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/linux/io_uring/
H A Dnet.c160 static void io_netmsg_iovec_free(struct io_async_msghdr *kmsg) in io_netmsg_iovec_free() argument
162 if (kmsg->vec.iovec) in io_netmsg_iovec_free()
163 io_vec_free(&kmsg->vec); in io_netmsg_iovec_free()
201 struct io_async_msghdr *kmsg) in io_mshot_prep_retry() argument
352 struct io_async_msghdr *kmsg = req->async_data; in io_send_setup() local
362 kmsg->msg.msg_name = NULL; in io_send_setup()
363 kmsg->msg.msg_namelen = 0; in io_send_setup()
364 kmsg->msg.msg_control = NULL; in io_send_setup()
365 kmsg->msg.msg_controllen = 0; in io_send_setup()
366 kmsg->msg.msg_ubuf = NULL; in io_send_setup()
[all …]
/linux/net/
H A Dcompat.c36 int __get_compat_msghdr(struct msghdr *kmsg, in __get_compat_msghdr() argument
42 kmsg->msg_flags = msg->msg_flags; in __get_compat_msghdr()
43 kmsg->msg_namelen = msg->msg_namelen; in __get_compat_msghdr()
46 kmsg->msg_namelen = 0; in __get_compat_msghdr()
48 if (kmsg->msg_namelen < 0) in __get_compat_msghdr()
51 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) in __get_compat_msghdr()
52 kmsg->msg_namelen = sizeof(struct sockaddr_storage); in __get_compat_msghdr()
54 kmsg->msg_control_is_user = true; in __get_compat_msghdr()
55 kmsg->msg_get_inq = 0; in __get_compat_msghdr()
56 kmsg in __get_compat_msghdr()
83 get_compat_msghdr(struct msghdr * kmsg,struct compat_msghdr __user * umsg,struct sockaddr __user ** save_addr,struct iovec ** iov) get_compat_msghdr() argument
139 cmsghdr_from_user_compat_to_kern(struct msghdr * kmsg,struct sock * sk,unsigned char * stackbuf,int stackbuf_size) cmsghdr_from_user_compat_to_kern() argument
227 put_cmsg_compat(struct msghdr * kmsg,int level,int type,int len,void * data) put_cmsg_compat() argument
[all...]
H A Dsocket.c2468 int __copy_msghdr(struct msghdr *kmsg, in __copy_msghdr() argument
2474 kmsg->msg_control_is_user = true; in __copy_msghdr()
2475 kmsg->msg_get_inq = 0; in __copy_msghdr()
2476 kmsg->msg_control_user = msg->msg_control; in __copy_msghdr()
2477 kmsg->msg_controllen = msg->msg_controllen; in __copy_msghdr()
2478 kmsg->msg_flags = msg->msg_flags; in __copy_msghdr()
2480 kmsg->msg_namelen = msg->msg_namelen; in __copy_msghdr()
2482 kmsg->msg_namelen = 0; in __copy_msghdr()
2484 if (kmsg->msg_namelen < 0) in __copy_msghdr()
2487 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) in __copy_msghdr()
[all …]
/linux/tools/testing/selftests/livepatch/
H A Dtest-livepatch.sh60 grep 'live patched' /proc/cmdline > /dev/kmsg
61 grep 'live patched' /proc/meminfo > /dev/kmsg
65 grep 'live patched' /proc/cmdline > /dev/kmsg
66 grep 'live patched' /proc/meminfo > /dev/kmsg
71 grep 'live patched' /proc/cmdline > /dev/kmsg
72 grep 'live patched' /proc/meminfo > /dev/kmsg
77 grep 'live patched' /proc/cmdline > /dev/kmsg
78 grep 'live patched' /proc/meminfo > /dev/kmsg
124 grep 'live patched' /proc/cmdline > /dev/kmsg
125 grep 'live patched' /proc/meminfo > /dev/kmsg
[all …]
H A Dfunctions.sh25 echo "$1" > /dev/kmsg
117 echo "livepatch: $err" | sed 's#/proc/sys/kernel/#kernel.#' > /dev/kmsg
124 echo "livepatch: kernel.ftrace_enabled = $result" > /dev/kmsg
/linux/drivers/gpu/drm/
H A Ddrm_panic.c45 "Choose what will be displayed by drm_panic, 'user' or 'kmsg' [default="
518 * Draw one line of kmsg, and handle wrapping if it won't fit in the screen width.
551 * Draw the kmsg buffer to the screen, starting from the youngest message at the bottom,
603 * 1) kmsg messages are dumped in buffer1
604 * 2) kmsg is zlib-compressed into buffer2
605 * 3) compressed kmsg is encoded as QR-code Numeric stream in buffer1
610 * Typically, ~7500 bytes of kmsg, are compressed into 2800 bytes, which fits in
613 * If CONFIG_DRM_PANIC_SCREEN_QR_CODE_URL is not set, the kmsg data will be put
615 * 1) kmsg messages are dumped in buffer1
616 * 2) kmsg message is encoded as byte stream in buffer2
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H A DKconfig95 the user to reboot the system, or "kmsg" which will display the last
96 lines of kmsg.
