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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-01-06 00:19:07 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:48 -0800 |
| commit | 973bd9937569146de0917f54f05b2942f8257912 (patch) | |
| tree | 86dd796de5bf456eca904b350c9515f4795122bb /arch/s390/kernel/machine_kexec.c | |
| parent | [PATCH] uml: free network IRQ correctly (diff) | |
| download | linux-dev-973bd9937569146de0917f54f05b2942f8257912.tar.xz linux-dev-973bd9937569146de0917f54f05b2942f8257912.zip | |
[PATCH] s390: atomic primitives
Hugh Dickins <hugh@veritas.com>
Fix the broken atomic_cmpxchg primitive. Add atomic_sub_and_test,
atomic64_sub_return, atomic64_sub_and_test, atomic64_cmpxchg,
atomic64_add_unless and atomic64_inc_not_zero. Replace old style
atomic_compare_and_swap by atomic_cmpxchg. Shorten the whole header by
defining most primitives with the two inline functions atomic_add_return and
atomic_sub_return.
In addition this patch contains the s390 related fixes of Hugh's "mm: fill
arch atomic64 gaps" patch.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390/kernel/machine_kexec.c')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index 5aa71b05b8ae..f0ed5c642c74 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -85,7 +85,7 @@ kexec_halt_all_cpus(void *kernel_image) pfault_fini(); #endif - if (atomic_compare_and_swap(-1, smp_processor_id(), &cpuid)) + if (atomic_cmpxchg(&cpuid, -1, smp_processor_id()) != -1) signal_processor(smp_processor_id(), sigp_stop); /* Wait for all other cpus to enter stopped state */ |