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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id n62-20020acaef41000000b002ef646e6690sm4610331oih.53.2022.03.26.06.26.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Mar 2022 06:26:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=aDLKHovI8bxO2d9YjJwk21iI6jYdGi7gzankaymnjFw=; b=iJP4RDwEAHqJze+/ngkwoyGpNYqp9ae9Fq4hoWkXqnpIpHSZcUMrxAdKD9FTDHWRU8 s9NyOYP9LXk6AlIz8VZycYZvLtzbqKb4gW2M2yQsm0vbqtex141DxvRnZdJcSimClcBo THkfIeCnvo0AtpQRSOImXr2tJUo3PxjsGctk8yFzUoNYon+FJRNo0AHCCb//ZXO5ydiN zRhb/07rF2+f0dKT9m5BbY6ic2/s2S9Dvhx9wlODId8hS+O6SeR5UtM9Hv7uIse2IzfL r9RJ4ja7ThXCFQqjQgrl8Xk+v0mKCD2+gVlQ4lhy4O1A6j6/sg5AGMTN12qi8SZ933DJ nJbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=aDLKHovI8bxO2d9YjJwk21iI6jYdGi7gzankaymnjFw=; b=O0IhjoA0goWHA4oQofncdxdYixXDUVxi2u7p161dQf0U7rzthZ8gVnoKSDEcthtaSs fpuBT1wxI0uHOAuCeYH3G3a88rZ2pWfQgG112HS3s+SLDCx4OsGq9scBOaUMzkrgUpJx 1AK5lJtcNwbR6DEihl1wcABaTvwvv0kAs14qymgLDZne4OM67GoPl/hWum+zPW/CCQ0Y gBhnICgijG6qMOVpNfQXoImrK4tnVWaV7yaqT5VvLZe1YzFBiSxGvBLDBMAqyVRxoBi8 g/1HUCxgyFlfHJY2BNNoIX5RNOqOW7I4ILvoQwCU/JBsvmi3kGaABR6ZfE2Ig5FxG/Qz QdeA== X-Gm-Message-State: AOAM532lVikDdgPbvpV1jbG32pLr0rxjdwR/SuzCaAvkfiaTk2hJMxwU 9MtucnMe7fU9YsTXc9UcoJTuyPYHV46xnqHa X-Google-Smtp-Source: ABdhPJyllrpK756Cshvv5df9dHdTJ8O+Kzwd6amZ7IHcw+tVziofnnmA+hD7OCWxzD0G+Q2qZH4RCg== X-Received: by 2002:a05:6870:4341:b0:d3:1412:8ecb with SMTP id x1-20020a056870434100b000d314128ecbmr7282678oah.36.1648301175855; Sat, 26 Mar 2022 06:26:15 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 16/39] util/log: Use qemu_log_trylock/unlock in qemu_log Date: Sat, 26 Mar 2022 07:25:11 -0600 Message-Id: <20220326132534.543738-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220326132534.543738-1-richard.henderson@linaro.org> References: <20220326132534.543738-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2001:4860:4864:20::2c (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::2c; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x2c.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 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, PDS_HP_HELO_NORDNS=0.659, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1648303360522100001 Avoid using QemuLogFile and RCU directly. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- util/log.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/util/log.c b/util/log.c index 6b7b358573..090bc3bc39 100644 --- a/util/log.c +++ b/util/log.c @@ -62,23 +62,22 @@ void qemu_log_unlock(FILE *fd) /* Return the number of characters emitted. */ int qemu_log(const char *fmt, ...) { + FILE *f =3D qemu_log_trylock(); int ret =3D 0; - QemuLogFile *logfile; =20 - rcu_read_lock(); - logfile =3D qatomic_rcu_read(&qemu_logfile); - if (logfile) { + if (f) { va_list ap; + va_start(ap, fmt); - ret =3D vfprintf(logfile->fd, fmt, ap); + ret =3D vfprintf(f, fmt, ap); va_end(ap); + qemu_log_unlock(f); =20 /* Don't pass back error results. */ if (ret < 0) { ret =3D 0; } } - rcu_read_unlock(); return ret; } =20 --=20 2.25.1