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| author | Christoph Lameter <cl@linux.com> | 2010-12-14 10:28:44 -0600 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-12-18 15:54:04 +0100 |
| commit | 7296e08abac0a22a2534a4f6e493c764f2c77583 (patch) | |
| tree | 3aa79d3046bf227b14d1f718fa097f87f6257fb9 /arch/x86/Kconfig.cpu | |
| parent | 2b7124428561c7c3cfa4a58cc4c6feea53f3148e (diff) | |
| download | linux-7296e08abac0a22a2534a4f6e493c764f2c77583.tar.bz2 | |
x86: this_cpu_cmpxchg and this_cpu_xchg operations
Provide support as far as the hardware capabilities of the x86 cpus
allow.
Define CONFIG_CMPXCHG_LOCAL in Kconfig.cpu to allow core code to test for
fast cpuops implementations.
V1->V2:
- Take out the definition for this_cpu_cmpxchg_8 and move it into
a separate patch.
tj: - Reordered ops to better follow this_cpu_* organization.
- Renamed macro temp variables similar to their existing
neighbours.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/Kconfig.cpu')
| -rw-r--r-- | arch/x86/Kconfig.cpu | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 2ac9069890cd..15588a0ef466 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -310,6 +310,9 @@ config X86_INTERNODE_CACHE_SHIFT config X86_CMPXCHG def_bool X86_64 || (X86_32 && !M386) +config CMPXCHG_LOCAL + def_bool X86_64 || (X86_32 && !M386) + config X86_L1_CACHE_SHIFT int default "7" if MPENTIUM4 || MPSC |