Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
801 B
C
38 lines
801 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TOOLS_LINUX_ATOMIC_H
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#define __TOOLS_LINUX_ATOMIC_H
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#include <asm/atomic.h>
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void atomic_long_set(atomic_long_t *v, long i);
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/* atomic_cmpxchg_relaxed */
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#ifndef atomic_cmpxchg_relaxed
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#define atomic_cmpxchg_relaxed atomic_cmpxchg
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#define atomic_cmpxchg_release atomic_cmpxchg
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#endif /* atomic_cmpxchg_relaxed */
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static inline bool atomic_try_cmpxchg(atomic_t *ptr, int *oldp, int new)
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{
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int ret, old = *oldp;
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ret = atomic_cmpxchg(ptr, old, new);
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if (ret != old)
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*oldp = ret;
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return ret == old;
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}
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static inline bool atomic_inc_unless_negative(atomic_t *v)
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{
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int c = atomic_read(v);
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do {
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if (unlikely(c < 0))
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return false;
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} while (!atomic_try_cmpxchg(v, &c, c + 1));
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return true;
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}
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#endif /* __TOOLS_LINUX_ATOMIC_H */
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