From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7033943036; Fri, 11 Aug 2023 19:32:33 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E54DF43261; Fri, 11 Aug 2023 19:32:22 +0200 (CEST) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id C676240F17; Fri, 11 Aug 2023 19:32:19 +0200 (CEST) Received: by linux.microsoft.com (Postfix, from userid 1086) id 1D3AF20FCF7F; Fri, 11 Aug 2023 10:32:19 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1D3AF20FCF7F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1691775139; bh=wZsvw5yF2iOgCSbKdxrjGE+mybBwUZMbxBA3Q52/OIM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qkcGLoOrm54DlY+QNwhYpDRMLaxJm4+9I1ErNdTWWSt0oTCDy3BkM+DxYwRD01FiL voEJQhhH7m1dxoekZ4bVpzOqoc/kXCufTEyS6/wLDrkBG/QBADNtJTVVJk2Xf/xzNx xtoK2mpoTVkmEPZx9jDyKIlow33U3vMunTWajtJU= From: Tyler Retzlaff To: dev@dpdk.org Cc: techboard@dpdk.org, Bruce Richardson , Honnappa Nagarahalli , Ruifeng Wang , Jerin Jacob , Sunil Kumar Kori , =?UTF-8?q?Mattias=20R=C3=B6nnblom?= , Joyce Kong , David Christensen , Konstantin Ananyev , David Hunt , Thomas Monjalon , David Marchand , Tyler Retzlaff Subject: [PATCH v2 3/6] eal: add rte atomic qualifier with casts Date: Fri, 11 Aug 2023 10:32:13 -0700 Message-Id: <1691775136-6460-4-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1691775136-6460-1-git-send-email-roretzla@linux.microsoft.com> References: <1691717521-1025-1-git-send-email-roretzla@linux.microsoft.com> <1691775136-6460-1-git-send-email-roretzla@linux.microsoft.com> 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 Introduce __rte_atomic qualifying casts in rte_optional atomics inline functions to prevent cascading the need to pass __rte_atomic qualified arguments. Warning, this is really implementation dependent and being done temporarily to avoid having to convert more of the libraries and tests in DPDK in the initial series that introduces the API. The consequence of the assumption of the ABI of the types in question not being ``the same'' is only a risk that may be realized when enable_stdatomic=true. Signed-off-by: Tyler Retzlaff --- lib/eal/include/generic/rte_atomic.h | 48 ++++++++++++++++++++++++------------ lib/eal/include/generic/rte_pause.h | 9 ++++--- lib/eal/x86/rte_power_intrinsics.c | 7 +++--- 3 files changed, 42 insertions(+), 22 deletions(-) diff --git a/lib/eal/include/generic/rte_atomic.h b/lib/eal/include/generic/rte_atomic.h index f6c4b3e..4f954e0 100644 --- a/lib/eal/include/generic/rte_atomic.h +++ b/lib/eal/include/generic/rte_atomic.h @@ -274,7 +274,8 @@ static inline void rte_atomic16_add(rte_atomic16_t *v, int16_t inc) { - rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst); + rte_atomic_fetch_add_explicit((volatile int16_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst); } /** @@ -288,7 +289,8 @@ static inline void rte_atomic16_sub(rte_atomic16_t *v, int16_t dec) { - rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst); + rte_atomic_fetch_sub_explicit((volatile int16_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst); } /** @@ -341,7 +343,8 @@ static inline int16_t rte_atomic16_add_return(rte_atomic16_t *v, int16_t inc) { - return rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst) + inc; + return rte_atomic_fetch_add_explicit((volatile int16_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst) + inc; } /** @@ -361,7 +364,8 @@ static inline int16_t rte_atomic16_sub_return(rte_atomic16_t *v, int16_t dec) { - return rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst) - dec; + return rte_atomic_fetch_sub_explicit((volatile int16_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst) - dec; } /** @@ -380,7 +384,8 @@ #ifdef RTE_FORCE_INTRINSICS static inline int rte_atomic16_inc_and_test(rte_atomic16_t *v) { - return rte_atomic_fetch_add_explicit(&v->cnt, 1, rte_memory_order_seq_cst) + 1 == 0; + return rte_atomic_fetch_add_explicit((volatile int16_t __rte_atomic *)&v->cnt, 1, + rte_memory_order_seq_cst) + 1 == 0; } #endif @@ -400,7 +405,8 @@ static inline int rte_atomic16_inc_and_test(rte_atomic16_t *v) #ifdef RTE_FORCE_INTRINSICS static inline int rte_atomic16_dec_and_test(rte_atomic16_t *v) { - return rte_atomic_fetch_sub_explicit(&v->cnt, 1, rte_memory_order_seq_cst) - 1 == 0; + return rte_atomic_fetch_sub_explicit((volatile int16_t __rte_atomic *)&v->cnt, 1, + rte_memory_order_seq_cst) - 1 == 0; } #endif @@ -553,7 +559,8 @@ static inline void rte_atomic16_clear(rte_atomic16_t *v) static inline void rte_atomic32_add(rte_atomic32_t *v, int32_t inc) { - rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst); + rte_atomic_fetch_add_explicit((volatile int32_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst); } /** @@ -567,7 +574,8 @@ static inline void rte_atomic16_clear(rte_atomic16_t *v) static inline void rte_atomic32_sub(rte_atomic32_t *v, int32_t