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authorOlaf Hering <ohering@suse.de>2017-10-20 12:20:33 +0200
committerOlaf Hering <ohering@suse.de>2017-10-20 12:23:29 +0200
commit640b652b2d72c3096e9f431c31af50058298cfec (patch)
tree0504e980e8ec2e69684b8671f46fe83d40765565
parentc581b355f1e7611c8e381f2be262b9d3b86b201e (diff)
tracing/hyper-v: Trace hyperv_mmu_flush_tlb_others()
-rw-r--r--MAINTAINERS1
-rw-r--r--arch/x86/hyperv/mmu.c7
-rw-r--r--arch/x86/include/asm/trace/hyperv.h40
3 files changed, 48 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index fc6b40328f45..336eec0f140e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6157,6 +6157,7 @@ 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
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c
index 43dfd4852472..721ba933a691 100644
--- a/arch/x86/hyperv/mmu.c
+++ b/arch/x86/hyperv/mmu.c
@@ -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 @@ struct mm_struct *mm, unsigned long start, unsigned long end)
u64 status = U64_MAX;
unsigned long flags;
+ trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end);
+
if (!pcpu_flush || !hv_hypercall_pg)
goto do_native;
@@ -172,6 +177,8 @@ struct mm_struct *mm, unsigned long start, unsigned long end)
u64 status = U64_MAX;
unsigned long flags;
+ trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end);
+
if (!pcpu_flush_ex || !hv_hypercall_pg)
goto do_native;
diff --git a/arch/x86/include/asm/trace/hyperv.h b/arch/x86/include/asm/trace/hyperv.h
new file mode 100644
index 000000000000..098ab4394cbd
--- /dev/null
+++ b/arch/x86/include/asm/trace/hyperv.h
@@ -0,0 +1,40 @@
+#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,
+ struct mm_struct *mm, unsigned long start, unsigned long end),
+ TP_ARGS(cpus, mm, start, 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 = start;
+ __entry->end = 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>