From: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Konrad Dybcio <konrad.dybcio@somainline.org>, Mathieu Poirier <mathieu.poirier@linaro.org> Cc: <linux-arm-msm@vger.kernel.org>, <linux-remoteproc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Trilok Soni <quic_tsoni@quicinc.com>, "Satya Durga Srinivasu Prabhala" <quic_satyap@quicinc.com>, Rajendra Nayak <quic_rjendra@quicinc.com>, Elliot Berman <quic_eberman@quicinc.com>, "Guru Das Srinagesh" <quic_gurus@quicinc.com>, Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> Subject: [PATCH v1 1/3] remoteproc: qcom: q6v5: Send subdevice notifications before panic Date: Tue, 13 Sep 2022 11:35:42 -0700 [thread overview] Message-ID: <842a6b6307d26874959d29f2065aad544ff0b86c.1662995608.git.quic_gokukris@quicinc.com> (raw) In-Reply-To: <cover.1662995608.git.quic_gokukris@quicinc.com> Subdevice notifications after a remoteproc has crashed are useful to any clients that might want to preserve data pertaining to the driver after the remoteproc crashed. Sending subdevice notifications before triggering a kernel panic gives these drivers the time to do collect this information. Change-Id: Id6e55fb038b70f54ff5854d2adff72b74b6a9570 Signed-off-by: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> --- drivers/remoteproc/qcom_q6v5.c | 31 +++++++++++++++++++++++++++++++ drivers/remoteproc/qcom_q6v5.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c index 497acfb..89f5384 100644 --- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -15,6 +15,7 @@ #include <linux/soc/qcom/smem.h> #include <linux/soc/qcom/smem_state.h> #include <linux/remoteproc.h> +#include <linux/delay.h> #include "qcom_common.h" #include "qcom_q6v5.h" @@ -94,6 +95,29 @@ int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5) } EXPORT_SYMBOL_GPL(qcom_q6v5_unprepare); +static void qcom_q6v5_crash_handler_work(struct work_struct *work) +{ + struct qcom_q6v5 *q6v5 = container_of(work, struct qcom_q6v5, crash_handler); + struct rproc *rproc = q6v5->rproc; + struct rproc_subdev *subdev; + + mutex_lock(&rproc->lock); + + list_for_each_entry_reverse(subdev, &rproc->subdevs, node) { + if (subdev->stop) + subdev->stop(subdev, true); + } + + mutex_unlock(&rproc->lock); + + /* + * Temporary workaround until ramdump userspace application calls + * sync() and fclose() on attempting the dump. + */ + msleep(100); + panic("Panicking, remoteproc %s crashed\n", q6v5->rproc->name); +} + static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; @@ -113,6 +137,9 @@ static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) dev_err(q6v5->dev, "watchdog without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_WATCHDOG); return IRQ_HANDLED; @@ -134,6 +161,9 @@ static irqreturn_t q6v5_fatal_interrupt(int irq, void *data) dev_err(q6v5->dev, "fatal error without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_FATAL_ERROR); return IRQ_HANDLED; @@ -354,6 +384,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, if (IS_ERR(q6v5->path)) return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->path), "failed to acquire interconnect path\n"); + INIT_WORK(&q6v5->crash_handler, qcom_q6v5_crash_handler_work); return 0; } diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h index 5a859c4..b1654be 100644 --- a/drivers/remoteproc/qcom_q6v5.h +++ b/drivers/remoteproc/qcom_q6v5.h @@ -29,6 +29,8 @@ struct qcom_q6v5 { int handover_irq; int stop_irq; + struct work_struct crash_handler; + bool handover_issued; struct completion start_done; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@somainline.org>, Mathieu Poirier <mathieu.poirier@linaro.org> Cc: <linux-arm-msm@vger.kernel.org>, <linux-remoteproc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Trilok Soni <quic_tsoni@quicinc.com>, "Satya Durga Srinivasu Prabhala" <quic_satyap@quicinc.com>, Rajendra Nayak <quic_rjendra@quicinc.com>, Elliot Berman <quic_eberman@quicinc.com>, "Guru Das Srinagesh" <quic_gurus@quicinc.com>, Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> Subject: [PATCH v1 1/3] remoteproc: qcom: q6v5: Send subdevice notifications before panic Date: Mon, 19 Sep 2022 09:00:38 -0700 [thread overview] Message-ID: <842a6b6307d26874959d29f2065aad544ff0b86c.1662995608.git.quic_gokukris@quicinc.com> (raw) Message-ID: <20220919160038.BpIS2NZaQrI47MsQsuXtUhMXeHK8i_QzPnEO1X01qKQ@z> (raw) In-Reply-To: <cover.1662995608.git.quic_gokukris@quicinc.com> Subdevice notifications after a remoteproc has crashed are useful to any clients that might want to preserve data pertaining to the driver after the remoteproc crashed. Sending subdevice notifications before triggering a kernel panic gives these drivers the time to do collect this information. Change-Id: Id6e55fb038b70f54ff5854d2adff72b74b6a9570 Signed-off-by: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com> --- drivers/remoteproc/qcom_q6v5.c | 31 +++++++++++++++++++++++++++++++ drivers/remoteproc/qcom_q6v5.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c index 497acfb..89f5384 100644 --- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -15,6 +15,7 @@ #include <linux/soc/qcom/smem.h> #include <linux/soc/qcom/smem_state.h> #include <linux/remoteproc.h> +#include <linux/delay.h> #include "qcom_common.h" #include "qcom_q6v5.h" @@ -94,6 +95,29 @@ int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5) } EXPORT_SYMBOL_GPL(qcom_q6v5_unprepare); +static void qcom_q6v5_crash_handler_work(struct work_struct *work) +{ + struct qcom_q6v5 *q6v5 = container_of(work, struct qcom_q6v5, crash_handler); + struct rproc *rproc = q6v5->rproc; + struct rproc_subdev *subdev; + + mutex_lock(&rproc->lock); + + list_for_each_entry_reverse(subdev, &rproc->subdevs, node) { + if (subdev->stop) + subdev->stop(subdev, true); + } + + mutex_unlock(&rproc->lock); + + /* + * Temporary workaround until ramdump userspace application calls + * sync() and fclose() on attempting the dump. + */ + msleep(100); + panic("Panicking, remoteproc %s crashed\n", q6v5->rproc->name); +} + static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; @@ -113,6 +137,9 @@ static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) dev_err(q6v5->dev, "watchdog without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_WATCHDOG); return IRQ_HANDLED; @@ -134,6 +161,9 @@ static irqreturn_t q6v5_fatal_interrupt(int irq, void *data) dev_err(q6v5->dev, "fatal error without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_FATAL_ERROR); return IRQ_HANDLED; @@ -354,6 +384,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, if (IS_ERR(q6v5->path)) return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->path), "failed to acquire interconnect path\n"); + INIT_WORK(&q6v5->crash_handler, qcom_q6v5_crash_handler_work); return 0; } diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h index 5a859c4..b1654be 100644 --- a/drivers/remoteproc/qcom_q6v5.h +++ b/drivers/remoteproc/qcom_q6v5.h @@ -29,6 +29,8 @@ struct qcom_q6v5 { int handover_irq; int stop_irq; + struct work_struct crash_handler; + bool handover_issued; struct completion start_done; -- 2.7.4
next prev parent reply other threads:[~2022-09-13 18:52 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-13 18:35 [PATCH v1 0/3] Handle coprocessor crash Gokul krishna Krishnakumar 2022-09-13 18:35 ` Gokul krishna Krishnakumar [this message] 2022-09-19 16:00 ` [PATCH v1 1/3] remoteproc: qcom: q6v5: Send subdevice notifications before panic Gokul krishna Krishnakumar 2022-09-23 7:03 ` Peng Fan 2022-12-28 16:20 ` Bjorn Andersson 2022-09-13 18:35 ` [PATCH v1 2/3] remoteproc: qcom: q6v5: Do not report crash if SSR is disabled Gokul krishna Krishnakumar 2022-09-19 16:00 ` Gokul krishna Krishnakumar 2022-09-23 7:05 ` Peng Fan 2022-12-28 16:22 ` Bjorn Andersson 2022-09-13 18:35 ` [PATCH v1 3/3] remoteproc: qcom: q6v5: Avoid setting smem bit in case of crash shutdown Gokul krishna Krishnakumar 2022-09-19 16:00 ` Gokul krishna Krishnakumar 2022-09-19 16:00 ` [PATCH v1 0/3] Handle coprocessor crash Gokul krishna Krishnakumar 2022-12-28 18:18 ` (subset) " Bjorn Andersson
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