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/linux/tools/testing/selftests/intel_pstate/
H A Drun.sh2 # SPDX-License-Identifier: GPL-2.0
4 # This test runs on Intel x86 based hardware which support the intel_pstate
5 # driver. The test checks the frequency settings from the maximum turbo
7 # test runs the aperf.c program to put load on each processor.
27 # and the test will error out in those cases. The result.X file can be checked
29 # files can be re-evaluated by setting EVALUATE_ONLY to 1 below.
33 # Kselftest framework requirement - SKIP code is 4.
36 if ! uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ | grep -q x86; then
37 echo "$0 # Skipped: Test can only run on x86 architectures."
47 if ! command -v cpupower &> /dev/null; then
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/linux/tools/testing/selftests/tc-testing/
H A Dtdc_helper.py2 # SPDX-License-Identifier: GPL-2.0
3 tdc_helper.py - tdc helper functions
9 """ Sort the master test list into categories. """
27 """ Discover all unique test categories present in the test case file. """
35 """ Print IDs and names of all test cases. """
41 """Show all unique categories present in the test cases."""
53 """ Print a list of strings prepended with a tab. """
66 """ Pretty-printing of a given test case. """
/linux/tools/perf/tests/shell/
H A Dtest_arm_callgraph_fp.sh3 # SPDX-License-Identifier: GPL-2.0
9 if [ "$(uname -m)" != "aarch64" ]; then
13 if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
22 TEST_PROGRAM="perf test -w leafloop"
26 rm -f "$PERF_DATA"
32 perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM
35 perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
37 # expected perf-script output if 'leaf' has been inserted correctly:
45 # Each frame is separated by a tab, some spaces and an address
47 perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \
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/linux/lib/reed_solomon/
H A Dtest_rslib.c1 // SPDX-License-Identifier: GPL-2.0
34 __param(int, bc, 1, "Test for correct behaviour beyond error correction capacity");
45 /* List of codes to test */
46 static struct etab Tab[] = { variable
103 kfree(ws->errlocs); in free_ws()
104 kfree(ws->c); in free_ws()
110 int nroots = rs->nroots; in alloc_ws()
112 int nn = rs->nn; in alloc_ws()
118 ws->c = kmalloc_array(2 * (nn + nroots), in alloc_ws()
120 if (!ws->c) in alloc_ws()
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/linux/Documentation/dev-tools/kunit/
H A Dstyle.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Test Style and Nomenclature
17 example, non-deterministically producing false positives or negatives, or
23 To make tests easy to find, they are grouped into suites and subsystems. A test
24 suite is a group of tests which test a related area of the kernel. A subsystem
25 is a set of test suites which test different parts of a kernel subsystem
29 ----------
31 Every test suite must belong to a subsystem. A subsystem is a collection of one
32 or more KUnit test suites which test the same driver or part of the kernel. A
33 test subsystem should match a single kernel module. If the code being tested
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/linux/Documentation/input/devices/
H A Dyealink.rst2 Driver documentation for yealink usb-p1k phones
10 - keyboard full support, yealink.ko / input event API
11 - LCD full support, yealink.ko / sysfs API
12 - LED full support, yealink.ko / sysfs API
13 - dialtone full support, yealink.ko / sysfs API
14 - ringtone full support, yealink.ko / sysfs API
15 - audio playback full support, snd_usb_audio.ko / alsa API
16 - audio record full support, snd_usb_audio.ko / alsa API
27 Physical USB-P1K button layout input events
122 - Excess characters are ignored.
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H A Datarikbd.rst12 provides a convenient connection point for a mouse and switch-type joysticks.
13 The ikbd processor also maintains a time-of-day clock with one second
18 The ikbd communicates with the main processor over a high speed bi-directional
41 0xF8-0xFB relative mouse position records (lsbs determined by
43 0xFC time-of-day
67 ---------------------------
92 +127...-128 range, the motion is broken into multiple packets.
97 ---------------------------
104 ---------------------
120 ------------------------
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/linux/tools/thermal/tmon/
H A Dtmon.82 # SPDX-License-Identifier: GPL-2.0
4 \fBtmon\fP - A monitoring and testing tool for Linux kernel thermal subsystem
13 real-time thermal data; tune
14 and test cooling devices and sensors; collect thermal data for offline
22 - show thermal zone information
23 - show cooling device information
24 - show trip point binding within each thermal zone
25 - show trip point and cooling device instance bindings
28 - show temperature of all thermal zones w.r.t. its trip points and types
29 - show states of all cooling devices
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/linux/net/sched/
H A Dsch_api.c1 // SPDX-License-Identifier: GPL-2.0-or-later
43 -----
420 qdisc_get_rtab(struct tc_ratespec * r,struct nlattr * tab,struct netlink_ext_ack * extack) qdisc_get_rtab() argument
456 qdisc_put_rtab(struct qdisc_rate_table * tab) qdisc_put_rtab() argument
489 u16 *tab = NULL; qdisc_get_stab() local
547 qdisc_put_stab(struct qdisc_size_table * tab) qdisc_put_stab() argument
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/linux/drivers/gpu/drm/amd/pm/swsmu/inc/
H A Damdgpu_smu.h221 SMU_PPT_LIMIT_MIN = -1,
326 ((table)->count > 0 ? (table)->dpm_levels[0].value : 0)
329 ((table)->count > 0 ? (table)->dpm_levels[(table)->count - 1].value : 0)
585 #define SMU_MSG_FLAG_ASYNC BIT(0) /* Async send - skip post-poll */
586 #define SMU_MSG_FLAG_LOCK_HELD BIT(1) /* Caller holds ctl->lock */
594 * struct smu_msg_config - IP-level register configuration
614 * struct smu_msg_args - Per-call message arguments
621 * @timeout: Per-message timeout in us (0 = use default)
634 * struct smu_msg_ops - IP-level protocol operations
648 * struct smu_msg_ctl - Per-device message control block
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/linux/drivers/media/dvb-frontends/
H A Dstb0899_drv.c1 // SPDX-License-Identifier: GPL-2.0-or-later
54 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
56 * -8.0 to -50.0 dBm directly connected,
57 * -52.0 to -74.8 with extra attenuation.
