linux/fs/bcachefs/time_stats.c, branch masterMirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=master2025-09-29T20:43:52ZRemove bcachefs core code2025-09-29T20:43:52ZLinus Torvaldstorvalds@linux-foundation.org2025-09-29T20:43:52Zurn:sha1:f2c61db29f277b9c80de92102fc532cc247495cd
bcachefs was marked 'externally maintained' in 6.17 but the code
remained to make the transition smoother.
It's now a DKMS module, making the in-kernel code stale, so remove
it to avoid any version confusion.
Link: https://lore.kernel.org/linux-bcachefs/yokpt2d2g2lluyomtqrdvmkl3amv3kgnipmenobkpgx537kay7@xgcgjviv3n7x/T/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
bcachefs: bch2_time_stats_init_no_pcpu()2025-03-29T02:31:47ZKent Overstreetkent.overstreet@linux.dev2025-03-25T14:52:00Zurn:sha1:daa771332e1e074c22b706e981de28d384577268
Add a mode to disable automatic switching to percpu mode, useful when a
time_stats will only be used by one thread and we don't want to have to
flush the percpu buffers.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: bch2_time_stats_reset()2024-09-09T13:41:49ZKent Overstreetkent.overstreet@linux.dev2024-08-19T19:33:38Zurn:sha1:fdbc9c390ade238383f5a24e4b32e49550dc90e4
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: time_stats: split stats-with-quantiles into a separate structure2024-03-14T01:38:01ZDarrick J. Wongdjwong@kernel.org2024-02-01T20:41:42Zurn:sha1:273960b8f374b95ebd234a99607b7887f515c791
Currently, struct time_stats has the optional ability to quantize the
information that it collects. This is /probably/ useful for callers who
want to see quantized information, but it more than doubles the size of
the structure from 224 bytes to 464. For users who don't care about
that (e.g. upcoming xfs patches) and want to avoid wasting 240 bytes per
counter, split the two into separate pieces.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: mean_and_variance: put struct mean_and_variance_weighted on a diet2024-03-14T01:37:58ZDarrick J. Wongdjwong@kernel.org2024-02-08T23:33:35Zurn:sha1:4b4f0876ab74167cc402ccd5ce9154e7dc666829
The only caller of this code (time_stats) always knows the weights and
whether or not any information has been collected. Pass this
information into the mean and variance code so that it doesn't have to
store that information. This reduces the structure size from 24 to 16
bytes, which shrinks each time_stats counter to 192 bytes from 208.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: time_stats: add larger units2024-03-14T01:37:54ZDarrick J. Wongdjwong@kernel.org2024-02-05T18:50:15Zurn:sha1:cdbfa228a5537dfd7cbd8532701b0c8af70c97b8
Filesystems can stay mounted for a very long time, so add some larger
units.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: pull out time_stats.[ch]2024-03-14T01:30:35ZKent Overstreetkent.overstreet@linux.dev2024-03-14T00:16:40Zurn:sha1:f1ca1abfb0275db241363743ed3606b25b2b1a5c
prep work for lifting out of fs/bcachefs/
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>