x86: set_cyc2ns_scale() remove prev scale

Peter Zijlstra pointed out that it's unused.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c
index 68657d8..3d7e6e9 100644 (file)
--- a/arch/x86/kernel/tsc_32.c
+++ b/arch/x86/kernel/tsc_32.c
@@ -84,8 +84,8 @@ DEFINE_PER_CPU(unsigned long, cyc2ns);
 
 static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
 {
-       unsigned long flags, prev_scale, *scale;
        unsigned long long tsc_now, ns_now;
+       unsigned long flags, *scale;
 
        local_irq_save(flags);
        sched_clock_idle_sleep_event();
@@ -95,7 +95,6 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
        rdtscll(tsc_now);
        ns_now = __cycles_2_ns(tsc_now);
 
-       prev_scale = *scale;
        if (cpu_khz)
                *scale = (NSEC_PER_MSEC << CYC2NS_SCALE_FACTOR)/cpu_khz;
 

diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c
index d3bebaa..ceeba01 100644 (file)
--- a/arch/x86/kernel/tsc_64.c
+++ b/arch/x86/kernel/tsc_64.c
@@ -44,8 +44,8 @@ DEFINE_PER_CPU(unsigned long, cyc2ns);
 
 static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
 {
-       unsigned long flags, prev_scale, *scale;
        unsigned long long tsc_now, ns_now;
+       unsigned long flags, *scale;
 
        local_irq_save(flags);
        sched_clock_idle_sleep_event();
@@ -55,7 +55,6 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
        rdtscll(tsc_now);
        ns_now = __cycles_2_ns(tsc_now);
 
-       prev_scale = *scale;
        if (cpu_khz)
                *scale = (NSEC_PER_MSEC << CYC2NS_SCALE_FACTOR)/cpu_khz;