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/linux/fs/nfs/blocklayout/
H A Dextent_tree.c27 ext_tree_prev(struct pnfs_block_extent *be) in ext_tree_prev() argument
29 struct rb_node *node = rb_prev(&be->be_node); in ext_tree_prev()
34 ext_tree_next(struct pnfs_block_extent *be) in ext_tree_next() argument
36 struct rb_node *node = rb_next(&be->be_node); in ext_tree_next()
41 ext_f_end(struct pnfs_block_extent *be) in ext_f_end() argument
43 return be->be_f_offset + be->be_length; in ext_f_end()
50 struct pnfs_block_extent *be = NULL; in __ext_tree_search() local
53 be = ext_node(node); in __ext_tree_search()
54 if (start < be->be_f_offset) in __ext_tree_search()
56 else if (start >= ext_f_end(be)) in __ext_tree_search()
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/linux/Documentation/arch/arm64/
H A Dbooting.rst20 hypervisor code, or it may just be a handful of instructions for
53 The device tree blob (dtb) must be placed on an 8-byte boundary and must
54 not exceed 2 megabytes in size. Since the dtb will be mapped cacheable
55 using blocks of up to 2 megabytes in size, it must not be placed within
56 any 2M region which must be mapped with any specific attributes.
58 NOTE: versions prior to v4.2 also require that the DTB be placed within
67 therefore requires decompression (gzip etc.) to be performed by the boot
106 little-endian and must be respected. Where image_size is zero,
107 text_offset can be assumed to be 0x80000.
113 Bit 0 Kernel endianness. 1 if BE, 0 if LE.
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H A Dgcs.rst9 intended to be exhaustive.
28 GCSPR_EL0. This is readable by userspace but can only be updated
43 at runtime this should be done with great care.
47 * GCS specific errors (those reported with EC 0x2d) will be reported as
56 in LR match those in the GCS, the LR will be ignored. This is not supported
66 should be used.
82 status of the specified GCS mode bits will be rejected.
84 * PR_LOCK_SHADOW_STACK_STATUS allows any bit to be locked, this allows
91 thread that called them, any other running threads will be unaffected.
97 * The current GCS configuration for a thread may be read with the
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H A Dacpi_object_usage.rst55 Must be supplied if RAS support is provided by the platform. It
56 is recommended this table be supplied.
62 Microsoft only table, will not be supported.
96 License has changed and should be usable. Optional if used instead
103 Microsoft only table, will not be supported.
119 x86 only table, will not be supported.
131 Optional, not currently supported, but could be used on ARM if and
134 need to be modified in the ACPI specification.
142 if it had actually occurred. However, this table should not be
143 shipped with a production system; it should be dynamically loaded
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/linux/drivers/hwmon/
H A DKconfig23 This support can also be built as a module. If so, the module
24 will be called hwmon.
48 chip can be found on Abit uGuru featuring motherboards (most modern
53 This driver can also be built as a module. If so, the module
54 will be called abituguru.
63 uGuru chip can be found on recent Abit motherboards (since end
67 This driver can also be built as a module. If so, the module
68 will be called abituguru3.
85 This driver can also be built as a module. If so, the module
86 will be called ad7314.