58 * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
59 * Crude linear extrapolation below -84.8dBm and above -8.0dBm.
62 { -750, -128 },
63 { -748, -94 },
64 { -745, -92 },
65 { -735, -90 },
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/linux/drivers/media/pci/cx25821/
H A Dcx25821-reg.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
322 /* PCI-Express Capabilities */
656 #define DMA1_PTR2 0x100080 /* DMA Tab Ptr : Ch#1 */
659 #define DMA2_PTR2 0x100084 /* DMA Tab Ptr : Ch#2 */
662 #define DMA3_PTR2 0x100088 /* DMA Tab Ptr : Ch#3 */
665 #define DMA4_PTR2 0x10008C /* DMA Tab Ptr : Ch#4 */
668 #define DMA5_PTR2 0x100090 /* DMA Tab Ptr : Ch#5 */
671 #define DMA6_PTR2 0x100094 /* DMA Tab Ptr : Ch#6 */
674 #define DMA7_PTR2 0x100098 /* DMA Tab Ptr : Ch#7 */
677 #define DMA8_PTR2 0x10009C /* DMA Tab Ptr : Ch#8 */
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/linux/drivers/tty/
H A Dn_tty.c1 // SPDX-License-Identifier: GPL-1.0+
3 * n_tty.c --- implements the N_TTY line discipline.
19 * Reduced memory usage for older ARM systems - Russell King.
26 * waiting writing processes-Sapan Bhatia <sapan@corewars.org>.
62 * This defines the low- and high-watermarks for throttling and
82 #define ECHO_DISCARD_WATERMARK N_TTY_BUF_SIZE - (ECHO_BLOCK + 32)
85 /* producer-published */
94 /* private to n_tty_receive_overrun (single-threaded) */
98 /* non-atomic */
110 /* consumer-published */
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/linux/tools/testing/selftests/bpf/
H A Djson_writer.c1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
32 for (i = 0; i < self->depth; ++i) in jsonw_indent()
33 fputs(" ", self->out); in jsonw_indent()
39 if (!self->pretty) in jsonw_eol()
42 putc('\n', self->out); in jsonw_eol()
49 if (self->sep != '\0') in jsonw_eor()
50 putc(self->sep, self->out); in jsonw_eor()
51 self->sep = ','; in jsonw_eor()
59 putc('"', self->out); in jsonw_puts()
63 fputs("\\t", self->out); in jsonw_puts()
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H A Dtest_verifier.c1 // SPDX-License-Identifier: GPL-2.0-only
88 /* If specified, test engine looks for this sequence of
90 * test rewrites applied by verifier. Use values
92 * fields if content does not matter. The test case fails if
95 * The sequence could be split into sub-sequences by adding
96 * SKIP_INSNS instruction at the end of each sub-sequence. In
97 * such case sub-sequences are searched for one after another.
100 /* If specified, test engine applies same pattern matching
102 * matched test case is marked as failed.
