Messages in this thread Patch in this message | | | Date | Mon, 15 May 2023 15:00:19 -0300 | From | Marcelo Tosatti <> | Subject | [PATCH v8 04/13] this_cpu_cmpxchg: S390: switch this_cpu_cmpxchg to locked, add _local function |
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Goal is to have vmstat_shepherd to transfer from per-CPU counters to global counters remotely. For this, an atomic this_cpu_cmpxchg is necessary.
Following the kernel convention for cmpxchg/cmpxchg_local, add S390's this_cpu_cmpxchg_local.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Index: linux-vmstat-remote/arch/s390/include/asm/percpu.h =================================================================== --- linux-vmstat-remote.orig/arch/s390/include/asm/percpu.h +++ linux-vmstat-remote/arch/s390/include/asm/percpu.h @@ -148,6 +148,11 @@ #define this_cpu_cmpxchg_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define this_cpu_cmpxchg_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_1(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_2(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_local_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) + #define arch_this_cpu_xchg(pcp, nval) \ ({ \ typeof(pcp) *ptr__; \
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