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/linux/drivers/rtc/
H A DKconfig20 be allowed to plug one or more RTCs to your system. You will
29 If you say yes here, the system time (wall clock) will be set using
38 The RTC device that will be used to (re)initialize the system
44 This clock should be battery-backed, so that it reads the correct
49 be useful to reinitialize system time when resuming from system
57 If you say yes here, the system time (wall clock) will be stored
114 Other RTCs will not be available through that API.
129 can be accessed as /dev/rtc, which is a name
151 RTC test driver. It's a software RTC which can be
158 This driver can also be built as a module. If so, the module
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/linux/tools/perf/util/
H A Dgenelf_debug.c47 buffer_ext_dump(struct buffer_ext *be, const char *msg) in buffer_ext_dump() argument
51 for (i = 0 ; i < be->cur_pos; i++) in buffer_ext_dump()
52 warnx("%4zu 0x%02x", i, (((char *)be->data)[i]) & 0xff); in buffer_ext_dump()
56 buffer_ext_add(struct buffer_ext *be, void *addr, size_t sz) in buffer_ext_add() argument
59 size_t be_sz = be->max_sz; in buffer_ext_add()
62 if ((be->cur_pos + sz) < be_sz) { in buffer_ext_add()
63 memcpy(be->data + be->cur_pos, addr, sz); in buffer_ext_add()
64 be->cur_pos += sz; in buffer_ext_add()
73 tmp = realloc(be->data, be_sz); in buffer_ext_add()
77 be->data = tmp; in buffer_ext_add()
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/linux/Documentation/devicetree/bindings/regulator/
H A Dregulator.yaml41 description: boolean, regulator should never be disabled
49 This property is intended to only be used for regulators where
58 description: allow the regulator performance level to be configured
63 disabling ramp rate, it should be explicitly initialised to zero (regulator-ramp-delay
105 for the regulator at run-time. Elements may be specified in any order.
131 hardware performs emergency shutdown. Zero can be passed to disable
132 protection and value '1' indicates that protection should be enabled but
133 limit setting can be omitted.
138 Zero can be passed to disable error detection and value '1' indicates
139 that detection should be enabled but limit setting can be omitted.
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/linux/Documentation/security/keys/
H A Dcore.rst6 user mappings, and similar to be cached in the kernel for the use of
13 The key service can be configured on by enabling:
46 * Each key is of a defined "type". Types must be registered inside the
48 can be added or used. Userspace programs cannot define new types directly.
51 number of operations that can be performed on a key of that type.
53 Should a type be removed from the system, all the keys of that type will
54 be invalidated.
56 * Each key has a description. This should be a printable string. The key
62 whether a kernel service will be able to find the key.
64 * Each key can be set to expire at a specific time by the key type's
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/linux/fs/btrfs/
H A Dref-verify.c30 * be used to verify the extent tree is consistent as these should all match
48 * were called with since it could be different from ref_root. We also store
99 struct block_entry *be) in insert_block_entry() argument
103 node = rb_find_add(&be->node, root, block_entry_bytenr_cmp); in insert_block_entry()
217 static void free_block_entry(struct block_entry *be) in free_block_entry() argument
224 while ((n = rb_first(&be->roots))) { in free_block_entry()
226 rb_erase(&re->node, &be->roots); in free_block_entry()
230 while((n = rb_first(&be->refs))) { in free_block_entry()
232 rb_erase(&ref->node, &be->refs); in free_block_entry()
236 while (!list_empty(&be->actions)) { in free_block_entry()
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/linux/drivers/i2c/muxes/
H A DKconfig14 If you say yes to this option, support will be included for an
19 This driver can also be built as a module. If so, the module
20 will be called i2c-arb-gpio-challenge.
26 If you say yes to this option, support will be included for a
31 This driver can also be built as a module. If so, the module
32 will be called i2c-mux-gpio.
39 If you say yes to this option, support will be included for a
44 This driver can also be built as a module. If so, the module
45 will be called i2c-mux-gpmux.
55 This driver can also be built as a module. If so, the module
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/linux/net/sched/
H A DKconfig17 is a FIFO (first come, first served). If you say Y here, you will be
19 then be attached to different network devices. This is useful for
23 This code is considered to be experimental.
37 If you say Y here and to "/proc file system" below, you will be able
60 module will be called sch_htb.
69 module will be called sch_hfsc.
78 module will be called sch_prio.
87 module will be called sch_multiq.
98 module will be called sch_red.
109 module will be called sch_sfb.
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/linux/Documentation/process/
H A D4.Coding.rst6 While there is much to be said for a solid and community-oriented design
8 code. It is the code which will be examined by other developers and merged
34 the standard; many developers will request that the code be reformatted
42 win before the code can be merged. Putting code into the kernel means
53 on it for other reasons, but coding style changes should not be made for
56 The coding style document also should not be read as an absolute law which
57 can never be transgressed. If there is a good reason to go against the
69 Some basic editor settings, such as indentation and line endings, will be
81 But experience has shown that excessive or premature abstraction can be
82 just as harmful as premature optimization. Abstraction should be used to
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/linux/drivers/input/misc/
H A DKconfig8 Say Y here, and a list of miscellaneous input drivers will be displayed.
