| /Linux-v5.15/tools/testing/selftests/powerpc/pmu/ |
| D | count_instructions.c | 30 u64 overhead, bool report) in do_count_loop() argument
45 expected = instructions + overhead; in do_count_loop()
53 printf("Looped for %llu instructions, overhead %llu\n", instructions, overhead); in do_count_loop()
76 u64 current, overhead; in determine_overhead() local
80 overhead = events[0].result.value; in determine_overhead()
85 if (current < overhead) { in determine_overhead()
86 printf("Replacing overhead %llu with %llu\n", overhead, current); in determine_overhead()
87 overhead = current; in determine_overhead()
91 return overhead; in determine_overhead()
97 u64 overhead; in test_body() local
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| D | count_stcx_fail.c | 30 u64 overhead, bool report) in do_count_loop() argument
47 expected = instructions + overhead + (events[2].result.value * 10); in do_count_loop()
57 printf("Looped for %llu instructions, overhead %llu\n", instructions, overhead); in do_count_loop()
81 u64 current, overhead; in determine_overhead() local
85 overhead = events[0].result.value; in determine_overhead()
90 if (current < overhead) { in determine_overhead()
91 printf("Replacing overhead %llu with %llu\n", overhead, current); in determine_overhead()
92 overhead = current; in determine_overhead()
96 return overhead; in determine_overhead()
105 u64 overhead; in test_body() local
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| /Linux-v5.15/tools/testing/selftests/powerpc/pmu/ebb/ |
| D | instruction_count_test.c | 26 uint64_t overhead, bool report) in do_count_loop() argument
46 expected = instructions + overhead; in do_count_loop()
51 printf("Looped for %lu instructions, overhead %lu\n", instructions, overhead); in do_count_loop()
72 uint64_t current, overhead; in determine_overhead() local
76 overhead = event->result.value; in determine_overhead()
81 if (current < overhead) { in determine_overhead()
82 printf("Replacing overhead %lu with %lu\n", overhead, current); in determine_overhead()
83 overhead = current; in determine_overhead()
87 return overhead; in determine_overhead()
112 uint64_t overhead; in instruction_count() local
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| /Linux-v5.15/tools/perf/Documentation/ |
| D | callchain-overhead-calculation.txt | 3 The overhead can be shown in two columns as 'Children' and 'Self' when
4 perf collects callchains. The 'self' overhead is simply calculated by
7 'self' overhead values should be 100%.
9 The 'children' overhead is calculated by adding all period values of
10 the child functions so that it can show the total overhead of the
15 It might be confusing that the sum of all the 'children' overhead
17 'self' overhead of its child functions. But with this enabled, users
18 can find which function has the most overhead even if samples are
45 in the usual (self-overhead-only) output of perf report:
64 When the --children option is enabled, the 'self' overhead values of
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| D | perf-config.txt | 185 'top' means a overhead percentage which is more than 5%.
190 'medium' means a overhead percentage which has more than 0.5%.
193 'normal' means the rest of overhead percentages
368 But if this option is 'false', percent values for overhead are printed i.e.
405 This option control the way to calculate overhead of filtered entries -
415 This is an original overhead and we'll filter out the first 'foo'
416 entry. The value of 'relative' would increase the overhead of 'bar'
418 current overhead (33.33%).
444 flat and folded. This option controls a way to show overhead for each callchain
461 (meaning that it assumes 100% total overhead of 'foo').
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| D | perf-top.txt | 132 local_weight, abort, in_tx, transaction, overhead, sample, period.
138 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
153 percentage of the overhead column. See --percentage for more info.
157 percentage of the overhead column. See --percentage for more info.
161 percentage of the overhead column. See --percentage for more info.
191 enabled. See the `overhead calculation' section for more details.
208 Do not show entries which have an overhead under that percent.
212 Determine how to display the overhead percentage of filtered entries.
315 Alternatively one can ask for --group and then two overhead columns
393 include::callchain-overhead-calculation.txt[]
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| D | perf-report.txt | 47 the overhead column. See --percentage for more info.
57 the overhead column. See --percentage for more info.
62 the overhead column. See --percentage for more info.
100 - overhead: Overhead percentage of sample
110 --time-quantum (default 100ms). Specify with overhead and before it.
