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[204.195.22.127]) by smtp.gmail.com with ESMTPSA id 193sm22506485pfc.59.2019.10.15.09.53.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Oct 2019 09:53:39 -0700 (PDT) Date: Tue, 15 Oct 2019 09:53:32 -0700 From: Stephen Hemminger To: Joyce Kong Cc: dev@dpdk.org, nd@arm.com, thomas@monjalon.net, jerinj@marvell.com, ravi1.kumar@amd.com, xuanziyang2@huawei.com, cloud.wangxiaoyun@huawei.com, zhouguoyang@huawei.com, rmody@marvell.com, shshaikh@marvell.com, honnappa.nagarahalli@arm.com, gavin.hu@arm.com Message-ID: <20191015095332.6c4934eb@hermes.lan> In-Reply-To: <1571125801-45773-2-git-send-email-joyce.kong@arm.com> References: <1571125801-45773-1-git-send-email-joyce.kong@arm.com> <1571125801-45773-2-git-send-email-joyce.kong@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v1 1/5] lib/eal: implement the family of rte bit operation APIs X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Tue, 15 Oct 2019 15:49:57 +0800 Joyce Kong wrote: > +static inline void > +rte_set_bit(unsigned int nr, unsigned long *addr) > +{ > + __atomic_fetch_or(addr, (1UL << nr), __ATOMIC_ACQ_REL); > +} > + > +static inline void > +rte_clear_bit(int nr, unsigned long *addr) > +{ > + __atomic_fetch_and(addr, ~(1UL << nr), __ATOMIC_ACQ_REL); > +} > + > +static inline int > +rte_test_bit(int nr, unsigned long *addr) > +{ > + int res; > + rte_mb(); > + res = ((*addr) & (1UL << nr)) != 0; > + rte_mb(); > + > + return res; > +} > + > +static inline int > +rte_test_and_set_bit(int nr, unsigned long *addr) > +{ > + unsigned long mask = (1UL << nr); > + > + return __atomic_fetch_or(addr, mask, __ATOMIC_ACQ_REL) & mask; > +} > + > +static inline int > +rte_test_and_clear_bit(int nr, unsigned long *addr) > +{ > + unsigned long mask = (1UL << nr); > + > + return __atomic_fetch_and(addr, ~mask, __ATOMIC_ACQ_REL) & mask; > +} These functions need to be part of API, and have doxygen comments?