mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-01 15:14:52 +00:00
9a6a6a3191
Commit857d18f23a("cleanup: Introduce ACQUIRE() and ACQUIRE_ERR() for conditional locks") accidentally broke the radix tree, VMA userland tests by including linux/args.h which is not present in the tools/include directory. This patch copies this over and adds an #ifdef block to avoid duplicate __CONCAT declaration in conflict with system headers when we ultimately include this. Link: https://lkml.kernel.org/r/20250811052654.33286-1-lorenzo.stoakes@oracle.com Fixes:857d18f23a("cleanup: Introduce ACQUIRE() and ACQUIRE_ERR() for conditional locks") Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Jann Horn <jannh@google.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
29 lines
1021 B
C
29 lines
1021 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef _LINUX_ARGS_H
|
|
#define _LINUX_ARGS_H
|
|
|
|
/*
|
|
* How do these macros work?
|
|
*
|
|
* In __COUNT_ARGS() _0 to _12 are just placeholders from the start
|
|
* in order to make sure _n is positioned over the correct number
|
|
* from 12 to 0 (depending on X, which is a variadic argument list).
|
|
* They serve no purpose other than occupying a position. Since each
|
|
* macro parameter must have a distinct identifier, those identifiers
|
|
* are as good as any.
|
|
*
|
|
* In COUNT_ARGS() we use actual integers, so __COUNT_ARGS() returns
|
|
* that as _n.
|
|
*/
|
|
|
|
/* This counts to 15. Any more, it will return 16th argument. */
|
|
#define __COUNT_ARGS(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _n, X...) _n
|
|
#define COUNT_ARGS(X...) __COUNT_ARGS(, ##X, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
|
|
|
|
/* Concatenate two parameters, but allow them to be expanded beforehand. */
|
|
#define __CONCAT(a, b) a ## b
|
|
#define CONCATENATE(a, b) __CONCAT(a, b)
|
|
|
|
#endif /* _LINUX_ARGS_H */
|