24 will be called 88pm860x_onkey.
34 will be called 88pm80x_onkey.
51 will be called ab8500-ponkey.
61 module will be called ad714x.
71 module will be called ad714x-i2c.
81 module will be called ad714x-spi.
92 will be called ariel-pwrbutton.
102 module will be called arizona-haptics.
109 power button status. ONKEY can be used to wakeup from low power
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/linux/drivers/net/xen-netback/
H A Dxenbus.c13 static int connect_data_rings(struct backend_info *be,
15 static void connect(struct backend_info *be);
16 static int read_xenbus_vif_flags(struct backend_info *be);
17 static int backend_create_xenvif(struct backend_info *be);
18 static void unregister_hotplug_status_watch(struct backend_info *be);
20 static void set_backend_state(struct backend_info *be,
206 struct backend_info *be = dev_get_drvdata(&xdev->dev); in netback_uevent() local
208 if (!be) in netback_uevent()
211 if (add_uevent_var(env, "script=%s", be->hotplug_script)) in netback_uevent()
214 if (!be->vif) in netback_uevent()
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/linux/sound/soc/
H A Dsoc-pcm.c51 /* is the current PCM operation for this BE ? */
53 struct snd_soc_pcm_runtime *be, int stream) in snd_soc_dpcm_can_be_update() argument
57 be->dpcm[stream].runtime_update)) in snd_soc_dpcm_can_be_update()
63 struct snd_soc_pcm_runtime *be, in snd_soc_dpcm_check_state() argument
73 for_each_dpcm_fe(be, stream, dpcm) { in snd_soc_dpcm_check_state()
87 /* it's safe to do this BE DAI */ in snd_soc_dpcm_check_state()
92 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
96 struct snd_soc_pcm_runtime *be, int stream) in snd_soc_dpcm_can_be_free_stop() argument
104 return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); in snd_soc_dpcm_can_be_free_stop()
108 * We can only change hw params a BE DAI if any of it's FE are not prepared,
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/linux/drivers/iio/light/
H A DKconfig21 be called acpi-als.
32 This driver can also be built as a module. If so, the module
33 will be called adjd_s311.
44 module will be called adux1020.
55 module will be called al3000a.
66 module will be called al3010.
77 module will be called al3320a.
88 module will be called apds9160.
98 module will be called apds9300.
109 If built as a dynamically linked module, it will be called
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/linux/drivers/input/touchscreen/
H A DKconfig8 Say Y here, and a list of supported touchscreens will be displayed.
25 module will be called 88pm860x-ts.
44 module will be called ads7846.
57 module will be called ad7877.
68 module will be called ad7879.
78 module will be called ad7879-i2c.
90 module will be called ad7879-spi.
104 module will be called resistive-adc-touch.ko.
116 module will be called apple_z2.
128 module will be called ar1021_i2c.
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/linux/drivers/comedi/
H A DKconfig30 be requested by a userspace program without root privileges.
37 Enable comedi misc drivers to be built
54 To compile this driver as a module, choose M here: the module will be
61 This driver is mainly for testing purposes, but can also be used to
65 To compile this driver as a module, choose M here: the module will be
77 To compile this driver as a module, choose M here: the module will be
87 To compile this driver as a module, choose M here: the module will be
97 Enable comedi ISA and PC/104 drivers to be built
111 To compile this driver as a module, choose M here: the module will be
132 To compile this driver as a module, choose M here: the module will be
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/linux/drivers/media/usb/gspca/
H A DKconfig17 module will be called gspca_main.
28 module will be called gspca_benq.
37 module will be called gspca_conex.
48 module will be called gspca_cpia1.
58 module will be called gspca_dtcs033.
67 module will be called gspca_etoms.
76 module will be called gspca_finepix.