130 * Can be a tab-separated sequence of expected strings. An empty string
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/linux/tools/bpf/bpftool/
H A Djson_writer.c1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
32 for (i = 0; i < self->depth; ++i) in jsonw_indent()
33 fputs(" ", self->out); in jsonw_indent()
39 if (!self->pretty) in jsonw_eol()
42 putc('\n', self->out); in jsonw_eol()
49 if (self->sep != '\0') in jsonw_eor()
50 putc(self->sep, self->out); in jsonw_eor()
51 self->sep = ','; in jsonw_eor()
59 putc('"', self->out); in jsonw_puts()
63 fputs("\\t", self->out); in jsonw_puts()
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/linux/Documentation/arch/s390/
H A D3270.rst17 Linux/390. A 3270 device is a block-mode rows-and-columns terminal of
21 You may have 3270s in-house and not know it. If you're using the
22 VM-ESA operating system, define a 3270 to your virtual machine by using
23 the command "DEF GRAF <hex-address>" This paper presumes you will be
26 - DEF GRAF 620
27 - DEF GRAF 621
28 - DEF GRAF 622
29 - DEF GRAF 623
31 Your network connection from VM-ESA allows you to use x3270, tn3270, or
34 and this Linux-390 3270 driver, you have another way of talking to your
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/linux/drivers/zorro/
H A Dzorro.ids4 # Maintained by Geert Uytterhoeven <zorro@linux-m68k.org>
12 # product product_name <-- single tab
23 0200 3-State
29 6700 A2386-SX [ISA Bus Bridge]
45 6100 A3000 Test Fixture [Miscellaneous Expansion Card]
46 6700 A2386-SX [ISA Bus Bridge]
61 03ed A-Squared
70 0300 8-Up (Rev A) [RAM Expansion]
71 0400 8-Up (Rev Z) [RAM Expansion]
73 4000 8-Star [RAM Expansion]
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/linux/Documentation/usb/
H A Dgadget_hid.rst21 HID function descriptors you want to use - E.G. something
95 hid_gadget_test is a small interactive program to test the HID
97 device type (keyboard / mouse / joystick) - E.G.::
106 For example type: g i s t r --left-shift
111 Another interesting example is the caps lock test. Type
112 --caps-lock and hit return. A report is then sent by the
116 --caps-lock
123 You can test the mouse emulation. Values are two signed numbers.
148 {.opt = "--left-ctrl", .val = 0x01},
149 {.opt = "--right-ctrl", .val = 0x10},
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/linux/drivers/hid/
H A Dhid-debug.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * (c) 1999 Andreas Gal <gal@cs.uni-magdeburg.de>
4 * (c) 2000-2001 Vojtech Pavlik <vojtech@ucw.cz>
5 * (c) 2007-2009 Jiri Kosina
13 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 #include <linux/hid-debug.h>
2437 { 0x84, 0x0058, "Test" },
2842 /* pages 0xff00 to 0xffff are vendor-specific */
2843 { 0xffff, 0, "Vendor-specific-FF" },
2851 * This is because these functions can be called both for "one-shot"
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/linux/Documentation/filesystems/
H A Dorangefs.rst1 .. SPDX-License-Identifier: GPL-2.0
7 OrangeFS is an LGPL userspace scale-out parallel storage system. It is ideal
51 On Fedora, install orangefs and orangefs-server::
53 dnf -y install orangefs orangefs-server
64 pvfs2-client-core.
68 pvfs2-server -f /etc/orangefs/orangefs.conf
72 systemctl start orangefs-server
74 Test the server::
76 pvfs2-ping -m /pvfsmnt
81 systemctl start orangefs-client
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/linux/drivers/net/ethernet/xscale/
H A Dixp4xx_eth.c1 // SPDX-License-Identifier: GPL-2.0-only
10 * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C)
13 * RX-free queue 26 27 28
14 * TX-done queue is always 31, per-port RX and TX-ready queues are configurable
17 * bits 0 -> 1 - NPE ID (RX and TX-done)
18 * bits 0 -> 2 - priority (TX, per 802.1D)
19 * bits 3 -> 4 - port ID (user-set?)
20 * bits 5 -> 31 - physical descriptor address
24 #include <linux/dma-mapping.h>
72 * FIXME: we have chosen the safe default (14320) but if you can test
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/linux/Documentation/process/
H A Dhowto.rst6 This is the be-all, end-all document on this topic. It contains
18 ------------
27 The kernel is written mostly in C, with some architecture-dependent
30 you plan to do low-level development for that architecture. Though they
34 - "The C Programming Language" by Kernighan and Ritchie [Prentice Hall]
35 - "Practical C Programming" by Steve Oualline [O'Reilly]
36 - "C: A Reference Manual" by Harbison and Steele [Prentice Hall]
60 ------------
65 described in :ref:`Documentation/process/license-rules.rst <kernel_licensing>`.
72 https://www.gnu.org/licenses/gpl-faq.html
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/linux/scripts/mod/
H A Dmodpost.c4 * Copyright 2002-2004 Rusty Russell, IBM Corporation
5 * Copyright 2006-2008 Sam Ravnborg
6 * Based in part on module-init-tools/depmod.c,file2alias
49 /* Trim EXPORT_SYMBOLs that are unused by in-tree modules */
72 * here we use Elf_Addr instead of long for covering cross-compile
75 #define MODULE_NAME_LEN (64 - sizeof(Elf_Addr))
100 return strcmp(str + strlen(str) - strlen(postfix), postfix) == 0; in strends()
104 * get_basename - return the last part of a pathname.
146 nbytes - in read_text_file()
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/linux/scripts/
H A Dcheckpatch.pl2 # SPDX-License-Identifier: GPL-2.0
6 # (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
7 # (c) 2008-2010 Andy Whitcroft <apw@canonical.com>
8 # (c) 2010-2018 Joe Perches <joe@perches.com>
73 my $docsfile = "$D/../Documentation/dev-tools/checkpatch.rst";
76 my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
78 my $git_command ='export LANGUAGE=en_US.UTF-
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