Commit-ID: 773b79f7a7c7839fb9d09c0e206734173a8b0a6b Gitweb: http://git.kernel.org/tip/773b79f7a7c7839fb9d09c0e206734173a8b0a6b Author: Vitaly Kuznetsov <vkuzn...@redhat.com> AuthorDate: Wed, 2 Aug 2017 18:09:21 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 31 Aug 2017 14:20:37 +0200
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: Vitaly Kuznetsov <vkuzn...@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com> Reviewed-by: Stephen Hemminger <sthem...@microsoft.com> Reviewed-by: Steven Rostedt (VMware) <rost...@goodmis.org> Cc: Andy Lutomirski <l...@kernel.org> Cc: Haiyang Zhang <haiya...@microsoft.com> Cc: Jork Loeser <jork.loe...@microsoft.com> Cc: K. Y. Srinivasan <k...@microsoft.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Simon Xiao <six...@microsoft.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: de...@linuxdriverproject.org Link: http://lkml.kernel.org/r/20170802160921.21791-10-vkuzn...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- MAINTAINERS | 1 + arch/x86/hyperv/mmu.c | 7 +++++++ arch/x86/include/asm/trace/hyperv.h | 40 +++++++++++++++++++++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index b3eadf3..9fcffdf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6258,6 +6258,7 @@ M: Stephen Hemminger <sthem...@microsoft.com> L: de...@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 51b44be..39e7f6e 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 @@ 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; diff --git a/arch/x86/include/asm/trace/hyperv.h b/arch/x86/include/asm/trace/hyperv.h new file mode 100644 index 0000000..4253bca --- /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/ +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE hyperv +#endif /* _TRACE_HYPERV_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h>
