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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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bbab4f3bb7
VMI timer code. It works by taking over the local APIC clock when APIC is configured, which requires a couple hooks into the APIC code. The backend timer code could be commonized into the timer infrastructure, but there are some pieces missing (stolen time, in particular), and the exact semantics of when to do accounting for NO_IDLE need to be shared between different hypervisors as well. So for now, VMI timer is a separate module. [Adrian Bunk: cleanups] Subject: VMI timer patches Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@osdl.org>
43 lines
785 B
C
43 lines
785 B
C
#ifndef _ASMi386_TIME_H
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#define _ASMi386_TIME_H
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#include <linux/efi.h>
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#include "mach_time.h"
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static inline unsigned long native_get_wallclock(void)
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{
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unsigned long retval;
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if (efi_enabled)
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retval = efi_get_time();
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else
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retval = mach_get_cmos_time();
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return retval;
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}
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static inline int native_set_wallclock(unsigned long nowtime)
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{
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int retval;
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if (efi_enabled)
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retval = efi_set_rtc_mmss(nowtime);
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else
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retval = mach_set_rtc_mmss(nowtime);
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return retval;
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}
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#ifdef CONFIG_PARAVIRT
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#include <asm/paravirt.h>
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extern unsigned long long native_sched_clock(void);
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#else /* !CONFIG_PARAVIRT */
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#define get_wallclock() native_get_wallclock()
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#define set_wallclock(x) native_set_wallclock(x)
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#define do_time_init() time_init_hook()
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#endif /* CONFIG_PARAVIRT */
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#endif
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