer); input_unregister_handle(handle); kfree(sysrq); } diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c index 931e6362a13d..c7e421b449f3 100644 --- a/drivers/usb/gadget/udc/m66592-udc.c +++ b/drivers/usb/gadget/udc/m66592-udc.c @@ -1519,7 +1519,7 @@ static int m66592_remove(struct platform_device *pdev) usb_del_gadget_udc(&m66592->gadget); - del_timer_sync(&m66592->timer); + timer_shutdown_sync(&m66592->timer); iounmap(m66592->reg); free_irq(platform_get_irq(pdev, 0), m66592); m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index f1a8d8343623..670e942fdaaa 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -1405,7 +1405,7 @@ static void garmin_port_remove(struct usb_serial_port *port) usb_kill_anchored_urbs(&garmin_data_p->write_urbs); usb_kill_urb(port->interrupt_in_urb); - del_timer_sync(&garmin_data_p->timer); + timer_shutdown_sync(&garmin_data_p->timer); kfree(garmin_data_p); } diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 6b12bb4648b8..73370eaae0ab 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1725,8 +1725,8 @@ static void mos7840_port_remove(struct usb_serial_port *port) /* Turn off LED */ mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); - del_timer_sync(&mos7840_port->led_timer1); - del_timer_sync(&mos7840_port->led_timer2); + timer_shutdown_sync(&mos7840_port->led_timer1); + timer_shutdown_sync(&mos7840_port->led_timer2); usb_kill_urb(mos7840_port->led_urb); usb_free_urb(mos7840_port->led_urb); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 7950904fbf04..f54ed936d800 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1225,7 +1225,7 @@ static void ext4_put_super(struct super_block *sb) } ext4_es_unregister_shrinker(sbi); - del_timer_sync(&sbi->s_err_report); + timer_shutdown_sync(&sbi->s_err_report); ext4_release_system_zone(sb); ext4_mb_release(sb); ext4_ext_release(sb); diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index b4cebad21b48..c50dc377da26 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -2752,7 +2752,7 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) down_write(&nilfs->ns_segctor_sem); - del_timer_sync(&sci->sc_timer); + timer_shutdown_sync(&sci->sc_timer); kfree(sci); } diff --git a/net/802/garp.c b/net/802/garp.c index fc9eb02a912f..87b2ddfe86ac 100644 --- a/net/802/garp.c +++ b/net/802/garp.c @@ -618,7 +618,7 @@ void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl /* Delete timer and generate a final TRANSMIT_PDU event to flush out * all pending messages before the applicant is gone. */ - del_timer_sync(&app->join_timer); + timer_shutdown_sync(&app->join_timer); spin_lock_bh(&app->lock); garp_gid_event(app, GARP_EVENT_TRANSMIT_PDU); diff --git a/net/802/mrp.c b/net/802/mrp.c index 155f74d8b14f..a069ed16fb99 100644 --- a/net/802/mrp.c +++ b/net/802/mrp.c @@ -903,8 +903,8 @@ void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *appl) /* Delete timer and generate a final TX event to flush out * all pending messages before the applicant is gone. */ - del_timer_sync(&app->join_timer); - del_timer_sync(&app->periodic_timer); + timer_shutdown_sync(&app->join_timer); + timer_shutdown_sync(&app->periodic_timer); spin_lock_bh(&app->lock); mrp_mad_event(app, MRP_EVENT_TX); diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index db4f2641d1cd..a68e7b8c47a8 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -605,7 +605,7 @@ static void br_multicast_destroy_mdb_entry(struct net_bridge_mcast_gc *gc) WARN_ON(!hlist_unhashed(&mp->mdb_node)); WARN_ON(mp->ports); - del_timer_sync(&mp->timer); + timer_shutdown_sync(&mp->timer); kfree_rcu(mp, rcu); } @@ -646,7 +646,7 @@ static void br_multicast_destroy_group_src(struct net_bridge_mcast_gc *gc) src = container_of(gc, struct net_bridge_group_src, mcast_gc); WARN_ON(!hlist_unhashed(&src->node)); - del_timer_sync(&src->timer); + timer_shutdown_sync(&src->timer); kfree_rcu(src, rcu); } @@ -670,8 +670,8 @@ static void br_multicast_destroy_port_group(struct net_bridge_mcast_gc *gc) WARN_ON(!hlist_unhashed(&pg->mglist)); WARN_ON(!hlist_empty(&pg->src_list)); - del_timer_sync(&pg->rexmit_timer); - del_timer_sync(&pg->timer); + timer_shutdown_sync(&pg->rexmit_timer); + timer_shutdown_sync(&pg->timer); kfree_rcu(pg, rcu); } diff --git a/net/bridge/br_multicast_eht.c b/net/bridge/br_multicast_eht.c index f91c071d1608..c126aa4e7551 100644 --- a/net/bridge/br_multicast_eht.c +++ b/net/bridge/br_multicast_eht.c @@ -142,7 +142,7 @@ static void br_multicast_destroy_eht_set_entry(struct net_bridge_mcast_gc *gc) set_h = container_of(gc, struct net_bridge_group_eht_set_entry, mcast_gc); WARN_ON(!RB_EMPTY_NODE(&set_h->rb_node)); - del_timer_sync(&set_h->timer); + timer_shutdown_sync(&set_h->timer); kfree(set_h); } @@ -154,7 +154,7 @@ static void br_multicast_destroy_eht_set(struct net_bridge_mcast_gc *gc) WARN_ON(!RB_EMPTY_NODE(&eht_set->rb_node)); WARN_ON(!RB_EMPTY_ROOT(&eht_set->entry_tree)); - del_timer_sync(&eht_set->timer); + timer_shutdown_sync(&eht_set->timer); kfree(eht_set); } diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 4fcbdd71c59f..fae9c4694186 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -208,7 +208,7 @@ void gen_kill_estimator(struct net_rate_estimator __rcu **rate_est) est = xchg((__force struct net_rate_estimator **)rate_est, NULL); if (est) { - del_timer_sync(&est->timer); + timer_shutdown_sync(&est->timer); kfree_rcu(est, rcu); } } diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index e04544ac4b45..dbaf4c33b155 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -412,7 +412,7 @@ static struct mr_table *ipmr_new_table(struct net *net, u32 id) static void ipmr_free_table(struct mr_table *mrt) { - del_timer_sync(&mrt->ipmr_expire_timer); + timer_shutdown_sync(&mrt->ipmr_expire_timer); mroute_clean_tables(mrt, MRT_FLUSH_VIFS | MRT_FLUSH_VIFS_STATIC | MRT_FLUSH_MFC | MRT_FLUSH_MFC_STATIC); rhltable_destroy(&mrt->mfc_hash); diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index facdc78a43e5..474b862039e0 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -392,7 +392,7 @@ static struct mr_table *ip6mr_new_table(struct net *net, u32 id) static void ip6mr_free_table(struct mr_table *mrt) { - del_timer_sync(&mrt->ipmr_expire_timer); + timer_shutdown_sync(&mrt->ipmr_expire_timer); mroute_clean_tables(mrt, MRT6_FLUSH_MIFS | MRT6_FLUSH_MIFS_STATIC | MRT6_FLUSH_MFC | MRT6_FLUSH_MFC_STATIC); rhltable_destroy(&mrt->mfc_hash); diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index acc1c299f1ae..ec72756075f5 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -512,7 +512,7 @@ static void mesh_path_free_rcu(struct mesh_table *tbl, mpath->flags |= MESH_PATH_RESOLVING | MESH_PATH_DELETED; mesh_gate_del(tbl, mpath); spin_unlock_bh(&mpath->state_lock); - del_timer_sync(&mpath->timer); + timer_shutdown_sync(&mpath->timer); atomic_dec(&sdata->u.mesh.mpaths); atomic_dec(&tbl->entries); mesh_path_flush_pending(mpath); diff --git a/net/netfilter/ipset/ip_set_list_set.c b/net/netfilter/ipset/ip_set_list_set.c index 5a67f7966574..e162636525cf 100644 --- a/net/netfilter/ipset/ip_set_list_set.c +++ b/net/netfilter/ipset/ip_set_list_set.c @@ -427,7 +427,7 @@ list_set_destroy(struct ip_set *set) struct set_elem *e, *n; if (SET_WITH_TIMEOUT(set)) - del_timer_sync(&map->gc); + timer_shutdown_sync(&map->gc); list_for_each_entry_safe(e, n, &map->members, list) { list_del(&e->list); diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c index 7ac7473e3804..1b87214d385e 100644 --- a/net/netfilter/ipvs/ip_vs_lblc.c +++ b/net/netfilter/ipvs/ip_vs_lblc.c @@ -384,7 +384,7 @@ static void ip_vs_lblc_done_svc(struct ip_vs_service *svc) struct ip_vs_lblc_table *tbl = svc->sched_data; /* remove periodic timer */ - del_timer_sync(&tbl->periodic_timer); + timer_shutdown_sync(&tbl->periodic_timer); /* got to clean up table entries here */ ip_vs_lblc_flush(svc); diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c index 77c323c36a88..ad8f5fea6d3a 100644 --- a/net/netfilter/ipvs/ip_vs_lblcr.c +++ b/net/netfilter/ipvs/ip_vs_lblcr.c @@ -547,7 +547,7 @@ static void ip_vs_lblcr_done_svc(struct ip_vs_service *svc) struct ip_vs_lblcr_table *tbl = svc->sched_data; /* remove periodic timer */ - del_timer_sync(&tbl->periodic_timer); + timer_shutdown_sync(&tbl->periodic_timer); /* got to clean up table entries here */ ip_vs_lblcr_flush(svc); diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c index 0f8bb0bf558f..8d36303f3935 100644 --- a/net/netfilter/xt_IDLETIMER.c +++ b/net/netfilter/xt_IDLETIMER.c @@ -413,7 +413,7 @@ static void idletimer_tg_destroy(const struct xt_tgdtor_param *par) pr_debug("deleting timer %s\n", info->label); list_del(&info->timer->entry); - del_timer_sync(&info->timer->timer); + timer_shutdown_sync(&info->timer->timer); cancel_work_sync(&info->timer->work); sysfs_remove_file(idletimer_tg_kobj, &info->timer->attr.attr); kfree(info->timer->attr.attr.name); @@ -441,7 +441,7 @@ static void idletimer_tg_destroy_v1(const struct xt_tgdtor_param *par) if (info->timer->timer_type & XT_IDLETIMER_ALARM) { alarm_cancel(&info->timer->alarm); } else { - del_timer_sync(&info->timer->timer); + timer_shutdown_sync(&info->timer->timer); } cancel_work_sync(&info->timer->work); sysfs_remove_file(idletimer_tg_kobj, &info->timer->attr.attr); diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c index 0371c387b0d1..66b0f941d8fb 100644 --- a/net/netfilter/xt_LED.c +++ b/net/netfilter/xt_LED.c @@ -166,7 +166,7 @@ static void led_tg_destroy(const struct xt_tgdtor_param *par) list_del(&ledinternal->list); - del_timer_sync(&ledinternal->timer); + timer_shutdown_sync(&ledinternal->timer); led_trigger_unregister(&ledinternal->netfilter_led_trigger); diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c index 22089e37e97f..307d6d480e78 100644 --- a/net/rxrpc/conn_object.c +++ b/net/rxrpc/conn_object.c @@ -358,7 +358,7 @@ static void rxrpc_destroy_connection(struct rcu_head *rcu) _net("DESTROY CONN %d", conn->debug_id); - del_timer_sync(&conn->timer); + timer_shutdown_sync(&conn->timer); rxrpc_purge_queue(&conn->rx_queue); conn->security->clear(conn); diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c index 014cd3de7b5d..cd90a3083b9f 100644 --- a/net/sched/cls_flow.c +++ b/net/sched/cls_flow.c @@ -367,7 +367,7 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = { static void __flow_destroy_filter(struct flow_filter *f) { - del_timer_sync(&f->perturb_timer); + timer_shutdown_sync(&f->perturb_timer); tcf_exts_destroy(&f->exts); tcf_em_tree_destroy(&f->ematches); tcf_exts_put_net(&f->exts); diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 149171774bc6..42663e240ec5 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -567,7 +567,7 @@ svc_destroy(struct kref *ref) struct svc_serv *serv = container_of(ref, struct svc_serv, sv_refcnt); dprintk("svc: svc_destroy(%s)\n", serv->sv_program->pg_name); - del_timer_sync(&serv->sv_temptimer); + timer_shutdown_sync(&serv->sv_temptimer); /* * The last user is gone and thus all sockets have to be destroyed to diff --git a/net/tipc/discover.c b/net/tipc/discover.c index e8630707901e..d9efbee90fb4 100644 --- a/net/tipc/discover.c +++ b/net/tipc/discover.c @@ -385,7 +385,7 @@ int tipc_disc_create(struct net *net, struct tipc_bearer *b, */ void tipc_disc_delete(struct tipc_discoverer *d) { - del_timer_sync(&d->timer); + timer_shutdown_sync(&d->timer); kfree_skb(d->skb); kfree(d); } diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c index 9618e4429f0f..77a3d016cade 100644 --- a/net/tipc/monitor.c +++ b/net/tipc/monitor.c @@ -700,7 +700,7 @@ void tipc_mon_delete(struct net *net, int bearer_id) } mon->self = NULL; write_unlock_bh(&mon->lock); - del_timer_sync(&mon->timer); + timer_shutdown_sync(&mon->timer); kfree(self->domain); kfree(self); kfree(mon); diff --git a/sound/i2c/other/ak4117.c b/sound/i2c/other/ak4117.c index 1bc43e927d82..640501bb3ca6 100644 --- a/sound/i2c/other/ak4117.c +++ b/sound/i2c/other/ak4117.c @@ -47,7 +47,7 @@ static void reg_dump(struct ak4117 *ak4117) static void snd_ak4117_free(struct ak4117 *chip) { - del_timer_sync(&chip->timer); + timer_shutdown_sync(&chip->timer); kfree(chip); } diff --git a/sound/synth/emux/emux.c b/sound/synth/emux/emux.c index a870759d179e..0006c3ddb51d 100644 --- a/sound/synth/emux/emux.c +++ b/sound/synth/emux/emux.c @@ -129,7 +129,7 @@ int snd_emux_free(struct snd_emux *emu) if (! emu) return -EINVAL; - del_timer_sync(&emu->tlist); + timer_shutdown_sync(&emu->tlist); snd_emux_proc_free(emu); snd_emux_delete_virmidi(emu);