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author | Peter Zijlstra <peterz@infradead.org> | 2016-11-14 17:29:48 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 11:37:18 +0100 |
commit | 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch) | |
tree | 4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /drivers/gpu/drm/drm_info.c | |
parent | 1e24edca0557dba6486d39d3c24c288475432bcf (diff) | |
download | op-kernel-dev-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.zip op-kernel-dev-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.tar.gz |
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.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c index ffb2ab3..6b68e90 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; } |