From patchwork Wed Feb 17 13:45:12 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avi Kivity X-Patchwork-Id: 79935 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o1HDpfUe001342 for ; Wed, 17 Feb 2010 13:51:41 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933962Ab0BQNpg (ORCPT ); Wed, 17 Feb 2010 08:45:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:11044 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932951Ab0BQNpd (ORCPT ); Wed, 17 Feb 2010 08:45:33 -0500 Received: from int-mx08.intmail.prod.int.phx2.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o1HDjXgW001238 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 17 Feb 2010 08:45:33 -0500 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by int-mx08.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o1HDjVdZ007859; Wed, 17 Feb 2010 08:45:31 -0500 Received: from localhost.localdomain (file.tlv.redhat.com [10.35.255.8]) by cleopatra.tlv.redhat.com (Postfix) with ESMTP id A75CB25005A; Wed, 17 Feb 2010 15:45:30 +0200 (IST) From: Avi Kivity To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 02/20] KVM: MMU: Add tracepoint for guest page aging Date: Wed, 17 Feb 2010 15:45:12 +0200 Message-Id: <1266414330-27444-3-git-send-email-avi@redhat.com> In-Reply-To: <1266414330-27444-1-git-send-email-avi@redhat.com> References: <1266414330-27444-1-git-send-email-avi@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.21 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Wed, 17 Feb 2010 13:51:41 +0000 (UTC) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index b8da671..7397932 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -151,6 +151,9 @@ module_param(oos_shadow, bool, 0644); #define ACC_USER_MASK PT_USER_MASK #define ACC_ALL (ACC_EXEC_MASK | ACC_WRITE_MASK | ACC_USER_MASK) +#include + +#undef TRACE_INCLUDE_FILE #define CREATE_TRACE_POINTS #include "mmutrace.h" @@ -792,6 +795,7 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva, unsigned long data)) { int i, j; + int ret; int retval = 0; struct kvm_memslots *slots; @@ -806,16 +810,17 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva, if (hva >= start && hva < end) { gfn_t gfn_offset = (hva - start) >> PAGE_SHIFT; - retval |= handler(kvm, &memslot->rmap[gfn_offset], - data); + ret = handler(kvm, &memslot->rmap[gfn_offset], data); for (j = 0; j < KVM_NR_PAGE_SIZES - 1; ++j) { int idx = gfn_offset; idx /= KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL + j); - retval |= handler(kvm, + ret |= handler(kvm, &memslot->lpage_info[j][idx].rmap_pde, data); } + trace_kvm_age_page(hva, memslot, ret); + retval |= ret; } } diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index 8abdc12..b17d49d 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -164,6 +164,28 @@ TRACE_EVENT(kvm_fpu, TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol)) ); +TRACE_EVENT(kvm_age_page, + TP_PROTO(ulong hva, struct kvm_memory_slot *slot, int ref), + TP_ARGS(hva, slot, ref), + + TP_STRUCT__entry( + __field( u64, hva ) + __field( u64, gfn ) + __field( u8, referenced ) + ), + + TP_fast_assign( + __entry->hva = hva; + __entry->gfn = + slot->base_gfn + ((hva - slot->userspace_addr) >> PAGE_SHIFT); + __entry->referenced = ref; + ), + + TP_printk("hva %llx gfn %llx %s", + __entry->hva, __entry->gfn, + __entry->referenced ? "YOUNG" : "OLD") +); + #endif /* _TRACE_KVM_MAIN_H */ /* This part must be outside protection */