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authorPeter Zijlstra <peterz@infradead.org>2016-11-14 19:29:48 +0300
committerIngo Molnar <mingo@kernel.org>2017-01-14 13:37:18 +0300
commit2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch)
tree4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /drivers/gpu/drm/drm_info.c
parent1e24edca0557dba6486d39d3c24c288475432bcf (diff)
downloadlinux-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.tar.xz
locking/atomic, kref: Add kref_read()
Since we need to change the implementation, stop exposing internals. Provide kref_read() to read the current reference count; typically used for debug messages. Kills two anti-patterns: atomic_read(&kref->refcount) kref->refcount.counter Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_info.c')
-rw-r--r--drivers/gpu/drm/drm_info.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c
index ffb2ab389d1d..6b68e9088436 100644
--- a/drivers/gpu/drm/drm_info.c
+++ b/drivers/gpu/drm/drm_info.c
@@ -118,7 +118,7 @@ static int drm_gem_one_name_info(int id, void *ptr, void *data)
seq_printf(m, "%6d %8zd %7d %8d\n",
obj->name, obj->size,
obj->handle_count,
- atomic_read(&obj->refcount.refcount));
+ kref_read(&obj->refcount));
return 0;
}