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Commit 58ec5e9c authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Thomas Gleixner
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x86/hyper-v: Trace PV IPI send 



Trace Hyper-V PV IPIs the same way we do PV TLB flush.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: devel@linuxdriverproject.org
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Tianyu Lan <Tianyu.Lan@microsoft.com>
Cc: "Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>
Link: https://lkml.kernel.org/r/20180622170625.30688-5-vkuznets@redhat.com
parent 4bd06060

arch/x86/hyperv/hv_apic.c

+4 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 
#include <asm/mshyperv.h>

#include <asm/apic.h>



#include <asm/trace/hyperv.h>



static struct apic orig_apic;



static u64 hv_apic_icr_read(void)
@@ -134,6 +136,8 @@ static bool __send_ipi_mask(const struct cpumask *mask, int vector) 
	struct ipi_arg_non_ex ipi_arg;

	int ret = 1;



	trace_hyperv_send_ipi_mask(mask, vector);



	if (cpumask_empty(mask))

		return true;

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

+15 −0
Original line number Diff line number Diff line
@@ -28,6 +28,21 @@ TRACE_EVENT(hyperv_mmu_flush_tlb_others, 
		      __entry->addr, __entry->end)

	);



TRACE_EVENT(hyperv_send_ipi_mask,

	    TP_PROTO(const struct cpumask *cpus,

		     int vector),

	    TP_ARGS(cpus, vector),

	    TP_STRUCT__entry(

		    __field(unsigned int, ncpus)

		    __field(int, vector)

		    ),

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

			   __entry->vector = vector;

		    ),

	    TP_printk("ncpus %d vector %x",

		      __entry->ncpus, __entry->vector)

	);



#endif /* CONFIG_HYPERV */



#undef TRACE_INCLUDE_PATH