linux/arch/x86/lib/cache-smp.c
Borislav Petkov a7b480e7f3 x86, lib: Add wbinvd smp helpers
Add wbinvd_on_cpu and wbinvd_on_all_cpus stubs for executing wbinvd on a
particular CPU.

[ hpa: renamed lib/smp.c to lib/cache-smp.c ]
[ hpa: wbinvd_on_all_cpus() returns int, but wbinvd() returns
  void.  Thus, the former cannot be a macro for the latter,
  replace with an inline function. ]

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-2-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-01-22 16:05:42 -08:00

19 lines
322 B
C

#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);