| /linux-6.12.1/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-6.12.1/tools/perf/tests/shell/ |
| D | lock_contention.sh | 49 perf lock contention -i ${perfdata} -E 1 -q 2> ${result}
79 perf lock contention -i- -E 1 -q 2> ${result}
90 perf lock contention -i ${perfdata} -t -E 1 -q 2> ${result}
113 perf lock contention -i ${perfdata} -l -E 1 -q 2> ${result}
154 perf lock contention -i ${perfdata} -Y spinlock -q 2> ${result}
176 perf lock contention -i ${perfdata} -l -q 2> ${result}
182 perf lock contention -i ${perfdata} -L tasklist_lock -q 2> ${result}
208 perf lock contention -i ${perfdata} -v -q 2> ${result}
214 perf lock contention -i ${perfdata} -E 1 -S unix_stream -q 2> ${result}
236 perf lock contention -i ${perfdata} -v -q 2> ${result}
[all …]
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| /linux-6.12.1/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).
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| /linux-6.12.1/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-6.12.1/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-6.12.1/kernel/rcu/ |
| D | Kconfig | 174 against lock contention. Systems that synchronize their
177 lock contention levels acceptably low. Very large systems
183 skew them, which reduces lock contention enough that large
186 lock contention on the leaf-level rcu_node structures unless
193 kernel boot parameter to avoid contention on the rcu_node
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| /linux-6.12.1/kernel/ |
| D | Kconfig.hz | 14 contention and cacheline bounces as a result of timer interrupts.
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| /linux-6.12.1/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-6.12.1/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-6.12.1/tools/perf/ |
| D | builtin-lock.c | 317 static int select_key(bool contention) in select_key() argument
322 if (contention) in select_key()
341 static int add_output_field(bool contention, char *name) in add_output_field() argument
346 if (contention) in add_output_field()
364 static int setup_output_field(bool contention, const char *str) in setup_output_field() argument
370 if (contention) in setup_output_field()
388 ret = add_output_field(contention, tok); in setup_output_field()
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| /linux-6.12.1/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-6.12.1/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-6.12.1/Documentation/networking/ |
| D | scaling.rst | 252 during CPU contention by dropping packets from large flows slightly
271 and cache contention) and toggled per CPU by setting the relevant bit
466 provides two benefits. First, contention on the device queue lock is
468 (contention can be eliminated completely if each CPU has its own
546 experience no contention. If there are fewer queues than CPUs, then the
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| D | tcp_ao.rst | 280 | Scalability | contention on | contention on |
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| /linux-6.12.1/Documentation/devicetree/bindings/sound/ |
| D | cs35l36.txt | 34 port to prevent bus contention on the output signal
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| /linux-6.12.1/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-6.12.1/drivers/gpu/drm/ |
| D | Kconfig | 199 bool "Enable backtrace history for lock contention"
207 contention. A history of each drm modeset lock path hitting -EDEADLK
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| /linux-6.12.1/Documentation/admin-guide/mm/ |
| D | multigen_lru.rst | 41 theoretically worsen lock contention (mmap_lock). If it is
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| /linux-6.12.1/Documentation/arch/arm/ |
| D | vlocks.rst | 148 reducing bus contention in contended cases.
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| /linux-6.12.1/Documentation/accounting/ |
| D | psi.rst | 13 Without an accurate measure of such contention, users are forced to
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| /linux-6.12.1/fs/squashfs/ |
| D | Kconfig | 52 it eliminates a memcpy and it also removes the lock contention
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| /linux-6.12.1/Documentation/core-api/ |
| D | swiotlb.rst | 174 trying an allocation, so contention may occur if swiotlb is relatively busy
222 more lock contention.
|