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authorRobin Holt <holt@sgi.com>2009-04-02 16:59:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:05:11 -0700
commitf5f7eac41db827a47b2163330eecd7bb55ae9f12 (patch)
treeae8ab45dba49c1b3d5f2088051389e6fd3e4a24c /arch/sparc
parente8c158bb313c1df421eab7dc4299cd39cbbf5895 (diff)
downloadop-kernel-dev-f5f7eac41db827a47b2163330eecd7bb55ae9f12.zip
op-kernel-dev-f5f7eac41db827a47b2163330eecd7bb55ae9f12.tar.gz
Allow rwlocks to re-enable interrupts
Pass the original flags to rwlock arch-code, so that it can re-enable interrupts if implemented for that architecture. Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs which just do the same thing as non-flags variants. Signed-off-by: Petr Tesarik <ptesarik@suse.cz> Signed-off-by: Robin Holt <holt@sgi.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/include/asm/spinlock_32.h2
-rw-r--r--arch/sparc/include/asm/spinlock_64.h2
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/spinlock_32.h b/arch/sparc/include/asm/spinlock_32.h
index bf2d532..46f91ab 100644
--- a/arch/sparc/include/asm/spinlock_32.h
+++ b/arch/sparc/include/asm/spinlock_32.h
@@ -177,6 +177,8 @@ static inline int __read_trylock(raw_rwlock_t *rw)
#define __raw_write_unlock(rw) do { (rw)->lock = 0; } while(0)
#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
+#define __raw_read_lock_flags(rw, flags) __raw_read_lock(rw)
+#define __raw_write_lock_flags(rw, flags) __raw_write_lock(rw)
#define _raw_spin_relax(lock) cpu_relax()
#define _raw_read_relax(lock) cpu_relax()
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
index c4d274d..f6b2b92 100644
--- a/arch/sparc/include/asm/spinlock_64.h
+++ b/arch/sparc/include/asm/spinlock_64.h
@@ -211,9 +211,11 @@ static int inline __write_trylock(raw_rwlock_t *lock)
}
#define __raw_read_lock(p) __read_lock(p)
+#define __raw_read_lock_flags(p, f) __read_lock(p)
#define __raw_read_trylock(p) __read_trylock(p)
#define __raw_read_unlock(p) __read_unlock(p)
#define __raw_write_lock(p) __write_lock(p)
+#define __raw_write_lock_flags(p, f) __write_lock(p)
#define __raw_write_unlock(p) __write_unlock(p)
#define __raw_write_trylock(p) __write_trylock(p)
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