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/Linux-v6.1/include/uapi/linux/
Datmmpc.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
44 __u16 mpc_p1; /* Shortcut-Setup Frame Count */
45 __u16 mpc_p2; /* Shortcut-Setup Frame Time */
46 __u8 mpc_p3[8]; /* Flow-detection Protocols */
47 __u16 mpc_p4; /* MPC Initial Retry Time */
48 __u16 mpc_p5; /* MPC Retry Time Maximum */
49 __u16 mpc_p6; /* Hold Down Time */
85 #define MPC_P1 10 /* Shortcut-Setup Frame Count */
86 #define MPC_P2 1 /* Shortcut-Setup Frame Time */
87 #define MPC_P3 0 /* Flow-detection Protocols */
[all …]
/Linux-v6.1/drivers/rtc/
Drtc-sun4v.c1 // SPDX-License-Identifier: GPL-2.0
2 /* rtc-sun4v.c: Hypervisor based RTC for SUN4V systems.
21 unsigned long ret, time; in hypervisor_get_time() local
24 retry: in hypervisor_get_time()
25 ret = sun4v_tod_get(&time); in hypervisor_get_time()
27 return time; in hypervisor_get_time()
29 if (--retries > 0) { in hypervisor_get_time()
31 goto retry; in hypervisor_get_time()
51 retry: in hypervisor_set_time()
56 if (--retries > 0) { in hypervisor_set_time()
[all …]
Drtc-ntxec.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * e-book readers designed by the original design manufacturer Netronix, Inc.
8 * This driver implements access to the RTC time and date.
42 retry: in ntxec_read_time()
43 res = regmap_read(rtc->ec->regmap, NTXEC_REG_READ_MINUTE_SECOND, &value); in ntxec_read_time()
47 tm->tm_min = value >> 8; in ntxec_read_time()
48 tm->tm_sec = value & 0xff; in ntxec_read_time()
50 res = regmap_read(rtc->ec->regmap, NTXEC_REG_READ_MDAY_HOUR, &value); in ntxec_read_time()
54 tm->tm_mday = value >> 8; in ntxec_read_time()
55 tm->tm_hour = value & 0xff; in ntxec_read_time()
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/Linux-v6.1/Documentation/admin-guide/
Dxfs.rst1 .. SPDX-License-Identifier: GPL-2.0
8 on the SGI IRIX platform. It is completely multi-threaded, can
15 for further details. This implementation is on-disk compatible
25 Sets the buffered I/O end-of-file preallocation size when
28 through to 1GiB, inclusive, in power-of-2 increments.
30 The default behaviour is for dynamic end-of-file
40 on-disk. When the new form is used for the first time when
42 attributes) the on-disk superblock feature bit field will be
45 The default behaviour is determined by the on-disk feature
116 Set the number of in-memory log buffers. Valid numbers
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/Linux-v6.1/arch/x86/kernel/
Dtsc_sync.c1 // SPDX-License-Identifier: GPL-2.0
8 * print a warning if not and turn off the TSC clock-source.
10 * The warp-check is point-to-point between two CPUs, the CPU
14 * Only two CPUs may participate - they can enter in any order.
62 if (!resume && time_before(jiffies, adj->nextcheck)) in tsc_verify_tsc_adjust()
65 adj->nextcheck = jiffies + HZ; in tsc_verify_tsc_adjust()
68 if (adj->adjusted == curval) in tsc_verify_tsc_adjust()
72 wrmsrl(MSR_IA32_TSC_ADJUST, adj->adjusted); in tsc_verify_tsc_adjust()
74 if (!adj->warned || resume) { in tsc_verify_tsc_adjust()
75 pr_warn(FW_BUG "TSC ADJUST differs: CPU%u %lld --> %lld. Restoring\n", in tsc_verify_tsc_adjust()
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/Linux-v6.1/Documentation/locking/
Dseqlock.rst8 Sequence counters are a reader-writer consistency mechanism with
9 lockless readers (read-only retry loops), and no writer starvation. They
10 are used for data that's rarely written to (e.g. system time), where the
11 reader wants a consistent set of information and is willing to retry if
19 the reader must retry.