143 executed, such as a memory access bottleneck. If a function has high overhead
194 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
241 - graph: use a graph tree, displaying absolute overhead rates. (default)
270 - percent: display overhead percent (default)
278 See the `overhead calculation' section for more details. Enabled by
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| /Linux-v5.15/drivers/net/fddi/skfp/ |
| D | ess.c | 100 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
119 u_long payload, overhead ; in ess_raf_received_pack() local
257 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
260 payload, overhead); in ess_raf_received_pack()
265 (void)process_bw_alloc(smc,(long)payload,(long)overhead) ; in ess_raf_received_pack()
308 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
313 payload, overhead); in ess_raf_received_pack()
318 if(!process_bw_alloc(smc,(long)payload,(long)overhead)) in ess_raf_received_pack()
375 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead) in process_bw_alloc() argument
426 if (payload > MAX_PAYLOAD || overhead > 5000) { in process_bw_alloc()
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| /Linux-v5.15/net/sctp/ |
| D | output.c | 60 packet->size = packet->overhead; in sctp_packet_reset()
95 packet->overhead = sctp_mtu_payload(sp, 0, 0); in sctp_packet_config()
96 packet->size = packet->overhead; in sctp_packet_config()
154 packet->overhead = 0; in sctp_packet_init()
220 int overhead = 0; in sctp_packet_bundle_pad() local
226 overhead += sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); in sctp_packet_bundle_pad()
227 overhead += sizeof(struct sctp_sender_hb_info) + sizeof(struct sctp_pad_chunk); in sctp_packet_bundle_pad()
228 pad = sctp_make_pad(t->asoc, t->pl.probe_size - overhead); in sctp_packet_bundle_pad()
457 pkt_size = packet->overhead; in sctp_packet_pack()
464 else if (auth_len + padded + packet->overhead > in sctp_packet_pack()
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| /Linux-v5.15/drivers/net/wireless/ralink/rt2x00/ |
| D | rt2x00crypto.c | 68 unsigned int overhead = 0; in rt2x00crypto_tx_overhead() local
71 return overhead; in rt2x00crypto_tx_overhead()
78 overhead += key->icv_len; in rt2x00crypto_tx_overhead()
81 overhead += key->iv_len; in rt2x00crypto_tx_overhead()
85 overhead += 8; in rt2x00crypto_tx_overhead()
88 return overhead; in rt2x00crypto_tx_overhead()
|
| /Linux-v5.15/fs/freevxfs/ |
| D | vxfs_lookup.c | 108 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_find_entry() local
110 pos += overhead; in vxfs_find_entry()
111 pg_ofs += overhead; in vxfs_find_entry()
259 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_readdir() local
261 pos += overhead; in vxfs_readdir()
262 pg_ofs += overhead; in vxfs_readdir()
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| /Linux-v5.15/Documentation/vm/damon/ |
| D | index.rst | 12 - *light-weight* (the monitoring overhead is low enough to be applied online),
14 - *scalable* (the upper-bound of the overhead is in constant range regardless
19 that incurring high data accesses monitoring overhead could implemented again.
|
| D | faq.rst | 11 used online, any unnecessary overhead such as kernel - user space context
23 the overhead. On the other hand, DAMON is a higher-level framework for the
25 optimization and provides sophisticated accuracy/overhead handling mechanisms.
|
| D | design.rst | 11 and the overhead controllable. The fundamental access monitorings require
13 the other hand, the accuracy and overhead tradeoff mechanism, which is the core
49 mapping is not strictly required but could even incur a high overhead in some
117 The monitoring overhead of this mechanism will arbitrarily increase as the
124 To avoid the unbounded increase of the overhead, DAMON groups adjacent pages
131 overhead is controllable by setting the number of regions. DAMON allows users
153 In this way, DAMON provides its best-effort quality and minimal overhead while
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| /Linux-v5.15/net/l2tp/ |
| D | l2tp_eth.c | 208 unsigned int overhead = 0; in l2tp_eth_adjust_mtu() local
214 overhead += sizeof(struct udphdr); in l2tp_eth_adjust_mtu()
233 overhead += session->hdr_len + ETH_HLEN + l3_overhead; in l2tp_eth_adjust_mtu()
235 mtu = l2tp_tunnel_dst_mtu(tunnel) - overhead; in l2tp_eth_adjust_mtu()
237 dev->mtu = ETH_DATA_LEN - overhead; in l2tp_eth_adjust_mtu()
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| /Linux-v5.15/include/net/sctp/ |
| D | sctp.h | 582 __u32 overhead = sizeof(struct sctphdr) + extra; in __sctp_mtu_payload() local
585 overhead += sp->pf->af->net_header_len; in __sctp_mtu_payload()
587 overhead += sizeof(struct udphdr); in __sctp_mtu_payload()
589 overhead += sizeof(struct ipv6hdr); in __sctp_mtu_payload()
592 if (WARN_ON_ONCE(mtu && mtu <= overhead)) in __sctp_mtu_payload()
593 mtu = overhead; in __sctp_mtu_payload()
595 return mtu ? mtu - overhead : overhead; in __sctp_mtu_payload()
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| /Linux-v5.15/fs/ext4/ |
| D | resize.c | 109 ext4_grpblk_t overhead; in ext4_group_overhead_blocks() local
110 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
112 overhead += 1 + in ext4_group_overhead_blocks()
114 return overhead; in ext4_group_overhead_blocks()
129 unsigned overhead; in verify_group_input() local
141 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
142 metaend = start + overhead; in verify_group_input()
144 input->blocks_count - 2 - overhead - sbi->s_itb_per_group; in verify_group_input()
296 unsigned overhead; in ext4_alloc_group_tables() local
314 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
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| /Linux-v5.15/Documentation/driver-api/mmc/ |
| D | mmc-async-req.rst | 8 How significant is the cache maintenance overhead?
