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/linux/Documentation/arch/s390/
H A Ds390dbf.rst2 S390 Debug Feature
6 - arch/s390/kernel/debug.c
7 - arch/s390/include/asm/debug.h
11 The goal of this feature is to provide a kernel debug logging API
13 (e.g. device drivers) can have one separate debug log.
14 One purpose of this is to inspect the debug logs after a production system crash
18 it is possible to look at the debug logs on a live system via the Linux
21 The debug feature may also very useful for kernel and driver development.
25 Kernel components (e.g. device drivers) can register themselves at the debug
28 debug log for the caller. For each debug log exists a number of debug areas
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/linux/Documentation/trace/coresight/
H A Dcoresight-cpu-debug.rst2 Coresight CPU Debug Module
11 Coresight CPU debug module is defined in ARMv8-a architecture reference manual
12 (ARM DDI 0487A.k) Chapter 'Part H: External debug', the CPU can integrate
13 debug module and it is mainly used for two modes: self-hosted debug and
14 external debug. Usually the external debug mode is well known as the external
16 explore debugging method which rely on self-hosted debug mode, this document
19 The debug module provides sample-based profiling extension, which can be used
21 every CPU has one dedicated debug module to be connected. Based on self-hosted
22 debug mechanism, Linux kernel can access these related registers from mmio
36 - At the time this documentation was written, the debug driver mainly relies on
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/linux/arch/powerpc/kernel/ptrace/
H A Dptrace-adv.c13 task->thread.debug.dbcr0 &= ~DBCR0_BT; in user_enable_single_step()
14 task->thread.debug.dbcr0 |= DBCR0_IDM | DBCR0_IC; in user_enable_single_step()
25 task->thread.debug.dbcr0 &= ~DBCR0_IC; in user_enable_block_step()
26 task->thread.debug.dbcr0 = DBCR0_IDM | DBCR0_BT; in user_enable_block_step()
40 * And, after doing so, if all debug flags are off, turn in user_disable_single_step()
43 task->thread.debug.dbcr0 &= ~(DBCR0_IC | DBCR0_BT); in user_disable_single_step()
47 if (!DBCR_ACTIVE_EVENTS(task->thread.debug.dbcr0, in user_disable_single_step()
48 task->thread.debug.dbcr1)) { in user_disable_single_step()
50 * All debug events were off..... in user_disable_single_step()
52 task->thread.debug.dbcr0 &= ~DBCR0_IDM; in user_disable_single_step()
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/linux/Documentation/driver-api/usb/
H A Dusb3-debug-port.rst2 USB3 debug port
11 This is a HOWTO for using the USB3 debug port on x86 systems.
14 debug port, you need to::
16 1) check whether any USB3 debug port is available in
24 The xHCI debug capability (DbC) is an optional but standalone
28 When DbC is initialized and enabled, it will present a debug
29 device through the debug port (normally the first USB3
30 super-speed port). The debug device is fully compliant with
32 performance full-duplex serial link between the debug target
33 (the system under debugging) and a debug host.
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/linux/drivers/media/platform/rockchip/rkisp1/
H A Drkisp1-debug.c196 struct rkisp1_debug *debug = &rkisp1->debug; in rkisp1_debug_init() local
199 debug->debugfs_dir = debugfs_create_dir(dev_name(rkisp1->dev), NULL); in rkisp1_debug_init()
201 debugfs_create_ulong("data_loss", 0444, debug->debugfs_dir, in rkisp1_debug_init()
202 &debug->data_loss); in rkisp1_debug_init()
203 debugfs_create_ulong("outform_size_err", 0444, debug->debugfs_dir, in rkisp1_debug_init()
204 &debug->outform_size_error); in rkisp1_debug_init()
206 debug->debugfs_dir, in rkisp1_debug_init()
207 &debug->img_stabilization_size_error); in rkisp1_debug_init()
208 debugfs_create_ulong("inform_size_error", 0444, debug->debugfs_dir, in rkisp1_debug_init()
209 &debug->inform_size_error); in rkisp1_debug_init()
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/linux/Documentation/devicetree/bindings/arm/
H A Darm,coresight-cpu-debug.yaml4 $id: http://devicetree.org/schemas/arm/arm,coresight-cpu-debug.yaml#
7 title: CoreSight CPU Debug Component
16 CoreSight CPU debug component are compliant with the ARMv8 architecture
17 reference manual (ARM DDI 0487A.k) Chapter 'Part H: External debug'. The
18 external debug module is mainly used for two modes: self-hosted debug and
19 external debug, and it can be accessed from mmio region from Coresight and
20 eventually the debug module connects with CPU for debugging. And the debug
23 has one dedicated debug module to be connected.
