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/linux/lib/
H A Ddec_and_lock.c21 int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock) in _atomic_dec_and_lock() argument
24 if (atomic_add_unless(atomic, -1, 1)) in _atomic_dec_and_lock()
29 if (atomic_dec_and_test(atomic)) in _atomic_dec_and_lock()
37 int _atomic_dec_and_lock_irqsave(atomic_t *atomic, spinlock_t *lock, in _atomic_dec_and_lock_irqsave() argument
41 if (atomic_add_unless(atomic, -1, 1)) in _atomic_dec_and_lock_irqsave()
46 if (atomic_dec_and_test(atomic)) in _atomic_dec_and_lock_irqsave()
53 int _atomic_dec_and_raw_lock(atomic_t *atomic, raw_spinlock_t *lock) in _atomic_dec_and_raw_lock() argument
56 if (atomic_add_unless(atomic, -1, 1)) in _atomic_dec_and_raw_lock()
61 if (atomic_dec_and_test(atomic)) in _atomic_dec_and_raw_lock()
68 int _atomic_dec_and_raw_lock_irqsave(atomic_t *atomic, raw_spinlock_t *lock, in _atomic_dec_and_raw_lock_irqsave() argument
[all …]
H A Datomic64_test.c22 atomic##bit##_set(&v, v0); \
24 atomic##bit##_##op(val, &v); \
26 WARN(atomic##bit##_read(&v) != r, "%Lx != %Lx\n", \
27 (unsigned long long)atomic##bit##_read(&v), \
46 atomic##bit##_set(&v, v0); \
49 BUG_ON(atomic##bit##_##op(val, &v) != r); \
50 BUG_ON(atomic##bit##_read(&v) != r); \
55 atomic##bit##_set(&v, v0); \
58 BUG_ON(atomic##bit##_##op(val, &v) != v0); \
59 BUG_ON(atomic##bit##_read(&v) != r); \
[all …]
/linux/scripts/atomic/
H A Dgen-atomics.sh11 gen-atomic-instrumented.sh linux/atomic/atomic-instrumented.h
12 gen-atomic-long.sh linux/atomic/atomic-long.h
13 gen-atomic-fallback.sh linux/atomic/atomic-arch-fallback.h
14 gen-rust-atomic-helpers.sh ../rust/helpers/atomic.c
H A Datomic-tbl.sh117 local atomic="$1"; shift
122 v) type="${atomic}_t *";;
123 cv) type="const ${atomic}_t *";;
134 local atomic="$1"; shift
136 local type="$(gen_param_type "${arg}" "${int}" "${atomic}")"
145 local atomic="$1"; shift
148 gen_param "$1" "${int}" "${atomic}"
195 local atomic="$1"; shift
198 local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
202 local params="$(gen_params "${int}" "${atomic}" "$@")"
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H A Dgen-atomic-fallback.sh6 . ${ATOMICDIR}/atomic-tbl.sh
17 local atomic="$1"; shift
22 local params="$(gen_params "${int}" "${atomic}" "$@")"
63 local atomic="$1"; shift
66 local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
67 local basename="${atomic}_${pfx}${name}${sfx}"
73 local params="$(gen_params "${int}" "${atomic}" "$@")"
76 gen_kerneldoc "raw_" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "${atomic}" "${int}" "$@"
101 gen_order_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "${atomic}" "${int}" "$@"
112 gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "${atomic}" "${int}" "$@"
[all …]
H A Dgen-atomic-long.sh6 . ${ATOMICDIR}/atomic-tbl.sh
13 local atomic="$1"; shift
17 printf "($(gen_param_type "${arg}" "${int}" "${atomic}"))"
24 local atomic="$1"; shift
27 local cast="$(gen_cast "$1" "${int}" "${atomic}")"
48 local argscast_32="$(gen_args_cast "int" "atomic" "$@")"
H A Dgen-rust-atomic-helpers.sh6 . ${ATOMICDIR}/atomic-tbl.sh
16 local atomic="$1"; shift
19 local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
22 local params="$(gen_params "${int}" "${atomic}" "$@")"
43 * This file provides helpers for the various atomic functions for Rust.
