summaryrefslogtreecommitdiffstats
path: root/include/drm/drmP.h
diff options
context:
space:
mode:
authorMarcin Slusarz <marcin.slusarz@gmail.com>2011-11-09 22:20:35 +0100
committerDave Airlie <airlied@redhat.com>2011-11-11 11:05:19 +0000
commitb3e067c0b276197b59046d7095b01b99f98b2821 (patch)
tree90a260a3a560e0f06398db84ebe3feb27d569128 /include/drm/drmP.h
parent3b9832f662d195755e7308f92368d44458268457 (diff)
downloadop-kernel-dev-b3e067c0b276197b59046d7095b01b99f98b2821.zip
op-kernel-dev-b3e067c0b276197b59046d7095b01b99f98b2821.tar.gz
drm: serialize access to list of debugfs files
Nouveau, when configured with debugfs, creates debugfs files for every channel, so structure holding list of files needs to be protected from simultaneous changes by multiple threads. Without this patch it's possible to hit kernel oops in drm_debugfs_remove_files just by running a couple of xterms with looped glxinfo. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drmP.h')
-rw-r--r--include/drm/drmP.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index cf39949..1f9e951 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -990,7 +990,9 @@ struct drm_minor {
struct proc_dir_entry *proc_root; /**< proc directory entry */
struct drm_info_node proc_nodes;
struct dentry *debugfs_root;
- struct drm_info_node debugfs_nodes;
+
+ struct list_head debugfs_list;
+ struct mutex debugfs_lock; /* Protects debugfs_list. */
struct drm_master *master; /* currently active master for this node */
struct list_head master_list;
OpenPOWER on IntegriCloud