mirror of
https://abf.rosa.ru/djam/kernel-6.6.git
synced 2025-02-25 20:02:47 +00:00
Revisited the patchset for the version 4.9.0
Among other things: * BFQ was updated to v8r7 for 4.9.0 * AUFS was updated to version 4.9-20161219 * inotify-increase-max-user-watches.patch was dropped: it is better to tune such things from user space instead.
This commit is contained in:
Evgenii Shatokhin
parent
b32d565192
commit
f1688e3205
8 changed files with 3589 additions and 1585 deletions
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@ -1,7 +1,7 @@
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From f2ebe596e7d72e96e0fb2be87be90f0b96e6f1b3 Mon Sep 17 00:00:00 2001
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From 465ed48c05de63f5bdd34d83915f1b8998a62134 Mon Sep 17 00:00:00 2001
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From: Paolo Valente <paolo.valente@unimore.it>
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Date: Tue, 7 Apr 2015 13:39:12 +0200
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Subject: [PATCH 1/4] block: cgroups, kconfig, build bits for BFQ-v7r11-4.8.0
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Subject: [PATCH 1/4] block: cgroups, kconfig, build bits for BFQ-v7r11-4.5.0
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Update Kconfig.iosched and do the related Makefile changes to include
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kernel configuration options for BFQ. Also increase the number of
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@ -74,7 +74,7 @@ index 421bef9..0ee5f0f 100644
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endmenu
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diff --git a/block/Makefile b/block/Makefile
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index 9eda232..4a36683 100644
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index 36acdd7..736e91a 100644
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--- a/block/Makefile
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+++ b/block/Makefile
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@@ -18,6 +18,7 @@ obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
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@ -86,7 +86,7 @@ index 9eda232..4a36683 100644
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obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
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obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
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diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
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index e79055c..931ff1e 100644
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index c47c358..1047d99 100644
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--- a/include/linux/blkdev.h
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+++ b/include/linux/blkdev.h
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@@ -45,7 +45,7 @@ struct pr_ops;
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@ -99,5 +99,5 @@ index e79055c..931ff1e 100644
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typedef void (rq_end_io_fn)(struct request *, int);
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--
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2.7.4 (Apple Git-66)
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2.10.0
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@ -1,8 +1,7 @@
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From d9af6fcc4167cbb8433b10bbf3663c8297487f52 Mon Sep 17 00:00:00 2001
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From a43c7e21bccd510d72a003e350247b1b4c6b71c3 Mon Sep 17 00:00:00 2001
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From: Paolo Valente <paolo.valente@unimore.it>
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Date: Thu, 9 May 2013 19:10:02 +0200
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Subject: [PATCH 2/4] block: introduce the BFQ-v7r11 I/O sched, to be ported to
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4.8.0
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Subject: [PATCH 2/4] block: introduce the BFQ-v7r11 I/O sched for 4.5.0
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The general structure is borrowed from CFQ, as much of the code for
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handling I/O contexts. Over time, several useful features have been
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@ -7106,5 +7105,5 @@ index 0000000..2bf54ae
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+
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+#endif /* _BFQ_H */
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--
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2.7.4 (Apple Git-66)
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2.10.0
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@ -1,8 +1,8 @@
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From 409e62551360d2802992b0175062237352793a2a Mon Sep 17 00:00:00 2001
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From 52135041a6bf118c80a6858f63aff70b325389c4 Mon Sep 17 00:00:00 2001
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From: Mauro Andreolini <mauro.andreolini@unimore.it>
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Date: Sun, 6 Sep 2015 16:09:05 +0200
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Subject: [PATCH 3/4] block, bfq: add Early Queue Merge (EQM) to BFQ-v7r11, to
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port to 4.8.0
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Subject: [PATCH 3/4] block, bfq: add Early Queue Merge (EQM) to BFQ-v7r11 for
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4.5.0
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A set of processes may happen to perform interleaved reads, i.e.,requests
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whose union would give rise to a sequential read pattern. There are two
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@ -1097,5 +1097,5 @@ index 2bf54ae..fcce855 100644
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static void bfq_put_queue(struct bfq_queue *bfqq);
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static void bfq_dispatch_insert(struct request_queue *q, struct request *rq);
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--
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2.7.4 (Apple Git-66)
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2.10.0
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File diff suppressed because it is too large
Load diff
119
README.BFQ
119
README.BFQ
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@ -1,8 +1,8 @@
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Budget Fair Queueing I/O Scheduler
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==================================
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This patchset introduces BFQ-v8r4 into Linux 4.8.0.
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For further information: http://algogroup.unimore.it/people/paolo/disk_sched/.
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This patchset introduces BFQ-v8r7 into Linux 4.9.0.
