threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
28 lines
1.0 KiB
C
28 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SYNC_BITOPS_H__
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#define __ASM_SYNC_BITOPS_H__
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#include <asm/bitops.h>
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/* sync_bitops functions are equivalent to the SMP implementation of the
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* original functions, independently from CONFIG_SMP being defined.
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*
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* We need them because _set_bit etc are not SMP safe if !CONFIG_SMP. But
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* under Xen you might be communicating with a completely external entity
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* who might be on another CPU (e.g. two uniprocessor guests communicating
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* via event channels and grant tables). So we need a variant of the bit
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* ops which are SMP safe even on a UP kernel.
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*/
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#define sync_set_bit(nr, p) _set_bit(nr, p)
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#define sync_clear_bit(nr, p) _clear_bit(nr, p)
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#define sync_change_bit(nr, p) _change_bit(nr, p)
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#define sync_test_and_set_bit(nr, p) _test_and_set_bit(nr, p)
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#define sync_test_and_clear_bit(nr, p) _test_and_clear_bit(nr, p)
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#define sync_test_and_change_bit(nr, p) _test_and_change_bit(nr, p)
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#define sync_test_bit(nr, addr) test_bit(nr, addr)
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#define sync_cmpxchg cmpxchg
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#endif
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