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Message-ID: <Z6ypqCN_KI2gaSJ4@vaxr-BM6660-BM6360> Date: Wed, 12 Feb 2025 22:01:12 +0800 From: I Hsin Cheng <richard120310@...il.com> To: Yury Norov <yury.norov@...il.com> Cc: anshuman.khandual@....com, arnd@...db.de, linux-kernel@...r.kernel.org, jserv@...s.ncku.edu.tw, skhan@...uxfoundation.org Subject: Re: [PATCH 1/2] uapi: Refactor __GENMASK() for speed-up On Tue, Feb 11, 2025 at 01:44:18PM -0500, Yury Norov wrote: > On Tue, Feb 11, 2025 at 01:39:34PM -0500, Yury Norov wrote: > > On Wed, Feb 12, 2025 at 12:24:11AM +0800, I Hsin Cheng wrote: > > > The calculation of "((~_UL(0)) - (_UL(1) << (l)) + 1)" is to generate a > > > bitmask with "l" trailing zeroes, which is equivalent to > > > "(~_UL(0) << (l))". > > > > I used to think that GENMASK() is a compile-time macro. __GENMASK() is > > not, but it has very limited usage through the kernel, all in the uapi. > > > > > Refactor the calculation so the number of arithmetic instruction will be > > > reduced from 3 to 1. > > > > I'd like to look at it! Please share disassembly. > > > > > Signed-off-by: I Hsin Cheng <richard120310@...il.com> > > > --- > > > Test is done to show the speed-up we can get from reducing the number of > > > instruction. The test machine runs with 6.9.0-0-generic kernel on x86_64 > > > architecture with processor AMD Ryzen 7 5700X3D 8-Core Processor. > > > > So you CC arm maintainers and provide tests against x86_64. Are your > > improvements consistent for arm, power and other arches? > > > > Can you run bloat-o-meter against your change? > > Ah, sorry, overlooked you bloat-o-meter results in cover letter. > Anyways, can you provide it for each patch individually? Oh ok, let me paste them here first, I'll attach them along with v2 as well. In the section below, vmlinux_old uses old version of GENMASK() and GENMASK_ULL(), vmlinux_p1 use new version of GENMASK() and old version of GENMASK_ULL(), vmlinux_p2 use new version of GENMASK() and new version of GENMASK_ULL(). $ ./scripts/bloat-o-meter vmlinux_old vmlinux_p1 add/remove: 0/2 grow/shrink: 46/505 up/down: 464/-1717 (-1253) Function old new delta store_min_perf_pct 275 368 +93 store_hwp_dynamic_boost 138 225 +87 store_max_perf_pct 253 336 +83 rcu_exp_wait_wake 2620 2651 +31 hybrid_update_cpu_capacity_scaling 311 332 +21 cpuset_mem_spread_node 283 297 +14 perf_assign_events 901 914 +13 xt_init 297 305 +8 partition_sched_domains_locked 1126 1134 +8 srcu_torture_stats_print 534 541 +7 sock_prot_inuse_get 121 128 +7 ring_buffer_empty 271 278 +7 numa_policy_init 602 609 +7 gnet_stats_add_basic 183 190 +7 rcu_init 2383 2389 +6 amd_uncore_ctx_move 286 292 +6 vmalloc_init 1058 1062 +4 reclaim_throttle 756 760 +4 kstat_irqs_desc 118 122 +4 hidinput_connect 20926 20930 +4 dev_change_proto_down_reason 164 168 +4 cgroup_propagate_control 403 407 +4 tracing_total_entries_read 346 349 +3 remove_siblinginfo 1038 1041 +3 perf_event_init 838 841 +3 qdisc_alloc 472 474 +2 probes_profile_seq_show 387 389 +2 clocksource_verify_percpu.part 1065 1067 +2 blk_mq_init_allocated_queue 976 978 +2 __lru_add_drain_all 502 504 +2 zone_reclaimable_pages 692 693 +1 tcp_orphan_count_sum 107 108 +1 sock_inuse_get 102 103 +1 sched_balance_rq 3745 3746 +1 proc_nr_inodes 173 174 +1 percpu_ref_switch_to_atomic_rcu 375 376 +1 nr_processes 102 103 +1 netdev_refcnt_read 102 103 +1 mq_dump_class_stats 234 235 +1 mnt_get_writers 96 97 +1 mnt_get_count 99 100 +1 get_nr_inodes 106 107 +1 get_nr_dirty_inodes 153 154 +1 allow_direct_reclaim 318 319 +1 alloc_fd 376 377 +1 __is_kernel_percpu_address 177 178 +1 zoneinfo_show 823 822 -1 zhaoxin_pmu_handle_irq 772 771 -1 zhaoxin_arch_events_quirk 137 136 -1 workqueue_init 927 926 -1 wake_up_all_idle_cpus 142 141 -1 uprobe_buffer_disable 165 164 -1 update_per_cpu_data_slice_size 216 215 -1 unregister_netdevice_many_notify 2299 2298 -1 uncore_pmu_hrtimer 261 260 -1 uncore_event_cpu_offline 344 343 -1 uncore_device_to_die 163 162 -1 tsc_store_and_check_tsc_adjust 507 506 -1 tsc_restore_sched_clock_state 223 222 -1 tsc_refine_calibration_work 938 937 -1 try_to_unmap_one 2473 2472 -1 try_to_migrate_one 2166 2165 -1 trace_total_entries 192 191 -1 trace_buffered_event_enable 347 346 -1 tmigr_cpu_offline 404 403 -1 timer_list_start 159 158 -1 tick_handle_oneshot_broadcast 380 379 -1 tick_clock_notify 109 108 -1 tick_broadcast_setup_oneshot 288 287 -1 thaw_secondary_cpus 424 423 -1 tcp_sigpool_alloc_ahash 885 884 -1 tc_fill_qdisc 1125 1124 -1 sysctl_vm_numa_stat_handler 456 455 -1 sync_runqueues_membarrier_state 319 318 -1 sw_perf_event_destroy 133 132 -1 svc_create_pooled 799 798 -1 sugov_stop 141 140 -1 store_no_turbo 641 640 -1 snmp_fold_field 113 112 -1 smp_call_function_any 261 260 -1 show_stat 2323 2322 -1 setup_swap_info 235 234 -1 sched_update_numa 424 423 -1 sbitmap_init_node 498 497 -1 rto_next_cpu 137 136 -1 rtm_new_nexthop 5249 5248 -1 rt6_disable_ip 716 715 -1 relay_reset 198 197 -1 relay_flush 198 197 -1 relay_close 358 357 -1 reclaim_and_purge_vmap_areas 450 449 -1 rdmacg_resource_set_max 892 891 -1 rcu_tasks_trace_pregp_step 1143 1142 -1 rcu_spawn_gp_kthread 645 644 -1 rcu_spawn_exp_par_gp_kworker 387 386 -1 rcu_report_exp_cpu_mult 175 174 -1 rcu_barrier_tasks_generic 437 436 -1 rcu_barrier 874 873 -1 pull_dl_task 845 844 -1 pti_init 554 553 -1 print_ICs 299 298 -1 pfifo_fast_reset 349 348 -1 perf_trace_event_init 728 727 -1 perf_reboot 106 105 -1 perf_event_print_debug 1227 1226 -1 percpu_counter_set 127 126 -1 pcpu_setup_first_chunk 2020 2019 -1 pcpu_depopulate_chunk 412 411 -1 pcpu_alloc_noprof 1948 1947 -1 p4_pmu_handle_irq 631 630 -1 od_set_powersave_bias 216 215 -1 node_dev_init 189 188 -1 nh_fill_node 2439 2438 -1 nfs_show_stats 1147 1146 -1 neightbl_fill_info.constprop 1064 1063 -1 native_stop_other_cpus 455 454 -1 mm_init.isra 898 897 -1 memory_tier_late_init 1762 1761 -1 mem_init 520 519 -1 kswapd_init 110 109 -1 kmem_cache_init 369 368 -1 kcompactd_init 242 241 -1 irq_alloc_matrix 247 246 -1 ipv6_add_dev 1303 1302 -1 ipv4_mib_init_net 509 508 -1 ip_rt_init 589 588 -1 ip6_route_init 563 562 -1 iova_domain_init_rcaches 458 457 -1 iommu_put_dma_cookie 1044 1043 -1 ioc_timer_fn 4908 4907 -1 