dec) { - rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst); + rte_atomic_fetch_sub_explicit((volatile int32_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst); } /** @@ -620,7 +628,8 @@ static inline void rte_atomic16_clear(rte_atomic16_t *v) static inline int32_t rte_atomic32_add_return(rte_atomic32_t *v, int32_t inc) { - return rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst) + inc; + return rte_atomic_fetch_add_explicit((volatile int32_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst) + inc; } /** @@ -640,7 +649,8 @@ static inline void rte_atomic16_clear(rte_atomic16_t *v) static inline int32_t rte_atomic32_sub_return(rte_atomic32_t *v, int32_t dec) { - return rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst) - dec; + return rte_atomic_fetch_sub_explicit((volatile int32_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst) - dec; } /** @@ -659,7 +669,8 @@ static inline void rte_atomic16_clear(rte_atomic16_t *v) #ifdef RTE_FORCE_INTRINSICS static inline int rte_atomic32_inc_and_test(rte_atomic32_t *v) { - return rte_atomic_fetch_add_explicit(&v->cnt, 1, rte_memory_order_seq_cst) + 1 == 0; + return rte_atomic_fetch_add_explicit((volatile int32_t __rte_atomic *)&v->cnt, 1, + rte_memory_order_seq_cst) + 1 == 0; } #endif @@ -679,7 +690,8 @@ static inline int rte_atomic32_inc_and_test(rte_atomic32_t *v) #ifdef RTE_FORCE_INTRINSICS static inline int rte_atomic32_dec_and_test(rte_atomic32_t *v) { - return rte_atomic_fetch_sub_explicit(&v->cnt, 1, rte_memory_order_seq_cst) - 1 == 0; + return rte_atomic_fetch_sub_explicit((volatile int32_t __rte_atomic *)&v->cnt, 1, + rte_memory_order_seq_cst) - 1 == 0; } #endif @@ -885,7 +897,8 @@ static inline void rte_atomic32_clear(rte_atomic32_t *v) static inline void rte_atomic64_add(rte_atomic64_t *v, int64_t inc) { - rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst); + rte_atomic_fetch_add_explicit((volatile int64_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst); } #endif @@ -904,7 +917,8 @@ static inline void rte_atomic32_clear(rte_atomic32_t *v) static inline void rte_atomic64_sub(rte_atomic64_t *v, int64_t dec) { - rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst); + rte_atomic_fetch_sub_explicit((volatile int64_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst); } #endif @@ -962,7 +976,8 @@ static inline void rte_atomic32_clear(rte_atomic32_t *v) static inline int64_t rte_atomic64_add_return(rte_atomic64_t *v, int64_t inc) { - return rte_atomic_fetch_add_explicit(&v->cnt, inc, rte_memory_order_seq_cst) + inc; + return rte_atomic_fetch_add_explicit((volatile int64_t __rte_atomic *)&v->cnt, inc, + rte_memory_order_seq_cst) + inc; } #endif @@ -986,7 +1001,8 @@ static inline void rte_atomic32_clear(rte_atomic32_t *v) static inline int64_t rte_atomic64_sub_return(rte_atomic64_t *v, int64_t dec) { - return rte_atomic_fetch_sub_explicit(&v->cnt, dec, rte_memory_order_seq_cst) - dec; + return rte_atomic_fetch_sub_explicit((volatile int64_t __rte_atomic *)&v->cnt, dec, + rte_memory_order_seq_cst) - dec; } #endif diff --git a/lib/eal/include/generic/rte_pause.h b/lib/eal/include/generic/rte_pause.h index c816e7d..c261689 100644 --- a/lib/eal/include/generic/rte_pause.h +++ b/lib/eal/include/generic/rte_pause.h @@ -87,7 +87,8 @@ { assert(memorder == rte_memory_order_acquire || memorder == rte_memory_order_relaxed); - while (rte_atomic_load_explicit(addr, memorder) != expected) + while (rte_atomic_load_explicit((volatile uint16_t __rte_atomic *)addr, memorder) + != expected) rte_pause(); } @@ -97,7 +98,8 @@ { assert(memorder == rte_memory_order_acquire || memorder == rte_memory_order_relaxed); - while (rte_atomic_load_explicit(addr, memorder) != expected) + while (rte_atomic_load_explicit((volatile uint32_t __rte_atomic *)addr, memorder) + != expected) rte_pause(); } @@ -107,7 +109,8 @@ { assert(memorder == rte_memory_order_acquire || memorder == rte_memory_order_relaxed); - while (rte_atomic_load_explicit(addr, memorder) != expected) + while (rte_atomic_load_explicit((volatile uint64_t __rte_atomic *)addr, memorder) + != expected) rte_pause(); } diff --git a/lib/eal/x86/rte_power_intrinsics.c b/lib/eal/x86/rte_power_intrinsics.c index cf70e33..6c192f0 100644 --- a/lib/eal/x86/rte_power_intrinsics.c +++ b/lib/eal/x86/rte_power_intrinsics.c @@ -23,9 +23,10 @@ uint64_t val; /* trigger a write but don't change the value */ - val = rte_atomic_load_explicit((volatile uint64_t *)addr, rte_memory_order_relaxed); - rte_atomic_compare_exchange_strong_explicit((volatile uint64_t *)addr, &val, val, - rte_memory_order_relaxed, rte_memory_order_relaxed); + val = rte_atomic_load_explicit((volatile uint64_t __rte_atomic *)addr, + rte_memory_order_relaxed); + rte_atomic_compare_exchange_strong_explicit((volatile uint64_t __rte_atomic *)addr, + &val, val, rte_memory_order_relaxed, rte_memory_order_relaxed); } static bool wait_supported; -- 1.8.3.1