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/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}" "${int}" "$@"
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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
8 #gen_proto_order_variant(meta, pfx, name, sfx, order, atomic, int, arg...)
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.
48 #include <linux/atomic.h>
53 gen_proto "${meta}" "${name}" "atomic" "int" ${args}
/linux/net/rds/
H A Drdma.c908 || rm->atomic.op_active) in rds_cmsg_atomic()
916 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
917 rm->atomic.op_m_fadd.add = args->fadd.add; in rds_cmsg_atomic()
918 rm->atomic.op_m_fadd.nocarry_mask = 0; in rds_cmsg_atomic()
921 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
922 rm->atomic.op_m_fadd.add = args->m_fadd.add; in rds_cmsg_atomic()
923 rm->atomic.op_m_fadd.nocarry_mask = args->m_fadd.nocarry_mask; in rds_cmsg_atomic()
926 rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; in rds_cmsg_atomic()
927 rm->atomic.op_m_cswp.compare = args->cswp.compare; in rds_cmsg_atomic()
928 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
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/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
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/linux/sound/core/seq/
H A Dseq_queue.c230 void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) in snd_seq_check_queue() argument
256 snd_seq_dispatch_event(cell, atomic, hop); in snd_seq_check_queue()
267 snd_seq_dispatch_event(cell, atomic, hop); in snd_seq_check_queue()
286 int snd_seq_enqueue_event(struct snd_seq_event_cell *cell, int atomic, int hop) in snd_seq_enqueue_event() argument
329 snd_seq_check_queue(q, atomic, hop); in snd_seq_enqueue_event()
570 int atomic, int hop) in queue_broadcast_event() argument
585 snd_seq_kernel_client_dispatch(SNDRV_SEQ_CLIENT_SYSTEM, &sev, atomic, hop); in queue_broadcast_event()
594 int atomic, int hop) in snd_seq_queue_process_event() argument
601 queue_broadcast_event(q, ev, atomic, hop); in snd_seq_queue_process_event()
606 queue_broadcast_event(q, ev, atomic, hop); in snd_seq_queue_process_event()
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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()
H A Dseq_ump_convert.c365 int atomic, int hop) in cvt_ump_midi1_to_midi2() argument
428 atomic, hop); in cvt_ump_midi1_to_midi2()
435 int atomic, int hop) in cvt_ump_midi2_to_midi1() argument
472 atomic, hop); in cvt_ump_midi2_to_midi1()
479 atomic, hop); in cvt_ump_midi2_to_midi1()
500 atomic, hop); in cvt_ump_midi2_to_midi1()
508 int atomic, int hop) in cvt_ump_to_any() argument
542 &ev_cvt[i], atomic, hop); in cvt_ump_to_any()
554 int atomic, int hop) in deliver_with_group_convert() argument
565 atomic, ho in deliver_with_group_convert()
586 snd_seq_deliver_from_ump(struct snd_seq_client * source,struct snd_seq_client * dest,struct snd_seq_client_port * dest_port,struct snd_seq_event * event,int atomic,int hop) snd_seq_deliver_from_ump() argument
1135 cvt_to_ump_midi1(struct snd_seq_client * dest,struct snd_seq_client_port * dest_port,struct snd_seq_event * event,int atomic,int hop) cvt_to_ump_midi1() argument
1169 cvt_to_ump_midi2(struct snd_seq_client * dest,struct snd_seq_client_port * dest_port,struct snd_seq_event * event,int atomic,int hop) cvt_to_ump_midi2() argument
1217 cvt_sysex_to_ump(struct snd_seq_client * dest,struct snd_seq_client_port * dest_port,struct snd_seq_event * event,int atomic,int hop) cvt_sysex_to_ump() argument
1277 snd_seq_deliver_to_ump(struct snd_seq_client * source,struct snd_seq_client * dest,struct snd_seq_client_port * dest_port,struct snd_seq_event * event,int atomic,int hop) snd_seq_deliver_to_ump() argument
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H A Dseq_clientmgr.c70 int err, int atomic, int hop);
73 int atomic, int hop);
541 int err, int atomic, int hop) in bounce_error_event() argument
593 result = snd_seq_deliver_single_event(NULL, &bounce_ev, atomic, hop + 1); in bounce_error_event()
632 int atomic, int hop) in __snd_seq_deliver_single_event() argument
645 atomic, hop); in __snd_seq_deliver_single_event()
653 int atomic, int hop) in _snd_seq_deliver_single_event() argument
677 event, atomic, hop); in _snd_seq_deliver_single_event()
684 event, atomic, hop); in _snd_seq_deliver_single_event()
689 atomic, hop); in _snd_seq_deliver_single_event()
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/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)
/linux/drivers/gpu/drm/ci/xfails/
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/Documentation/core-api/
H A Dlocal_ops.rst11 This document explains the purpose of the local atomic operations, how
26 Purpose of local atomic operations
29 Local atomic operations are meant to provide fast and highly reentrant per CPU
30 counters. They minimize the performance cost of standard atomic operations by
34 Having fast per CPU atomic counters is interesting in many cases: it does not
39 Local atomic operations only guarantee variable modification atomicity wrt the
50 It can be done by slightly modifying the standard atomic operations: only
63 Rules to follow when using local atomic operations
82 "``long``", aligned, variables are always atomic. Since no memory
87 How to use local atomic operations
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/linux/drivers/firmware/arm_scmi/
H A Dclock.c183 u32 oem_val, bool atomic);
187 bool atomic);
794 bool atomic) in scmi_clock_config_set() argument
808 t->hdr.poll_completion = atomic; in scmi_clock_config_set()
885 bool atomic) in scmi_clock_config_set_v2() argument
901 t->hdr.poll_completion = atomic; in scmi_clock_config_set_v2()
921 bool atomic) in scmi_clock_enable() argument
934 NULL_OEM_TYPE, 0, atomic); in scmi_clock_enable()
938 bool atomic) in scmi_clock_disable() argument
951 NULL_OEM_TYPE, 0, atomic); in scmi_clock_disable()
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/linux/drivers/gpu/drm/xe/
H A Dxe_vm_madvise.c136 xe_assert(vm->xe, op->atomic.val <= DRM_XE_ATOMIC_CPU); in madvise_atomic()
140 !(op->atomic.val == DRM_XE_ATOMIC_DEVICE && in madvise_atomic()
146 if (vmas[i]->attr.atomic_access == op->atomic.val) { in madvise_atomic()
150 vmas[i]->attr.atomic_access = op->atomic.val; in madvise_atomic()
154 if (!bo || bo->attr.atomic_access == op->atomic.val) in madvise_atomic()
159 bo->attr.atomic_access = op->atomic.val; in madvise_atomic()
384 if (XE_IOCTL_DBG(xe, args->atomic.val > DRM_XE_ATOMIC_CPU)) in madvise_args_are_sane()
387 if (XE_IOCTL_DBG(xe, args->atomic.pad)) in madvise_args_are_sane()
390 if (XE_IOCTL_DBG(xe, args->atomic.reserved)) in madvise_args_are_sane()
676 args->atomic.val)) { in xe_vm_madvise_ioctl()
/linux/Documentation/litmus-tests/
H A DREADME12 atomic (/atomic directory)
16 Test that an atomic RMW followed by a smp_mb__after_atomic() is
20 Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
21 Test that atomic_set() cannot break the atomicity of atomic RMWs.
/linux/scripts/atomic/fallbacks/
H A Dset_release2 if (__native_word(${atomic}_t)) {
6 raw_${atomic}_set(v, i);
H A Dread_acquire4 if (__native_word(${atomic}_t)) {
7 ret = raw_${atomic}_read(v);
H A Dinc_unless_negative2 ${int} c = raw_${atomic}_read(v);
7 } while (!raw_${atomic}_try_cmpxchg(v, &c, c + 1));
H A Ddec_unless_positive2 ${int} c = raw_${atomic}_read(v);
7 } while (!raw_${atomic}_try_cmpxchg(v, &c, c - 1));
/linux/drivers/i2c/busses/
H A Di2c-imx-lpi2c.c219 #define lpi2c_imx_read_msr_poll_timeout(atomic, val, cond) \ argument
220 (atomic ? readl_poll_timeout_atomic(lpi2c_imx->base + LPI2C_MSR, val, \
231 static int lpi2c_imx_bus_busy(struct lpi2c_imx_struct *lpi2c_imx, bool atomic) in lpi2c_imx_bus_busy() argument
236 err = lpi2c_imx_read_msr_poll_timeout(atomic, temp, in lpi2c_imx_bus_busy()
281 struct i2c_msg *msgs, bool atomic) in lpi2c_imx_start() argument
293 return lpi2c_imx_bus_busy(lpi2c_imx, atomic); in lpi2c_imx_start()
296 static void lpi2c_imx_stop(struct lpi2c_imx_struct *lpi2c_imx, bool atomic) in lpi2c_imx_stop() argument
303 err = lpi2c_imx_read_msr_poll_timeout(atomic, temp, temp & MSR_SDF); in lpi2c_imx_stop()
421 static int lpi2c_imx_txfifo_empty(struct lpi2c_imx_struct *lpi2c_imx, bool atomic) in lpi2c_imx_txfifo_empty() argument
426 err = lpi2c_imx_read_msr_poll_timeout(atomic, temp, in lpi2c_imx_txfifo_empty()
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