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Mon, 15 Jun 2020 15:16:20 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyPmau1M6QKWc6GHncKWYMz7eFkgSphlbSZomzioBm+KJn2NkIvBOjAdW7fQwymnkxPP7AAIg== X-Received: by 2002:a0c:b256:: with SMTP id k22mr4540360qve.115.1592259380012; Mon, 15 Jun 2020 15:16:20 -0700 (PDT) Received: from xz-x1.hitronhub.home ([2607:9880:19c0:32::2]) by smtp.gmail.com with ESMTPSA id w13sm12351509qkb.91.2020.06.15.15.16.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 15:16:19 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org Subject: [PATCH 06/25] mm/arm64: Use mm_fault_accounting() Date: Mon, 15 Jun 2020 18:15:48 -0400 Message-Id: <20200615221607.7764-7-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200615221607.7764-1-peterx@redhat.com> References: <20200615221607.7764-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200615_151623_553062_9F5C6C09 X-CRM114-Status: GOOD ( 13.92 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [207.211.31.120 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [207.211.31.120 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrea Arcangeli , Will Deacon , Catalin Marinas , peterx@redhat.com, linux-arm-kernel@lists.infradead.org, Andrew Morton , Linus Torvalds , Gerald Schaefer Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Use the new mm_fault_accounting() helper for page fault accounting. CC: Catalin Marinas CC: Will Deacon CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Peter Xu --- arch/arm64/mm/fault.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index c9cedc0432d2..09af7d7a60ec 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -484,8 +484,6 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, addr, esr, regs); } - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr); - /* * As per x86, we may deadlock here. However, since the kernel only * validly references user space from well defined areas of the code, @@ -535,20 +533,9 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, VM_FAULT_BADACCESS)))) { /* * Major/minor page fault accounting is only done - * once. If we go through a retry, it is extremely - * likely that the page will be found in page cache at - * that point. + * once. */ - if (major) { - current->maj_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, - addr); - } else { - current->min_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, - addr); - } - + mm_fault_accounting(current, regs, address, major); return 0; }