diff options
author | Andy Lutomirski <luto@kernel.org> | 2015-06-25 18:43:58 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2015-07-06 15:23:26 +0200 |
commit | 87be28aaf1458445d5f648688c2eec0f13b8f3b9 (patch) | |
tree | c040f44d77fe24680f16cc2ab5ddab05fd780431 /arch/x86 | |
parent | 9261e050b686c9fe229cd9918d997b3caaf20e34 (diff) | |
download | linux-stable-87be28aaf1458445d5f648688c2eec0f13b8f3b9.tar.gz linux-stable-87be28aaf1458445d5f648688c2eec0f13b8f3b9.tar.bz2 linux-stable-87be28aaf1458445d5f648688c2eec0f13b8f3b9.zip |
x86/asm/tsc: Replace rdtscll() with native_read_tsc()
Now that the ->read_tsc() paravirt hook is gone, rdtscll() is
just a wrapper around native_read_tsc(). Unwrap it.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm ML <kvm@vger.kernel.org>
Link: http://lkml.kernel.org/r/d2449ae62c1b1fb90195bcfb19ef4a35883a04dc.1434501121.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/boot/compressed/aslr.c | 2 | ||||
-rw-r--r-- | arch/x86/include/asm/msr.h | 3 | ||||
-rw-r--r-- | arch/x86/include/asm/tsc.h | 5 | ||||
-rw-r--r-- | arch/x86/kernel/apb_timer.c | 4 | ||||
-rw-r--r-- | arch/x86/kernel/apic/apic.c | 8 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 4 | ||||
-rw-r--r-- | arch/x86/kernel/espfix_64.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/hpet.c | 4 | ||||
-rw-r--r-- | arch/x86/kernel/trace_clock.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/tsc.c | 4 | ||||
-rw-r--r-- | arch/x86/kvm/vmx.c | 2 | ||||
-rw-r--r-- | arch/x86/lib/delay.c | 2 |
12 files changed, 18 insertions, 24 deletions
diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c index d7b1f655b3ef..ea33236190b1 100644 --- a/arch/x86/boot/compressed/aslr.c +++ b/arch/x86/boot/compressed/aslr.c @@ -82,7 +82,7 @@ static unsigned long get_random_long(void) if (has_cpuflag(X86_FEATURE_TSC)) { debug_putstr(" RDTSC"); - rdtscll(raw); + raw = native_read_tsc(); random ^= raw; use_i8254 = false; diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index d1afac7df484..7273b74e0f99 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -192,9 +192,6 @@ do { \ #define rdtscl(low) \ ((low) = (u32)native_read_tsc()) -#define rdtscll(val) \ - ((val) = native_read_tsc()) - #define rdtscp(low, high, aux) \ do { \ unsigned long long _val = native_read_tscp(&(aux)); \ diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 3da1cc1218ac..b4883902948b 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -21,15 +21,12 @@ extern void disable_TSC(void); static inline cycles_t get_cycles(void) { - unsigned long long ret = 0; - #ifndef CONFIG_X86_TSC if (!cpu_has_tsc) return 0; #endif - rdtscll(ret); - return ret; + return native_read_tsc(); } extern void tsc_init(void); diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c index 9fe111cc50f8..25efa534c4e4 100644 --- a/arch/x86/kernel/apb_timer.c +++ b/arch/x86/kernel/apb_timer.c @@ -263,7 +263,7 @@ static int apbt_clocksource_register(void) /* Verify whether apbt counter works */ t1 = dw_apb_clocksource_read(clocksource_apbt); - rdtscll(start); + start = native_read_tsc(); /* * We don't know the TSC frequency yet, but waiting for @@ -273,7 +273,7 @@ static int apbt_clocksource_register(void) */ do { rep_nop(); - rdtscll(now); + now = native_read_tsc(); } while ((now - start) < 200000UL); /* APBT is the only always on clocksource, it has to work! */ diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index dcb52850a28f..51af1ed1ae2e 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -457,7 +457,7 @@ static int lapic_next_deadline(unsigned long delta, { u64 tsc; - rdtscll(tsc); + tsc = native_read_tsc(); wrmsrl(MSR_IA32_TSC_DEADLINE, tsc + (((u64) delta) * TSC_DIVISOR)); return 0; } @@ -592,7 +592,7 @@ static void __init