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hv: export current Hyper-V clocksource

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As a preparation to implementing Hyper-V PTP device supporting
.getcrosststamp we need to export a reference to the current Hyper-V
clocksource in use (MSR or TSC page).

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov
2017-02-04 09:57:13 -07:00
committed by Greg Kroah-Hartman
parent 9b06e1018a
commit dee863b571
2 changed files with 12 additions and 4 deletions
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3
arch/x86/include/asm/mshyperv.h
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@@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/clocksource.h>
#include <asm/hyperv.h>
/*
@@ -168,6 +169,8 @@ void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);
#if IS_ENABLED(CONFIG_HYPERV)
extern struct clocksource *hyperv_cs;
void hyperv_init(void);
void hyperv_report_panic(struct pt_regs *regs);
bool hv_is_hypercall_page_setup(void);