| /linux/fs/ubifs/ |
| H A D | shrinker.c | 53 * @contention: if any contention, this is set to %1
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()
138 * @contention: if any contention, this is set to %1
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; ubifs_shrink_scan() local
[all...] |
| /linux/tools/perf/tests/shell/ |
| H A D | lock_contention.sh | 2 # kernel lock contention analysis test
31 echo "[Skip] No lock contention tracepoints"
46 echo "Testing perf lock record and perf lock contention"
49 perf lock contention -i ${perfdata} -E 1 -q 2> ${result}
59 echo "Testing perf lock contention --use-bpf"
66 # the perf lock contention output goes to the stderr
77 echo "Testing perf lock record and perf lock contention at the same time"
79 perf lock contention -i- -E 1 -q 2> ${result}
89 echo "Testing perf lock contention --threads"
90 perf lock contention
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| /linux/tools/perf/Documentation/ |
| H A 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. This option can be combined with -t,
188 Show lock contention onl
[all...] |
| H A D | perf-c2c.txt | 37 for cachelines with highest contention - highest number of HITM accesses.
|
| /linux/Documentation/locking/ |
| H A 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
|
| H A 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
|
| H A 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
|
| /linux/tools/perf/scripts/python/bin/ |
| H A D | futex-contention-report | 2 # description: futext contention measurement
4 perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/futex-contention.py
|
| /linux/kernel/rcu/ |
| H A D | Kconfig | 187 against lock contention. Systems that synchronize their
190 lock contention levels acceptably low. Very large systems
196 skew them, which reduces lock contention enough that large
199 lock contention on the leaf-level rcu_node structures unless
206 kernel boot parameter to avoid contention on the rcu_node
|
| /linux/Documentation/bpf/ |
| H A D | map_hash.rst | 241 depends on the size of the map. Larger batch size reduces lock contention, but
261 contention may impact update operations, though the map type and flags may
262 impact the actual contention on those locks, based on the logic described in
|
| /linux/kernel/ |
| H A D | Kconfig.hz | 14 contention and cacheline bounces as a result of timer interrupts.
|
| /linux/Documentation/trace/ |
| H A 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/Documentation/scheduler/ |
| H A 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.
|
| /linux/tools/perf/ |
| H A D | builtin-lock.c | 15 #include "util/lock-contention.h"
299 static int select_key(bool contention) in select_key() argument
304 if (contention) in select_key()
323 static int add_output_field(bool contention, char *name) in add_output_field() argument
328 if (contention) in add_output_field()
346 static int setup_output_field(bool contention, const char *str) in setup_output_field() argument
352 if (contention) in setup_output_field()
370 ret = add_output_field(contention, tok); in setup_output_field()
1100 * It can have nested contention begin with mutex spinning, in report_lock_contention_begin_event()
1101 * then we would use the original contention begi in report_lock_contention_begin_event()
[all...] |
| /linux/Documentation/mm/ |
| H A D | split_page_table_lock.rst | 7 multi-threaded applications due to high contention on the lock. To improve
|
| /linux/Documentation/networking/ |
| H A D | scaling.rst | 259 during CPU contention by dropping packets from large flows slightly
278 and cache contention) and toggled per CPU by setting the relevant bit
475 provides two benefits. First, contention on the device queue lock is
477 (contention can be eliminated completely if each CPU has its own
555 experience no contention. If there are fewer queues than CPUs, then the
|
| H A D | tcp_ao.rst | 280 | Scalability | contention on | contention on |
|
| /linux/drivers/gpu/drm/ |
| H A D | Kconfig | 149 bool "Enable backtrace history for lock contention"
157 contention. A history of each drm modeset lock path hitting -EDEADLK
|
| /linux/Documentation/devicetree/bindings/sound/ |
| H A D | cs35l36.txt | 34 port to prevent bus contention on the output signal
|
| /linux/Documentation/trace/rv/ |
| H A D | monitor_rtapp.rst | 80 contention on a mutex without priority inheritance). This is priority
|
| /linux/Documentation/admin-guide/mm/ |
| H A D | multigen_lru.rst | 41 theoretically worsen lock contention (mmap_lock). If it is
|
| /linux/Documentation/accounting/ |
| H A D | psi.rst | 13 Without an accurate measure of such contention, users are forced to
|
| /linux/Documentation/arch/arm/ |
| H A D | vlocks.rst | 148 reducing bus contention in contended cases.
|
| /linux/fs/squashfs/ |
| H A D | Kconfig | 52 it eliminates a memcpy and it also removes the lock contention
|
| /linux/lib/ |
| H A D | Kconfig.kcsan | 98 due to reducing cache-line contention. The chosen default is a
|