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John Ogness f9f3f02db9 printk: introduce a kmsg_dump iterator 
Rather than storing the iterator information in the registered
kmsg_dumper structure, create a separate iterator structure. The
kmsg_dump_iter structure can reside on the stack of the caller, thus
allowing lockless use of the kmsg_dump functions.

Update code that accesses the kernel logs using the kmsg_dumper
structure to use the new kmsg_dump_iter structure. For kmsg_dumpers,
this also means adding a call to kmsg_dump_rewind() to initialize
the iterator.

All this is in preparation for removal of @logbuf_lock.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org> # pstore
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210303101528.29901-13-john.ogness@linutronix.de
2021-03-08 11:43:27 +01:00
..
accessibility tty: rename tty_kopen() and add new function tty_kopen_shared() 2020-12-28 16:09:11 +01:00
acpi - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
amba
android Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
ata ata: Avoid comma separated statements 2021-01-31 08:05:46 -07:00
atm atm: idt77252: fix build broken on amd64 2021-02-15 12:36:27 -08:00
auxdisplay auxdisplay: Fix duplicate CHARLCD config symbol 2021-01-25 22:14:19 +01:00
base Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
bcma
block xen: branch for v5.12-rc1 2021-02-21 13:06:08 -08:00
bluetooth TTY/Serial driver changes for 5.12-rc1 2021-02-20 21:28:04 -08:00
bus ARM: SoC drivers for v5.12 2021-02-20 18:42:28 -08:00
cdrom block: remove unnecessary argument from blk_execute_rq 2021-01-24 21:52:39 -07:00
char Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
clk This is all driver updates, the majority of which is a bunch of new Qualcomm 2021-02-22 09:45:23 -08:00
clocksource hyperv-next for 5.12 2021-02-21 13:24:39 -08:00
connector net/connector: Add const qualifier to cb_id 2020-12-16 11:06:49 -08:00
counter counter:ti-eqep: remove floor 2021-01-14 20:56:56 +00:00
cpufreq Merge branch 'pm-opp' into pm 2021-02-15 17:01:46 +01:00
cpuidle ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
dax libnvdimm for 5.11 2020-12-24 12:18:11 -08:00
dca
devfreq Merge branches 'pm-devfreq' and 'pm-tools' 2021-02-15 17:02:04 +01:00
dio
dma dmaengine dw: Revert "dmaengine: dw: Enable runtime PM" 2021-02-08 17:36:12 +05:30
dma-buf dma-buf: Avoid comma separated statements 2021-02-09 17:14:11 +01:00
edac Merge branch 'edac-misc' into edac-updates-for-v5.12 2021-02-15 10:06:58 +01:00
eisa
extcon extcon: max77693: Fix modalias string 2020-12-11 17:18:10 +09:00
firewire
firmware MMC core: 2021-02-22 09:05:28 -08:00
fpga Merge 5.10-rc7 into char-misc-next 2020-12-07 10:08:14 +01:00
fsi hwmon patches for v5.11 2020-12-15 16:06:14 -08:00
gnss
gpio gpio updates for v5.12 2021-02-22 10:00:46 -08:00
gpu platform-drivers-x86 for v5.12-1 2021-02-22 08:50:01 -08:00
greybus
hid Staging/IIO driver patches for 5.12-rc1 2021-02-20 21:36:51 -08:00
hsi HSI: Fix PM usage counter unbalance in ssi_hw_init 2020-12-29 23:57:06 +01:00
hv printk: introduce a kmsg_dump iterator 2021-03-08 11:43:27 +01:00
hwmon Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
hwspinlock hwspinlock: sirf: Remove the redundant 'of_match_ptr' 2020-12-10 13:34:40 -06:00
hwtracing intel_th: pci: Add Alder Lake-P support 2021-01-21 18:54:43 +01:00
i2c Merge branch 'i2c/for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2021-02-22 09:02:24 -08:00
i3c I3C for 5.12 2021-02-22 09:52:55 -08:00
ide block: remove unnecessary argument from blk_execute_rq 2021-01-24 21:52:39 -07:00
idle intel_idle: remove definition of DEBUG 2021-01-22 16:46:16 +01:00
iio - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
infiniband Linux 5.11 2021-02-18 11:19:29 -04:00
input sound updates for 5.12 2021-02-21 14:21:35 -08:00
interconnect interconnect: imx8mq: Use icc_sync_state 2020-12-28 14:03:02 +02:00
iommu IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
ipack
irqchip irqchip updates for Linux 5.12: 2021-02-15 15:41:56 +01:00
isdn misdn: dsp: select CONFIG_BITREVERSE 2021-01-05 15:50:36 -08:00
leds TTY/Serial driver changes for 5.12-rc1 2021-02-20 21:28:04 -08:00
lightnvm lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid() 2021-02-14 21:27:24 -07:00
macintosh macintosh/adb-iop: Use big-endian autopoll mask 2021-01-25 13:23:38 +01:00
