tree 87a00c97e02a77cdfec517398caa3f1d8f6a2f0d
parent 4a805e863d6b9466baf7084e1d6fdbe6e0628d8e
author David S. Miller <davem@davemloft.net> 1126759621 -0700
committer David S. Miller <davem@davemloft.net> 1126759621 -0700

[LIB]: Consolidate _atomic_dec_and_lock()

Several implementations were essentialy a common piece of C code using
the cmpxchg() macro.  Put the implementation in one spot that everyone
can share, and convert sparc64 over to using this.

Alpha is the lone arch-specific implementation, which codes up a
special fast path for the common case in order to avoid GP reloading
which a pure C version would require.

Signed-off-by: David S. Miller <davem@davemloft.net>