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/openbmc/linux/tools/testing/selftests/powerpc/pmu/
H A Dcount_instructions.c30 u64 overhead, bool report) in do_count_loop() argument
45 expected = 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()
87 overhead = current; in determine_overhead()
91 return overhead; in determine_overhead()
97 u64 overhead; in test_body() local
112 overhead = determine_overhead(events); in test_body()
116 FAIL_IF(do_count_loop(events, 1000000, overhead, true)); in test_body()
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H A Dcount_stcx_fail.c30 u64 overhead, bool report) in do_count_loop() argument
81 u64 current, overhead; in determine_overhead() local
85 overhead = events[0].result.value; in determine_overhead()
90 if (current < overhead) { in determine_overhead()
92 overhead = current; in determine_overhead()
96 return overhead; in determine_overhead()
105 u64 overhead; in test_body() local
129 overhead = determine_overhead(events); in test_body()
133 FAIL_IF(do_count_loop(events, 1000000, overhead, true)); in test_body()
136 FAIL_IF(do_count_loop(events, 10000000, overhead, true)); in test_body()
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/openbmc/linux/tools/testing/selftests/powerpc/pmu/ebb/
H A Dinstruction_count_test.c26 uint64_t overhead, bool report) in do_count_loop() argument
46 expected = 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()
83 overhead = current; in determine_overhead()
87 return overhead; in determine_overhead()
112 uint64_t overhead; in instruction_count() local
131 overhead = determine_overhead(&event); in instruction_count()
135 FAIL_IF(do_count_loop(&event, 0x100000, overhead, true)); in instruction_count()
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/openbmc/linux/tools/perf/Documentation/
H A Dcallchain-overhead-calculation.txt3 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
18 can find which function has the most overhead even if samples are
45 in the usual (self-overhead-only) output of perf report:
97 Likewise, the 'self' overhead of 'bar' (40%) was added to the
98 'children' overhead of 'main' and '\_\_libc_start_main'.
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H A Dperf-config.txt182 'top' means a overhead percentage which is more than 5%.
187 'medium' means a overhead percentage which has more than 0.5%.
190 'normal' means the rest of overhead percentages
421 current overhead (33.33%).
464 (meaning that it assumes 100% total overhead of 'foo').
466 The 'graph' uses absolute overhead value of 'foo' as total so each of
467 'bar' and 'baz' callchain will have 20.00% of overhead.
505 histogram entries. Entries having an overhead lower than this
507 is '10', only entries which have more than 10% of overhead will be
517 and show (accumulated) total overhead as well as 'Self' overhead.
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H A Dperf-top.txt130 local_weight, abort, in_tx, transaction, overhead, sample, period.
136 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
151 percentage of the overhead column. See --percentage for more info.
155 percentage of the overhead column. See --percentage for more info.
159 percentage of the overhead column. See --percentage for more info.
195 enabled. See the `overhead calculation' section for more details.
212 Do not show entries which have an overhead under that percent.
216 Determine how to display the overhead percentage of filtered entries.
323 Alternatively one can ask for a group and then two overhead columns
401 include::callchain-overhead-calculation.txt[]
H A Dperf-report.txt47 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.
274 - percent: display overhead percent (default)
282 See the `overhead calculation' section for more details. Enabled by
420 Do not show entries which have an overhead under that percent.
427 Determine how to display the overhead percentage of filtered entries.
504 for other events to reduce the overhead.
