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[204.195.123.141]) by smtp.gmail.com with ESMTPSA id 4-20020a170902c24400b001d0a6f31519sm10749593plg.188.2023.12.13.08.38.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Dec 2023 08:38:32 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger Subject: [PATCH v3 02/37] log: add rte_log_dp() Date: Wed, 13 Dec 2023 08:35:36 -0800 Message-ID: <20231213163820.894987-3-stephen@networkplumber.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231213163820.894987-1-stephen@networkplumber.org> References: <20231213014408.612051-1-stephen@networkplumber.org> <20231213163820.894987-1-stephen@networkplumber.org> MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Add a new macro for logging in datapath using a logtype. The existing macro RTE_LOG_DP() takes log type suffix (i.e. PMD) like RTE_LOG(). This macro allows using a dynamic type. Ideally, rte_log_dp() could be an always_inline function but GCC and Clang will not inline a function with variable number of arguments. Therefore it has to be a macro. Signed-off-by: Stephen Hemminger --- lib/log/rte_log.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/lib/log/rte_log.h b/lib/log/rte_log.h index bbbb051c20e2..4f69c05db91d 100644 --- a/lib/log/rte_log.h +++ b/lib/log/rte_log.h @@ -355,6 +355,27 @@ int rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap) RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__) : \ 0) +/** + * Generates a log message for data path. + * + * Similar to rte_log(), except that it gets optimized away + * if the RTE_LOG_DP_LEVEL configuration option is lower than the log + * level argument. + * + * @param l + * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8). + * @param t + * The log type, for example, RTE_LOGTYPE_EAL. + * @param ... + * The format string, as in printf(3), followed by the variable arguments + * required by the format. + */ +#define rte_log_dp(l, t, ...) \ + do { \ + if ((l) <= RTE_LOG_DP_LEVEL) \ + rte_log(l, t, __VA_ARGS__); \ + } while (0) + #define RTE_LOG_REGISTER_IMPL(type, name, level) \ int type; \ RTE_INIT(__##type) \