107 code. The QR code will contain the last lines of kmsg and other debug
117 the QR code will contain the URL and the kmsg compressed with zlib as
118 a URL parameter. If it's empty, the QR code will contain the kmsg as
120 There is a demo code in javascript, to decode and uncompress the kmsg
/linux/Documentation/ABI/testing/
H A Ddev-kmsg1 What: /dev/kmsg
5 Description: The /dev/kmsg character device node provides userspace access
116 the console, /proc/kmsg or the syslog() syscall.
121 disabled and /dev/kmsg output will contain more fragments. If
124 may be removed entirely and /dev/kmsg users are recommended to
/linux/tools/testing/selftests/drivers/net/
H A Dnetpoll_basic.py56 # Number of writes to /dev/kmsg per iteration
309 with open("/dev/kmsg", "w", encoding="utf-8") as kmsg:
312 kmsg.write(f"{msg}-{j}\n")
314 # in some cases, kmsg can be busy, so, we will retry
318 logging.info("Failed to write to kmsg. Retrying")
322 f"Failed to write to kmsg: {exception}"
H A Dnetcons_fragmented_msg.sh24 # The content of kmsg will be save to the following file
105 echo "${MSG}: ${TARGET}" > /dev/kmsg
119 echo "${MSG}: ${TARGET}" > /dev/kmsg
H A Dnetcons_cmdline.sh39 # The content of kmsg will be save to the following file
51 echo "${MSG}: ${TARGET}" > /dev/kmsg
H A Dnetcons_basic.sh26 # The content of kmsg will be save to the following file
59 echo "${MSG}: ${TARGET}" > /dev/kmsg
H A Dnetcons_torture.sh51 echo "netconsole selftest: ${COUNT} additional targets were created" > /dev/kmsg
110 echo "${MSG}: ${TARGET} ${i}" > /dev/kmsg
/linux/Documentation/devicetree/bindings/reserved-memory/
H A Dramoops.yaml46 description: maximum size in bytes of each kmsg dump
81 If present, sets maximum type of kmsg dump reasons to store.
82 This can be set to INT_MAX to store all kmsg dumps.
83 See include/linux/kmsg_dump.h KMSG_DUMP_* for other kmsg dump reason values.
/linux/tools/testing/selftests/devices/error_logs/
H A Dtest_device_error_logs.py25 kmsg = "/dev/kmsg" variable
41 with open(kmsg) as f:
/linux/fs/pstore/
H A DKconfig135 int "Size in Kbytes of kmsg dump log to store"
139 This just sets size of kmsg dump (oops, panic, etc) log for
146 int "Maximum kmsg dump reason to store"
150 The maximum reason for kmsg dumps to store. The default is
H A Dzone.c42 * struct psz_kmsg_header - kmsg dump-specific header to flush to storage
44 * @magic: magic num for kmsg dump header
45 * @time: kmsg dump trigger time
47 * @counter: kmsg dump counter
48 * @reason: the kmsg dump reason (e.g. oops, panic, etc)
51 * This is a sub-header for a kmsg dump, trailing after &psz_buffer.
92 * @kpszs: kmsg dump storage zones
97 * @kmsg_read_cnt: counter of total read kmsg dumps
98 * @kmsg_write_cnt: counter of total kmsg dump writes
407 pr_debug("no valid data in kmsg dump zone %lu\n", i); in psz_kmsg_recover_meta()
[all …]
/linux/Documentation/networking/
H A Dnetconsole.rst199 echo "This is a message" > /dev/kmsg
223 echo "This is a message" > /dev/kmsg
265 echo "This is a message" > /dev/kmsg
286 echo "This is a message" > /dev/kmsg
317 echo "This is a message" > /dev/kmsg
364 echo "This is message #1" > /dev/kmsg
365 echo "This is message #2" > /dev/kmsg
382 following format which is the same as /dev/kmsg::
/linux/include/linux/
H A Dpstore_blk.h31 * @max_reason: Maximum kmsg dump reason to store to block device
32 * @kmsg_size: Total size of for kmsg dumps
/linux/fs/proc/
H A Dkmsg.c3 * linux/fs/proc/kmsg.c
60 proc_create("kmsg", S_IRUSR, NULL, &kmsg_proc_ops); in proc_kmsg_init()
H A DMakefile34 proc-$(CONFIG_PRINTK) += kmsg.o
/linux/drivers/hv/
H A Dhv_common.c118 * sysctl option to allow the user to control whether kmsg data should be
147 * kmsg dumper is used [see hv_kmsg_dump()], which provides more
173 * be calling hv_kmsg_dump() later with kmsg data, don't do the in hv_die_panic_notify_crash()
183 * Callback from kmsg_dump. Grab as much as possible from the end of the kmsg
252 pr_err("Hyper-V: kmsg dump register error 0x%x\n", ret); in hv_kmsg_dump_register()
329 * Hyper-V expects to get crash register data or kmsg when in hv_common_init()
353 * Register for panic kmsg callback only if the right in hv_common_init()
/linux/tools/testing/selftests/
H A Drun_kselftest.sh118 [ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg
/linux/tools/testing/selftests/wireguard/qemu/
H A Dinit.c134 file = fopen("/proc/kmsg", "r"); in kmod_selftests()
136 panic("fopen(kmsg)"); in kmod_selftests()
138 panic("fcntl(kmsg, nonblock)"); in kmod_selftests()
/linux/arch/powerpc/platforms/powernv/
H A Dopal-kmsg.c3 * kmsg dumper that ensures the OPAL console fully flushes panic messages

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