drm/msm/rd: allow adding addition msg to top of dump

For faults or hangs, it is nice to be able to include a bit more
information.

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index b01bd7f..a007bbf 100644 (file)
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -299,7 +299,8 @@ void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
 int msm_debugfs_late_init(struct drm_device *dev);
 int msm_rd_debugfs_init(struct drm_minor *minor);
 void msm_rd_debugfs_cleanup(struct msm_drm_private *priv);
-void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit);
+void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit,
+               const char *fmt, ...);
 int msm_perf_debugfs_init(struct drm_minor *minor);
 void msm_perf_debugfs_cleanup(struct msm_drm_private *priv);
 #else

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 7fc6f68..4dd0c91 100644 (file)
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -557,7 +557,7 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 
        list_add_tail(&submit->node, &ring->submits);
 
-       msm_rd_dump_submit(priv->rd, submit);
+       msm_rd_dump_submit(priv->rd, submit, NULL);
 
        update_sw_cntrs(gpu);
 

diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index 0fac6ea..96d678b 100644 (file)
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -338,11 +338,12 @@ static void snapshot_buf(struct msm_rd_state *rd,
 }
 
 /* called under struct_mutex */
-void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit)
+void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit,
+               const char *fmt, ...)
 {
        struct drm_device *dev = submit->dev;
        struct task_struct *task;
-       char msg[128];
+       char msg[256];
        int i, n;
 
        if (!rd->open)
@@ -353,6 +354,16 @@ void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit)
         */
        WARN_ON(!mutex_is_locked(&dev->struct_mutex));
 
+       if (fmt) {
+               va_list args;
+
+               va_start(args, fmt);
+               n = vsnprintf(msg, sizeof(msg), fmt, args);
+               va_end(args);
+
+               rd_write_section(rd, RD_CMD, msg, ALIGN(n, 4));
+       }
+
        rcu_read_lock();
        task = pid_task(submit->pid, PIDTYPE_PID);
        if (task) {