| /kernel/linux/linux-5.10/drivers/base/power/ |
| D | qos.c | 1 // SPDX-License-Identifier: GPL-2.0
7 * This module exposes the interface to kernel space for specifying
8 * per-device PM QoS dependencies. It provides infrastructure for registration
16 * Watchers can register a per-device notification callback using the
18 * per-device constraint data struct.
20 * Note about the per-device constraint data struct allocation:
21 * . The per-device constraints data struct ptr is stored into the device
23 * . To minimize the data usage by the per-device constraints, the data struct
46 * __dev_pm_qos_flags - Check PM QoS flags for a given device.
50 * This routine must be called with dev->power.lock held.
[all …]
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| /kernel/linux/linux-6.6/drivers/base/power/ |
| D | qos.c | 1 // SPDX-License-Identifier: GPL-2.0
7 * This module exposes the interface to kernel space for specifying
8 * per-device PM QoS dependencies. It provides infrastructure for registration
16 * Watchers can register a per-device notification callback using the
18 * per-device constraint data struct.
20 * Note about the per-device constraint data struct allocation:
21 * . The per-device constraints data struct ptr is stored into the device
23 * . To minimize the data usage by the per-device constraints, the data struct
46 * __dev_pm_qos_flags - Check PM QoS flags for a given device.
50 * This routine must be called with dev->power.lock held.
[all …]
|
| /kernel/linux/linux-6.6/Documentation/power/powercap/ |
| D | dtpm.rst | 1 .. SPDX-License-Identifier: GPL-2.0
18 The user space is the most adequate place to dynamically act on the
48 `-- pkg
50 |-- pd0 (cpu0-3)
52 `-- pd1 (cpu4-5)
56 SoC (400mW - 3100mW)
58 `-- pkg (400mW - 3100mW)
60 |-- pd0 (100mW - 700mW)
62 `-- pd1 (300mW - 2400mW)
66 SoC (600mW - 5900mW)
[all …]
|
| D | powercap.rst | 6 and the user space that allows power capping drivers to expose the settings to
7 user space in a uniform way.
12 The framework exposes power capping devices to user space via sysfs in the
15 example, the intel-rapl control type represents the Intel "Running Average
16 Power Limit" (RAPL) technology, whereas the 'idle-injection' control type
35 └──intel-rapl
36 ├──intel-rapl:0
43 │ ├──device -> ../../intel-rapl
45 │ ├──intel-rapl:0:0
52 │ │ ├──device -> ../../intel-rapl:0
[all …]
|
| /kernel/linux/linux-5.10/Documentation/power/powercap/ |
| D | powercap.rst | 6 and the user space that allows power capping drivers to expose the settings to
7 user space in a uniform way.
12 The framework exposes power capping devices to user space via sysfs in the
15 example, the intel-rapl control type represents the Intel "Running Average
16 Power Limit" (RAPL) technology, whereas the 'idle-injection' control type
35 └──intel-rapl
36 ├──intel-rapl:0
43 │ ├──device -> ../../intel-rapl
45 │ ├──intel-rapl:0:0
52 │ │ ├──device -> ../../intel-rapl:0
[all …]
|
| /kernel/linux/linux-6.6/kernel/power/ |
| D | qos.c | 1 // SPDX-License-Identifier: GPL-2.0-only
15 * or through a built-in notification mechanism.
50 * pm_qos_read_value - Return the current effective constraint value.
51 * @c: List of PM QoS constraint requests.
55 return READ_ONCE(c->target_value); in pm_qos_read_value()
60 if (plist_head_empty(&c->list)) in pm_qos_get_value()
61 return c->no_constraint_value; in pm_qos_get_value()
63 switch (c->type) { in pm_qos_get_value()
65 return plist_first(&c->list)->prio; in pm_qos_get_value()
68 return plist_last(&c->list)->prio; in pm_qos_get_value()
[all …]
|
| /kernel/linux/linux-5.10/kernel/power/ |
| D | qos.c | 1 // SPDX-License-Identifier: GPL-2.0-only
15 * or through a built-in notification mechanism.
50 * pm_qos_read_value - Return the current effective constraint value.
