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>
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@ -358,6 +358,7 @@ static cycle_t read_tsc(void)
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ret : clocksource_tsc.cycle_last;
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ret : clocksource_tsc.cycle_last;
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}
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}
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#ifdef CONFIG_X86_64
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static cycle_t __vsyscall_fn vread_tsc(void)
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static cycle_t __vsyscall_fn vread_tsc(void)
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{
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{
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cycle_t ret = (cycle_t)vget_cycles();
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cycle_t ret = (cycle_t)vget_cycles();
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@ -365,6 +366,7 @@ static cycle_t __vsyscall_fn vread_tsc(void)
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return ret >= __vsyscall_gtod_data.clock.cycle_last ?
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return ret >= __vsyscall_gtod_data.clock.cycle_last ?
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ret : __vsyscall_gtod_data.clock.cycle_last;
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ret : __vsyscall_gtod_data.clock.cycle_last;
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}
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}
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#endif
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static struct clocksource clocksource_tsc = {
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static struct clocksource clocksource_tsc = {
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.name = "tsc",
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.name = "tsc",
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