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Tue, 20 Jul 2021 16:34:31 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id e8sm3354295wrc.6.2021.07.20.16.34.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jul 2021 16:34:26 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id DDC841FFAB; Wed, 21 Jul 2021 00:27:05 +0100 (BST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Subject: [PATCH v1 22/29] plugins/cache: limited the scope of a mutex lock Date: Wed, 21 Jul 2021 00:26:56 +0100 Message-Id: <20210720232703.10650-23-alex.bennee@linaro.org> X-Mailer: git-send-email 2.32.0.264.g75ae10bc75 In-Reply-To: <20210720232703.10650-1-alex.bennee@linaro.org> References: <20210720232703.10650-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x332.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fam@euphon.net, berrange@redhat.com, f4bug@amsat.org, stefanha@redhat.com, crosa@redhat.com, pbonzini@redhat.com, Mahmoud Mandour , Alexandre Iooss , =?UTF-8?q?Alex=20Benn=C3=A9e?= , aurelien@aurel32.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Mahmoud Mandour It's not necessary to lock the address translation portion of the vcpu_mem_access callback. Signed-off-by: Mahmoud Mandour Reviewed-by: Alex Bennée Message-Id: <20210714172151.8494-3-ma.mandourr@gmail.com> Signed-off-by: Alex Bennée --- contrib/plugins/cache.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/contrib/plugins/cache.c b/contrib/plugins/cache.c index 4a71602639..695fb969dc 100644 --- a/contrib/plugins/cache.c +++ b/contrib/plugins/cache.c @@ -355,15 +355,14 @@ static void vcpu_mem_access(unsigned int vcpu_index, qemu_plugin_meminfo_t info, struct qemu_plugin_hwaddr *hwaddr; InsnData *insn; - g_mutex_lock(&mtx); hwaddr = qemu_plugin_get_hwaddr(info, vaddr); if (hwaddr && qemu_plugin_hwaddr_is_io(hwaddr)) { - g_mutex_unlock(&mtx); return; } effective_addr = hwaddr ? qemu_plugin_hwaddr_phys_addr(hwaddr) : vaddr; + g_mutex_lock(&mtx); if (!access_cache(dcache, effective_addr)) { insn = (InsnData *) userdata; insn->dmisses++; -- 2.32.0.264.g75ae10bc75