[PATCH 10/34] drm/amdkfd: svm range eviction and restore
kernel test robot
lkp at intel.com
Thu Apr 1 15:19:45 UTC 2021
Hi Felix,
I love your patch! Perhaps something to improve:
[auto build test WARNING on next-20210331]
[cannot apply to drm-intel/for-linux-next drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master drm/drm-next v5.12-rc5 v5.12-rc4 v5.12-rc3 v5.12-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Felix-Kuehling/Add-HMM-based-SVM-memory-manager-to-KFD-v3/20210401-122712
base: 7a43c78d0573e0bbbb0456b033e2b9a895b89464
config: x86_64-randconfig-a011-20210401 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/0day-ci/linux/commit/07dfb6a9dad338dae38a3a840ce14f77e7498b1f
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Felix-Kuehling/Add-HMM-based-SVM-memory-manager-to-KFD-v3/20210401-122712
git checkout 07dfb6a9dad338dae38a3a840ce14f77e7498b1f
# save the attached .config to linux build tree
make W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>
All warnings (new ones prefixed by >>):
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:170:6: warning: no previous prototype for 'svm_range_dma_unmap' [-Wmissing-prototypes]
170 | void svm_range_dma_unmap(struct device *dev, dma_addr_t *dma_addr,
| ^~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:603:6: warning: no previous prototype for 'svm_range_add_child' [-Wmissing-prototypes]
603 | void svm_range_add_child(struct svm_range *prange, struct mm_struct *mm,
| ^~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:799:5: warning: no previous prototype for 'svm_range_reserve_bos' [-Wmissing-prototypes]
799 | int svm_range_reserve_bos(struct svm_validate_context *ctx)
| ^~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:853:6: warning: no previous prototype for 'svm_range_unreserve_bos' [-Wmissing-prototypes]
853 | void svm_range_unreserve_bos(struct svm_validate_context *ctx)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c: In function 'svm_range_evict':
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:1071:6: warning: variable 'invalid' set but not used [-Wunused-but-set-variable]
1071 | int invalid, evicted_ranges;
| ^~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c: At top level:
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:1094:19: warning: no previous prototype for 'svm_range_clone' [-Wmissing-prototypes]
1094 | struct svm_range *svm_range_clone(struct svm_range *old)
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:1349:1: warning: no previous prototype for 'svm_range_add_list_work' [-Wmissing-prototypes]
1349 | svm_range_add_list_work(struct svm_range_list *svms, struct svm_range *prange,
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:1371:6: warning: no previous prototype for 'schedule_deferred_list_work' [-Wmissing-prototypes]
1371 | void schedule_deferred_list_work(struct svm_range_list *svms)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/invalid +1071 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c
1054
1055 /**
1056 * svm_range_evict - evict svm range
1057 *
1058 * Stop all queues of the process to ensure GPU doesn't access the memory, then
1059 * return to let CPU evict the buffer and proceed CPU pagetable update.
1060 *
1061 * Don't need use lock to sync cpu pagetable invalidation with GPU execution.
1062 * If invalidation happens while restore work is running, restore work will
1063 * restart to ensure to get the latest CPU pages mapping to GPU, then start
1064 * the queues.
1065 */
1066 static int
1067 svm_range_evict(struct svm_range *prange, struct mm_struct *mm,
1068 unsigned long start, unsigned long last)
1069 {
1070 struct svm_range_list *svms = prange->svms;
> 1071 int invalid, evicted_ranges;
1072 int r = 0;
1073
1074 invalid = atomic_inc_return(&prange->invalid);
1075 evicted_ranges = atomic_inc_return(&svms->evicted_ranges);
1076 if (evicted_ranges != 1)
1077 return r;
1078
1079 pr_debug("evicting svms 0x%p range [0x%lx 0x%lx]\n",
1080 prange->svms, prange->start, prange->last);
1081
1082 /* First eviction, stop the queues */
1083 r = kgd2kfd_quiesce_mm(mm);
1084 if (r)
1085 pr_debug("failed to quiesce KFD\n");
1086
1087 pr_debug("schedule to restore svm %p ranges\n", svms);
1088 schedule_delayed_work(&svms->restore_work,
1089 msecs_to_jiffies(AMDGPU_SVM_RANGE_RESTORE_DELAY_MS));
1090
1091 return r;
1092 }
1093
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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