Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751856AbdFIN26 (ORCPT ); Fri, 9 Jun 2017 09:28:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52048 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751626AbdFIN2x (ORCPT ); Fri, 9 Jun 2017 09:28:53 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4E2A6C04B94B Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=vkuznets@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 4E2A6C04B94B From: Vitaly Kuznetsov To: devel@linuxdriverproject.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org, "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Steven Rostedt , Jork Loeser , Simon Xiao , Andy Lutomirski , Andy Shevchenko Subject: [PATCH v8 10/10] tracing/hyper-v: trace hyperv_mmu_flush_tlb_others() Date: Fri, 9 Jun 2017 15:27:36 +0200 Message-Id: <20170609132736.13699-11-vkuznets@redhat.com> In-Reply-To: <20170609132736.13699-1-vkuznets@redhat.com> References: <20170609132736.13699-1-vkuznets@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 09 Jun 2017 13:28:48 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3087 Lines: 101 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 --- MAINTAINERS | 1 + arch/x86/hyperv/mmu.c | 7 +++++++ arch/x86/include/asm/trace/hyperv.h | 38 +++++++++++++++++++++++++++++++++++++ 3 files changed, 46 insertions(+) create mode 100644 arch/x86/include/asm/trace/hyperv.h diff --git a/MAINTAINERS b/MAINTAINERS index e3f44fd..001614b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6168,6 +6168,7 @@ M: Stephen Hemminger 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 0712111..cb35453 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -8,6 +8,9 @@ #include #include +#define CREATE_TRACE_POINTS +#include + /* 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, mm, start, end); + 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, 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 0000000..e44ece1 --- /dev/null +++ b/arch/x86/include/asm/trace/hyperv.h @@ -0,0 +1,38 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM hyperv + +#if !defined(_TRACE_HYPERV_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_HYPERV_H + +#include + +#if IS_ENABLED(CONFIG_HYPERV) + +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 /* 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 -- 2.9.4