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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56212C531C9 for ; Sat, 25 Jul 2026 11:37:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=A5uU7iKfz5gz3ypg/qQCTM/sjikw2S1CTGrsZ5Nq1Oo=; b=2+H6bQ3eoowfDJpfJhdYqt8uRL cKxux/hLJEGKmj8/AQ0fs8fDpA8m5AlMw8ctRVYxqXEK2j+vV0GowW0hSOMO2SxI/XGCj830l67Yi /6EZLG7FFVKzgu2vFOAFiESAyQHtVG8weNYl8zDyJh/QaDQ2p5fWAAyfDrRHDdwmiGC1KF/Rs16oY /o6FREPzka0NsszI+I2DqqOdoYxlO6rScYblRH6rOdbDiPyXhv1nSChtdHe88zC0bfixeCLakCDjh ej95r2b2liuKoDxtG9uUmnHMUqGEDYcVQCrZtH/5qzf1vG4iDlJfmuK8etCXfNl1z4hQFJ2uRUJeL QNn71Qfg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnah6-00000000IQv-0Fyc; Sat, 25 Jul 2026 11:37:28 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnagt-00000000IHJ-0uAE for linux-arm-kernel@lists.infradead.org; Sat, 25 Jul 2026 11:37:16 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EC44B1476; Sat, 25 Jul 2026 04:37:09 -0700 (PDT) Received: from e129823.cambridge.arm.com (e129823.arm.com [10.2.213.3]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 88D033F86F; Sat, 25 Jul 2026 04:37:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1784979434; bh=SYHzL4tVfIQbiHjg6OKBP+pA+cS5EYqqeFVJOUPv52E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MfQ1fkEuj5GzgbhZzUVmNhQhIOHHmUjiqQZ/OByCZmp+lDp7UXYqjYPEi6cHlNUMo JQ13tse32tOiQSO+ejwG5amA7XtpkUjWaxsTRgwonc82gvOfYPNsNrtPsgzZMFmg9J XkkQhWlPrlE8sYo4qPfKnBDZFGWg4W/tZPXcbbh0= From: Yeoreum Yun To: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: suzuki.poulose@arm.com, mike.leach@arm.com, james.clark@linaro.org, alexander.shishkin@linux.intel.com, leo.yan@arm.com, jie.gan@oss.qualcomm.com, Yeoreum Yun Subject: [PATCH v9 07/13] coresight: etm3x: change drvdata->spinlock type to raw_spin_lock_t Date: Sat, 25 Jul 2026 12:36:39 +0100 Message-ID: <20260725113645.57519-8-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260725113645.57519-1-yeoreum.yun@arm.com> References: <20260725113645.57519-1-yeoreum.yun@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260725_043715_526763_0F5AF4B3 X-CRM114-Status: GOOD ( 14.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org etm_starting_cpu()/etm_dying_cpu() are called in not sleepable context. This poses an issue in PREEMPT_RT kernel where spinlock_t is sleepable. To address this, change etm3's drvdata->spinlock type to raw_spin_lock_t. This will be good to align with etm4x. Reviewed-by: Jie Gan Signed-off-by: Yeoreum Yun --- drivers/hwtracing/coresight/coresight-etm.h | 2 +- .../coresight/coresight-etm3x-core.c | 2 +- .../coresight/coresight-etm3x-sysfs.c | 130 +++++++++--------- 3 files changed, 67 insertions(+), 67 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm.h b/drivers/hwtracing/coresight/coresight-etm.h index f3796162168d..bc8909a905c7 100644 --- a/drivers/hwtracing/coresight/coresight-etm.h +++ b/drivers/hwtracing/coresight/coresight-etm.h @@ -233,7 +233,7 @@ struct etm_drvdata { struct csdev_access csa; struct clk *atclk; struct coresight_device *csdev; - spinlock_t spinlock; + raw_spinlock_t spinlock; int cpu; int port_size; u8 arch; diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index 93dc98145b66..7a1e183c0b48 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -811,7 +811,7 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id) desc.access = drvdata->csa = CSDEV_ACCESS_IOMEM(base); - spin_lock_init(&drvdata->spinlock); + raw_spin_lock_init(&drvdata->spinlock); drvdata->atclk = devm_clk_get_optional_enabled(dev, "atclk"); if (IS_ERR(drvdata->atclk)) diff --git a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c index 762109307b86..42b12c33516b 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c @@ -49,13 +49,13 @@ static ssize_t etmsr_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); pm_runtime_get_sync(dev->parent); - spin_lock_irqsave(&drvdata->spinlock, flags); + raw_spin_lock_irqsave(&drvdata->spinlock, flags); CS_UNLOCK(drvdata->csa.base); val = etm_readl(drvdata, ETMSR); CS_LOCK(drvdata->csa.base); - spin_unlock_irqrestore(&drvdata->spinlock, flags); + raw_spin_unlock_irqrestore(&drvdata->spinlock, flags); pm_runtime_put(dev->parent); return sprintf(buf, "%#lx\n", val); @@ -76,7 +76,7 @@ static ssize_t reset_store(struct device *dev, return ret; if (val) { - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); memset(config, 0, sizeof(struct etm_config)); config->mode = ETM_MODE_EXCLUDE; config->trigger_event = ETM_DEFAULT_EVENT_VAL; @@ -86,7 +86,7 @@ static ssize_t reset_store(struct device *dev, etm_set_default(config); etm_release_trace_id(drvdata); - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); } return size; @@ -117,7 +117,7 @@ static ssize_t mode_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->mode = val & ETM_MODE_ALL; if (config->mode & ETM_MODE_EXCLUDE) @@ -168,12 +168,12 @@ static ssize_t mode_store(struct device *dev, if (config->mode & (ETM_MODE_EXCL_KERN | ETM_MODE_EXCL_USER)) etm_config_trace_mode(config); - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; err_unlock: - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return ret; } static DEVICE_ATTR_RW(mode); @@ -299,9 +299,9 @@ static ssize_t addr_idx_store(struct device *dev, * Use spinlock to ensure index doesn't change while it gets * dereferenced multiple times within a spinlock block elsewhere. */ - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->addr_idx = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -315,16 +315,16 @@ static ssize_t addr_single_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EINVAL; } val = config->addr_val[idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -343,17 +343,17 @@ static ssize_t addr_single_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EINVAL; } config->addr_val[idx] = val; config->addr_type[idx] = ETM_ADDR_TYPE_SINGLE; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -367,23 +367,23 @@ static ssize_t addr_range_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (idx % 2 != 0) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE && config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) || (config->addr_type[idx] == ETM_ADDR_TYPE_RANGE && config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } val1 = config->addr_val[idx]; val2 = config->addr_val[idx + 1]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx %#lx\n", val1, val2); } @@ -403,17 +403,17 @@ static ssize_t addr_range_store(struct device *dev, if (val1 > val2) return -EINVAL; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (idx % 2 != 0) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE && config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) || (config->addr_type[idx] == ETM_ADDR_TYPE_RANGE && config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } @@ -422,7 +422,7 @@ static ssize_t addr_range_store(struct device *dev, config->addr_val[idx + 1] = val2; config->addr_type[idx + 1] = ETM_ADDR_TYPE_RANGE; config->enable_ctrl1 |= (1 << (idx/2)); - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -436,16 +436,16 @@ static ssize_t addr_start_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_START)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } val = config->addr_val[idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -464,11 +464,11 @@ static ssize_t addr_start_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_START)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } @@ -476,7 +476,7 @@ static ssize_t addr_start_store(struct device *dev, config->addr_type[idx] = ETM_ADDR_TYPE_START; config->startstop_ctrl |= (1 << idx); config->enable_ctrl1 |= ETMTECR1_START_STOP; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -490,16 +490,16 @@ static ssize_t addr_stop_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_STOP)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } val = config->addr_val[idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -518,11 +518,11 @@ static ssize_t addr_stop_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); idx = config->addr_idx; if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE || config->addr_type[idx] == ETM_ADDR_TYPE_STOP)) { - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return -EPERM; } @@ -530,7 +530,7 @@ static ssize_t addr_stop_store(struct device *dev, config->addr_type[idx] = ETM_ADDR_TYPE_STOP; config->startstop_ctrl |= (1 << (idx + 