tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2024.04.18a
head: 274af360588db0dafe36ffb5c61799fa77757ce7
commit: 274af360588db0dafe36ffb5c61799fa77757ce7 [34/34] fixup! xtensa: Emulate one-byte cmpxchg
config: arc-randconfig-001-20240502 (https://download.01.org/0day-ci/archive/20240502/[email protected]/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240502/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All warnings (new ones prefixed by >>):
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from kernel/acct.c:47:
kernel/acct.c: In function 'acct_pin_kill':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct fs_pin *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
kernel/acct.c:196:9: note: in expansion of macro 'cmpxchg'
196 | cmpxchg(&acct->ns->bacct, pin, NULL);
| ^~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/linux/page_counter.h:5,
from mm/memcontrol.c:28:
mm/memcontrol.c: In function 'mem_cgroup_iter':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct mem_cgroup *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
mm/memcontrol.c:1200:31: note: in expansion of macro 'cmpxchg'
1200 | (void)cmpxchg(&iter->position, pos, NULL);
| ^~~~~~~
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct mem_cgroup *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
mm/memcontrol.c:1240:23: note: in expansion of macro 'cmpxchg'
1240 | (void)cmpxchg(&iter->position, pos, memcg);
| ^~~~~~~
mm/memcontrol.c: In function '__invalidate_reclaim_iterators':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct mem_cgroup *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
mm/memcontrol.c:1281:17: note: in expansion of macro 'cmpxchg'
1281 | cmpxchg(&iter->position, dead_memcg, NULL);
| ^~~~~~~
mm/memcontrol.c: In function 'current_objcg_update':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct obj_cgroup *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:192:16: note: in expansion of macro 'raw_cmpxchg'
192 | ___r = raw_cmpxchg((_ptr), ___o, (_new)); \
| ^~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4880:9: note: in expansion of macro 'raw_try_cmpxchg'
4880 | raw_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
| ^~~~~~~~~~~~~~~
mm/memcontrol.c:3184:19: note: in expansion of macro 'try_cmpxchg'
3184 | } while (!try_cmpxchg(¤t->objcg, &old, objcg));
| ^~~~~~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from mm/page_io.c:14:
mm/page_io.c: In function 'sio_pool_init':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'mempool_t *' {aka 'struct mempool_s *'} makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
mm/page_io.c:256:21: note: in expansion of macro 'cmpxchg'
256 | if (cmpxchg(&sio_pool, NULL, pool))
| ^~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/kernel.h:23,
from fs/posix_acl.c:14:
fs/posix_acl.c: In function '__get_acl':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct posix_acl *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
fs/posix_acl.c:146:9: note: in expansion of macro 'cmpxchg'
146 | cmpxchg(p, ACL_NOT_CACHED, sentinel);
| ^~~~~~~
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct posix_acl *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
fs/posix_acl.c:169:17: note: in expansion of macro 'cmpxchg'
169 | cmpxchg(p, sentinel, ACL_NOT_CACHED);
| ^~~~~~~
In file included from include/linux/array_size.h:5,
from include/linux/kernel.h:16:
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct posix_acl *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/compiler.h:77:45: note: in definition of macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-arch-fallback.h:192:16: note: in expansion of macro 'raw_cmpxchg'
192 | ___r = raw_cmpxchg((_ptr), ___o, (_new)); \
| ^~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4880:9: note: in expansion of macro 'raw_try_cmpxchg'
4880 | raw_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
| ^~~~~~~~~~~~~~~
fs/posix_acl.c:177:23: note: in expansion of macro 'try_cmpxchg'
177 | if (unlikely(!try_cmpxchg(p, &sentinel, acl)))
| ^~~~~~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/slab.h:16,
from drivers/accessibility/speakup/selection.c:2:
