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: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
MAINTAINERS | 1 +
arch/x86/hyperv/mmu.c | 6 ++++++
include/trace/events/hyperv.h | 30 ++++++++++++++++++++++++++++++
3 files changed, 37 insertions(+)
create mode 100644 include/trace/events/hyperv.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 819d5e8..9785d98 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6057,6 +6057,7 @@ F: drivers/scsi/storvsc_drv.c
F: drivers/uio/uio_hv_generic.c
F: drivers/video/fbdev/hyperv_fb.c
F: include/linux/hyperv.h
+F: include/trace/events/hyperv.h
F: tools/hv/
F: Documentation/ABI/stable/sysfs-bus-vmbus
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c
index fb487cb..61f2a5b 100644
--- a/arch/x86/hyperv/mmu.c
+++ b/arch/x86/hyperv/mmu.c
@@ -5,6 +5,10 @@
#include <asm/tlbflush.h>
#include <asm/msr.h>
#include <asm/fpu/api.h>
+#include <trace/events/hyperv.h>
+
+#define CREATE_TRACE_POINTS
+DEFINE_TRACE(hyperv_mmu_flush_tlb_others);
/*
* Arbitrary number; we need to pre-allocate per-cpu struct for doing TLB
@@ -36,6 +40,8 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus,
u64 status = -1ULL;
int cpu, vcpu, gva_n;
+ trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end);
+
if (!pcpu_flush || !hv_hypercall_pg)
goto do_native;
diff --git a/include/trace/events/hyperv.h b/include/trace/events/hyperv.h
new file mode 100644
index 0000000..e37e72d
--- /dev/null
+++ b/include/trace/events/hyperv.h
@@ -0,0 +1,30 @@
+#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>
+
+TRACE_EVENT(hyperv_mmu_flush_tlb_others,
+ TP_PROTO(const struct cpumask *cpus, struct mm_struct *mm,
+ unsigned long addr, unsigned long end),
+ TP_ARGS(cpus, mm, addr, end),
+ 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 = mm;
+ __entry->addr = addr,
+ __entry->end = end),
+ TP_printk("ncpus %d mm %p addr %lx, end %lx",
+ __entry->ncpus, __entry->mm, __entry->addr, __entry->end)
+ );
+
+#endif /* _TRACE_HYPERV_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
--
2.9.3
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
