From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 11/18] include: asm-generic/atomic.h: define atomic_cmpxchg
Date: Fri, 10 Nov 2023 22:44:14 +0100 [thread overview]
Message-ID: <20231110214421.2726093-12-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20231110214421.2726093-1-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>
---
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:[~2023-11-10 22:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-10 21:44 [PATCH 00/18] prepare for porting OP-TEE communication support Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 01/18] include: provide linux/errno.h Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 02/18] include: add linux/refcount.h Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 03/18] bitops: split off linux/bits.h Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 04/18] include: import <linux/instruction_pointer.h> Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 05/18] asm-generic: split off typeconfused readl and friends Ahmad Fatoum
2023-11-13 12:40 ` Sascha Hauer
2023-11-10 21:44 ` [PATCH 06/18] asm-generic: migrate relaxed helpers into asm-generic/io.h Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 07/18] include: add linux/io.h with strict prototypes Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 08/18] include: import Linux word-at-a-time.h Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 09/18] string: implement strscpy Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 10/18] of: add CONFIG_OF for Linux compatibility Ahmad Fatoum
2023-11-10 21:44 ` Ahmad Fatoum [this message]
2023-11-10 21:44 ` [PATCH 12/18] kbuild: build barebox for -std=gnu11 Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 13/18] include: linux/idr.h: implement more Linux API Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 14/18] include: implement dev_warn_once and friends Ahmad Fatoum
2023-11-13 12:38 ` Sascha Hauer
2023-11-10 21:44 ` [PATCH 15/18] include: add blocking notifier aliases Ahmad Fatoum
2023-11-13 12:39 ` Sascha Hauer
2023-11-10 21:44 ` [PATCH 16/18] include: add Linux ktime API Ahmad Fatoum
2023-11-10 21:44 ` [PATCH 17/18] of: define of_devices_ensure_probed_by_compatible Ahmad Fatoum
2023-11-13 12:47 ` Sascha Hauer
2023-11-10 21:44 ` [PATCH 18/18] include: add linux/device.h wrapper around driver.h Ahmad Fatoum
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