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For further information: http://algogroup.unimore.it/people/paolo/disk_sched/
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The overall diffstat is the following:
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@ -18,6 +18,120 @@ The overall diffstat is the following:
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CHANGELOG
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BFQ v8r7
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. BUGFIX: make BFQ compile also without hierarchical support
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BFQ v8r6
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. BUGFIX Removed the check that, when the new queue to set in service
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must be selected, the cached next_in_service entities coincide with
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the entities chosen by __bfq_lookup_next_entity. This check, issuing
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a warning on failure, was wrong, because the cached and the newly
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chosen entity could differ in case of a CLASS_IDLE timeout.
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. EFFICIENCY IMPROVEMENT (this improvement is related to the above
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BUGFIX) The cached next_in_service entities are now really used to
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select the next queue to serve when the in-service queue
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expires. Before this change, the cached values were used only for
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extra (and in general wrong) consistency checks. This caused
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additional overhead instead of reducing it.
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. EFFICIENCY IMPROVEMENT The next entity to serve, for each level of
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the hierarchy, is now updated on every event that may change it,
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i.e., on every activation or deactivation of any entity. This finer
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granularity is not strictly needed for corectness, because it is
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only on queue expirations that BFQ needs to know what are the next
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entities to serve. Yet this change makes it possible to implement
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optimizations in which it is necessary to know the next queue to
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serve before the in-service queue expires.
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. SERVICE-ACCURACY IMPROVEMENT The per-device CLASS_IDLE service
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timeout has been turned into a much more accurate per-group timeout.
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. CODE-QUALITY IMPROVEMENT The non-trivial parts touched by the above
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improvements have been partially rewritten, and enriched of
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comments, so as to improve their transparency and understandability.
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. IMPROVEMENT Ported and improved CFQ commit 41647e7a Before this
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improvememtn, BFQ used the same logic for detecting seeky queues for
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rotational disks and SSDs. This logic is appropriate for the former,
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as it takes into account only inter-request distance, and the latter
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is the dominant latency factor on a rotational device. Yet things
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change with flash-based devices, where serving a large request still
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yields a high throughput, even the request is far from the previous
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request served. This commits extends seeky detection to take into
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accoutn also this fact with flash-based devices. In particular, this
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commit is an improved port of the original commit 41647e7a for CFQ.
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. CODE IMPROVEMENT Remove useless parameter from bfq_del_bfqq_busy
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. OPTIMIZATION Optimize the update of next_in_service entity. If the
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update of the next_in_service candidate entity is triggered by the
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activation of an entity, then it is not necessary to perform full
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lookups in the active trees to update next_in_service. In fact, it
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is enough to check whether the just-activated entity has a higher
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priority than next_in_service, or, even if it has the same priority
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as next_in_service, is eligible and has a lower virtual finish time
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than next_in_service. If this compound condition holds, then the new
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entity can be set as the new next_in_service. Otherwise no change is
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needed. This commit implements this optimization.
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. BUGFIX Fix bug causing occasional loss of weight raising. When a
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bfq_queue, say bfqq, is split after a merging with another
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bfq_queue, BFQ checks whether it has to restore for bfqq the
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weight-raising state that bfqq had before being merged. In
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particular, the weight-raising is restored only if, according to the
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weight-raising duration decided for bfqq when it started to be
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weight-raised (before being merged), bfqq would not have already
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finished its weight-raising period. Yet, by mistake, such a
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duration was not saved when bfqq is merged. So, if bfqq was freed
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and reallocated when it was split, then this duration was wrongly
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set to zero on the split. As a consequence, the weight-raising state
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of bfqq was wrongly not restored, which caused BFQ to fail in
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guaranteeing a low latency to bfqq. This commit fixes this bug by
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saving weight-raising duration when bfqq is merged, and correctly
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restoring it when bfqq is split.
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. BUGFIX Fix wrong reset of in-service entities In-service entities
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were reset with an indirect logic, which happened to be even buggy
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for some cases. This commit fixes this bug in two important
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steps. First, by replacing this indirect logic with a direct logic,
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in which all involved entities are immediately reset, with a
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bubble-up loop, when the in-service queue is reset. Second, by
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restructuring the code related to this change, so as to become not
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only correct with respect to this change, but also cleaner and
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hopefully clearer.
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. CODE IMPROVEMENT Add code to be able to redirect trace log to
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console.
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. BUGFIX Fixed bug in optimized update of next_in_service entity.
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There was a case where bfq_update_next_in_service did not update
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next_in_service, even if it might need to be changed: in case of
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requeueing or repositioning of the entity that happened to be
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pointed exactly by next_in_service. This could result in violation
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of service guarantees, because, after a change of timestamps for
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such an entity, it might be the case that next_in_service had to
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point to a different entity. This commit fixes this bug.
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. OPTIMIZATION Stop bubble-up of next_in_service update if possible.
