| /linux-5.10/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-5.10/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-5.10/tools/perf/Documentation/ |
| D | callchain-overhead-calculation.txt | 1 Overhead calculation
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:
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| D | perf-config.txt | 184 'top' means a overhead percentage which is more than 5%.
189 'medium' means a overhead percentage which has more than 0.5%.
192 'normal' means the rest of overhead percentages
360 But if this option is 'false', percent values for overhead are printed i.e.
391 This option control the way to calculate overhead of filtered entries -
395 Overhead Symbols
401 This is an original overhead and we'll filter out the first 'foo'
402 entry. The value of 'relative' would increase the overhead of 'bar'
404 current overhead (33.33%).
408 This option controls display of column headers (like 'Overhead' and 'Symbol')
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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
101 - overhead_sys: Overhead percentage of sample running in system mode
102 - overhead_us: Overhead percentage of sample running in user mode
103 - overhead_guest_sys: Overhead percentage of sample running in system mode
105 - overhead_guest_us: Overhead percentage of sample running in user mode on
110 --time-quantum (default 100ms). Specify with overhead and before it.
137 executed, such as a memory access bottleneck. If a function has high overhead
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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.
303 Alternatively one can ask for --group and then two overhead columns
381 include::callchain-overhead-calculation.txt[]
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| /linux-5.10/drivers/net/fddi/skfp/ |
| D | ess.c | 101 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
120 u_long payload, overhead ; in ess_raf_received_pack() local
258 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
260 DB_ESSN(2, "payload= %lx overhead= %lx", in ess_raf_received_pack()
261 payload, overhead); in ess_raf_received_pack()
266 (void)process_bw_alloc(smc,(long)payload,(long)overhead) ; in ess_raf_received_pack()
309 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
313 DB_ESSN(2, "payload= %lx overhead= %lx", in ess_raf_received_pack()
314 payload, overhead); in ess_raf_received_pack()
319 if(!process_bw_alloc(smc,(long)payload,(long)overhead)) in ess_raf_received_pack()
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| /linux-5.10/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()
223 /* L3 Overhead couldn't be identified, this could be in l2tp_eth_adjust_mtu()
230 /* Adjust MTU, factor overhead - underlay L3, overlay L2 hdr in l2tp_eth_adjust_mtu()
231 * UDP overhead, if any, was already factored in above. 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-5.10/tools/testing/selftests/seccomp/ |
| D | seccomp_benchmark.c | 112 printf("No overhead measured!? Try running again with more samples.\n"); in main()
122 printf("Estimated total seccomp overhead for 1 filter: %llu ns\n", in main()
125 printf("Estimated total seccomp overhead for 2 filters: %llu ns\n", in main()
128 printf("Estimated seccomp per-filter overhead: %llu ns\n", in main()
131 printf("Estimated seccomp entry overhead: %llu ns\n", in main()
|
| /linux-5.10/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()
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| /linux-5.10/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-5.10/net/sctp/ |
| D | output.c | 58 * current overhead after sending packets. in sctp_packet_reset()
60 packet->size = packet->overhead; in sctp_packet_reset()
88 /* set packet max_size with pathmtu, then calculate overhead */ in sctp_packet_config()
95 packet->overhead = sctp_mtu_payload(sp, 0, 0); in sctp_packet_config()
96 packet->size = packet->overhead; in sctp_packet_config()
152 /* The overhead will be calculated by sctp_packet_config() */ in sctp_packet_init()
153 packet->overhead = 0; in sctp_packet_init()
428 pkt_size = packet->overhead; in sctp_packet_pack()
435 else if (auth_len + padded + packet->overhead > in sctp_packet_pack()
445 skb_reserve(nskb, packet->overhead + MAX_HEADER); in sctp_packet_pack()
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| /linux-5.10/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::
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| /linux-5.10/mm/ |
| D | Kconfig.debug | 35 By default this option will have a small overhead, e.g. by not
37 architectures. Even bigger overhead comes when the debugging is
85 poison on free. This reduces some of the overhead of the
112 kernel code. However the runtime performance overhead is virtually
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| /linux-5.10/drivers/net/fddi/skfp/h/ |
| D | smt.h | 485 * P18 : SBA Overhead Request
491 int sba_ov_req ; /* total sync bandwidth req for overhead*/
801 struct smt_p_3210 overhead ; /* current SBA overhead */ member
816 struct smt_p_0018 ov_req ; /* requested SBA overhead */
818 struct smt_p_3210 overhead ; /* current SBA overhead */ member
834 struct smt_p_3210 overhead ; /* current SBA overhead */ member
856 struct smt_p_3210 overhead ; /* current SBA overhead */ member
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| D | sba.h | 84 long total_overhead ; /* Total Overhead */
92 long msg_sba_ov_req ; /* Overhead Request */
94 long msg_mib_ov ; /* Current Overhead for this Path*/
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| /linux-5.10/kernel/trace/ |
| D | Kconfig | 82 Adds a very slight overhead to tracing when enabled.
158 (the bootup default), then the overhead of the instructions is very
235 then it will not have any overhead while the stack tracer
273 (Note that kernel size and overhead increase with this option
298 (Note that kernel size and overhead increase with this option
401 When this is enabled, this adds a little more overhead to the
406 and already adds the overhead (plus a lot more).
426 Either of the above profilers adds a bit of overhead to the system.
432 No branch profiling. Branch profiling adds a bit of overhead.
445 Note: this will add a significant overhead; only turn this
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| /linux-5.10/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-5.10/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-5.10/fs/ext4/ |
| D | resize.c | 104 ext4_grpblk_t overhead; in ext4_group_overhead_blocks() local
105 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
107 overhead += 1 + in ext4_group_overhead_blocks()
109 return overhead; in ext4_group_overhead_blocks()
124 unsigned overhead; in verify_group_input() local
136 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
137 metaend = start + overhead; in verify_group_input()
139 input->blocks_count - 2 - overhead - sbi->s_itb_per_group; in verify_group_input()
291 unsigned overhead; in ext4_alloc_group_tables() local
309 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
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| /linux-5.10/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.
|
| /linux-5.10/include/net/sctp/ |
| D | sctp.h | 571 /* Calculate max payload size given a MTU, or the total overhead if
577 __u32 overhead = sizeof(struct sctphdr) + extra; in sctp_mtu_payload() local
580 overhead += sp->pf->af->net_header_len; in sctp_mtu_payload()
582 overhead += sizeof(struct ipv6hdr); in sctp_mtu_payload()
584 if (WARN_ON_ONCE(mtu && mtu <= overhead)) in sctp_mtu_payload()
585 mtu = overhead; in sctp_mtu_payload()
587 return mtu ? mtu - overhead : overhead; in sctp_mtu_payload()
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| /linux-5.10/tools/perf/util/ |
| D | color.c | 129 * We color high-overhead entries in red, mid-overhead in get_percent_color()
130 * entries in green - and keep the low overhead places in get_percent_color()
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| /linux-5.10/arch/nds32/ |
| D | Kconfig.cpu | 46 bool "hardware zero overhead loop support"
50 A set of Zero-Overhead Loop mechanism is provided to reduce the
51 instruction fetch and execution overhead of loop-control instructions.
|