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
PCI	pci-v5.8-changes	2020-06-06 11:01:58 -07:00
RCU	…
accounting	…
admin-guide	blk-cgroup: show global disk stats in root cgroup io.stat	2020-07-17 20:18:00 -06:00
arm	docs: dt: convert ABI.txt to ReST format	2020-05-04 17:09:52 -05:00
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-guide	usb: typec: Add firmware documentation for the Intel PMC mux control	2020-05-13 14:20:49 +02:00
firmware_class	…
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	docs: add IRQ documentation at the core-api book	2020-05-15 12:00:56 -06:00
ide	…
iio	docs: filesystems: convert configfs.txt to ReST	2020-05-05 09:23:25 -06:00
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	livepatch: Remove .klp.arch	2020-05-08 00:12:42 +02:00
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	…
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
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	timer: add fsleep for flexible sleeping	2020-05-06 17:03:34 -07:00
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	w1_therm: adding bulk read support to trigger multiple conversion on bus	2020-05-15 16:29:00 +02:00
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	…
COPYING-logo	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
Changes	…
CodingStyle	…
Kconfig	…
Makefile	media updates for v5.8-rc1	2020-06-03 20:59:38 -07:00
SubmittingPatches	…
asm-annotations.rst	…
atomic_bitops.txt	…
atomic_t.txt	…
bus-virt-phys-mapping.txt	…
conf.py	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
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	…
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
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