diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2012-12-17 16:01:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 17:15:18 -0800 |
| commit | 22b361d1df7bc25b558e52f22e779286a3d323e4 (patch) | |
| tree | a66c2e50d07d87e52dfc74a1e9118b2aff6759fe /block | |
| parent | 8ebe34731a0d1a9d89b536430afd98d0fadec99b (diff) | |
| download | lwn-22b361d1df7bc25b558e52f22e779286a3d323e4.tar.gz lwn-22b361d1df7bc25b558e52f22e779286a3d323e4.zip | |
percpu_rw_semaphore: introduce CONFIG_PERCPU_RWSEM
Currently only block_dev and uprobes use percpu_rw_semaphore,
add the config option selected by BLOCK || UPROBES.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/Kconfig b/block/Kconfig index a7e40a7c8214..4a85ccf8d4cf 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -4,6 +4,7 @@ menuconfig BLOCK bool "Enable the block layer" if EXPERT default y + select PERCPU_RWSEM help Provide block layer support for the kernel. |