Messages in this thread | | | Date | Wed, 16 Nov 2016 17:45:22 +0800 | From | kbuild test robot <> | Subject | [tip:locking/core 12/12] drivers/gpu/drm/i915/i915_gem_shrinker.c:230:2: warning: 'mutex_trylock_recursive' is deprecated |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core head: 0f5225b024d4bffd682aab008c35862e8fdc1865 commit: 0f5225b024d4bffd682aab008c35862e8fdc1865 [12/12] locking/mutex, drm: Introduce mutex_trylock_recursive() config: i386-randconfig-a0-201646 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout 0f5225b024d4bffd682aab008c35862e8fdc1865 # save the attached .config to linux build tree make ARCH=i386
All warnings (new ones prefixed by >>):
drivers/gpu/drm/i915/i915_gem_shrinker.c: In function 'i915_gem_shrinker_lock': >> drivers/gpu/drm/i915/i915_gem_shrinker.c:230:2: warning: 'mutex_trylock_recursive' is deprecated [-Wdeprecated-declarations] switch (mutex_trylock_recursive(&dev->struct_mutex)) { ^~~~~~ In file included from arch/x86/include/asm/mmu.h:5:0, from include/linux/mm_types.h:17, from include/linux/sched.h:27, from include/linux/oom.h:5, from drivers/gpu/drm/i915/i915_gem_shrinker.c:25: include/linux/mutex.h:215:1: note: declared here mutex_trylock_recursive(struct mutex *lock) ^~~~~~~~~~~~~~~~~~~~~~~
vim +/mutex_trylock_recursive +230 drivers/gpu/drm/i915/i915_gem_shrinker.c
214 */ 215 unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv) 216 { 217 unsigned long freed; 218 219 freed = i915_gem_shrink(dev_priv, -1UL, 220 I915_SHRINK_BOUND | 221 I915_SHRINK_UNBOUND | 222 I915_SHRINK_ACTIVE); 223 rcu_barrier(); /* wait until our RCU delayed slab frees are completed */ 224 225 return freed; 226 } 227 228 static bool i915_gem_shrinker_lock(struct drm_device *dev, bool *unlock) 229 { > 230 switch (mutex_trylock_recursive(&dev->struct_mutex)) { 231 case MUTEX_TRYLOCK_FAILED: 232 return false; 233 234 case MUTEX_TRYLOCK_SUCCESS: 235 *unlock = true; 236 return true; 237 238 case MUTEX_TRYLOCK_RECURSIVE:
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