H A Dgen-atomic-instrumented.sh6 . ${ATOMICDIR}/atomic-tbl.sh
60 local atomic="$1"; shift
63 local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
66 local params="$(gen_params "${int}" "${atomic}" "$@")"
71 gen_kerneldoc "" "${meta}" "${pfx}" "${name}" "${sfx}" "${order}" "${atomic}" "${int}" "$@"
138 * This file provoides atomic operations with explicit instrumentation (e.g.
/linux/Documentation/filesystems/ext4/
H A Datomic_writes.rst12 system crashes. The ext4 filesystem supports atomic writes (only with Direct
14 supports hardware atomic writes. This is supported in the following two ways:
17 EXT4 supports atomic write operations with a single filesystem block since
18 v6.13. In this the atomic write unit minimum and maximum sizes are both set
20 e.g. doing atomic write of 16KB with 16KB filesystem blocksize on 64KB
24 EXT4 now also supports atomic writes spanning multiple filesystem blocks
25 using a feature known as bigalloc. The atomic write unit's minimum and
27 based on the underlying device’s supported atomic write unit limits.
32 Basic requirements for atomic writes in ext4:
35 2. The underlying block device must support atomic writes
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/linux/net/rds/
H A Drdma.c876 || rm->atomic.op_active) in rds_cmsg_atomic()
884 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
885 rm->atomic.op_m_fadd.add = args->fadd.add; in rds_cmsg_atomic()
886 rm->atomic.op_m_fadd.nocarry_mask = 0; in rds_cmsg_atomic()
889 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
890 rm->atomic.op_m_fadd.add = args->m_fadd.add; in rds_cmsg_atomic()
891 rm->atomic.op_m_fadd.nocarry_mask = args->m_fadd.nocarry_mask; in rds_cmsg_atomic()
894 rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; in rds_cmsg_atomic()
895 rm->atomic.op_m_cswp.compare = args->cswp.compare; in rds_cmsg_atomic()
896 rm->atomic.op_m_cswp.swap = args->cswp.swap; in rds_cmsg_atomic()
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/linux/Documentation/
H A Datomic_bitops.txt5 While our bitmap_{}() functions are non-atomic, we have a number of operations
6 operating on single bits in a bitmap that are atomic.
18 RMW atomic operations without return value:
23 RMW atomic operations with return value:
33 All RMW atomic operations have a '__' prefixed variant which is non-atomic.
39 Non-atomic ops:
67 Since a platform only has a single means of achieving atomic operations
H A Datomic_t.txt2 On atomic types (atomic_t atomic64_t and atomic_long_t).
4 The atomic type provides an interface to the architecture's means of atomic
5 RMW operations between CPUs (atomic operations on MMIO are not supported and
20 RMW atomic operations:
67 Therefore, an explicitly unsigned variant of the atomic ops is strictly
91 C Atomic-RMW-ops-are-atomic-WRT-atomic_set
118 The obvious case where this is not so is when we need to implement atomic ops
155 All these operations are SMP atomic; that is, the operations (for a single
156 atomic variable) can be fully ordered and no intermediate state is lost or
192 only apply to the RMW atomic ops and can be used to augment/upgrade the
[all …]
/linux/
H A DKbuild57 # Check the manual modification of atomic headers
72 atomic-checks += $(addprefix $(obj)/.checked-, \
73 atomic-arch-fallback.h \
74 atomic-instrumented.h \
75 atomic-long.h)
77 targets += $(atomic-checks)
78 $(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE
84 prepare: $(offsets-file) missing-syscalls $(atomic-checks)
/linux/sound/synth/emux/
H A Demux_oss.c27 void *private, int atomic, int hop);
30 int cmd, unsigned char *event, int atomic, int hop);
32 int cmd, unsigned char *event, int atomic, int hop);
34 int ch, int param, int val, int atomic, int hop);
290 int atomic, int hop) in snd_emux_event_oss_input() argument
303 return snd_emux_event_input(ev, direct, private_data, atomic, hop); in snd_emux_event_oss_input()
311 emuspec_control(emu, p, cmd, data, atomic, hop); in snd_emux_event_oss_input()
313 gusspec_control(emu, p, cmd, data, atomic, hop); in snd_emux_event_oss_input()
323 unsigned char *event, int atomic, int hop) in emuspec_control() argument
363 fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); in emuspec_control()
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/linux/drivers/firmware/arm_scmi/transports/
H A DKconfig52 bool "Enable atomic mode support for SCMI SMC transport"