51 * @c: List of PM QoS constraint requests.
55 return READ_ONCE(c->target_value); in pm_qos_read_value()
60 if (plist_head_empty(&c->list)) in pm_qos_get_value()
61 return c->no_constraint_value; in pm_qos_get_value()
63 switch (c->type) { in pm_qos_get_value()
65 return plist_first(&c->list)->prio; in pm_qos_get_value()
68 return plist_last(&c->list)->prio; in pm_qos_get_value()
[all …]
|
| /kernel/linux/linux-5.10/Documentation/arm/ |
| D | porting.rst | 5 Taken from list archive at http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/00406…
8 -------------------
14 phys = virt - PAGE_OFFSET + PHYS_OFFSET
18 --------------------
25 to be located in RAM, it can be in flash or other read-only or
26 read-write addressable medium.
29 Start address of zero-initialised work area for the decompressor.
35 and eventually executed. The following constraint must be valid:
48 Virtual address of the initial RAM disk. The following constraint
59 --------------
[all …]
|
| /kernel/linux/linux-6.6/Documentation/arch/arm/ |
| D | porting.rst | 5 Taken from list archive at http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/00406…
8 -------------------
14 phys = virt - PAGE_OFFSET + PHYS_OFFSET
18 --------------------
25 to be located in RAM, it can be in flash or other read-only or
26 read-write addressable medium.
29 Start address of zero-initialised work area for the decompressor.
35 and eventually executed. The following constraint must be valid:
48 Virtual address of the initial RAM disk. The following constraint
59 --------------
[all …]
|
| /kernel/linux/linux-6.6/include/linux/ |
| D | oom.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
43 * order == -1 means the oom kill is required by sysrq, otherwise only
53 /* Used to print the constraint info. */
54 enum oom_constraint constraint; member
62 current->signal->oom_flag_origin = true; in set_current_oom_origin()
67 current->signal->oom_flag_origin = false; in clear_current_oom_origin()
72 return p->signal->oom_flag_origin; in oom_task_origin()
77 return tsk->signal->oom_mm; in tsk_is_oom_victim()
83 * address space which is reflected by MMF_UNSTABLE flag set in
95 if (unlikely(test_bit(MMF_UNSTABLE, &mm->flags))) in check_stable_address_space()
|
| /kernel/linux/linux-5.10/include/linux/ |
| D | oom.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
43 * order == -1 means the oom kill is required by sysrq, otherwise only
53 /* Used to print the constraint info. */
54 enum oom_constraint constraint; member
62 current->signal->oom_flag_origin = true; in set_current_oom_origin()
67 current->signal->oom_flag_origin = false; in clear_current_oom_origin()
72 return p->signal->oom_flag_origin; in oom_task_origin()
77 return tsk->signal->oom_mm; in tsk_is_oom_victim()
81 * Use this helper if tsk->mm != mm and the victim mm needs a special
86 return test_bit(MMF_OOM_VICTIM, &mm->flags); in mm_is_oom_victim()
[all …]
|
| /kernel/linux/linux-5.10/sound/core/ |
| D | pcm_lib.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Abramo Bagnara <abramo@alsa-project.org>
38 * runtime->silence_start: starting pointer to silence area
39 * runtime->silence_filled: size filled with silence
40 * runtime->silence_threshold: threshold from application
41 * runtime->silence_size: maximal size from application
43 * when runtime->silence_size >= runtime->boundary - fill processed area with silence immediately
47 struct snd_pcm_runtime *runtime = substream->runtime; in snd_pcm_playback_silence()
51 if (runtime->silence_size < runtime->boundary) { in snd_pcm_playback_silence()
53 snd_pcm_uframes_t appl_ptr = READ_ONCE(runtime->control->appl_ptr); in snd_pcm_playback_silence()
[all …]
|
| /kernel/linux/linux-6.6/sound/core/ |
| D | pcm_lib.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Abramo Bagnara <abramo@alsa-project.org>
43 delta = new_ptr - ptr; in update_silence_vars()
47 delta += runtime->boundary; in update_silence_vars()
48 if ((snd_pcm_uframes_t)delta < runtime->silence_filled) in update_silence_vars()
49 runtime->silence_filled -= delta; in update_silence_vars()
51 runtime->silence_filled = 0; in update_silence_vars()
52 runtime->silence_start = new_ptr; in update_silence_vars()
57 * runtime->silence_start: starting pointer to silence area
58 * runtime->silence_filled: size filled with silence
[all …]
|
| /kernel/linux/linux-6.6/Documentation/driver-api/thermal/ |
| D | intel_dptf.rst | 1 .. SPDX-License-Identifier: GPL-2.0
12 ------------
25 to user space. This allows user space thermal solutions like
31 ----------------------------
39 user space can support those policies.
