On Fri, 14 Jul 2017 14:44:42 +0200 Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> wrote: > 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> > Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> > Reviewed-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx> Reviewed-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> (comment below) > --- > MAINTAINERS | 1 + > arch/x86/hyperv/mmu.c | 7 +++++++ > arch/x86/include/asm/trace/hyperv.h | 40 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 48 insertions(+) > create mode 100644 arch/x86/include/asm/trace/hyperv.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index d8eab9322ba2..4a491f3b8cfd 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -6276,6 +6276,7 @@ M: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx> > L: devel@xxxxxxxxxxxxxxxxxxxxxx > 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 6fb84c4c3ee7..41bff87fb055 100644 > --- a/arch/x86/hyperv/mmu.c > +++ b/arch/x86/hyperv/mmu.c > @@ -8,6 +8,9 @@ > #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; > @@ -101,6 +104,8 @@ 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; > > @@ -170,6 +175,8 @@ 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; > > diff --git a/arch/x86/include/asm/trace/hyperv.h b/arch/x86/include/asm/trace/hyperv.h > new file mode 100644 > index 000000000000..4253bca99989 > --- /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, > + 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/ Sometimes adding the include path in the make file may be easier. But this is fine too. -- Steve > +#undef TRACE_INCLUDE_FILE > +#define TRACE_INCLUDE_FILE hyperv > +#endif /* _TRACE_HYPERV_H */ > + > +/* This part must be outside protection */ > +#include <trace/define_trace.h> _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel