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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()
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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H A Dcount_stcx_fail.c30 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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/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()
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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/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
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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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
371 But if this option is 'false', percent values for overhead are printed i.e.
408 This option control the way to calculate overhead of filtered entries -
418 This is an original overhead and we'll filter out the first 'foo'
419 entry. The value of 'relative' would increase the overhead of 'bar'
421 current overhead (33.33%).
447 flat and folded. This option controls a way to show overhead for each callchain
464 (meaning that it assumes 100% total overhead of 'foo').
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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.
147 executed, such as a memory access bottleneck. If a function has high overhead
198 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
245 - graph: use a graph tree, displaying absolute overhead rates. (default)
274 - percent: display overhead percent (default)
282 See the `overhead calculation' section for more details. Enabled by
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/openbmc/linux/drivers/net/fddi/skfp/
H A Dess.c100 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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/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
227 overhead += sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); in sctp_packet_bundle_pad()
228 overhead += sizeof(struct sctp_sender_hb_info) + sizeof(struct sctp_pad_chunk); in sctp_packet_bundle_pad()
229 pad = sctp_make_pad(t->asoc, t->pl.probe_size - overhead); in sctp_packet_bundle_pad()
458 pkt_size = packet->overhead; in sctp_packet_pack()
465 else if (auth_len + padded + packet->overhead > in sctp_packet_pack()
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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/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
124 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
126 overhead += 1 + in ext4_group_overhead_blocks()
128 return overhead; in ext4_group_overhead_blocks()
143 unsigned overhead; in verify_group_input() local
155 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
156 metaend = start + overhead; in verify_group_input()
158 input->blocks_count - 2 - overhead - sbi->s_itb_per_group; in verify_group_input()
318 unsigned overhead; in ext4_alloc_group_tables() local
336 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
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/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/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/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/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/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/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/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/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/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 1.2
/openbmc/u-boot/drivers/ram/
H A DKconfig15 The RAM subsystem adds a small amount of overhead to the image.
24 The RAM subsystem adds a small amount of overhead to the image.

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