Commit 431ceb83 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
parent b9d2252c

arch/x86/kernel/tsc.c

+2 −0
Original line number Diff line number Diff line
@@ -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",