From 6ebd24b6bf106d3195bdbfeaa1ac77571e3dc670 Mon Sep 17 00:00:00 2001 From: Qiang Yu Date: Sat, 22 Feb 2020 10:42:06 +0800 Subject: [PATCH] drm/lima: save process info for debug usage When task fail, we can find its process with this information. Tested-by: Andreas Baierl Reviewed-by: Vasily Khoruzhick Signed-off-by: Qiang Yu Link: https://patchwork.freedesktop.org/patch/msgid/20200222024210.18697-2-yuq825@gmail.com --- drivers/gpu/drm/lima/lima_ctx.c | 3 +++ drivers/gpu/drm/lima/lima_ctx.h | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/lima/lima_ctx.c b/drivers/gpu/drm/lima/lima_ctx.c index 22fff6caa961..891d5cd5019a 100644 --- a/drivers/gpu/drm/lima/lima_ctx.c +++ b/drivers/gpu/drm/lima/lima_ctx.c @@ -27,6 +27,9 @@ int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id) if (err < 0) goto err_out0; + ctx->pid = task_pid_nr(current); + get_task_comm(ctx->pname, current); + return 0; err_out0: diff --git a/drivers/gpu/drm/lima/lima_ctx.h b/drivers/gpu/drm/lima/lima_ctx.h index 6154e5c9bfe4..74e2be09090f 100644 --- a/drivers/gpu/drm/lima/lima_ctx.h +++ b/drivers/gpu/drm/lima/lima_ctx.h @@ -5,6 +5,7 @@ #define __LIMA_CTX_H__ #include +#include #include "lima_device.h" @@ -13,6 +14,10 @@ struct lima_ctx { struct lima_device *dev; struct lima_sched_context context[lima_pipe_num]; atomic_t guilty; + + /* debug info */ + char pname[TASK_COMM_LEN]; + pid_t pid; }; struct lima_ctx_mgr {