diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2022-01-31 11:50:09 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-02-08 22:57:29 -0800 |
| commit | 3c5b903955251ea464fca383a42d981e33004df6 (patch) | |
| tree | c4ff8665db9ad785d73be3a5ec462964e2148b86 /drivers/nvdimm | |
| parent | 53fa1bff3426344d466d91e81f076eab677d0ece (diff) | |
cxl: Prove CXL locking
When CONFIG_PROVE_LOCKING is enabled the 'struct device' definition gets
an additional mutex that is not clobbered by
lockdep_set_novalidate_class() like the typical device_lock(). This
allows for local annotation of subsystem locks with mutex_lock_nested()
per the subsystem's object/lock hierarchy. For CXL, this primarily needs
the ability to lock ports by depth and child objects of ports by their
parent parent-port lock.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ben Widawsky <ben.widawsky@intel.com>
Link: https://lore.kernel.org/r/164365853422.99383.1052399160445197427.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
| -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 a11850dd475d..2650a852eeaf 100644 --- a/drivers/nvdimm/nd-core.h +++ b/drivers/nvdimm/nd-core.h @@ -185,7 +185,7 @@ static inline void devm_nsio_disable(struct device *dev, } #endif -#ifdef CONFIG_PROVE_LOCKING +#ifdef CONFIG_PROVE_NVDIMM_LOCKING extern struct class *nd_class; enum { |