| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 1 Dec 2017 15:50:58 +0100
From: Arnaud Pouliquen <arnaud.pouliquen@...com>
To: Bjorn Andersson <bjorn.andersson@...aro.org>,
Andy Gross <andy.gross@...aro.org>,
Ohad Ben-Cohen <ohad@...ery.com>
CC: Arun Kumar Neelakantam <aneela@...eaurora.org>,
Chris Lew <clew@...eaurora.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-soc@...r.kernel.org>, <linux-remoteproc@...r.kernel.org>
Subject: Re: [PATCH v4 3/5] remoteproc: Pass type of shutdown to subdev remove
hello Bjorn,
Sorry for these late remarks/questions
On 11/30/2017 02:16 AM, Bjorn Andersson wrote:
> remoteproc instances can be stopped either by invoking shutdown or by an
> attempt to recover from a crash. For some subdev types it's expected to
> clean up gracefully during a shutdown, but are unable to do so during a
> crash - so pass this information to the subdev remove functions.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>
> Changes since v3:
> - None
>
> Changes since v2:
> - None
>
> Changes since v1:
> - New patch
>
> drivers/remoteproc/qcom_common.c | 6 +++---
> drivers/remoteproc/remoteproc_core.c | 18 +++++++++---------
> include/linux/remoteproc.h | 4 ++--
> 3 files changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
> index d487040b528b..7a862d41503e 100644
> --- a/drivers/remoteproc/qcom_common.c
> +++ b/drivers/remoteproc/qcom_common.c
> @@ -60,7 +60,7 @@ static int glink_subdev_probe(struct rproc_subdev *subdev)
> return IS_ERR(glink->edge) ? PTR_ERR(glink->edge) : 0;
> }
>
> -static void glink_subdev_remove(struct rproc_subdev *subdev)
> +static void glink_subdev_remove(struct rproc_subdev *subdev, bool graceful)
> {
> struct qcom_rproc_glink *glink = to_glink_subdev(subdev);
>
> @@ -107,7 +107,7 @@ static int smd_subdev_probe(struct rproc_subdev *subdev)
> return PTR_ERR_OR_ZERO(smd->edge);
> }
>
> -static void smd_subdev_remove(struct rproc_subdev *subdev)
> +static void smd_subdev_remove(struct rproc_subdev *subdev, bool graceful)
> {
> struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);
>
> @@ -176,7 +176,7 @@ static int ssr_notify_start(struct rproc_subdev *subdev)
> return 0;
> }
>
> -static void ssr_notify_stop(struct rproc_subdev *subdev)
> +static void ssr_notify_stop(struct rproc_subdev *subdev, bool graceful)
> {
> struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev);
>
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index eab14b414bf0..3146e965ca47 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -307,7 +307,7 @@ static int rproc_vdev_do_probe(struct rproc_subdev *subdev)
> return rproc_add_virtio_dev(rvdev, rvdev->id);
> }
>
> -static void rproc_vdev_do_remove(struct rproc_subdev *subdev)
> +static void rproc_vdev_do_remove(struct rproc_subdev *subdev, bool graceful)
> {
> struct rproc_vdev *rvdev = container_of(subdev, struct rproc_vdev, subdev);
>
> @@ -785,17 +785,17 @@ static int rproc_probe_subdevices(struct rproc *rproc)
>
> unroll_registration:
> list_for_each_entry_continue_reverse(subdev, &rproc->subdevs, node)
> - subdev->remove(subdev);
> + subdev->remove(subdev, false);
Why do you need to do a non graceful remove in this case? This could
lead to side effect like memory leakage...
>
> return ret;
> }
>
> -static void rproc_remove_subdevices(struct rproc *rproc)
> +static void rproc_remove_subdevices(struct rproc *rproc, bool graceful)
> {
> struct rproc_subdev *subdev;
>
> list_for_each_entry_reverse(subdev, &rproc->subdevs, node)
> - subdev->remove(subdev);
> + subdev->remove(subdev, graceful);
> }
>
> /**
> @@ -1013,13 +1013,13 @@ static int rproc_trigger_auto_boot(struct rproc *rproc)
> return ret;
> }
>
> -static int rproc_stop(struct rproc *rproc)
> +static int rproc_stop(struct rproc *rproc, bool graceful)
> {
> struct device *dev = &rproc->dev;
> int ret;
>
> /* remove any subdevices for the remote processor */
> - rproc_remove_subdevices(rproc);
> + rproc_remove_subdevices(rproc, graceful);
>
> /* power off the remote processor */
> ret = rproc->ops->stop(rproc);
> @@ -1063,7 +1063,7 @@ int rproc_trigger_recovery(struct rproc *rproc)
> if (ret)
> return ret;
>
> - ret = rproc_stop(rproc);
> + ret = rproc_stop(rproc, false);
> if (ret)
> goto unlock_mutex;
>
> @@ -1216,7 +1216,7 @@ void rproc_shutdown(struct rproc *rproc)
> if (!atomic_dec_and_test(&rproc->power))
> goto out;
>
> - ret = rproc_stop(rproc);
> + ret = rproc_stop(rproc, true);
> if (ret) {
> atomic_inc(&rproc->power);
> goto out;
> @@ -1550,7 +1550,7 @@ EXPORT_SYMBOL(rproc_del);
> void rproc_add_subdev(struct rproc *rproc,
> struct rproc_subdev *subdev,
> int (*probe)(struct rproc_subdev *subdev),
> - void (*remove)(struct rproc_subdev *subdev))
> + void (*remove)(struct rproc_subdev *subdev, bool graceful))
> {
> subdev->probe = probe;
> subdev->remove = remove;
> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> index 44e630eb3d94..20a9467744ea 100644
> --- a/include/linux/remoteproc.h
> +++ b/include/linux/remoteproc.h
> @@ -456,7 +456,7 @@ struct rproc_subdev {
> struct list_head node;
>
> int (*probe)(struct rproc_subdev *subdev);
> - void (*remove)(struct rproc_subdev *subdev);
> + void (*remove)(struct rproc_subdev *subdev, bool graceful);
What about adding a new ops instead of a parameter, like a recovery
callback?
Regard
Arnaud
> };
>
> /* we currently support only two vrings per rvdev */
> @@ -539,7 +539,7 @@ static inline struct rproc *vdev_to_rproc(struct virtio_device *vdev)
> void rproc_add_subdev(struct rproc *rproc,
> struct rproc_subdev *subdev,
> int (*probe)(struct rproc_subdev *subdev),
> - void (*remove)(struct rproc_subdev *subdev));
> + void (*remove)(struct rproc_subdev *subdev, bool graceful));
>
> void rproc_remove_subdev(struct rproc *rproc, struct rproc_subdev *subdev);
>
>
Powered by blists - more mailing lists