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| author | Dan Williams <dan.j.williams@intel.com> | 2022-04-21 18:33:29 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-04-29 00:01:55 +0300 |
| commit | 4a0079bc7aae5a003ecc548090b75c96d3abf490 (patch) | |
| tree | 72c286284bdc69a6549316792598916b7882d5e2 /drivers/nvdimm/nd-core.h | |
| parent | 38a34e10768c85d3be4bb31fea5d8942bb72bbd7 (diff) | |
| download | linux-4a0079bc7aae5a003ecc548090b75c96d3abf490.tar.xz | |
nvdimm: Replace lockdep_mutex with local lock classes
In response to an attempt to expand dev->lockdep_mutex for device_lock()
validation [1], Peter points out [2] that the lockdep API already has
the ability to assign a dedicated lock class per subsystem device-type.
Use lockdep_set_class() to override the default device_lock()
'__lockdep_no_validate__' class for each NVDIMM subsystem device-type. This
enables lockdep to detect deadlocks and recursive locking within the
device-driver core and the subsystem.
Link: https://lore.kernel.org/r/164982968798.684294.15817853329823976469.stgit@dwillia2-desk3.amr.corp.intel.com [1]
Link: https://lore.kernel.org/r/Ylf0dewci8myLvoW@hirez.programming.kicks-ass.net [2]
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/165055520896.3745911.8021255583475547548.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/nd-core.h')
| -rw-r--r-- | drivers/nvdimm/nd-core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h index 448f9dcb4bb7..99b04106434b 100644 --- a/drivers/nvdimm/nd-core.h +++ b/drivers/nvdimm/nd-core.h @@ -106,7 +106,7 @@ void nd_region_create_dax_seed(struct nd_region *nd_region); int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus); void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus); void nd_synchronize(void); -void __nd_device_register(struct device *dev); +void nd_device_register(struct device *dev); struct nd_label_id; char *nd_label_gen_id(struct nd_label_id *label_id, const uuid_t *uuid, u32 flags); |