29 const: arm,coresight-cpu-debug
39 - const: arm,coresight-cpu-debug
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/linux/Documentation/ABI/testing/
H A Ddebugfs-driver-habanalabs1 What: /sys/kernel/debug/accel/<parent_device>/addr
11 What: /sys/kernel/debug/accel/<parent_device>/clk_gate
17 What: /sys/kernel/debug/accel/<parent_device>/command_buffers
24 What: /sys/kernel/debug/accel/<parent_device>/command_submission
31 What: /sys/kernel/debug/accel/<parent_device>/command_submission_jobs
38 What: /sys/kernel/debug/accel/<parent_device>/data32
53 What: /sys/kernel/debug/accel/<parent_device>/data64
68 What: /sys/kernel/debug/accel/<parent_device>/data_dma
86 What: /sys/kernel/debug/accel/<parent_device>/device
94 What: /sys/kernel/debug/accel/<parent_device>/device_release_watchdog_timeout
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H A Dsysfs-bus-pci-drivers-xhci_hcd6 USB3 controllers) are often implemented with the Debug
7 Capability (DbC). It can present a debug device which
10 serial link for debug purpose.
12 The DbC debug device shares a root port with xHCI host.
14 to the Debug Capability. Otherwise, it will be assigned
32 presented in the USB device descriptor by this xhci debug
34 Value can only be changed while debug capability (DbC) is in
45 presented in the USB device descriptor by this xhci debug
47 Value can only be changed while debug capability (DbC) is in
57 presented in the USB device descriptor by this xhci debug
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H A Ddebugfs-intel-iommu1 What: /sys/kernel/debug/iommu/intel/iommu_regset
11 $ sudo cat /sys/kernel/debug/iommu/intel/iommu_regset
46 What: /sys/kernel/debug/iommu/intel/ir_translation_struct
57 $ sudo cat /sys/kernel/debug/iommu/intel/ir_translation_struct
79 What: /sys/kernel/debug/iommu/intel/dmar_translation_struct
93 $ sudo cat /sys/kernel/debug/iommu/intel/dmar_translation_struct
117 What: /sys/kernel/debug/iommu/intel/invalidation_queue
128 $ sudo cat /sys/kernel/debug/iommu/intel/invalidation_queue
153 What: /sys/kernel/debug/iommu/intel/dmar_perf_latency
161 /sys/kernel/debug/iommu/intel/dmar_perf_latency
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H A Ddebugfs-driver-genwqe1 What: /sys/kernel/debug/genwqe/genwqe<n>_card/ddcb_info
6 What: /sys/kernel/debug/genwqe/genwqe<n>_card/curr_regs
12 What: /sys/kernel/debug/genwqe/genwqe<n>_card/curr_dbg_uid0
18 What: /sys/kernel/debug/genwqe/genwqe<n>_card/curr_dbg_uid1
24 What: /sys/kernel/debug/genwqe/genwqe<n>_card/curr_dbg_uid2
30 What: /sys/kernel/debug/genwqe/genwqe<n>_card/prev_regs
37 What: /sys/kernel/debug/genwqe/genwqe<n>_card/prev_dbg_uid0
43 What: /sys/kernel/debug/genwqe/genwqe<n>_card/prev_dbg_uid1
49 What: /sys/kernel/debug/genwqe/genwqe<n>_card/prev_dbg_uid2
55 What: /sys/kernel/debug/genwqe/genwqe<n>_card/info
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/linux/Documentation/fault-injection/
H A Dfault-injection.rst40 debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request
46 under /sys/kernel/debug/fail_function. No boot option supported.
66 /sys/kernel/debug/fail_skb_realloc/devname.