85 module will be called gspca_jeilinj.
95 module will be called gspca_jl2005bcd.
104 module will be called gspca_kinect.
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/linux/sound/soc/meson/
H A Daxg-card.c30 * Those will be over-written by the CPU side of the link
45 struct axg_dai_link_tdm_data *be = in axg_card_tdm_be_hw_params() local
48 return meson_card_i2s_set_sysclk(substream, params, be->mclk_fs); in axg_card_tdm_be_hw_params()
58 struct axg_dai_link_tdm_data *be = in axg_card_tdm_dai_init() local
65 be->codec_masks[i].tx, in axg_card_tdm_dai_init()
66 be->codec_masks[i].rx, in axg_card_tdm_dai_init()
67 be->slots, be->slot_width); in axg_card_tdm_dai_init()
75 ret = axg_tdm_set_tdm_slots(snd_soc_rtd_to_cpu(rtd, 0), be->tx_mask, be in axg_card_tdm_dai_init()
88 struct axg_dai_link_tdm_data *be = axg_card_tdm_dai_lb_init() local
159 axg_card_parse_cpu_tdm_slots(struct snd_soc_card * card,struct snd_soc_dai_link * link,struct device_node * node,struct axg_dai_link_tdm_data * be) axg_card_parse_cpu_tdm_slots() argument
222 axg_card_parse_codecs_masks(struct snd_soc_card * card,struct snd_soc_dai_link * link,struct device_node * node,struct axg_dai_link_tdm_data * be) axg_card_parse_codecs_masks() argument
251 struct axg_dai_link_tdm_data *be; axg_card_parse_tdm() local
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/linux/Documentation/core-api/
H A Dmemory-allocation.rst15 memory should be allocated. The GFP acronym stands for "get free
27 flags must be used.
33 zones can be used, how hard the allocator should try to find free
34 memory, whether the memory can be accessed by the userspace etc. The
43 direct reclaim may be triggered under memory pressure; the calling
44 context must be allowed to sleep.
52 will be stressed unless allocation succeeds, you may use ``GFP_ATOMIC``.
53 * Untrusted allocations triggered from userspace should be a subject
56 allocations that should be accounted.
62 will be directly accessible by the kernel and implies that the
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/linux/drivers/char/tpm/
H A DKconfig15 say Yes and it will be accessible from within Linux. For
18 userspace enablement piece of the specification, can be
21 will be called tpm. If unsure, say N.
25 2) Without ACPI enabled, the BIOS event log won't be accessible,
69 specification (TPM2.0) say Yes and it will be accessible from
71 the module will be called tpm_tis.
81 specification (TPM2.0) say Yes and it will be accessible from
83 the module will be called tpm_tis_spi.
90 say Yes and it will be accessible from within Linux.
100 say Yes and it will be accessible from within Linux.
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/linux/Documentation/trace/
H A Devents.rst11 Tracepoints (see Documentation/trace/tracepoints.rst) can be used
15 Not all tracepoints can be traced using the event tracing system;
18 tracing information should be printed.
26 The events which are available for tracing can be found in the file
52 file. All of the events in a subsystem can be specified via the syntax
58 The set_event file may also be used to enable events associated to only
64 loaded, the string will be saved and when a module is that matches ``<module>``
67 The text before ``:mod:`` will be parsed to specify specific events that the
131 be used to parse the binary trace stream, and is also the place to
132 find the field names that can be used in event filters (see section 5).
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/linux/Documentation/crypto/
H A Dasymmetric-keys.rst21 The "asymmetric" key type is designed to be a container for the keys used in
27 However, no requirement is made that the key data actually be stored in the
30 A completely in-kernel key retention and operation subtype can be defined, but
31 it would also be possible to provide access to cryptographic hardware (such as
32 a TPM) that might be used to both retain the relevant key and perform
34 merely be an interface to the TPM driver.
39 subtype of the key and define the operations that can be done on that key.
51 should be given from the content of the key.
53 This can then be used to refer to the key, either by complete match or by
72 only keys of the specified subtype (e.g. tpm) will be matched. For
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