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[204.195.123.141]) by smtp.gmail.com with ESMTPSA id l4-20020a170902eb0400b001c61901ed2esm4232051plb.219.2023.11.13.09.06.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Nov 2023 09:06:15 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , liang.j.ma@intel.com, Liang Ma , Peter Mccarthy , =?utf-8?q?Se=C3=A1n_Harte?= Subject: [PATCH v2 1/3] event/opdl: fix non-constant compile time assertion Date: Mon, 13 Nov 2023 09:06:03 -0800 Message-Id: <20231113170605.408281-2-stephen@networkplumber.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231113170605.408281-1-stephen@networkplumber.org> References: <20231111172153.57461-1-stephen@networkplumber.org> <20231113170605.408281-1-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 RTE_BUILD_BUG_ON() was being used with a non-constant value. The inline function rte_is_power_of_2() is not constant since inline expansion happens later in the compile process. Replace it with macro which will be constant. Fixes: 4236ce9bf5bf ("event/opdl: add OPDL ring infrastructure library") Cc: liang.j.ma@intel.com Signed-off-by: Stephen Hemminger Acked-by: Bruce Richardson Acked-by: Tyler Retzlaff --- drivers/event/opdl/opdl_ring.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/event/opdl/opdl_ring.c b/drivers/event/opdl/opdl_ring.c index 69392b56bbec..24e0bbe3222d 100644 --- a/drivers/event/opdl/opdl_ring.c +++ b/drivers/event/opdl/opdl_ring.c @@ -31,6 +31,9 @@ #define OPDL_OPA_MASK (0xFF) #define OPDL_OPA_OFFSET (0x38) +/* Equivalent to rte_is_power_of_2() but as macro. */ +#define IS_POWER_OF_2(x) (((x) & ((x) - 1)) == 0) + /* Types of dependency between stages */ enum dep_type { DEP_NONE = 0, /* no dependency */ @@ -910,7 +913,7 @@ opdl_ring_create(const char *name, uint32_t num_slots, uint32_t slot_size, RTE_CACHE_LINE_MASK) != 0); RTE_BUILD_BUG_ON((offsetof(struct opdl_ring, slots) & RTE_CACHE_LINE_MASK) != 0); - RTE_BUILD_BUG_ON(!rte_is_power_of_2(OPDL_DISCLAIMS_PER_LCORE)); + RTE_BUILD_BUG_ON(!IS_POWER_OF_2(OPDL_DISCLAIMS_PER_LCORE)); /* Parameter checking */ if (name == NULL) {