43 "42A441D6-AE6A-462b-A84B-4A8CE79027D3" : Passive 1
45 "3A95C389-E4B8-4629-A526-C52C88626BAE" : Active
47 "97C68AE7-15FA-499c-B8C9-5DA81D606E0A" : Critical
49 "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D" : Adaptive performance
51 "5349962F-71E6-431D-9AE8-0A635B710AEE" : Emergency call
[all …]
|
| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
27 CPU idle time management is an energy-efficiency feature concerned about using
31 ------------
37 software as individual single-core processors. In other words, a CPU is an
46 Second, if the processor is multi-core, each core in it is able to follow at
61 Finally, each core in a multi-core processor may be able to follow more than one
66 multiple individual single-core "processors", referred to as *hardware threads*
67 (or hyper-threads specifically on Intel hardware), that each can follow one
78 ---------
112 .. _idle-loop:
[all …]
|
| /kernel/linux/linux-6.6/Documentation/admin-guide/pm/ |
| D | cpuidle.rst | 1 .. SPDX-License-Identifier: GPL-2.0
27 CPU idle time management is an energy-efficiency feature concerned about using
31 ------------
37 software as individual single-core processors. In other words, a CPU is an
46 Second, if the processor is multi-core, each core in it is able to follow at
61 Finally, each core in a multi-core processor may be able to follow more than one
66 multiple individual single-core "processors", referred to as *hardware threads*
67 (or hyper-threads specifically on Intel hardware), that each can follow one
78 ---------
112 .. _idle-loop:
[all …]
|
| /kernel/linux/linux-6.6/kernel/ |
| D | resource.c | 1 // SPDX-License-Identifier: GPL-2.0-only
44 .end = -1,
61 if (p->child) in next_resource()
62 return p->child; in next_resource()
63 while (!p->sibling && p->parent) in next_resource()
64 p = p->parent; in next_resource()
65 return p->sibling; in next_resource()
70 while (!p->sibling && p->parent) in next_resource_skip_children()
71 p = p->parent; in next_resource_skip_children()
72 return p->sibling; in next_resource_skip_children()
[all …]
|
| /kernel/linux/linux-6.6/mm/ |
| D | oom_kill.c | 1 // SPDX-License-Identifier: GPL-2.0-only
15 * Since we won't call these routines often (on a well-configured
73 return oc->memcg != NULL; in is_memcg_oom()
78 * oom_cpuset_eligible() - check task eligibility for kill
86 * This function is assuming oom-killer context and 'current' has triggered
87 * the oom-killer.
94 const nodemask_t *mask = oc->nodemask; in oom_cpuset_eligible()
128 * The process p may have detached its own ->mm while exiting or through
130 * pointer. Return p, or any of its subthreads with a valid ->mm, with
141 if (likely(t->mm)) in find_lock_task_mm()
[all …]
|
| /kernel/linux/linux-5.10/mm/ |
| D | oom_kill.c | 1 // SPDX-License-Identifier: GPL-2.0-only
15 * Since we won't call these routines often (on a well-configured
72 return oc->memcg != NULL; in is_memcg_oom()
77 * oom_cpuset_eligible() - check task eligiblity for kill
85 * This function is assuming oom-killer context and 'current' has triggered
86 * the oom-killer.