55 Enable support of atomic operation for SCMI SMC based transport.
57 If you want the SCMI SMC based transport to operate in atomic
60 Enabling atomic mode operations allows any SCMI driver using this
61 transport to optionally ask for atomic SCMI transactions and operate
62 in atomic context too, at the price of using a number of busy-waiting
109 bool "Enable atomic mode for SCMI VirtIO transport"
112 Enable support of atomic operation for SCMI VirtIO based transport.
114 If you want the SCMI VirtIO based transport to operate in atomic
118 Enabling atomic mode operations allows any SCMI driver using this
[all …]
/linux/sound/core/seq/
H A Dseq_queue.c229 void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) in snd_seq_check_queue() argument
255 snd_seq_dispatch_event(cell, atomic, hop); in snd_seq_check_queue()
266 snd_seq_dispatch_event(cell, atomic, hop); in snd_seq_check_queue()
285 int snd_seq_enqueue_event(struct snd_seq_event_cell *cell, int atomic, int hop) in snd_seq_enqueue_event() argument
327 snd_seq_check_queue(q, atomic, hop); in snd_seq_enqueue_event()
568 int atomic, int hop) in queue_broadcast_event() argument
583 snd_seq_kernel_client_dispatch(SNDRV_SEQ_CLIENT_SYSTEM, &sev, atomic, hop); in queue_broadcast_event()
592 int atomic, int hop) in snd_seq_queue_process_event() argument
599 queue_broadcast_event(q, ev, atomic, hop); in snd_seq_queue_process_event()
604 queue_broadcast_event(q, ev, atomic, hop); in snd_seq_queue_process_event()
[all …]
H A Dseq_system.h13 void snd_seq_system_broadcast(int client, int port, int type, bool atomic);
21 bool atomic) in snd_seq_system_ump_notify() argument
26 snd_seq_system_broadcast(client, block, type, atomic); in snd_seq_system_ump_notify()
37 bool atomic);
H A Dseq_system.c81 void snd_seq_system_broadcast(int client, int port, int type, bool atomic) in snd_seq_system_broadcast() argument
88 snd_seq_kernel_client_dispatch(sysclient, &ev, atomic, 0); in snd_seq_system_broadcast()
94 bool atomic) in snd_seq_system_notify() argument
101 return snd_seq_kernel_client_dispatch(sysclient, ev, atomic, 0); in snd_seq_system_notify()
105 static int event_input_timer(struct snd_seq_event * ev, int direct, void *private_data, int atomic,… in event_input_timer() argument
107 return snd_seq_control_queue(ev, atomic, hop); in event_input_timer()
/linux/include/linux/
H A Dspinlock.h500 extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock);
501 #define atomic_dec_and_lock(atomic, lock) \ argument
502 __cond_lock(lock, _atomic_dec_and_lock(atomic, lock))
504 extern int _atomic_dec_and_lock_irqsave(atomic_t *atomic, spinlock_t *lock,
506 #define atomic_dec_and_lock_irqsave(atomic, lock, flags) \ argument
