| /linux-6.6.21/fs/ubifs/ |
| D | shrinker.c | 58 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()
[all …]
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| /linux-6.6.21/tools/perf/tests/shell/ |
| D | lock_contention.sh | 42 perf lock contention -i ${perfdata} -E 1 -q 2> ${result}
72 perf lock contention -i- -E 1 -q 2> ${result}
83 perf lock contention -i ${perfdata} -t -E 1 -q 2> ${result}
106 perf lock contention -i ${perfdata} -l -E 1 -q 2> ${result}
129 perf lock contention -i ${perfdata} -Y spinlock -q 2> ${result}
151 perf lock contention -i ${perfdata} -l -q 2> ${result}
157 perf lock contention -i ${perfdata} -L tasklist_lock -q 2> ${result}
183 perf lock contention -i ${perfdata} -v -q 2> ${result}
189 perf lock contention -i ${perfdata} -E 1 -S unix_stream -q 2> ${result}
211 perf lock contention -i ${perfdata} -v -q 2> ${result}
[all …]
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| /linux-6.6.21/tools/perf/Documentation/ |
| D | perf-lock.txt | 11 'perf lock' {record|report|script|info|contention}
30 'perf lock contention' shows contention statistics.
40 Output file name for perf lock contention and report.
137 Show per-thread lock contention stat
141 Use BPF program to collect lock contention stats instead of
167 Maximum stack depth when collecting lock contention (default: 8).
178 Show lock contention stat by address
182 Show lock contention stat by owners. Implies --threads and
187 Show lock contention only for given lock types (comma separated list).
198 Show lock contention only for given lock addresses or names (comma separated list).
[all …]
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| /linux-6.6.21/Documentation/locking/ |
| D | lockstat.rst | 14 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
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| D | locktorture.rst | 19 different critical region behaviors. The amount of contention on the lock
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| D | ww-mutex-design.rst | 352 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
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| D | rt-mutex-design.rst | 428 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
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| /linux-6.6.21/tools/perf/scripts/python/bin/ |
| D | futex-contention-report | 4 perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/futex-contention.py
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| /linux-6.6.21/kernel/rcu/ |
| D | Kconfig | 170 against lock contention. Systems that synchronize their
173 lock contention levels acceptably low. Very large systems
179 skew them, which reduces lock contention enough that large
182 lock contention on the leaf-level rcu_node structures unless
189 kernel boot parameter to avoid contention on the rcu_node
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| /linux-6.6.21/kernel/ |
| D | Kconfig.hz | 14 contention and cacheline bounces as a result of timer interrupts.
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| /linux-6.6.21/Documentation/trace/ |
| D | events-kmem.rst | 72 contention on the lruvec->lru_lock.
82 for order-0 pages, reduces contention on the zone->lock and reduces the
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| /linux-6.6.21/Documentation/scheduler/ |
| D | schedutil.rst | 38 two metrics are the same, but once there is contention for the CPU 'running'
40 while 'runnable' will increase to reflect the amount of contention.
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| /linux-6.6.21/tools/perf/ |
| D | builtin-lock.c | 315 static int select_key(bool contention) in select_key() argument
320 if (contention) in select_key()
339 static int add_output_field(bool contention, char *name) in add_output_field() argument
344 if (contention) in add_output_field()
362 static int setup_output_field(bool contention, const char *str) in setup_output_field() argument
368 if (contention) in setup_output_field()
386 ret = add_output_field(contention, tok); in setup_output_field()
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| /linux-6.6.21/Documentation/bpf/ |
| D | map_hash.rst | 255 contention may impact update operations, though the map type and flags may
256 impact the actual contention on those locks, based on the logic described in
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| /linux-6.6.21/Documentation/mm/ |
| D | split_page_table_lock.rst | 7 multi-threaded applications due high contention on the lock. To improve
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| /linux-6.6.21/Documentation/networking/ |
| D | scaling.rst | 195 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
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| /linux-6.6.21/drivers/gpu/drm/ |
| D | Kconfig | 121 bool "Enable backtrace history for lock contention"
129 contention. A history of each drm modeset lock path hitting -EDEADLK
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| /linux-6.6.21/Documentation/devicetree/bindings/sound/ |
| D | cs35l36.txt | 34 port to prevent bus contention on the output signal
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| /linux-6.6.21/Documentation/devicetree/bindings/bus/ |
| D | qcom,ebi2.txt | 78 drive the data bus after OE is de-asserted, in order to avoid contention on
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| /linux-6.6.21/Documentation/admin-guide/mm/ |
| D | multigen_lru.rst | 41 theoretically worsen lock contention (mmap_lock). If it is
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| /linux-6.6.21/Documentation/RCU/Design/Data-Structures/ |
| D | Data-Structures.rst | 67 | leaf ``rcu_node`` structures have fanout of 64, the contention on |
76 | if you are using such a system and running into contention problems |
111 contention remains roughly constant up the tree. No matter how many CPUs
114 thus ensuring that the lock contention on that root ``rcu_node``
118 lock contention under control at all tree levels regardless of the level
636 excessive contention for the leaf ``rcu_node`` structures' ``->lock``
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| /linux-6.6.21/Documentation/accounting/ |
| D | psi.rst | 13 Without an accurate measure of such contention, users are forced to
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| /linux-6.6.21/Documentation/arch/arm/ |
| D | vlocks.rst | 148 reducing bus contention in contended cases.
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| /linux-6.6.21/fs/squashfs/ |
| D | Kconfig | 52 it eliminates a memcpy and it also removes the lock contention
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| /linux-6.6.21/lib/ |
| D | Kconfig.kcsan | 98 due to reducing cache-line contention. The chosen default is a
|