30 interrupted writer. If that reader belongs to a real-time scheduling
53 requirements of writer serialization and non-preemptibility, use
76 /* ... [[write-side critical section]] ... */
85 /* ... [[read-side critical section]] ... */
93 -----------------------------------------------------------------
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/Linux-v6.1/drivers/gpu/drm/amd/amdgpu/
Damdgpu_amdkfd_gfx_v7.c53 mutex_lock(&adev->srbm_mutex); in lock_srbm()
60 mutex_unlock(&adev->srbm_mutex); in unlock_srbm()
66 uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in acquire_queue()
67 uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in acquire_queue()
122 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in kgd_init_interrupts()
123 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in kgd_init_interrupts()
139 retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET + in get_sdma_rlc_reg_offset()
140 m->sdma_queue_id * KFD_CIK_SDMA_QUEUE_OFFSET; in get_sdma_rlc_reg_offset()
143 m->sdma_engine_id, m->sdma_queue_id, retval); in get_sdma_rlc_reg_offset()
173 mqd_hqd = &m->cp_mqd_base_addr_lo; in kgd_hqd_load()
[all …]
Damdgpu_amdkfd_gfx_v8.c47 mutex_lock(&adev->srbm_mutex); in lock_srbm()
54 mutex_unlock(&adev->srbm_mutex); in unlock_srbm()
60 uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in acquire_queue()
61 uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in acquire_queue()
117 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in kgd_init_interrupts()
118 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in kgd_init_interrupts()
134 retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET + in get_sdma_rlc_reg_offset()
135 m->sdma_queue_id * KFD_VI_SDMA_QUEUE_OFFSET; in get_sdma_rlc_reg_offset()
138 m->sdma_engine_id, m->sdma_queue_id, retval); in get_sdma_rlc_reg_offset()
168 if (m->cp_hqd_vmid == 0) { in kgd_hqd_load()
[all …]
Damdgpu_amdkfd_gfx_v10.c45 mutex_lock(&adev->srbm_mutex); in lock_srbm()
52 mutex_unlock(&adev->srbm_mutex); in unlock_srbm()
58 uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in acquire_queue()
59 uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in acquire_queue()
67 unsigned int bit = pipe_id * adev->gfx.mec.num_queue_per_pipe + in get_queue_mask()
134 /* TODO - RING0 form of field is obsolete, seems to date back to SI
143 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1; in kgd_init_interrupts()
144 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec); in kgd_init_interrupts()
163 mmSDMA0_RLC0_RB_CNTL) - mmSDMA0_RLC0_RB_CNTL, in get_sdma_rlc_reg_offset()
171 mmSDMA1_RLC0_RB_CNTL) - mmSDMA0_RLC0_RB_CNTL in get_sdma_rlc_reg_offset()
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/Linux-v6.1/Documentation/devicetree/bindings/ipmi/
Dipmi-ipmb.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/ipmi/ipmi-ipmb.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
12 - Corey Minyard <cminyard@mvista.com>
17 - ipmi-ipmb
21 - const: "ipmi"
30 retry-time:
33 Time between retries of sends, in milliseconds. Defaults to 250.
35 max-retries:
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/Linux-v6.1/include/scsi/
Dscsi_status.h1 /* SPDX-License-Identifier: GPL-2.0 */
26 INITIATE_RECOVERY = 0x0f, /* SCSI-II only */
27 RELEASE_RECOVERY = 0x10, /* SCSI-II only */
28 TERMINATE_IO_PROC = 0x11, /* SCSI-II only */
47 DID_BUS_BUSY = 0x02, /* BUS stayed busy through time out period */
55 DID_PASSTHROUGH = 0x0a, /* Force command past mid-layer */
56 DID_SOFT_ERROR = 0x0b, /* The low level driver just wish a retry */
57 DID_IMM_RETRY = 0x0c, /* Retry without decrementing retry count */
58 DID_REQUEUE = 0x0d, /* Requeue command (no immediate retry) also
59 * without decrementing the retry count */
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/Linux-v6.1/Documentation/devicetree/bindings/i2c/
Di2c-arb-gpio-challenge.txt1 GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
7 the standard I2C multi-master rules. Using GPIOs is generally useful in
21 others can see. These are all active low with pull-ups enabled. We'll
24 - OUR_CLAIM: output from us signaling to other hosts that we want the bus
25 - THEIR_CLAIMS: output from others signaling that they want the bus
33 2. Waits a little bit for the other sides to notice (slew time, say 10
39 6. Go back to 1 (until retry time has expired).
43 - compatible: i2c-arb-gpio-challenge
44 - our-claim-gpio: The GPIO that we use to claim the bus.
45 - their-claim-gpios: The GPIOs that the other sides use to claim the bus.
