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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:37:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:37:06 -0800
commit58f02db466900003b801bdfdeddc4d96ce42b7d5 (patch)
tree3aec1f9f4aa147fde3facfe6c5f893ac667ce737 /arch/x86/lib
parent43a834d86c136b31ef6ad796725eb474a55a908d (diff)
parentcb19060abfdecac0d1eb2d2f0e7d6b7a3f8bc4f4 (diff)
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cacheinfo: Enable L3 CID only on AMD x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1 x86, cpu: Print AMD virtualization features in /proc/cpuinfo x86, cacheinfo: Calculate L3 indices x86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches x86, cacheinfo: Fix disabling of L3 cache indices intel-agp: Switch to wbinvd_on_all_cpus x86, lib: Add wbinvd smp helpers
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/Makefile2
-rw-r--r--arch/x86/lib/cache-smp.c19
2 files changed, 20 insertions, 1 deletions
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index cffd754f303..d85e0e438b5 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -14,7 +14,7 @@ $(obj)/inat.o: $(obj)/inat-tables.c
clean-files := inat-tables.c
-obj-$(CONFIG_SMP) += msr-smp.o
+obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o
lib-y := delay.o
lib-y += thunk_$(BITS).o
diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c
new file mode 100644
index 00000000000..a3c66887503
--- /dev/null
+++ b/arch/x86/lib/cache-smp.c
@@ -0,0 +1,19 @@
+#include <linux/smp.h>
+#include <linux/module.h>
+
+static void __wbinvd(void *dummy)
+{
+ wbinvd();
+}
+
+void wbinvd_on_cpu(int cpu)
+{
+ smp_call_function_single(cpu, __wbinvd, NULL, 1);
+}
+EXPORT_SYMBOL(wbinvd_on_cpu);
+
+int wbinvd_on_all_cpus(void)
+{
+ return on_each_cpu(__wbinvd, NULL, 1);
+}
+EXPORT_SYMBOL(wbinvd_on_all_cpus);