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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-30 13:31:03 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:31:03 +0100
commit4e87173eacfd0d798aeeba14026893797826bc93 (patch)
tree14a47677f3cc7074a5b190e159873b925c8deb77 /arch
parent16e2011be67b8625c1c600f9742c2279be3c0c68 (diff)
x86: split get_cycles_sync
This patch splits get_cycles_sync() into __get_cycles_sync(), and the rdtscll part. Paravirt guests cannot issue rdtscl directly, as it involves a function call in vdso area. So, using the __get_cycles_sync() base, we introduce vget_cycles_sync, which then calls the native version of rdtscll. Ideally, however, a guest should define its own clocksource, together with a vread function Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/tsc_64.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c
index 204a9080af04..3723401c4593 100644
--- a/arch/x86/kernel/tsc_64.c
+++ b/arch/x86/kernel/tsc_64.c
@@ -306,7 +306,7 @@ static cycle_t read_tsc(void)
static cycle_t __vsyscall_fn vread_tsc(void)
{
- cycle_t ret = (cycle_t)get_cycles_sync();
+ cycle_t ret = (cycle_t)vget_cycles_sync();
return ret;
}