[all …]
/Linux-v6.1/tools/testing/selftests/bpf/prog_tests/
Dstacktrace_build_id_nmi.c1 // SPDX-License-Identifier: GPL-2.0
15 "return default value: 5000,err %d\n", -errno); in read_perf_max_sample_freq()
35 int retry = 1; in test_stacktrace_build_id_nmi() local
39 retry: in test_stacktrace_build_id_nmi()
45 bpf_program__set_type(skel->progs.oncpu, BPF_PROG_TYPE_PERF_EVENT); in test_stacktrace_build_id_nmi()
51 pmu_fd = syscall(__NR_perf_event_open, &attr, -1 /* pid */, in test_stacktrace_build_id_nmi()
52 0 /* cpu 0 */, -1 /* group id */, in test_stacktrace_build_id_nmi()
63 skel->links.oncpu = bpf_program__attach_perf_event(skel->progs.oncpu, in test_stacktrace_build_id_nmi()
65 if (!ASSERT_OK_PTR(skel->links.oncpu, "attach_perf_event")) { in test_stacktrace_build_id_nmi()
71 control_map_fd = bpf_map__fd(skel->maps.control_map); in test_stacktrace_build_id_nmi()
[all …]
Dstacktrace_build_id.c1 // SPDX-License-Identifier: GPL-2.0
16 int retry = 1; in test_stacktrace_build_id() local
18 retry: in test_stacktrace_build_id()
28 control_map_fd = bpf_map__fd(skel->maps.control_map); in test_stacktrace_build_id()
29 stackid_hmap_fd = bpf_map__fd(skel->maps.stackid_hmap); in test_stacktrace_build_id()
30 stackmap_fd = bpf_map__fd(skel->maps.stackmap); in test_stacktrace_build_id()
31 stack_amap_fd = bpf_map__fd(skel->maps.stack_amap); in test_stacktrace_build_id()
61 err = bpf_map__get_next_key(skel->maps.stackmap, NULL, &key, sizeof(key)); in test_stacktrace_build_id()
83 } while (bpf_map__get_next_key(skel->maps.stackmap, &prev_key, &key, sizeof(key)) == 0); in test_stacktrace_build_id()
87 * try it one more time. in test_stacktrace_build_id()
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/Linux-v6.1/arch/powerpc/include/asm/
Dhvcall.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 #define H_BUSY 1 /* Hardware busy -- retry later */
21 is a good time to retry */
23 is a good time to retry */
25 is a good time to retry */
27 is a good time to retry */
29 is a good time to retry */
31 is a good time to retry */
37 #define H_HARDWARE -1 /* Hardware error */
38 #define H_FUNCTION -2 /* Function not supported */
[all …]
/Linux-v6.1/net/atm/
Dlec.h1 /* SPDX-License-Identifier: GPL-2.0 */
98 * Within the period of time defined by this variable, the client will send
103 * If no traffic has been sent in this vcc for this period of time,
108 * An LE Client MUST not retry an LE_ARP_REQUEST for a
109 * given frame's LAN Destination more than maximum retry count times,
114 * Max time the client will maintain an entry in its arp cache in
119 * Max time the client will maintain an entry in cache when
125 * Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE
130 * Time limit ot wait to receive an LE_FLUSH_RESPONSE after the
134 /* The time since sending a frame to the bus after which the
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/Linux-v6.1/drivers/iio/imu/bno055/
Dbno055_ser_core.c1 // SPDX-License-Identifier: GPL-2.0
7 * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
33 * +------+------+-----+-----+----- ... ----+
35 * +------+------+-----+-----+----- ... ----+
38 * +------+----------+
40 * +------+----------+
45 * sw resets - bno055 on serial bus basically requires the hw reset pin).
48 * +------+------+-----+-----+
50 * +------+------+-----+-----+
53 * +------+-----+----- ... ----+
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/Linux-v6.1/drivers/parport/
Dieee1284_ops.c1 // SPDX-License-Identifier: GPL-2.0
2 /* IEEE-1284 operations for parport.
5 * they are used by the low-level drivers. If they have a special way
7 * the function pointers in port->ops); if not, they can just use these
31 * One-way data transfer functions. *
43 struct pardevice *dev = port->physport->cad; in parport_ieee1284_write_compat()
47 if (port->irq != PARPORT_IRQ_NONE) { in parport_ieee1284_write_compat()
52 port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA; in parport_ieee1284_write_compat()
56 unsigned long expire = jiffies + dev->timeout; in parport_ieee1284_write_compat()
84 /* Have we run out of time? */ in parport_ieee1284_write_compat()
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/Linux-v6.1/Documentation/ABI/stable/
Dsysfs-devices-system-xen_memory9 A value of zero means retry forever and is the default one.
