Boris Burkov ef45fe470e blk-cgroup: show global disk stats in root cgroup io.stat ... In order to improve consistency and usability in cgroup stat accounting, we would like to support the root cgroup's io.stat. Since the root cgroup has processes doing io even if the system has no explicitly created cgroups, we need to be careful to avoid overhead in that case. For that reason, the rstat algorithms don't handle the root cgroup, so just turning the file on wouldn't give correct statistics. To get around this, we simulate flushing the iostat struct by filling it out directly from global disk stats. The result is a root cgroup io.stat file consistent with both /proc/diskstats and io.stat. Note that in order to collect the disk stats, we needed to iterate over devices. To facilitate that, we had to change the linkage of a disk_type to external so that it can be used from blk-cgroup.c to iterate over disks. Suggested-by: Tejun Heo <tj@kernel.org> Signed-off-by: Boris Burkov <boris@bur.io> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-07-17 20:18:00 -06:00
..
ABI	powerpc/papr_scm: Fetch nvdimm health information from PHYP	2020-06-15 18:22:43 -07:00
accounting
admin-guide	blk-cgroup: show global disk stats in root cgroup io.stat	2020-07-17 20:18:00 -06:00
arm
arm64	docs/arm64: Fix typo'd #define in sve.rst	2020-06-15 13:17:43 +01:00
block	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
bpf	docs/bpf: Add BPF ring buffer design notes	2020-06-01 14:38:22 -07:00
cdrom	cdrom: remove the unused cdrom_media_changed function	2020-07-08 16:20:01 -06:00
core-api	A handful of late-arriving docs fixes, along with a patch changing a lot of	2020-06-10 14:12:15 -07:00
cpu-freq
crypto
dev-tools	kcsan: Update Documentation to change supported compilers	2020-06-11 20:04:02 +02:00
devicetree	Merge branch 'i2c/for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2020-06-13 13:12:38 -07:00
doc-guide	A handful of late-arriving docs fixes, along with a patch changing a lot of	2020-06-10 14:12:15 -07:00
driver-api	Documentation: media: convert to use i2c_new_client_device()	2020-06-19 09:20:25 +02:00
fault-injection	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
fb	media updates for v5.8-rc1	2020-06-03 20:59:38 -07:00
features	mm/debug: add tests validating architecture page table helpers	2020-06-04 19:06:21 -07:00
filesystems	md: switch to ->check_events for media change notifications	2020-07-08 16:19:47 -06:00
firmware_class
firmware-guide
fpga
gpu	drm/amdgpu: fix documentation around busy_percentage	2020-06-17 17:42:43 -04:00
hid
hwmon	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-06-03 16:27:18 -07:00
i2c	Documentation/i2c: SMBus start signal is S not A	2020-06-19 09:21:48 +02:00
ia64
ide
iio
infiniband	RDMA/core: Remove FMR device ops	2020-06-02 20:32:54 -03:00
input
isdn
kbuild	kbuild: doc: rename LDFLAGS to KBUILD_LDFLAGS	2020-06-06 23:39:20 +09:00
kernel-hacking
leds
livepatch
locking	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
m68k
maintainer	Documentation: fixes to the maintainer-entry-profile template	2020-06-01 09:36:07 -06:00
mhi
mips
misc-devices	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
netlabel
networking	docs: networkng: convert sja1105's devlink info to RTS	2020-06-10 17:07:04 -07:00
nios2
nvdimm	nvdimm: fixes to maintainter-entry-profile	2020-05-25 10:19:19 -06:00
openrisc
parisc
PCI	pci-v5.8-changes	2020-06-06 11:01:58 -07:00
pcmcia
power	Power management updates for 5.8-rc1	2020-06-02 13:17:23 -07:00
powerpc	powerpc: Document details on H_SCM_HEALTH hcall	2020-06-15 18:22:43 -07:00
process	Merge branch 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux	2020-06-10 14:46:54 -07:00
RCU
riscv
s390	s390 updates for the 5.8 merge window	2020-06-08 12:05:31 -07:00
scheduler
scsi
security	Notifications over pipes + Keyring notifications	2020-06-13 09:56:21 -07:00
sh	Documentation: remove SH-5 index entries	2020-06-16 17:39:43 -07:00
sound
sparc
sphinx	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
sphinx-static
spi
target	doc: don't use deprecated "---help---" markers in target docs	2020-06-13 13:32:40 -07:00
timers
trace	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
translations	A handful of late-arriving docs fixes, along with a patch changing a lot of	2020-06-10 14:12:15 -07:00
usb	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
userspace-api	Documentation: media: convert to use i2c_new_client_device()	2020-06-19 09:20:25 +02:00
virt	ARM:	2020-06-03 15:13:47 -07:00
vm	A handful of late-arriving docs fixes, along with a patch changing a lot of	2020-06-10 14:12:15 -07:00
w1
watchdog	watchdog: clarify that stop() is optional	2020-05-25 08:55:42 +02:00
x86	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
xtensa
.gitignore
asm-annotations.rst
atomic_bitops.txt
atomic_t.txt
bus-virt-phys-mapping.txt
Changes
CodingStyle
conf.py	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
COPYING-logo	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
crc32.txt
docutils.conf
dontdiff	modpost: generate vmlinux.symvers and reuse it for the second modpost	2020-06-06 23:38:12 +09:00
index.rst	Devicetree updates for v5.8:	2020-06-04 20:11:25 -07:00
Kconfig
kprobes.txt
logo.gif
lzo.txt	lib/lzo: fix ambiguous encoding bug in lzo-rle	2020-06-11 18:17:47 -07:00
mailbox.txt
Makefile	media updates for v5.8-rc1	2020-06-03 20:59:38 -07:00
memory-barriers.txt
nommu-mmap.txt
remoteproc.txt
rpmsg.txt
speculation.txt
static-keys.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
SubmittingPatches
tee.txt
this_cpu_ops.txt
watch_queue.rst	pipe: Add general notification queue support	2020-05-19 15:08:24 +01:00
xz.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00