From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH v2 11/20] include: asm-generic/atomic.h: define atomic_cmpxchg
Date: Wed, 22 Nov 2023 18:29:42 +0100 [thread overview]
Message-ID: <20231122172951.376531-12-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20231122172951.376531-1-a.fatoum@pengutronix.de>
We already define a generic cmpxchg implementation, so add one that
operates on atomic_t as well.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
v1 -> v2:
- unchanged
---
include/asm-generic/atomic.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index 27b0f73b487b..74429e1c373f 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -116,6 +116,8 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
*addr &= ~mask;
}
+#define atomic_cmpxchg(v, o, n) cmpxchg(&((v)->counter), o, n)
+
/* Atomic operations are already serializing on ARM */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
--
2.39.2
next prev parent reply other threads:[~2023-11-22 17:42 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-22 17:29 [PATCH v2 00/20] prepare for porting OP-TEE communication support Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 01/20] include: provide linux/errno.h Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 02/20] include: add linux/refcount.h Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 03/20] bitops: split off linux/bits.h Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 04/20] include: import <linux/instruction_pointer.h> Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 05/20] asm-generic: split off typeconfused readl and friends Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 06/20] asm-generic: migrate relaxed helpers into asm-generic/io.h Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 07/20] include: add linux/io.h with strict prototypes Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 08/20] include: import Linux word-at-a-time.h Ahmad Fatoum
2023-11-23 8:16 ` [PATCH] fixup! " Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 09/20] string: implement strscpy Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 10/20] of: add CONFIG_OF for Linux compatibility Ahmad Fatoum
2023-11-22 17:29 ` Ahmad Fatoum [this message]
2023-11-22 17:29 ` [PATCH v2 12/20] kbuild: build barebox for -std=gnu11 Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 13/20] include: linux/idr.h: implement more Linux API Ahmad Fatoum
2023-11-30 20:37 ` Sascha Hauer
2023-11-22 17:29 ` [PATCH v2 14/20] test: self: add simple IDR test Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 15/20] include: implement dev_warn_once and friends Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 16/20] include: add blocking notifier aliases Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 17/20] include: add Linux ktime API Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 18/20] of: constify string pointed to by struct of_device_id::compatible Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 19/20] of: define of_devices_ensure_probed_by_compatible Ahmad Fatoum
2023-11-22 17:29 ` [PATCH v2 20/20] include: add linux/device.h wrapper around driver.h Ahmad Fatoum
2023-11-23 14:50 ` [PATCH v2 00/20] prepare for porting OP-TEE communication support Sascha Hauer
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