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McKenney" To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, akiyks@gmail.com, linux-doc@vger.kernel.org, kernel-team@meta.com, "Paul E. McKenney" , Will Deacon , Peter Zijlstra , Boqun Feng , Mark Rutland Subject: [PATCH locking/atomic 16/19] locking/atomic: Add kernel-doc header for arch_${atomic}_${pfx}${name}${sfx} Date: Wed, 10 May 2023 11:17:14 -0700 Message-Id: <20230510181717.2200934-16-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <19135936-06d7-4705-8bc8-bb31c2a478ca@paulmck-laptop> References: <19135936-06d7-4705-8bc8-bb31c2a478ca@paulmck-laptop> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765532475507703233?= X-GMAIL-MSGID: =?utf-8?q?1765532475507703233?= Add kernel-doc header template for arch_${atomic}_${pfx}${name}${sfx} function family with the help of my good friend awk, as encapsulated in acqrel.sh. Signed-off-by: Paul E. McKenney Cc: Will Deacon Cc: Peter Zijlstra Cc: Boqun Feng Cc: Mark Rutland --- include/linux/atomic/atomic-arch-fallback.h | 268 +++++++++++++++++++- scripts/atomic/fallbacks/fence | 2 + 2 files changed, 269 insertions(+), 1 deletion(-) diff --git a/include/linux/atomic/atomic-arch-fallback.h b/include/linux/atomic/atomic-arch-fallback.h index ec6821b4bbc1..41aa94f0aacd 100644 --- a/include/linux/atomic/atomic-arch-fallback.h +++ b/include/linux/atomic/atomic-arch-fallback.h @@ -329,6 +329,14 @@ arch_atomic_add_return_release(int i, atomic_t *v) #endif #ifndef arch_atomic_add_return +/** + * arch_atomic_add_return - Atomic add with full ordering + * @i: value to add + * @v: pointer of type atomic_t + * + * Atomically add @i to @v using full ordering. + * Return new value. + */ static __always_inline int arch_atomic_add_return(int i, atomic_t *v) { @@ -387,6 +395,14 @@ arch_atomic_fetch_add_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_add +/** + * arch_atomic_fetch_add - Atomic add with full ordering + * @i: value to add + * @v: pointer of type atomic_t + * + * Atomically add @i to @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_add(int i, atomic_t *v) { @@ -445,6 +461,14 @@ arch_atomic_sub_return_release(int i, atomic_t *v) #endif #ifndef arch_atomic_sub_return +/** + * arch_atomic_sub_return - Atomic sub with full ordering + * @i: value to subtract + * @v: pointer of type atomic_t + * + * Atomically subtract @i from @v using full ordering. + * Return new value. + */ static __always_inline int arch_atomic_sub_return(int i, atomic_t *v) { @@ -503,6 +527,14 @@ arch_atomic_fetch_sub_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_sub +/** + * arch_atomic_fetch_sub - Atomic sub with full ordering + * @i: value to subtract + * @v: pointer of type atomic_t + * + * Atomically subtract @i from @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_sub(int i, atomic_t *v) { @@ -642,6 +674,13 @@ arch_atomic_inc_return_release(atomic_t *v) #endif #ifndef arch_atomic_inc_return +/** + * arch_atomic_inc_return - Atomic inc with full ordering + * @v: pointer of type atomic_t + * + * Atomically increment @v using full ordering. + * Return new value. + */ static __always_inline int arch_atomic_inc_return(atomic_t *v) { @@ -765,6 +804,13 @@ arch_atomic_fetch_inc_release(atomic_t *v) #endif #ifndef arch_atomic_fetch_inc +/** + * arch_atomic_fetch_inc - Atomic inc with full ordering + * @v: pointer of type atomic_t + * + * Atomically increment @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_inc(atomic_t *v) { @@ -904,6 +950,13 @@ arch_atomic_dec_return_release(atomic_t *v) #endif #ifndef arch_atomic_dec_return +/** + * arch_atomic_dec_return - Atomic dec with full ordering + * @v: pointer of type atomic_t + * + * Atomically decrement @v using full ordering. + * Return new value. + */ static __always_inline int arch_atomic_dec_return(atomic_t *v) { @@ -1027,6 +1080,13 @@ arch_atomic_fetch_dec_release(atomic_t *v) #endif #ifndef arch_atomic_fetch_dec +/** + * arch_atomic_fetch_dec - Atomic dec with full ordering + * @v: pointer of type atomic_t + * + * Atomically decrement @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_dec(atomic_t *v) { @@ -1085,6 +1145,14 @@ arch_atomic_fetch_and_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_and +/** + * arch_atomic_fetch_and - Atomic and with full ordering + * @i: value to AND + * @v: pointer of type atomic_t + * + * Atomically AND @i with @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_and(int i, atomic_t *v) { @@ -1231,6 +1299,14 @@ arch_atomic_fetch_andnot_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_andnot +/** + * arch_atomic_fetch_andnot - Atomic andnot with full ordering + * @i: value to complement then AND + * @v: pointer of type atomic_t + * + * Atomically complement then AND @i with @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_andnot(int i, atomic_t *v) { @@ -1289,6 +1365,14 @@ arch_atomic_fetch_or_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_or +/** + * arch_atomic_fetch_or - Atomic or with full ordering + * @i: value to OR + * @v: pointer of type atomic_t + * + * Atomically OR @i with @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_or(int i, atomic_t *v) { @@ -1347,6 +1431,14 @@ arch_atomic_fetch_xor_release(int i, atomic_t *v) #endif #ifndef arch_atomic_fetch_xor +/** + * arch_atomic_fetch_xor - Atomic xor with full ordering + * @i: value to XOR + * @v: pointer of type atomic_t + * + * Atomically XOR @i with @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_fetch_xor(int i, atomic_t *v) { @@ -1405,6 +1497,14 @@ arch_atomic_xchg_release(atomic_t *v, int i) #endif #ifndef arch_atomic_xchg +/** + * arch_atomic_xchg - Atomic xchg with full ordering + * @v: pointer of type atomic_t + * @i: value to exchange + * + * Atomically exchange @i with @v using full ordering. + * Return old value. + */ static __always_inline int arch_atomic_xchg(atomic_t *v, int i) { @@ -1471,6 +1571,18 @@ arch_atomic_cmpxchg_release(atomic_t *v, int old, int new) #endif #ifndef arch_atomic_cmpxchg +/** + * arch_atomic_cmpxchg - Atomic cmpxchg with full ordering + * @v: pointer of type atomic_t + * @old: desired old value to match + * @new: new value to put in + * + * Atomically compares @new to *@v, and if equal, + * stores @new to *@v, providing full ordering. + * Returns the old value *@v regardless of the result of + * the comparison. Therefore, if the return value is not + * equal to @old, the cmpxchg operation failed. + */ static __always_inline int arch_atomic_cmpxchg(atomic_t *v, int old, int new) { @@ -1632,6 +1744,18 @@ arch_atomic_try_cmpxchg_release(atomic_t *v, int *old, int new) #endif #ifndef arch_atomic_try_cmpxchg +/** + * arch_atomic_try_cmpxchg - Atomic try_cmpxchg with full ordering + * @v: pointer of type atomic_t + * @old: desired old value to match + * @new: new value to put in + * + * Atomically compares @new to *@v, and if equal, + * stores @new to *@v, providing full ordering. + * Returns @true if the cmpxchg operation succeeded, + * and false otherwise. Either way, stores the old + * value of *@v to *@old. + */ static __always_inline bool arch_atomic_try_cmpxchg(atomic_t *v, int *old, int new) { @@ -1815,6 +1939,15 @@ arch_atomic_add_negative_release(int i, atomic_t *v) #endif #ifndef arch_atomic_add_negative +/** + * arch_atomic_add_negative - Atomic add_negative with full ordering + * @i: value to add + * @v: pointer of type atomic_t + * + * Atomically add @i with @v using full ordering. + * Return @true if the result is negative, or @false when + * the result is greater than or equal to zero. + */ static __always_inline bool arch_atomic_add_negative(int i, atomic_t *v) { @@ -2057,6 +2190,14 @@ arch_atomic64_add_return_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_add_return +/** + * arch_atomic64_add_return - Atomic add with full ordering + * @i: value to add + * @v: pointer of type atomic64_t + * + * Atomically add @i to @v using full ordering. + * Return new value. + */ static __always_inline s64 arch_atomic64_add_return(s64 i, atomic64_t *v) { @@ -2115,6 +2256,14 @@ arch_atomic64_fetch_add_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_add +/** + * arch_atomic64_fetch_add - Atomic add with full ordering + * @i: value to add + * @v: pointer of type atomic64_t + * + * Atomically add @i to @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_add(s64 i, atomic64_t *v) { @@ -2173,6 +2322,14 @@ arch_atomic64_sub_return_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_sub_return +/** + * arch_atomic64_sub_return - Atomic sub with full ordering + * @i: value to subtract + * @v: pointer of type atomic64_t + * + * Atomically subtract @i from @v using full ordering. + * Return new value. + */ static __always_inline s64 arch_atomic64_sub_return(s64 i, atomic64_t *v) { @@ -2231,6 +2388,14 @@ arch_atomic64_fetch_sub_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_sub +/** + * arch_atomic64_fetch_sub - Atomic sub with full ordering + * @i: value to subtract + * @v: pointer of type atomic64_t + * + * Atomically subtract @i from @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_sub(s64 i, atomic64_t *v) { @@ -2370,6 +2535,13 @@ arch_atomic64_inc_return_release(atomic64_t *v) #endif #ifndef arch_atomic64_inc_return +/** + * arch_atomic64_inc_return - Atomic inc with full ordering + * @v: pointer of type atomic64_t + * + * Atomically increment @v using full ordering. + * Return new value. + */ static __always_inline s64 arch_atomic64_inc_return(atomic64_t *v) { @@ -2493,6 +2665,13 @@ arch_atomic64_fetch_inc_release(atomic64_t *v) #endif #ifndef arch_atomic64_fetch_inc +/** + * arch_atomic64_fetch_inc - Atomic inc with full ordering + * @v: pointer of type