mailbox mailbox: arm_mhuv2: Add driver 2020-12-09 19:26:02 -06:00
mcb
md - Fix DM integrity's HMAC support to provide enhanced security of 2021-02-22 10:22:54 -08:00
media Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
memory IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
memstick memstick: r592: Fix error return in r592_probe() 2020-12-04 12:27:10 +01:00
message scsi: message: fusion: Fix 'physical' typos 2021-01-26 23:25:16 -05:00
mfd - Core Frameworks 2021-02-22 09:29:42 -08:00
misc - HDCP 2.2 and HDCP 1.4 Gen12 DP MST support (Anshuman) 2021-01-29 17:05:15 +10:00
mmc MMC core: 2021-02-22 09:05:28 -08:00
most
mtd printk: introduce a kmsg_dump iterator 2021-03-08 11:43:27 +01:00
mux
net RDMA 5.12 merge window pull request 2021-02-22 10:27:48 -08:00
nfc nfc: st-nci: Remove unnecessary variable 2021-02-08 14:56:20 -08:00
ntb Big fix for IDT NTB and Intel NTB LTR management support 2020-12-27 09:22:55 -08:00
nubus
nvdimm for-5.12/block-2021-02-17 2021-02-21 11:02:48 -08:00
nvme for-5.12/drivers-2021-02-17 2021-02-21 11:06:54 -08:00
nvmem
of Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
opp OPP: Add function to look up required OPP's for a given OPP 2021-02-04 16:30:14 +05:30
parisc
parport parport: fix a kernel-doc markup 2021-01-21 14:06:00 -07:00
pci drm pull for 5.12-rc1 2021-02-21 14:44:44 -08:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2020-12-19 12:50:10 -08:00
perf IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
phy phy: mediatek: allow compile-testing the dsi phy 2021-01-04 13:00:54 +05:30
pinctrl gpio: visconti: Add Toshiba Visconti GPIO support 2021-02-15 11:43:26 +01:00
platform - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
pnp PNP: pnpbios: Use DEFINE_SPINLOCK() for spinlock 2021-01-22 16:22:57 +01:00
power power-supply: use kobj_to_dev() 2021-01-28 01:31:42 +01:00
powercap powercap: intel_rapl: Use topology interface in rapl_init_domains() 2021-02-12 16:53:01 +01:00
pps
ps3 powerpc/ps3: use dma_mapping_error() 2020-12-15 22:50:12 +11:00
ptp ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary 2021-02-17 13:49:26 -08:00
pwm pwm: Changes for v5.11-rc1 2020-12-19 11:51:32 -08:00
rapidio rapidio: fix kernel-doc a markup 2021-01-21 14:06:00 -07:00
ras
regulator - Core Frameworks 2021-02-22 09:29:42 -08:00
remoteproc ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
reset ARM: SoC drivers for v5.12 2021-02-20 18:42:28 -08:00
rpmsg
rtc RTC for 5.12 2021-02-22 09:54:19 -08:00
s390 SCSI misc on 20210219 2021-02-22 10:24:58 -08:00
sbus
scsi SCSI misc on 20210219 2021-02-22 10:24:58 -08:00
sfi
sh sh/intc: Restore devm_ioremap() alignment 2021-01-06 19:55:29 -05:00
siox siox: Make remove callback return void 2020-12-10 16:17:15 +01:00
slimbus slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() 2020-12-10 16:23:56 +01:00
soc This is all driver updates, the majority of which is a bunch of new Qualcomm 2021-02-22 09:45:23 -08:00
soundwire soundwire: intel: fix another unused-function warning 2020-12-05 13:11:54 +05:30
spi spi: Updates for v5.12 2021-02-22 09:19:08 -08:00
spmi spmi: Add driver shutdown support 2020-12-10 10:45:36 +01:00
ssb
staging media updates for v5.12-rc1 2021-02-21 14:10:36 -08:00
target SCSI misc on 20210219 2021-02-22 10:24:58 -08:00
tc
tee Simplify i2c acess in OP-TEE driver 2021-02-09 16:10:49 +01:00
thermal - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
thunderbolt thunderbolt: Changes for v5.12 merge window 2021-02-09 13:00:07 +01:00
tty Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
uio uio: uio_hv_generic: use devm_kzalloc() for private data alloc 2020-12-09 19:59:00 +01:00
usb Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
vdpa vdpa/mlx5: Restore the hardware used index after change map 2021-02-05 10:28:04 -05:00
vfio ARM: 2020-12-20 10:44:05 -08:00
vhost vhost_net: avoid tx queue stuck when sendmsg fails 2021-01-19 11:13:30 -08:00
video - New Functionality 2021-02-22 09:27:18 -08:00
virt
virtio virtio,vdpa: features, cleanups, fixes 2020-12-24 12:06:46 -08:00
visorbus
vlynq
vme vme: switch from 'pci_' to 'dma_' API 2020-12-09 19:44:34 +01:00
w1
watchdog linux-watchdog 5.12-rc1 tag 2021-02-22 09:07:51 -08:00
xen xen: branch for v5.12-rc1 2021-02-21 13:06:08 -08:00
zorro
Kconfig
Makefile asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00