11 pre-fetch makes the cache overhead relatively significant. If the DMA
13 transfer, the DMA preparation overhead would not affect the MMC performance.
75 Pseudocode to handle is_first_req scenario with minimal prepare overhead::
|
| /Linux-v5.15/net/mac80211/ |
| D | airtime.c | 410 u32 *overhead) in ieee80211_get_rate_duration() argument
462 *overhead = 36 + (streams << 2); in ieee80211_get_rate_duration()
473 u32 duration, overhead = 0; in ieee80211_calc_rx_airtime() local
494 duration = ieee80211_get_rate_duration(hw, status, &overhead); in ieee80211_calc_rx_airtime()
502 return duration + overhead; in ieee80211_calc_rx_airtime()
655 u32 duration, overhead; in ieee80211_calc_expected_tx_airtime() local
664 duration = ieee80211_get_rate_duration(hw, &stat, &overhead); in ieee80211_calc_expected_tx_airtime()
690 duration += (overhead >> agg_shift); in ieee80211_calc_expected_tx_airtime()
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| D | rc80211_minstrel_ht.c | 434 unsigned int nsecs = 0, overhead = mi->overhead; in minstrel_ht_get_tp_avg() local
442 overhead = mi->overhead_legacy; in minstrel_ht_get_tp_avg()
446 nsecs = 1000 * overhead / ampdu_len; in minstrel_ht_get_tp_avg()
1270 unsigned int overhead = 0, overhead_rtscts = 0; in minstrel_calc_retransmit() local
1292 overhead = mi->overhead_legacy; in minstrel_calc_retransmit()
1295 overhead = mi->overhead; in minstrel_calc_retransmit()
1300 tx_time = ctime + 2 * (overhead + tx_time_data); in minstrel_calc_retransmit()
1310 tx_time += ctime + overhead + tx_time_data; in minstrel_calc_retransmit()
1606 mi->overhead = ieee80211_frame_duration(sband->band, 0, 60, 1, 1, 0); in minstrel_ht_update_caps()
1607 mi->overhead += ack_dur; in minstrel_ht_update_caps()
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| /Linux-v5.15/Documentation/virt/ |
| D | paravirt_ops.rst | 25 known that the overhead of indirect call isn't very important.
29 are called frequently and are performance critical. The overhead is
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| /Linux-v5.15/arch/riscv/ |
| D | Kconfig.erratas | 10 that the overhead from this mechanism is just taken once.
20 Otherwise, please say "N" here to avoid unnecessary overhead.
|
| /Linux-v5.15/Documentation/usb/ |
| D | ohci.rst | 20 - improved robustness; bugfixes; and less overhead
30 to overhead in IRQ processing. When interrupt transfers are queued, those
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| /Linux-v5.15/drivers/net/fddi/skfp/h/ |
| D | smt.h | 799 struct smt_p_3210 overhead ; /* current SBA overhead */ member
816 struct smt_p_3210 overhead ; /* current SBA overhead */ member
832 struct smt_p_3210 overhead ; /* current SBA overhead */ member
854 struct smt_p_3210 overhead ; /* current SBA overhead */ member
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| /Linux-v5.15/Documentation/filesystems/ext4/ |
| D | bigalloc.rst | 11 blocks to reduce both fragmentation and metadata overhead. The
23 also shrinking the amount of file system overhead for metadata.
|