lapic_cal_handler(struct clock_event_device *dev) unsigned long pm = acpi_pm_read_early(); if (cpu_has_tsc) - rdtscll(tsc); + tsc = native_read_tsc(); switch (lapic_cal_loops++) { case 0: @@ -1209,7 +1209,7 @@ void setup_local_APIC(void) long long max_loops = cpu_khz ? cpu_khz : 1000000; if (cpu_has_tsc) - rdtscll(tsc); + tsc = native_read_tsc(); if (disable_apic) { disable_ioapic_support(); @@ -1293,7 +1293,7 @@ void setup_local_APIC(void) } if (queued) { if (cpu_has_tsc && cpu_khz) { - rdtscll(ntsc); + ntsc = native_read_tsc(); max_loops = (cpu_khz << 10) - (ntsc - tsc); } else max_loops--; diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index df919ff103c3..a5283d2d0094 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -125,7 +125,7 @@ void mce_setup(struct mce *m) { memset(m, 0, sizeof(struct mce)); m->cpu = m->extcpu = smp_processor_id(); - rdtscll(m->tsc); + m->tsc = native_read_tsc(); /* We hope get_seconds stays lockless */ m->time = get_seconds(); m->cpuvendor = boot_cpu_data.x86_vendor; @@ -1784,7 +1784,7 @@ static void collect_tscs(void *data) { unsigned long *cpu_tsc = (unsigned long *)data; - rdtscll(cpu_tsc[smp_processor_id()]); + cpu_tsc[smp_processor_id()] = native_read_tsc(); } static int mce_apei_read_done; diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c index f5d0730e7b08..334a2a9c034d 100644 --- a/arch/x86/kernel/espfix_64.c +++ b/arch/x86/kernel/espfix_64.c @@ -110,7 +110,7 @@ static void init_espfix_random(void) */ if (!arch_get_random_long(&rand)) { /* The constant is an arbitrary large prime */ - rdtscll(rand); + rand = native_read_tsc(); rand *= 0xc345c6b72fd16123UL; } diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 10757d0a3fcf..cc390fe69b71 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -735,7 +735,7 @@ static int hpet_clocksource_register(void) /* Verify whether hpet counter works */ t1 = hpet_readl(HPET_COUNTER); - rdtscll(start); + start = native_read_tsc(); /* * We don't know the TSC frequency yet, but waiting for @@ -745,7 +745,7 @@ static int hpet_clocksource_register(void) */ do { rep_nop(); - rdtscll(now); + now = native_read_tsc(); } while ((now - start) < 200000UL); if (t1 == hpet_readl(HPET_COUNTER)) { diff --git a/arch/x86/kernel/trace_clock.c b/arch/x86/kernel/trace_clock.c index 25b993729f9b..bd8f4d41bd56 100644 --- a/arch/x86/kernel/trace_clock.c +++ b/arch/x86/kernel/trace_clock.c @@ -15,7 +15,7 @@ u64 notrace trace_clock_x86_tsc(void) u64 ret; rdtsc_barrier(); - rdtscll(ret); + ret = native_read_tsc(); return ret; } diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index e7710cd7ba00..e66f5dcaeb63 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -248,7 +248,7 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu) data = cyc2ns_write_begin(cpu); - rdtscll(tsc_now); + tsc_now = native_read_tsc(); ns_now = cycles_2_ns(tsc_now); /* @@ -290,7 +290,7 @@ u64 native_sched_clock(void) } /* read the Time Stamp Counter: */ - rdtscll(tsc_now); + tsc_now = native_read_tsc(); /* return the value in ns */ return cycles_2_ns(tsc_now); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e856dd566f4c..4fa1ccad7beb 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2236,7 +2236,7 @@ static u64 guest_read_tsc(void) { u64 host_tsc, tsc_offset; - rdtscll(host_tsc); + host_tsc = native_read_tsc(); tsc_offset = vmcs_read64(TSC_OFFSET); return host_tsc + tsc_offset; } diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c index 39d6a3db0b96..9a52ad0c0758 100644 --- a/arch/x86/lib/delay.c +++ b/arch/x86/lib/delay.c @@ -100,7 +100,7 @@ void use_tsc_delay(void) int read_current_timer(unsigned long *timer_val) { if (delay_fn == delay_tsc) { - rdtscll(*timer_val); + *timer_val = native_read_tsc(); return 0; } return -1; |