77 debugfs entries under /sys/kernel/debug/nvme*/fault_inject. The default
99 - /sys/kernel/debug/fail*/probability:
107 /sys/kernel/debug/fail*/interval for such testcases.
109 - /sys/kernel/debug/fail*/interval:
117 - /sys/kernel/debug/fail*/times:
122 - /sys/kernel/debug/fail*/space:
128 - /sys/kernel/debug/fail*/verbose
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/linux/drivers/net/wireless/st/cw1200/
H A Ddebug.h35 ++priv->debug->tx; in cw1200_debug_txed()
40 ++priv->debug->tx_agg; in cw1200_debug_txed_agg()
46 ++priv->debug->tx_multi; in cw1200_debug_txed_multi()
47 priv->debug->tx_multi_frames += count; in cw1200_debug_txed_multi()
52 ++priv->debug->rx; in cw1200_debug_rxed()
57 ++priv->debug->rx_agg; in cw1200_debug_rxed_agg()
62 ++priv->debug->tx_cache_miss; in cw1200_debug_tx_cache_miss()
67 ++priv->debug->tx_align; in cw1200_debug_tx_align()
72 ++priv->debug->tx_ttl; in cw1200_debug_tx_ttl()
77 ++priv->debug->tx_burst; in cw1200_debug_tx_burst()
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/linux/Documentation/devicetree/bindings/soc/socionext/
H A Dsocionext,uniphier-soc-glue-debug.yaml4 $id: http://devicetree.org/schemas/soc/socionext/socionext,uniphier-soc-glue-debug.yaml#
7 title: Socionext UniPhier SoC-glue logic debug part
13 SoC-glue logic debug part implemented on Socionext UniPhier SoCs is
15 system components for debug and monitor use.
21 - socionext,uniphier-ld4-soc-glue-debug
22 - socionext,uniphier-pro4-soc-glue-debug
23 - socionext,uniphier-pro5-soc-glue-debug
24 - socionext,uniphier-pxs2-soc-glue-debug
25 - socionext,uniphier-sld8-soc-glue-debug
26 - socionext,uniphier-ld11-soc-glue-debug
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/linux/drivers/pci/hotplug/
H A Dibmphp_ebda.c114 debug("%s - slot_min = %x\n", __func__, ptr->slot_min); in print_bus_info()
115 debug("%s - slot_max = %x\n", __func__, ptr->slot_max); in print_bus_info()
116 debug("%s - slot_count = %x\n", __func__, ptr->slot_count); in print_bus_info()
117 debug("%s - bus# = %x\n", __func__, ptr->busno); in print_bus_info()
118 debug("%s - current_speed = %x\n", __func__, ptr->current_speed); in print_bus_info()
119 debug("%s - controller_id = %x\n", __func__, ptr->controller_id); in print_bus_info()
121 debug("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv); in print_bus_info()
122 debug("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv); in print_bus_info()
123 debug("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix); in print_bus_info()
124 debug("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix); in print_bus_info()
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H A Dibmphp_core.c39 static bool debug; variable
40 module_param(debug, bool, S_IRUGO | S_IWUSR);
41 MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
58 debug("options = %x\n", slot_cur->ctrl->options); in get_cur_bus_info()
59 debug("revision = %x\n", slot_cur->ctrl->revision); in get_cur_bus_info()
74 debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n", in get_cur_bus_info()
140 debug("(*cur_slot)->irq[0] = %x\n", in ibmphp_init_devno()
142 debug("(*cur_slot)->irq[1] = %x\n", in ibmphp_init_devno()
144 debug("(*cur_slot)->irq[2] = %x\n", in ibmphp_init_devno()
146 debug("(*cur_slot)->irq[3] = %x\n", in ibmphp_init_devno()
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/linux/Documentation/admin-guide/
H A Dbtmrvl.rst10 Path: /debug/btmrvl/config/
27 echo 0xff80 > /debug/btmrvl/config/gpiogap
28 echo 1 > /debug/btmrvl/config/hscfgcmd
31 echo 0x03ff > /debug/btmrvl/config/gpiogap
32 echo 1 > /debug/btmrvl/config/hscfgcmd
45 echo 1 > /debug/btmrvl/config/psmode
46 echo 1 > /debug/btmrvl/config/pscmd
49 echo 0 > /debug/btmrvl/config/psmode
50 echo 1 > /debug/btmrvl/config/pscmd
64 echo 1 > /debug/btmrvl/config/hsmode
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/linux/fs/orangefs/
H A Dorangefs-debugfs.c3 * What: /sys/kernel/debug/orangefs/debug-help
7 * List of client and kernel debug keywords.
