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Nama	Ukuran	Aksi
amd-ibs.h	4.9 MB	View DL Edit
asm.h	4.88 MB	View DL Edit
atomic.h	1.77 MB	View DL Edit
barrier.h	1.32 MB	View DL Edit
cmpxchg.h	2.56 MB	View DL Edit
cpufeatures.h	36.77 MB	View DL Edit
disabled-features.h	4.25 MB	View DL Edit
emulate_prefix.h	484 B	View DL Edit
inat.h	6.36 MB	View DL Edit
inat_types.h	341 B	View DL Edit
insn.h	8.37 MB	View DL Edit
msr-index.h	45.47 MB	View DL Edit
nops.h	2.24 MB	View DL Edit
orc_types.h	2.13 MB	View DL Edit
pvclock-abi.h	1.49 MB	View DL Edit
pvclock.h	2.48 MB	View DL Edit
required-features.h	2.89 MB	View DL Edit
rmwcc.h	603 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.34.1.el9_7.x86_64/tools/arch/x86/include/asm/pvclock.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_PVCLOCK_H
#define _ASM_X86_PVCLOCK_H

#include <asm/barrier.h>
#include <asm/pvclock-abi.h>

/* some helper functions for xen and kvm pv clock sources */
u64 pvclock_clocksource_read(struct pvclock_vcpu_time_info *src);
u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src);
void pvclock_set_flags(u8 flags);
unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src);
void pvclock_resume(void);

void pvclock_touch_watchdogs(void);

static __always_inline
unsigned pvclock_read_begin(const struct pvclock_vcpu_time_info *src)
{
	unsigned version = src->version & ~1;
	/* Make sure that the version is read before the data. */
	rmb();
	return version;
}

static __always_inline
bool pvclock_read_retry(const struct pvclock_vcpu_time_info *src,
			unsigned version)
{
	/* Make sure that the version is re-read after the data. */
	rmb();
	return version != src->version;
}

/*
 * Scale a 64-bit delta by scaling and multiplying by a 32-bit fraction,
 * yielding a 64-bit result.
 */
static inline u64 pvclock_scale_delta(u64 delta, u32 mul_frac, int shift)
{
	u64 product;
#ifdef __i386__
	u32 tmp1, tmp2;
#else
	unsigned long tmp;
#endif

if (shift < 0)
		delta >>= -shift;
	else
		delta <<= shift;

#ifdef __i386__
	__asm__ (
		"mul  %5       ; "
		"mov  %4,%%eax ; "
		"mov  %%edx,%4 ; "
		"mul  %5       ; "
		"xor  %5,%5    ; "
		"add  %4,%%eax ; "
		"adc  %5,%%edx ; "
		: "=A" (product), "=r" (tmp1), "=r" (tmp2)
		: "a" ((u32)delta), "1" ((u32)(delta >> 32)), "2" (mul_frac) );
#elif defined(__x86_64__)
	__asm__ (
		"mulq %[mul_frac] ; shrd $32, %[hi], %[lo]"
		: [lo]"=a"(product),
		  [hi]"=d"(tmp)
		: "0"(delta),
		  [mul_frac]"rm"((u64)mul_frac));
#else
#error implement me!
#endif

return product;
}

static __always_inline
u64 __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src, u64 tsc)
{
	u64 delta = tsc - src->tsc_timestamp;
	u64 offset = pvclock_scale_delta(delta, src->tsc_to_system_mul,
					     src->tsc_shift);
	return src->system_time + offset;
}

struct pvclock_vsyscall_time_info {
	struct pvclock_vcpu_time_info pvti;
} __attribute__((__aligned__(64)));

#define PVTI_SIZE sizeof(struct pvclock_vsyscall_time_info)

#ifdef CONFIG_PARAVIRT_CLOCK
void pvclock_set_pvti_cpu0_va(struct pvclock_vsyscall_time_info *pvti);
struct pvclock_vsyscall_time_info *pvclock_get_pvti_cpu0_va(void);
#else
static inline struct pvclock_vsyscall_time_info *pvclock_get_pvti_cpu0_va(void)
{
	return NULL;
}
#endif

#endif /* _ASM_X86_PVCLOCK_H */

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