93 const nodemask_t *mask = oc->nodemask; in oom_cpuset_eligible()
130 * The process p may have detached its own ->mm while exiting or through
132 * pointer. Return p, or any of its subthreads with a valid ->mm, with
143 if (likely(t->mm)) in find_lock_task_mm()
[all …]
|
| /kernel/linux/linux-5.10/Documentation/sound/designs/ |
| D | tracepoints.rst | 19 ------------------------------------
25 -----------------------------------------------------
53 - SNDRV_PCM_HW_PARAM_ACCESS
54 - SNDRV_PCM_HW_PARAM_FORMAT
55 - SNDRV_PCM_HW_PARAM_SUBFORMAT
61 - SNDRV_PCM_HW_PARAM_SAMPLE_BITS
62 - SNDRV_PCM_HW_PARAM_FRAME_BITS
63 - SNDRV_PCM_HW_PARAM_CHANNELS
64 - SNDRV_PCM_HW_PARAM_RATE
65 - SNDRV_PCM_HW_PARAM_PERIOD_TIME
[all …]
|
| /kernel/linux/linux-6.6/Documentation/sound/designs/ |
| D | tracepoints.rst | 19 ------------------------------------
25 -----------------------------------------------------
53 - SNDRV_PCM_HW_PARAM_ACCESS
54 - SNDRV_PCM_HW_PARAM_FORMAT
55 - SNDRV_PCM_HW_PARAM_SUBFORMAT
61 - SNDRV_PCM_HW_PARAM_SAMPLE_BITS
62 - SNDRV_PCM_HW_PARAM_FRAME_BITS
63 - SNDRV_PCM_HW_PARAM_CHANNELS
64 - SNDRV_PCM_HW_PARAM_RATE
65 - SNDRV_PCM_HW_PARAM_PERIOD_TIME
[all …]
|
| /kernel/linux/linux-5.10/arch/openrisc/mm/ |
| D | init.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
60 * Map all physical memory into kernel's address space.
62 * This is explicitly coded for two-level page tables, so if you need
76 /* These mark extents of read-only kernel pages... in map_ram()
97 "two-level page tables", in map_ram()
123 printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__, in map_ram()
168 *itlb_vector = ((unsigned long)&itlb_miss_handler - in paging_init()
171 /* Soft ordering constraint to ensure that dtlb_vector is in paging_init()
177 *dtlb_vector = ((unsigned long)&dtlb_miss_handler - in paging_init()
[all …]
|
| /kernel/linux/linux-6.6/arch/x86/include/asm/ |
| D | uaccess_64.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
6 * User space memory access functions
10 #include <linux/kasan-checks.h>
22 * Refer tlbstate_untag_mask directly to avoid RIP-relative relocation in __untagged_addr()
42 return addr & (mm)->context.untag_mask; in __untagged_addr_remote()
53 * The virtual address space space is logically divided into a kernel
60 * User pointers can have tag bits on x86-64. This scheme tolerates
64 * 1. 'ptr' must be in the user half of the address space
68 * and will GP-fault even with LAM enabled if the sign bit is set (see
78 * at 'ptr', and even if the end might be in kernel space, we'll
[all …]
|
| /kernel/linux/linux-6.6/arch/openrisc/mm/ |
| D | init.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
56 * Map all physical memory into kernel's address space.
58 * This is explicitly coded for two-level page tables, so if you need
72 /* These mark extents of read-only kernel pages... in map_ram()
93 "two-level page tables", in map_ram()
119 printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__, in map_ram()
159 *itlb_vector = ((unsigned long)&itlb_miss_handler - in paging_init()
162 /* Soft ordering constraint to ensure that dtlb_vector is in paging_init()
168 *dtlb_vector = ((unsigned long)&dtlb_miss_handler - in paging_init()
[all …]
|
| /kernel/linux/linux-5.10/kernel/ |
| D | resource.c | 1 // SPDX-License-Identifier: GPL-2.0-only
41 .end = -1,
68 return p->sibling; in next_resource()
70 if (p->child) in next_resource()
71 return p->child; in next_resource()
72 while (!p->sibling && p->parent) in next_resource()
73 p = p->parent; in next_resource()
74 return p->sibling; in next_resource()
91 struct resource *p = PDE_DATA(file_inode(m->file)); in r_start()
94 for (p = p->child; p && l < *pos; p = r_next(m, p, &l)) in r_start()
[all …]
|