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[LIB]: Consolidate _atomic_dec_and_lock()

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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>
This commit is contained in:
David S. Miller
2005-09-14 21:47:01 -07:00
parent 4a805e863d
commit 4db2ce0199
26 changed files with 38 additions and 396 deletions
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5
arch/ia64/Kconfig
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@@ -298,11 +298,6 @@ config PREEMPT
source "mm/Kconfig"
config HAVE_DEC_LOCK
bool
depends on (SMP || PREEMPT)
default y
config IA32_SUPPORT
bool "Support for Linux/x86 binaries"
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