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4b5bbc39d7
linux/include
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Kemeng Shi 4b5bbc39d7 writeback: support retrieving per group debug writeback stats of bdi 
Add /sys/kernel/debug/bdi/xxx/wb_stats to show per group writeback stats
of bdi.

Following domain hierarchy is tested:
                global domain (320G)
                /                 \
        cgroup domain1(10G)     cgroup domain2(10G)
                |                 |
bdi            wb1               wb2

/* per wb writeback info of bdi is collected */
cat wb_stats
WbCgIno:                    1
WbWriteback:                0 kB
WbReclaimable:              0 kB
WbDirtyThresh:              0 kB
WbDirtied:                  0 kB
WbWritten:                  0 kB
WbWriteBandwidth:      102400 kBps
b_dirty:                    0
b_io:                       0
b_more_io:                  0
b_dirty_time:               0
state:                      1

WbCgIno:                 4091
WbWriteback:             1792 kB
WbReclaimable:         820512 kB
WbDirtyThresh:        6004692 kB
WbDirtied:            1820448 kB
WbWritten:             999488 kB
WbWriteBandwidth:      169020 kBps
b_dirty:                    0
b_io:                       0
b_more_io:                  1
b_dirty_time:               0
state:                      5

WbCgIno:                 4131
WbWriteback:             1120 kB
WbReclaimable:         820064 kB
WbDirtyThresh:        6004728 kB
WbDirtied:            1822688 kB
WbWritten:            1002400 kB
WbWriteBandwidth:      153520 kBps
b_dirty:                    0
b_io:                       0
b_more_io:                  1
b_dirty_time:               0
state:                      5

[shikemeng@huaweicloud.com: fix build problems]
  Link: https://lkml.kernel.org/r/20240423034643.141219-4-shikemeng@huaweicloud.com
Link: https://lkml.kernel.org/r/20240423034643.141219-3-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Brian Foster <bfoster@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-05 17:53:51 -07:00
..
acpi mm: change inlined allocation helpers to account at the call site 2024-04-25 20:55:59 -07:00
asm-generic mm: change inlined allocation helpers to account at the call site 2024-04-25 20:55:59 -07:00
clocksource
crypto mm: change inlined allocation helpers to account at the call site 2024-04-25 20:55:59 -07:00
drm drm fixes for 6.9-rc1 2024-03-21 19:04:31 -07:00
dt-bindings Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
keys
kunit
kvm KVM: arm64: Fix host-programmed guest events in nVHE 2024-03-26 01:51:44 -07:00
linux writeback: support retrieving per group debug writeback stats of bdi 2024-05-05 17:53:51 -07:00
math-emu
media media updates for v6.9-rc1 2024-03-15 11:36:54 -07:00
memory
misc
net mm: change inlined allocation helpers to account at the call site 2024-04-25 20:55:59 -07:00
pcmcia
ras PCI/AER: Generalize TLP Header Log reading 2024-03-08 15:26:46 -06:00
rdma fix missing vmalloc.h includes 2024-04-25 20:55:49 -07:00
rv
scsi scsi: sd: Fix TCG OPAL unlock on system resume 2024-03-25 15:46:12 -04:00
soc Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
sound ASoC: Fixes for v6.9 2024-04-05 08:48:12 +02:00
target
trace trace/events/page_ref: trace the raw page mapcount value 2024-05-05 17:53:31 -07:00
uapi vhost-vdpa: change ioctl # for VDPA_GET_VRING_SIZE 2024-04-08 04:11:04 -04:00
ufs scsi: ufs: core: Add config_scsi_dev vops comment 2024-03-10 18:10:24 -04:00
vdso vdso: Use CONFIG_PAGE_SHIFT in vdso/datapage.h 2024-04-03 21:50:04 +02:00
video
xen