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/openbmc/linux/drivers/net/fddi/skfp/
H A Dess.c119 u_long payload, overhead ; in ess_raf_received_pack() local
260 payload, overhead); in ess_raf_received_pack()
313 payload, overhead); in ess_raf_received_pack()
426 if (payload > MAX_PAYLOAD || overhead > 5000) { in process_bw_alloc()
437 (u_long)overhead != smc->mib.fddiESSOverhead)) { in process_bw_alloc()
449 smc->ess.sync_bw = overhead - in process_bw_alloc()
457 overhead = 0 ; in process_bw_alloc()
520 chg->overhead.para.p_type = SMT_P3210 ; in ess_send_response()
522 chg->overhead.mib_index = SBAPATHINDEX ; in ess_send_response()
628 req->overhead.para.p_type = SMT_P3210 ; in ess_send_alc_req()
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/openbmc/linux/drivers/net/wireless/ralink/rt2x00/
H A Drt2x00crypto.c68 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()
/openbmc/linux/net/sctp/
H A Doutput.c60 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()
155 packet->overhead = 0; in sctp_packet_init()
221 int overhead = 0; in sctp_packet_bundle_pad() local
458 pkt_size = packet->overhead; in sctp_packet_pack()
465 else if (auth_len + padded + packet->overhead > in sctp_packet_pack()
475 skb_reserve(nskb, packet->overhead + MAX_HEADER); in sctp_packet_pack()
479 pkt_size -= packet->overhead; in sctp_packet_pack()
602 skb_reserve(head, packet->overhead + MAX_HEADER); in sctp_packet_transmit()
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/openbmc/linux/fs/freevxfs/
H A Dvxfs_lookup.c84 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_find_entry() local
86 pos += overhead; in vxfs_find_entry()
87 pg_ofs += overhead; in vxfs_find_entry()
235 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_readdir() local
237 pos += overhead; in vxfs_readdir()
238 pg_ofs += overhead; in vxfs_readdir()
/openbmc/linux/net/l2tp/
H A Dl2tp_eth.c211 unsigned int overhead = 0; in l2tp_eth_adjust_mtu() local
217 overhead += sizeof(struct udphdr); in l2tp_eth_adjust_mtu()
236 overhead += session->hdr_len + ETH_HLEN + l3_overhead; in l2tp_eth_adjust_mtu()
238 mtu = l2tp_tunnel_dst_mtu(tunnel) - overhead; in l2tp_eth_adjust_mtu()
240 dev->mtu = ETH_DATA_LEN - overhead; in l2tp_eth_adjust_mtu()
/openbmc/linux/include/net/sctp/
H A Dsctp.h576 __u32 overhead = sizeof(struct sctphdr) + extra; in __sctp_mtu_payload() local
579 overhead += sp->pf->af->net_header_len; in __sctp_mtu_payload()
581 overhead += sizeof(struct udphdr); in __sctp_mtu_payload()
583 overhead += sizeof(struct ipv6hdr); in __sctp_mtu_payload()
586 if (WARN_ON_ONCE(mtu && mtu <= overhead)) in __sctp_mtu_payload()
587 mtu = overhead; in __sctp_mtu_payload()
589 return mtu ? mtu - overhead : overhead; in __sctp_mtu_payload()
/openbmc/linux/fs/ext4/
H A Dresize.c123 ext4_grpblk_t overhead; in ext4_group_overhead_blocks() local
126 overhead += 1 + in ext4_group_overhead_blocks()
128 return overhead; in ext4_group_overhead_blocks()
143 unsigned overhead; in verify_group_input() local
318 unsigned overhead; in ext4_alloc_group_tables() local
338 start_blk += overhead; in ext4_alloc_group_tables()
344 if (overhead == 0) in ext4_alloc_group_tables()
388 itb -= overhead; in ext4_alloc_group_tables()
563 ext4_grpblk_t overhead; in setup_new_flex_group_blocks() local
649 if (overhead != 0) { in setup_new_flex_group_blocks()
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/openbmc/linux/Documentation/driver-api/mmc/
H A Dmmc-async-req.rst8 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::
/openbmc/linux/net/mac80211/
H A Dairtime.c405 u32 *overhead) in ieee80211_get_rate_duration() argument
460 *overhead = 36 + (streams << 2); in ieee80211_get_rate_duration()
471 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()
/openbmc/linux/Documentation/mm/damon/
H A Dindex.rst13 - *light-weight* (the monitoring overhead is low enough to be applied online),
15 - *scalable* (the upper-bound of the overhead is in constant range regardless
/openbmc/linux/Documentation/virt/
H A Dparavirt_ops.rst25 known that the overhead of indirect call isn't very important.
29 are called frequently and are performance critical. The overhead is
/openbmc/linux/Documentation/usb/
H A Dohci.rst20 - improved robustness; bugfixes; and less overhead
30 to overhead in IRQ processing. When interrupt transfers are queued, those
/openbmc/linux/arch/riscv/
H A DKconfig.errata11 Otherwise, please say "N" here to avoid unnecessary overhead.
32 Otherwise, please say "N" here to avoid unnecessary overhead.
64 Otherwise, please say "N" here to avoid unnecessary overhead.
/openbmc/openbmc/poky/scripts/lib/wic/canned-wks/
H A Defi-bootdisk.wks.in2 …MAGE_ROOTFS}/boot --fstype=vfat --label boot --active --align 1024 --use-uuid --overhead-factor 1.1
/openbmc/linux/drivers/net/fddi/skfp/h/
H A Dsmt.h799 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
/openbmc/linux/Documentation/filesystems/ext4/
H A Dbigalloc.rst11 blocks to reduce both fragmentation and metadata overhead. The
23 also shrinking the amount of file system overhead for metadata.
/openbmc/u-boot/doc/
H A DREADME.iomux74 On a slow machine, such as MPC852T clocked at 66MHz, the overhead associated
80 Using nc as a stdin device results in even more overhead because nc_tstc()
86 In addition, the overhead associated with sending to two devices, when one of
/openbmc/linux/Documentation/translations/zh_CN/
H A Dglossary.rst31 * overhead: 开销，一般指需要消耗的计算机资源。

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