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/Linux-v5.4/fs/ubifs/
Dshrinker.c58 static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention) in shrink_tnc() argument
108 *contention = 1; in shrink_tnc()
144 static int shrink_tnc_trees(int nr, int age, int *contention) in shrink_tnc_trees() argument
167 *contention = 1; in shrink_tnc_trees()
177 *contention = 1; in shrink_tnc_trees()
187 freed += shrink_tnc(c, nr, age, contention); in shrink_tnc_trees()
283 int contention = 0; in ubifs_shrink_scan() local
299 freed = shrink_tnc_trees(nr, OLD_ZNODE_AGE, &contention); in ubifs_shrink_scan()
304 freed += shrink_tnc_trees(nr - freed, YOUNG_ZNODE_AGE, &contention); in ubifs_shrink_scan()
309 freed += shrink_tnc_trees(nr - freed, 0, &contention); in ubifs_shrink_scan()
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/Linux-v5.4/Documentation/locking/
Dlockstat.rst14 Because things like lock contention can severely impact performance.
51 - number of lock contention that involved x-cpu data
80 It also tracks 4 contention points per class. A contention point is a call site
143 short separator (line 08, 13) from the contention points.
145 Lines 09-12 show the first 4 recorded contention points (the code
151 short separator. The contention points don't match the column descriptors,
152 they have two: contentions and [<IP>] symbol. The second set of contention
Dlocktorture.rst19 different critical region behaviors. The amount of contention on the lock
Dww-mutex-design.rst352 contention for a new lock and hence a true chance of deadlock. In that
360 In general, not much contention is expected. The locks are typically used to
Drt-mutex-design.rst428 If there is contention on the lock, we go about the slow path
442 contention).
518 CMPXCHG. Since the taking of a mutex on contention always sets the
/Linux-v5.4/tools/perf/scripts/python/bin/
Dfutex-contention-report4 perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/futex-contention.py
/Linux-v5.4/kernel/rcu/
DKconfig120 against lock contention. Systems that synchronize their
123 lock contention levels acceptably low. Very large systems
129 skew them, which reduces lock contention enough that large
132 lock contention on the leaf-level rcu_node structures unless
139 kernel boot parameter to avoid contention on the rcu_node
/Linux-v5.4/kernel/
DKconfig.hz14 contention and cacheline bounces as a result of timer interrupts.
/Linux-v5.4/Documentation/trace/
Devents-kmem.rst72 contention on the zone->lru_lock.
82 for order-0 pages, reduces contention on the zone->lock and reduces the
/Linux-v5.4/Documentation/vm/
Dsplit_page_table_lock.rst9 multi-threaded applications due high contention on the lock. To improve
Dslub.rst141 (list_lock) where contention may occur.
/Linux-v5.4/Documentation/networking/
Dscaling.rst195 during CPU contention by dropping packets from large flows slightly
214 and cache contention) and toggled per CPU by setting the relevant bit
409 provides two benefits. First, contention on the device queue lock is
411 (contention can be eliminated completely if each CPU has its own
489 experience no contention. If there are fewer queues than CPUs, then the
/Linux-v5.4/Documentation/devicetree/bindings/sound/
Dcs35l36.txt34 port to prevent bus contention on the output signal
/Linux-v5.4/Documentation/accounting/
Dpsi.rst11 Without an accurate measure of such contention, users are forced to
/Linux-v5.4/Documentation/devicetree/bindings/bus/
Dqcom,ebi2.txt78 drive the data bus after OE is de-asserted, in order to avoid contention on
/Linux-v5.4/Documentation/arm/
Dvlocks.rst148 reducing bus contention in contended cases.
/Linux-v5.4/drivers/block/paride/
DTransition-notes113 that the only possible contention is between scheduling ps_tq followed by
/Linux-v5.4/tools/perf/Documentation/
Dperf-c2c.txt32 for cachelines with highest contention - highest number of HITM accesses.
/Linux-v5.4/fs/squashfs/
DKconfig52 it eliminates a memcpy and it also removes the lock contention
/Linux-v5.4/Documentation/filesystems/
Dxfs-delayed-logging-design.txt642 items, it will get held for a significant time and so spin contention is a
658 possible that this lock will become a contention point, but given the short
659 hold time once per transaction I think that contention is unlikely.
679 much contention on the CIL lock, or too many context switches as a result of
681 given separate wait lists to reduce lock contention and the number of processes
Dpath-lookup.txt31 (usually, the root "/" or current working directory). So contention on these
/Linux-v5.4/Documentation/scheduler/
Dsched-bwc.rst106 variable. This is a performance tweak that helps prevent added contention on
/Linux-v5.4/Documentation/
Drobust-futexes.txt16 field. If userspace notices contention (the lock is already owned and
/Linux-v5.4/Documentation/networking/device_drivers/amazon/
Dena.txt145 - Reduced CPU/thread/process contention on a given Ethernet interface.
/Linux-v5.4/Documentation/admin-guide/cgroup-v1/
Dmemory.rst715 a. There is no memory contention
718 When the system detects memory contention or low memory, control groups

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