From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sibi Sankar Subject: [PATCH v5 2/5] remoteproc: Add mechanism for custom dump function assignment Date: Wed, 17 Oct 2018 19:25:24 +0530 Message-ID: <20181017135527.30592-3-sibis@codeaurora.org> References: <20181017135527.30592-1-sibis@codeaurora.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20181017135527.30592-1-sibis@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: bjorn.andersson@linaro.org, ohad@wizery.com Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, tsoni@codeaurora.org, sricharan@codeaurora.org, akdwived@codeaurora.org, kyan@codeaurora.org, Sibi Sankar List-Id: linux-arm-msm@vger.kernel.org This patch adds a mechanism for assigning each rproc dump segment with a custom dump function and private data. The dump function is to be called for each rproc segment during coredump if assigned. Signed-off-by: Sibi Sankar --- drivers/remoteproc/remoteproc_core.c | 39 ++++++++++++++++++++++++++++ include/linux/remoteproc.h | 5 ++++ 2 files changed, 44 insertions(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index afa4274b6ccd..076579f44c3a 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1121,6 +1121,45 @@ int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size) } EXPORT_SYMBOL(rproc_coredump_add_segment); +/** + * rproc_coredump_add_custom_segment() - add segment of device memory to + * coredump and extend it with custom + * dump function + * @rproc: handle of a remote processor + * @da: device address + * @size: size of segment + * @priv: private data + * @dumpfn: custom dump function called for each segment during coredump + * + * Add device memory to the list of segments to be included in the coredump + * and associate the segment with the given custom dump function and private + * data. + * + * Return: 0 on success, negative errno on error. + */ +int rproc_coredump_add_custom_segment(struct rproc *rproc, + dma_addr_t da, size_t size, void *priv, + void (*dumpfn)(struct rproc *rproc, + struct rproc_dump_segment *segment, + void *dest)) +{ + struct rproc_dump_segment *segment; + + segment = kzalloc(sizeof(*segment), GFP_KERNEL); + if (!segment) + return -ENOMEM; + + segment->da = da; + segment->size = size; + segment->priv = priv; + segment->dump = dumpfn; + + list_add_tail(&segment->node, &rproc->dump_segments); + + return 0; +} +EXPORT_SYMBOL(rproc_coredump_add_custom_segment); + /** * rproc_coredump() - perform coredump * @rproc: rproc handle diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index 2a93e102d2ad..0003b23ab117 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -563,6 +563,11 @@ int rproc_boot(struct rproc *rproc); void rproc_shutdown(struct rproc *rproc); void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type); int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size); +int rproc_coredump_add_custom_segment(struct rproc *rproc, + dma_addr_t da, size_t size, void *priv, + void (*dumpfn)(struct rproc *rproc, + struct rproc_dump_segment *segment, + void *dest)); static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev) { -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project