10 * What: /sys/kernel/debug/orangefs/client-debug
14 * Debug setting for "the client", the userspace
18 * What: /sys/kernel/debug/orangefs/kernel-debug
22 * Debug setting for the orangefs kernel module.
25 * of keywords, from debug-help can be catted to
26 * client-debug or kernel-debug.
29 * for client-debug. Setting client-debug to "all"
35 * "none" and "all" are similar settings for kernel-debug
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/linux/Documentation/translations/zh_CN/dev-tools/
H A Dkmemleak.rst13 被释放，而是仅通过 /sys/kernel/debug/kmemleak 报告。Valgrind 工具
24 # mount -t debugfs nodev /sys/kernel/debug/
28 # cat /sys/kernel/debug/kmemleak
32 # echo scan > /sys/kernel/debug/kmemleak
36 # echo clear > /sys/kernel/debug/kmemleak
38 当再次读取 ``/sys/kernel/debug/kmemleak`` 文件时，将会输出自上次扫描以来检测到的
44 可以通过写入 ``/sys/kernel/debug/kmemleak`` 文件在运行时修改内存扫描参数。下面是
98 4. 剩余的白色对象就被认为是孤立的并通过 /sys/kernel/debug/kmemleak 报告。
107 在初始化启动阶段 /sys/kernel/debug/kmemleak 的输出可能会很多，这也可能是你在开发
109 /sys/kernel/debug/kmemleak 输出的所有的未引用对象。在执行 'clear' 后执行 'scan'
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/linux/drivers/net/wireless/ath/ath10k/
H A Ddebug.c17 #include "debug.h"
55 ath10k_info(ar, "kconfig debug %d debugfs %d tracing %d dfs %d testmode %d\n", in ath10k_debug_print_hwfw_info()
247 ar->debug.fw_stats_done = false; in ath10k_debug_fw_stats_reset()
248 ar->debug.fw_stats.extended = false; in ath10k_debug_fw_stats_reset()
249 ath10k_fw_stats_pdevs_free(&ar->debug.fw_stats.pdevs); in ath10k_debug_fw_stats_reset()
250 ath10k_fw_stats_vdevs_free(&ar->debug.fw_stats.vdevs); in ath10k_debug_fw_stats_reset()
251 ath10k_fw_stats_peers_free(&ar->debug.fw_stats.peers); in ath10k_debug_fw_stats_reset()
252 ath10k_fw_extd_stats_peers_free(&ar->debug.fw_stats.peers_extd); in ath10k_debug_fw_stats_reset()
290 if (ar->debug.fw_stats_done) { in ath10k_debug_fw_stats_process()
297 num_peers = list_count_nodes(&ar->debug.fw_stats.peers); in ath10k_debug_fw_stats_process()
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/linux/Documentation/arch/x86/
H A Dearlyprintk.rst8 USB2 Debug port key and a debug cable, on x86 systems.
10 You need two computers, the 'USB debug key' special gadget and
13 [host/target] <-------> [USB debug key] <-------> [client/console]
18 a) Host/target system needs to have USB debug port capability.
20 You can check this capability by looking at a 'Debug port' bit in
35 Capabilities: [58] Debug port: BAR=1 offset=00a0
42 If your system does not list a debug port capability then you probably
43 won't be able to use the USB debug key.
