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authorThomas Gleixner <tglx@linutronix.de>2008-07-15 22:08:04 +0200
committerThomas Gleixner <tglx@linutronix.de>2008-07-15 22:46:47 +0200
commit431ceb83f703a343bdd14350480a2224fa4bfedf (patch)
tree2f4644aec0d326e23327ed2297a4a4f52b1d830e
parentb9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff)
x86: fix TSC build error on 32bit
Dave Hansen reported a build error on 32bit which went unnoticed as newer gcc versions seem to optimize unused static functions away before compiling them. Make vread_tsc() depend on CONFIG_X86_64 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/tsc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 3c36f92160c..7603c055390 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -358,6 +358,7 @@ static cycle_t read_tsc(void)
ret : clocksource_tsc.cycle_last;
}
+#ifdef CONFIG_X86_64
static cycle_t __vsyscall_fn vread_tsc(void)
{
cycle_t ret = (cycle_t)vget_cycles();
@@ -365,6 +366,7 @@ static cycle_t __vsyscall_fn vread_tsc(void)
return ret >= __vsyscall_gtod_data.clock.cycle_last ?
ret : __vsyscall_gtod_data.clock.cycle_last;
}
+#endif
static struct clocksource clocksource_tsc = {
.name = "tsc",