507 __cond_lock(lock, _atomic_dec_and_lock_irqsave(atomic, lock, &(flags)))
509 extern int _atomic_dec_and_raw_lock(atomic_t *atomic, raw_spinlock_t *lock);
510 #define atomic_dec_and_raw_lock(atomic, lock) \ argument
511 __cond_lock(lock, _atomic_dec_and_raw_lock(atomic, lock))
513 extern int _atomic_dec_and_raw_lock_irqsave(atomic_t *atomic, raw_spinlock_t *lock,
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/linux/Documentation/driver-api/
H A Dbasics.rst96 .. kernel-doc:: include/linux/atomic/atomic-instrumented.h
99 .. kernel-doc:: include/linux/atomic/atomic-arch-fallback.h
102 .. kernel-doc:: include/linux/atomic/atomic-long.h
/linux/drivers/gpu/drm/xe/
H A Dxe_pcode.c60 bool atomic) in __pcode_mailbox_rw() argument
76 timeout_ms * USEC_PER_MSEC, NULL, atomic); in __pcode_mailbox_rw()
91 bool atomic) in pcode_mailbox_rw() argument
98 return __pcode_mailbox_rw(tile, mbox, data0, data1, timeout_ms, return_data, atomic); in pcode_mailbox_rw()
136 u32 *status, bool atomic, int timeout_us, bool locked) in pcode_try_request() argument
145 atomic); in pcode_try_request()
148 atomic); in pcode_try_request()
152 if (atomic) in pcode_try_request()
H A Dxe_vm_madvise.c110 xe_assert(vm->xe, op->atomic.val <= DRM_XE_ATOMIC_CPU); in madvise_atomic()
114 !(op->atomic.val == DRM_XE_ATOMIC_DEVICE && in madvise_atomic()
120 if (vmas[i]->attr.atomic_access == op->atomic.val) { in madvise_atomic()
124 vmas[i]->attr.atomic_access = op->atomic.val; in madvise_atomic()
128 if (!bo || bo->attr.atomic_access == op->atomic.val) in madvise_atomic()
133 bo->attr.atomic_access = op->atomic.val; in madvise_atomic()
259 if (XE_IOCTL_DBG(xe, args->atomic.val > DRM_XE_ATOMIC_CPU)) in madvise_args_are_sane()
262 if (XE_IOCTL_DBG(xe, args->atomic.pad)) in madvise_args_are_sane()
265 if (XE_IOCTL_DBG(xe, args->atomic.reserved)) in madvise_args_are_sane()
386 args->atomic.val)) { in xe_vm_madvise_ioctl()
/linux/drivers/gpu/drm/ci/xfails/
H A Dvkms-none-fails.txt4 kms_cursor_legacy@basic-flip-before-cursor-atomic,Fail
6 kms_cursor_legacy@cursor-vs-flip-atomic,Fail
10 kms_cursor_legacy@flip-vs-cursor-atomic,Fail
11 kms_cursor_legacy@flip-vs-cursor-crc-atomic,Fail
H A Dmeson-g12b-fails.txt9 kms_properties@connector-properties-atomic,Fail
11 kms_properties@get_properties-sanity-atomic,Fail
12 kms_properties@get_properties-sanity-non-atomic,Fail
/linux/arch/mips/include/asm/
H A Datomic.h37 ATOMIC_OPS(atomic, int)
144 ATOMIC_OPS(atomic, add, int, +=, addu, ll, sc)
145 ATOMIC_OPS(atomic, sub, int, -=, subu, ll, sc)
166 ATOMIC_OPS(atomic, and, int, &=, and, ll, sc)
167 ATOMIC_OPS(atomic, or, int, |=, or, ll, sc)
168 ATOMIC_OPS(atomic, xor, int, ^=, xor, ll, sc)
248 ATOMIC_SIP_OP(atomic, int, subu, ll, sc)

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