45 b) You also need a NetChip USB debug cable/key:
55 debug port on the "host/target" system. You cannot use a USB hub in
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/linux/include/dt-bindings/pinctrl/
H A Dk210-fpioa.h238 #define K210_PCF_DEBUG0 224 /* Debug function 0 */
239 #define K210_PCF_DEBUG1 225 /* Debug function 1 */
240 #define K210_PCF_DEBUG2 226 /* Debug function 2 */
241 #define K210_PCF_DEBUG3 227 /* Debug function 3 */
242 #define K210_PCF_DEBUG4 228 /* Debug function 4 */
243 #define K210_PCF_DEBUG5 229 /* Debug function 5 */
244 #define K210_PCF_DEBUG6 230 /* Debug function 6 */
245 #define K210_PCF_DEBUG7 231 /* Debug function 7 */
246 #define K210_PCF_DEBUG8 232 /* Debug function 8 */
247 #define K210_PCF_DEBUG9 233 /* Debug function 9 */
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/linux/drivers/scsi/mpt3sas/
H A Dmpt3sas_debugfs.c44 struct mpt3sas_debugfs_buffer *debug = filp->private_data; in _debugfs_iocdump_read() local
46 if (!debug || !debug->buf) in _debugfs_iocdump_read()
49 return simple_read_from_buffer(ubuf, cnt, ppos, debug->buf, debug->len); in _debugfs_iocdump_read()
59 struct mpt3sas_debugfs_buffer *debug; in _debugfs_iocdump_open() local
61 debug = kzalloc(sizeof(struct mpt3sas_debugfs_buffer), GFP_KERNEL); in _debugfs_iocdump_open()
62 if (!debug) in _debugfs_iocdump_open()
65 debug->buf = (void *)ioc; in _debugfs_iocdump_open()
66 debug->len = sizeof(struct MPT3SAS_ADAPTER); in _debugfs_iocdump_open()
67 file->private_data = debug; in _debugfs_iocdump_open()
79 struct mpt3sas_debugfs_buffer *debug = file->private_data; in _debugfs_iocdump_release() local
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/linux/drivers/net/wireless/ath/ath9k/
H A Dhtc_drv_debug.c202 priv->debug.tx_stats.buf_queued); in read_file_xmit()
205 priv->debug.tx_stats.buf_completed); in read_file_xmit()
208 priv->debug.tx_stats.skb_queued); in read_file_xmit()
211 priv->debug.tx_stats.skb_success); in read_file_xmit()
214 priv->debug.tx_stats.skb_failed); in read_file_xmit()
217 priv->debug.tx_stats.cab_queued); in read_file_xmit()
221 priv->debug.tx_stats.queue_stats[IEEE80211_AC_BE]); in read_file_xmit()
224 priv->debug.tx_stats.queue_stats[IEEE80211_AC_BK]); in read_file_xmit()
227 priv->debug.tx_stats.queue_stats[IEEE80211_AC_VI]); in read_file_xmit()
230 priv->debug.tx_stats.queue_stats[IEEE80211_AC_VO]); in read_file_xmit()
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/linux/drivers/net/fddi/skfp/
H A Dsmtinit.c24 /* define global debug variable */
25 #if defined(DEBUG) && !defined(DEBUG_BRD)
26 struct smt_debug debug; variable
65 #if defined(DEBUG) && !defined(DEBUG_BRD) in init_smt()
66 debug.d_smt = 0 ; in init_smt()
67 debug.d_smtf = 0 ; in init_smt()
68 debug.d_rmt = 0 ; in init_smt()
69 debug.d_ecm = 0 ; in init_smt()
70 debug.d_pcm = 0 ; in init_smt()
71 debug.d_cfm = 0 ; in init_smt()
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/linux/drivers/crypto/hisilicon/
H A Ddebugfs.c136 struct qm_debug *debug = file->debug; in file_to_qm() local
138 return container_of(debug, struct hisi_qm, debug); in file_to_qm()
338 memset(sqe + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK, in qm_sq_dump()
339 qm->debug.sqe_mask_len); in qm_sq_dump()
633 if (val >= qm->debug.curr_qm_qp_num) in current_q_write()
697 qm->debug.curr_qm_qp_num = qm->qp_num; in current_qm_write()
699 qm->debug.curr_qm_qp_num = qm_get_vf_qp_num(qm, val); in current_qm_write()
879 qm->debug.qm_diff_regs = dfx_regs_init(qm, qm_diff_regs, ARRAY_SIZE(qm_diff_regs)); in qm_diff_regs_init()
880 if (IS_ERR(qm->debug.qm_diff_regs)) { in qm_diff_regs_init()
881 ret = PTR_ERR(qm->debug.qm_diff_regs); in qm_diff_regs_init()
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