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| author | Ingo Molnar <mingo@kernel.org> | 2018-12-17 17:46:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-12-17 17:46:26 +0100 |
| commit | 76aea1eeb98d2d75d9297fda777efeffe3657aeb (patch) | |
| tree | 18fdf94ec846b553f1e60438279a3b449897189b /Documentation/core-api/xarray.rst | |
| parent | perf/core: Declare the __percpu attribute on non-deref types (diff) | |
| parent | Linux 4.20-rc7 (diff) | |
| download | linux-76aea1eeb98d2d75d9297fda777efeffe3657aeb.tar.gz linux-76aea1eeb98d2d75d9297fda777efeffe3657aeb.zip | |
Merge tag 'v4.20-rc7' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/core-api/xarray.rst')
| -rw-r--r-- | Documentation/core-api/xarray.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/core-api/xarray.rst b/Documentation/core-api/xarray.rst index dbe96cb5558e..6a6d67acaf69 100644 --- a/Documentation/core-api/xarray.rst +++ b/Documentation/core-api/xarray.rst @@ -187,6 +187,8 @@ Takes xa_lock internally: * :c:func:`xa_erase_bh` * :c:func:`xa_erase_irq` * :c:func:`xa_cmpxchg` + * :c:func:`xa_cmpxchg_bh` + * :c:func:`xa_cmpxchg_irq` * :c:func:`xa_store_range` * :c:func:`xa_alloc` * :c:func:`xa_alloc_bh` @@ -263,7 +265,8 @@ using :c:func:`xa_lock_irqsave` in both the interrupt handler and process context, or :c:func:`xa_lock_irq` in process context and :c:func:`xa_lock` in the interrupt handler. Some of the more common patterns have helper functions such as :c:func:`xa_store_bh`, :c:func:`xa_store_irq`, -:c:func:`xa_erase_bh` and :c:func:`xa_erase_irq`. +:c:func:`xa_erase_bh`, :c:func:`xa_erase_irq`, :c:func:`xa_cmpxchg_bh` +and :c:func:`xa_cmpxchg_irq`. Sometimes you need to protect access to the XArray with a mutex because that lock sits above another mutex in the locking hierarchy. That does |