28 to retry with a 'schedule_delay' delay.
35 The time (in seconds) to wait between attempts to
36 increase the balloon. Each time the balloon cannot be
82 Contact: xen-devel@lists.xenproject.org
/Linux-v6.1/kernel/futex/
Dwaitwake.c1 // SPDX-License-Identifier: GPL-2.0-or-later
63 * smp_mb(); (A) <-- paired with -.
72 * `--------> smp_mb(); (B)
79 * waiters--; (b) unlock(hash_bucket(futex));
103 * acquiring the lock. It then decrements them again after releasing it -
117 struct task_struct *p = q->task; in futex_wake_mark()
119 if (WARN(q->pi_state || q->rt_waiter, "refusing to wake PI futex\n")) in futex_wake_mark()
125 * The waiting task can free the futex_q as soon as q->lock_ptr = NULL in futex_wake_mark()
131 smp_store_release(&q->lock_ptr, NULL); in futex_wake_mark()
135 * the hb->lock. in futex_wake_mark()
[all …]
/Linux-v6.1/tools/testing/selftests/vm/
Dmrelease_test.c1 // SPDX-License-Identifier: GPL-2.0
18 #define __NR_pidfd_open -1
22 #define __NR_process_mrelease -1
54 timeout--; in alloc_noexit()
67 if (!syscall(__NR_process_mrelease, pidfd, (unsigned int)-1) || in run_negative_tests()
88 /* Allocate and fault-in memory and wait to be killed */ in child_main()
98 bool success, retry; in main() local
105 if (!syscall(__NR_process_mrelease, -1, 0) || errno != EBADF) { in main()
113 retry: in main()
173 * which causes it to spend more time on cleanup and increases in main()
[all …]
Dmremap_test.c1 // SPDX-License-Identifier: GPL-2.0
12 #include <time.h>
41 _1KB = 1ULL << 10, /* 1KB -> not page aligned */
80 -1, 0); in is_remap_region_valid()
136 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); in mremap_expand_merge()
147 while (getline(&line, &len, fp) != -1) { in mremap_expand_merge()
148 char *first = strtok(line, "- "); in mremap_expand_merge()
150 char *second = strtok(NULL, "- "); in mremap_expand_merge()
177 retry: in get_source_mapping()
180 goto retry; in get_source_mapping()
[all …]
/Linux-v6.1/drivers/usb/core/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
30 Documentation/driver-api/usb/persist.rst for more info.
39 to initialize and enumerate it, with lots of nested retry loops.
40 This almost always works, but when it fails it can take a long time.
41 This option tells the kernel to make only a few retry attempts,
42 so that the total time required for a failed initialization is
45 Say N here unless you require new-device enumeration failure to
64 "Dual-Role" device, which can act as either a device
69 Select this only if your board has Mini-AB/Micro-AB
97 Implements OTG Finite State Machine as specified in On-The-Go
/Linux-v6.1/drivers/mfd/
Dgateworks-gsc.c1 // SPDX-License-Identifier: GPL-2.0
3 * The Gateworks System Controller (GSC) is a multi-function
6 * system functions such as push-button monitoring, multiple ADC's for
35 int retry, ret; in gsc_write() local
37 for (retry = 0; retry < I2C_RETRIES; retry++) { in gsc_write()
40 * -EAGAIN returned when the i2c host controller is busy in gsc_write()
41 * -EIO returned when i2c device is busy in gsc_write()
43 if (ret != -EAGAIN && ret != -EIO) in gsc_write()
54 int retry, ret; in gsc_read() local
56 for (retry = 0; retry < I2C_RETRIES; retry++) { in gsc_read()
[all …]
/Linux-v6.1/drivers/s390/block/
Ddasd_3990_erp.c1 // SPDX-License-Identifier: GPL-2.0
10 #define KMSG_COMPONENT "dasd-eckd"
55 struct dasd_ccw_req *cqr = erp->refers; in dasd_3990_erp_cleanup()
57 dasd_free_erp_request(erp, erp->memdev); in dasd_3990_erp_cleanup()
58 cqr->status = final_status; in dasd_3990_erp_cleanup()
74 struct dasd_device *device = erp->startdev; in dasd_3990_erp_block_queue()
80 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_3990_erp_block_queue()
82 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_3990_erp_block_queue()
83 erp->status = DASD_CQR_FILLED; in dasd_3990_erp_block_queue()
84 if (erp->block) in dasd_3990_erp_block_queue()
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