atomic64_t + * + * Atomically increment @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_inc(atomic64_t *v) { @@ -2632,6 +2811,13 @@ arch_atomic64_dec_return_release(atomic64_t *v) #endif #ifndef arch_atomic64_dec_return +/** + * arch_atomic64_dec_return - Atomic dec with full ordering + * @v: pointer of type atomic64_t + * + * Atomically decrement @v using full ordering. + * Return new value. + */ static __always_inline s64 arch_atomic64_dec_return(atomic64_t *v) { @@ -2755,6 +2941,13 @@ arch_atomic64_fetch_dec_release(atomic64_t *v) #endif #ifndef arch_atomic64_fetch_dec +/** + * arch_atomic64_fetch_dec - Atomic dec with full ordering + * @v: pointer of type atomic64_t + * + * Atomically decrement @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_dec(atomic64_t *v) { @@ -2813,6 +3006,14 @@ arch_atomic64_fetch_and_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_and +/** + * arch_atomic64_fetch_and - Atomic and with full ordering + * @i: value to AND + * @v: pointer of type atomic64_t + * + * Atomically AND @i with @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_and(s64 i, atomic64_t *v) { @@ -2959,6 +3160,14 @@ arch_atomic64_fetch_andnot_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_andnot +/** + * arch_atomic64_fetch_andnot - Atomic andnot with full ordering + * @i: value to complement then AND + * @v: pointer of type atomic64_t + * + * Atomically complement then AND @i with @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_andnot(s64 i, atomic64_t *v) { @@ -3017,6 +3226,14 @@ arch_atomic64_fetch_or_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_or +/** + * arch_atomic64_fetch_or - Atomic or with full ordering + * @i: value to OR + * @v: pointer of type atomic64_t + * + * Atomically OR @i with @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_or(s64 i, atomic64_t *v) { @@ -3075,6 +3292,14 @@ arch_atomic64_fetch_xor_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_fetch_xor +/** + * arch_atomic64_fetch_xor - Atomic xor with full ordering + * @i: value to XOR + * @v: pointer of type atomic64_t + * + * Atomically XOR @i with @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_fetch_xor(s64 i, atomic64_t *v) { @@ -3133,6 +3358,14 @@ arch_atomic64_xchg_release(atomic64_t *v, s64 i) #endif #ifndef arch_atomic64_xchg +/** + * arch_atomic64_xchg - Atomic xchg with full ordering + * @v: pointer of type atomic64_t + * @i: value to exchange + * + * Atomically exchange @i with @v using full ordering. + * Return old value. + */ static __always_inline s64 arch_atomic64_xchg(atomic64_t *v, s64 i) { @@ -3199,6 +3432,18 @@ arch_atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new) #endif #ifndef arch_atomic64_cmpxchg +/** + * arch_atomic64_cmpxchg - Atomic cmpxchg with full ordering + * @v: pointer of type atomic64_t + * @old: desired old value to match + * @new: new value to put in + * + * Atomically compares @new to *@v, and if equal, + * stores @new to *@v, providing full ordering. + * Returns the old value *@v regardless of the result of + * the comparison. Therefore, if the return value is not + * equal to @old, the cmpxchg operation failed. + */ static __always_inline s64 arch_atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) { @@ -3360,6 +3605,18 @@ arch_atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new) #endif #ifndef arch_atomic64_try_cmpxchg +/** + * arch_atomic64_try_cmpxchg - Atomic try_cmpxchg with full ordering + * @v: pointer of type atomic64_t + * @old: desired old value to match + * @new: new value to put in + * + * Atomically compares @new to *@v, and if equal, + * stores @new to *@v, providing full ordering. + * Returns @true if the cmpxchg operation succeeded, + * and false otherwise. Either way, stores the old + * value of *@v to *@old. + */ static __always_inline bool arch_atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new) { @@ -3543,6 +3800,15 @@ arch_atomic64_add_negative_release(s64 i, atomic64_t *v) #endif #ifndef arch_atomic64_add_negative +/** + * arch_atomic64_add_negative - Atomic add_negative with full ordering + * @i: value to add + * @v: pointer of type atomic64_t + * + * Atomically add @i with @v using full ordering. + * Return @true if the result is negative, or @false when + * the result is greater than or equal to zero. + */ static __always_inline bool arch_atomic64_add_negative(s64 i, atomic64_t *v) { @@ -3692,4 +3958,4 @@ arch_atomic64_dec_if_positive(atomic64_t *v) #endif #endif /* _LINUX_ATOMIC_FALLBACK_H */ -// 2caf9e8360f71f3841789431533b32b620a12c1e +// 7c2c97cd48cf9c672efc44b9fed5a37b8970dde4 diff --git a/scripts/atomic/fallbacks/fence b/scripts/atomic/fallbacks/fence index 07757d8e338e..975855dfba25 100755 --- a/scripts/atomic/fallbacks/fence +++ b/scripts/atomic/fallbacks/fence @@ -1,3 +1,5 @@ +acqrel=full +. ${ATOMICDIR}/acqrel.sh cat <