drivers/accessibility/speakup/selection.c: In function 'speakup_set_selection':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct tty_struct *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
drivers/accessibility/speakup/selection.c:71:13: note: in expansion of macro 'cmpxchg'
71 | if (cmpxchg(&speakup_sel_work.tty, NULL, tty)) {
| ^~~~~~~
drivers/accessibility/speakup/selection.c: In function 'speakup_paste_selection':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct tty_struct *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
drivers/accessibility/speakup/selection.c:124:13: note: in expansion of macro 'cmpxchg'
124 | if (cmpxchg(&speakup_paste_work.tty, NULL, tty)) {
| ^~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/wait.h:9,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from include/linux/highmem.h:5,
from include/linux/bvec.h:10,
from include/linux/blk_types.h:10,
from include/linux/blkdev.h:9,
from drivers/nvme/target/fabrics-cmd.c:7:
drivers/nvme/target/fabrics-cmd.c: In function 'nvmet_install_queue':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct nvmet_ctrl *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
drivers/nvme/target/fabrics-cmd.c:169:15: note: in expansion of macro 'cmpxchg'
169 | old = cmpxchg(&req->sq->ctrl, NULL, ctrl);
| ^~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/wait.h:9,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from fs/notify/mark.c:63:
fs/notify/mark.c: In function 'fsnotify_attach_connector_to_object':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct fsnotify_mark_connector *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
fs/notify/mark.c:559:13: note: in expansion of macro 'cmpxchg'
559 | if (cmpxchg(connp, NULL, conn)) {
| ^~~~~~~
--
In file included from arch/arc/include/asm/atomic.h:13,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/arc/include/asm/bitops.h:188,
from include/linux/bitops.h:68,
from include/linux/thread_info.h:27,
from include/asm-generic/preempt.h:5,
from ./arch/arc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/wait.h:9,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from include/linux/highmem.h:5,
from include/linux/bvec.h:10,
from include/linux/blk_types.h:10,
from include/linux/blkdev.h:9,
from drivers/usb/gadget/function/f_fs.c:17:
drivers/usb/gadget/function/f_fs.c: In function '__ffs_epfile_read_buffered':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct ffs_buffer *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
drivers/usb/gadget/function/f_fs.c:922:13: note: in expansion of macro 'cmpxchg'
922 | if (cmpxchg(&epfile->read_buffer, NULL, buf))
| ^~~~~~~
drivers/usb/gadget/function/f_fs.c: In function '__ffs_epfile_read_data':
>> arch/arc/include/asm/cmpxchg.h:74:25: warning: assignment to 'long unsigned int' from 'struct ffs_buffer *' makes integer from pointer without a cast [-Wint-conversion]
74 | __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
| ^
include/linux/atomic/atomic-arch-fallback.h:55:21: note: in expansion of macro 'arch_cmpxchg'
55 | #define raw_cmpxchg arch_cmpxchg
| ^~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:4788:9: note: in expansion of macro 'raw_cmpxchg'
4788 | raw_cmpxchg(__ai_ptr, __VA_ARGS__); \
| ^~~~~~~~~~~
drivers/usb/gadget/function/f_fs.c:960:13: note: in expansion of macro 'cmpxchg'
960 | if (cmpxchg(&epfile->read_buffer, NULL, buf))
| ^~~~~~~
.
vim +74 arch/arc/include/asm/cmpxchg.h
63
64 #define arch_cmpxchg(ptr, old, new) \
65 ({ \
66 volatile __typeof__(ptr) _p_ = (ptr); \
67 __typeof__(*(ptr)) _o_ = (old); \
68 __typeof__(*(ptr)) _n_ = (new); \
69 __typeof__(*(ptr)) _prev_; \
70 unsigned long __flags; \
71 \
72 switch(sizeof((_p_))) { \
73 case 1: \
> 74 __flags = (__typeof__(*(ptr)))cmpxchg_emu_u8((volatile u8 *)_p_, (uintptr_t)_o_, (uintptr_t)_n_); \
75 _prev_ = (__typeof__(*(ptr)))__flags; \
76 break; \
77 break; \
78 case 4: \
79 /* \
80 * spin lock/unlock provide the needed smp_mb() \
81 * before/after \
82 */ \
83 atomic_ops_lock(__flags); \
84 _prev_ = *_p_; \
85 if (_prev_ == _o_) \
86 *_p_ = _n_; \
87 atomic_ops_unlock(__flags); \
88 break; \
89 default: \
90 BUILD_BUG(); \
91 } \
92 \
93 _prev_; \
94 })
95
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