Messages in this thread Patch in this message | | | From | Karsten Wiese <> | Subject | [PATCH] x86: set_cyc2ns_scale() remove tsc_now and ns_now | Date | Thu, 10 Apr 2008 23:31:11 +0200 |
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Both are unused and the functions rdtscll() and __cycles_2_ns() don't have side-effects.
Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> --- arch/x86/kernel/tsc_32.c | 4 ---- arch/x86/kernel/tsc_64.c | 4 ---- 2 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c index 82602d7..0406b80 100644 --- a/arch/x86/kernel/tsc_32.c +++ b/arch/x86/kernel/tsc_32.c @@ -84,7 +84,6 @@ DEFINE_PER_CPU(unsigned long, cyc2ns); static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) { - unsigned long long tsc_now, ns_now; unsigned long flags, *scale; local_irq_save(flags); @@ -92,9 +91,6 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) scale = &per_cpu(cyc2ns, cpu); - rdtscll(tsc_now); - ns_now = __cycles_2_ns(tsc_now); - 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 f08e1ea..5246036 100644 --- a/arch/x86/kernel/tsc_64.c +++ b/arch/x86/kernel/tsc_64.c @@ -44,7 +44,6 @@ DEFINE_PER_CPU(unsigned long, cyc2ns); static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) { - unsigned long long tsc_now, ns_now; unsigned long flags, *scale; local_irq_save(flags); @@ -52,9 +51,6 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) scale = &per_cpu(cyc2ns, cpu); - rdtscll(tsc_now); - ns_now = __cycles_2_ns(tsc_now); - if (cpu_khz) *scale = (NSEC_PER_MSEC << CYC2NS_SCALE_FACTOR)/cpu_khz; -- 1.5.3.3
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