From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753633AbdDLKoM (ORCPT ); Wed, 12 Apr 2017 06:44:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44598 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753479AbdDLKoF (ORCPT ); Wed, 12 Apr 2017 06:44:05 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com B67E8C04B95D 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 B67E8C04B95D From: Vitaly Kuznetsov To: devel@linuxdriverproject.org, x86@kernel.org Cc: 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 Subject: [PATCH v2 10/10] tracing/hyper-v: trace hyperv_mmu_flush_tlb_others() Date: Wed, 12 Apr 2017 12:43:26 +0200 Message-Id: <20170412104326.19126-11-vkuznets@redhat.com> In-Reply-To: <20170412104326.19126-1-vkuznets@redhat.com> References: <20170412104326.19126-1-vkuznets@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 12 Apr 2017 10:44:00 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- Changes since v1: - Move hyperv.h to arch-specific place (Steven Rostedt) - Add IS_ENABLED(CONFIG_HYPERV) to hyperv.h --- MAINTAINERS | 1 + arch/x86/hyperv/mmu.c | 8 ++++++++ arch/x86/include/asm/trace/hyperv.h | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) create mode 100644 arch/x86/include/asm/trace/hyperv.h diff --git a/MAINTAINERS b/MAINTAINERS index ef0d61c..c10c4ee 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6047,6 +6047,7 @@ 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 c9cecb3..f6b5211 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -6,6 +6,10 @@ #include #include #include +#include + +#define CREATE_TRACE_POINTS +DEFINE_TRACE(hyperv_mmu_flush_tlb_others); /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */ struct hv_flush_pcpu { @@ -75,6 +79,8 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus, u64 status = -1ULL; int cpu, vcpu, gva_n, max_gvas; + trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end); + if (!pcpu_flush || !hv_hypercall_pg) goto do_native; @@ -161,6 +167,8 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, u64 status = -1ULL; int nr_bank = 0, max_gvas, gva_n; + 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..e46a351 --- /dev/null +++ b/arch/x86/include/asm/trace/hyperv.h @@ -0,0 +1,34 @@ +#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 */ + +#endif /* _TRACE_HYPERV_H */ + +/* This part must be outside protection */ +#include -- 2.9.3