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Commit 773b79f7 authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Ingo Molnar
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tracing/hyper-v: Trace hyperv_mmu_flush_tlb_others() 



Add Hyper-V tracing subsystem and trace hyperv_mmu_flush_tlb_others().
Tracing is done the same way we do xen_mmu_flush_tlb_others().

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarStephen Hemminger <sthemmin@microsoft.com>
Reviewed-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devel@linuxdriverproject.org
Link: http://lkml.kernel.org/r/20170802160921.21791-10-vkuznets@redhat.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 628f54cc

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -6258,6 +6258,7 @@ M: Stephen Hemminger <sthemmin@microsoft.com> 
L:	devel@linuxdriverproject.org

S:	Maintained

F:	arch/x86/include/asm/mshyperv.h

F:	arch/x86/include/asm/trace/hyperv.h

F:	arch/x86/include/uapi/asm/hyperv.h

F:	arch/x86/kernel/cpu/mshyperv.c

F:	arch/x86/hyperv

arch/x86/hyperv/mmu.c

+7 −0
Original line number Diff line number Diff line
@@ -10,6 +10,9 @@ 
#include <asm/msr.h>

#include <asm/tlbflush.h>



#define CREATE_TRACE_POINTS

#include <asm/trace/hyperv.h>



/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */

struct hv_flush_pcpu {

	u64 address_space;
@@ -103,6 +106,8 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, 
	u64 status = U64_MAX;

	unsigned long flags;



	trace_hyperv_mmu_flush_tlb_others(cpus, info);



	if (!pcpu_flush || !hv_hypercall_pg)

		goto do_native;
@@ -172,6 +177,8 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, 
	u64 status = U64_MAX;

	unsigned long flags;



	trace_hyperv_mmu_flush_tlb_others(cpus, info);



	if (!pcpu_flush_ex || !hv_hypercall_pg)

		goto do_native;

arch/x86/include/asm/trace/hyperv.h

0 → 100644
+40 −0
Original line number Diff line number Diff line 
#undef TRACE_SYSTEM

#define TRACE_SYSTEM hyperv



#if !defined(_TRACE_HYPERV_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_HYPERV_H



#include <linux/tracepoint.h>



#if IS_ENABLED(CONFIG_HYPERV)



TRACE_EVENT(hyperv_mmu_flush_tlb_others,

	    TP_PROTO(const struct cpumask *cpus,

		     const struct flush_tlb_info *info),

	    TP_ARGS(cpus, info),

	    TP_STRUCT__entry(

		    __field(unsigned int, ncpus)

		    __field(struct mm_struct *, mm)

		    __field(unsigned long, addr)

		    __field(unsigned long, end)

		    ),

	    TP_fast_assign(__entry->ncpus = cpumask_weight(cpus);

			   __entry->mm = info->mm;

			   __entry->addr = info->start;

			   __entry->end = info->end;

		    ),

	    TP_printk("ncpus %d mm %p addr %lx, end %lx",

		      __entry->ncpus, __entry->mm,

		      __entry->addr, __entry->end)

	);



#endif /* CONFIG_HYPERV */



#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH asm/trace/

#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_FILE hyperv

#endif /* _TRACE_HYPERV_H */



/* This part must be outside protection */

#include <trace/define_trace.h>