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. BUGFIX Fixed a false-positive warning for uninitialized var
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BFQ-v8r5
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. DOCUMENTATION IMPROVEMENT Added documentation of BFQ benefits, inner
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workings, interface and tunables.
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. BUGFIX: Replaced max wrongly used for modulo numbers.
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. DOCUMENTATION IMPROVEMENT Improved help message in Kconfig.iosched.
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. BUGFIX: Removed wrong conversion in use of bfq_fifo_expire.
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. CODE IMPROVEMENT Added parentheses to complex macros.
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v8r4
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. BUGFIX The function bfq_find_set_group may return a NULL pointer,
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@ -589,4 +703,3 @@ correctly catch the peak rate with all disks we used
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4) added the low latency mechanism described in detail in
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http://algogroup.unimore.it/people/paolo/disk_sched/description.php.
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@ -1,8 +1,8 @@
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diff --git a/Makefile b/Makefile
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index 5a493e7..2055c07 100644
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index b103777..e942e6a 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -540,9 +540,7 @@ ifeq ($(KBUILD_EXTMOD),)
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@@ -555,9 +555,7 @@ ifeq ($(KBUILD_EXTMOD),)
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# Carefully list dependencies so we do not try to build scripts twice
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# in parallel
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PHONY += scripts
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@ -13,7 +13,7 @@ index 5a493e7..2055c07 100644
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# Objects we will link into vmlinux / subdirs we need to visit
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init-y := init/
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@@ -986,7 +984,7 @@ prepare0: archprepare FORCE
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@@ -1033,7 +1031,7 @@ prepare0: archprepare gcc-plugins
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$(Q)$(MAKE) $(build)=.
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# All the preparing..
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@ -22,7 +22,7 @@ index 5a493e7..2055c07 100644
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ifdef CONFIG_STACK_VALIDATION
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has_libelf := $(call try-run,\
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@@ -1171,13 +1169,8 @@ endif # CONFIG_MODULES
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@@ -1268,13 +1266,8 @@ endif # CONFIG_MODULES
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CLEAN_DIRS += $(MODVERDIR)
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# Directories & files removed with 'make mrproper'
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@ -38,7 +38,7 @@ index 5a493e7..2055c07 100644
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# clean - Delete most, but leave enough to build external modules
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#
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@@ -1198,7 +1191,7 @@ clean: archclean vmlinuxclean
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@@ -1296,7 +1289,7 @@ clean: archclean vmlinuxclean
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#
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mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
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mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
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@ -48,10 +48,10 @@ index 5a493e7..2055c07 100644
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PHONY += $(mrproper-dirs) mrproper archmrproper
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$(mrproper-dirs):
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diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
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index ebced77..7f51efa 100644
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index 90a091b..7f51efa 100644
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--- a/scripts/kconfig/Makefile
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+++ b/scripts/kconfig/Makefile
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@@ -19,23 +19,16 @@ endif
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@@ -19,25 +19,16 @@ endif
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unexport CONFIG_
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xconfig: $(obj)/qconf
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@ -71,11 +71,13 @@ index ebced77..7f51efa 100644
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silentoldconfig: $(obj)/conf
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- $(Q)mkdir -p include/config include/generated
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- $(Q)test -e include/generated/autoksyms.h || \
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- touch include/generated/autoksyms.h
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- $< $(silent) --$@ $(Kconfig)
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localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
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$(Q)mkdir -p include/config include/generated
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@@ -81,7 +74,6 @@ simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
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@@ -83,7 +74,6 @@ simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
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PHONY += $(simple-targets)
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$(simple-targets): $(obj)/conf
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@ -83,7 +85,7 @@ index ebced77..7f51efa 100644
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PHONY += oldnoconfig savedefconfig defconfig
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@@ -91,23 +83,10 @@ PHONY += oldnoconfig savedefconfig defconfig
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@@ -93,23 +83,10 @@ PHONY += oldnoconfig savedefconfig defconfig
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oldnoconfig: olddefconfig
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savedefconfig: $(obj)/conf
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906
fs-aufs4.patch
906
fs-aufs4.patch
File diff suppressed because it is too large
Load diff
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@ -1,20 +0,0 @@
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http://bugs.rosalinux.ru/show_bug.cgi?id=4791
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It seems, many applications need max_user_watches to be at least 32768.
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Let us set the default value of this parameter accordingly.
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Signed-off-by: Eugene A. Shatokhin <eugene.shatokhin@rosalab.ru>
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diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
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index 78a2ca3..ecd1120 100644
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--- a/fs/notify/inotify/inotify_user.c
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+++ b/fs/notify/inotify/inotify_user.c
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@@ -809,7 +809,7 @@ static int __init inotify_user_setup(void)
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inotify_max_queued_events = 16384;
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inotify_max_user_instances = 128;
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- inotify_max_user_watches = 8192;
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+ inotify_max_user_watches = 32768;
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return 0;
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}
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