16)); config->enable_ctrl1 |= ETMTECR1_START_STOP; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -543,9 +543,9 @@ static ssize_t addr_acctype_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); val = config->addr_acctype[config->addr_idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -563,9 +563,9 @@ static ssize_t addr_acctype_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->addr_acctype[config->addr_idx] = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -601,9 +601,9 @@ static ssize_t cntr_idx_store(struct device *dev, * Use spinlock to ensure index doesn't change while it gets * dereferenced multiple times within a spinlock block elsewhere. */ - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->cntr_idx = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -616,9 +616,9 @@ static ssize_t cntr_rld_val_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); val = config->cntr_rld_val[config->cntr_idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -636,9 +636,9 @@ static ssize_t cntr_rld_val_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->cntr_rld_val[config->cntr_idx] = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -651,9 +651,9 @@ static ssize_t cntr_event_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); val = config->cntr_event[config->cntr_idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -671,9 +671,9 @@ static ssize_t cntr_event_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->cntr_event[config->cntr_idx] = val & ETM_EVENT_MASK; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -686,9 +686,9 @@ static ssize_t cntr_rld_event_show(struct device *dev, struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etm_config *config = &drvdata->config; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); val = config->cntr_rld_event[config->cntr_idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -706,9 +706,9 @@ static ssize_t cntr_rld_event_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->cntr_rld_event[config->cntr_idx] = val & ETM_EVENT_MASK; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -723,11 +723,11 @@ static ssize_t cntr_val_show(struct device *dev, struct etm_config *config = &drvdata->config; if (!coresight_get_mode(drvdata->csdev)) { - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); for (i = 0; i < drvdata->nr_cntr; i++) ret += sprintf(buf, "counter %d: %x\n", i, config->cntr_val[i]); - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return ret; } @@ -752,9 +752,9 @@ static ssize_t cntr_val_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->cntr_val[config->cntr_idx] = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -947,13 +947,13 @@ static ssize_t seq_curr_state_show(struct device *dev, } pm_runtime_get_sync(dev->parent); - spin_lock_irqsave(&drvdata->spinlock, flags); + raw_spin_lock_irqsave(&drvdata->spinlock, flags); CS_UNLOCK(drvdata->csa.base); val = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK); CS_LOCK(drvdata->csa.base); - spin_unlock_irqrestore(&drvdata->spinlock, flags); + raw_spin_unlock_irqrestore(&drvdata->spinlock, flags); pm_runtime_put(dev->parent); out: return sprintf(buf, "%#lx\n", val); @@ -1012,9 +1012,9 @@ static ssize_t ctxid_idx_store(struct device *dev, * Use spinlock to ensure index doesn't change while it gets * dereferenced multiple times within a spinlock block elsewhere. */ - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->ctxid_idx = val; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } @@ -1034,9 +1034,9 @@ static ssize_t ctxid_pid_show(struct device *dev, if (task_active_pid_ns(current) != &init_pid_ns) return -EINVAL; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); val = config->ctxid_pid[config->ctxid_idx]; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return sprintf(buf, "%#lx\n", val); } @@ -1066,9 +1066,9 @@ static ssize_t ctxid_pid_store(struct device *dev, if (ret) return ret; - spin_lock(&drvdata->spinlock); + raw_spin_lock(&drvdata->spinlock); config->ctxid_pid[config->ctxid_idx] = pid; - spin_unlock(&drvdata->spinlock); + raw_spin_unlock(&drvdata->spinlock); return size; } -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}