intel_pstate_driver_cleanup 223 222 -1 intel_gt_mcr_init 886 885 -1 intel_get_event_constraints 846 845 -1 intel_arch_events_quirk 137 136 -1 input_leds_connect 720 719 -1 init_sched_rt_class 101 100 -1 init_sched_dl_class 101 100 -1 init_gi_nodes 132 131 -1 inet6_net_init 644 643 -1 i915_pmu_cpu_offline 230 229 -1 hybrid_set_capacity_of_cpus 137 136 -1 housekeeping_init 124 123 -1 group_cpus_evenly 439 438 -1 gnet_stats_add_queue 213 212 -1 get_total_entries 199 198 -1 get_nohz_timer_target 317 316 -1 gen11_gt_irq_handler 924 923 -1 free_acpi_perf_data 75 74 -1 fpu__init_system_xstate 3179 3178 -1 fold_vm_zone_numa_events 232 231 -1 flow_limit_cpu_sysctl 525 524 -1 filelock_init 396 395 -1 ext4_mb_new_blocks 4028 4027 -1 elf_coredump_extra_notes_size 107 106 -1 ehci_hrtimer_func 233 232 -1 dst_cache_reset_now 163 162 -1 do_migrate_pages 807 806 -1 dm_stats_init 195 194 -1 dl_bw_cpus 136 135 -1 disable_freq_invariance_workfn 118 117 -1 default_send_IPI_mask_allbutself_phys 287 286 -1 crash_prepare_elf64_headers 566 565 -1 cpupri_init 182 181 -1 cpupri_find_fitness 416 415 -1 cpuhp_sysfs_init 265 264 -1 cpuhp_smt_disable 213 212 -1 cpuhp_rollback_install 186 185 -1 cpufreq_set_policy 801 800 -1 cpufreq_policy_free 385 384 -1 cpufreq_online 2578 2577 -1 cpufreq_notify_transition 281 280 -1 cpufreq_driver_fast_switch 207 206 -1 cpufreq_dbs_governor_start 443 442 -1 cpufreq_dbs_governor_init 681 680 -1 cpudl_init 159 158 -1 cpuacct_stats_show 380 379 -1 cpu_map_shared_cache 260 259 -1 cpu_dev_init 228 227 -1 compaction_zonelist_suitable 329 328 -1 clock_was_set 561 560 -1 cgroup_subtree_control_write 1008 1007 -1 cgroup_rstat_init 168 167 -1 cgroup_rstat_boot 105 104 -1 cgroup_post_fork 634 633 -1 cgroup_base_stat_cputime_show 760 759 -1 can_migrate_task 519 518 -1 call_function_init 171 170 -1 calibrate_delay_is_known 237 236 -1 build_all_zonelists_init 277 276 -1 bpf_prog_alloc 166 165 -1 blkg_alloc 481 480 -1 blkcg_print_stat 880 879 -1 blkcg_iolatency_done_bio 1775 1774 -1 blkcg_css_alloc 568 567 -1 blk_stat_timer_fn 378 377 -1 blk_stat_add_callback 244 243 -1 blk_mq_sysfs_deinit 123 122 -1 blk_mq_map_hw_queues 175 174 -1 blk_mq_init 358 357 -1 blk_iocost_init 620 619 -1 begin_new_exec 2857 2856 -1 asym_cpu_capacity_scan 642 641 -1 amd_uncore_umc_ctx_init 871 870 -1 amd_pstate_change_mode_without_dvr_change 133 132 -1 amd_pmu_v2_handle_irq 1053 1052 -1 alloc_iova_fast 680 679 -1 alloc_desc 492 491 -1 addrconf_disable_policy_idev 322 321 -1 add_to_avail_list 310 309 -1 acpi_cpc_valid 130 129 -1 _vm_unmap_aliases 646 645 -1 __snmp6_fill_stats64.constprop 282 281 -1 __percpu_ref_switch_mode 543 542 -1 __i915_gem_object_set_pages 547 546 -1 __ftrace_clear_event_pids 593 592 -1 __drain_swap_slots_cache 90 89 -1 __drain_all_pages 449 448 -1 __copy_xstate_to_uabi_buf 2416 2415 -1 __alloc_frozen_pages_noprof 3930 3929 -1 ___gnet_stats_copy_basic.isra 387 386 -1 zone_pcp_enable 127 125 -2 xhci_bus_resume 1011 1009 -2 xfrm_input_init 230 228 -2 xfeature_get_offset 137 135 -2 x86_release_hardware 322 320 -2 workqueue_online_cpu 750 748 -2 workqueue_offline_cpu 550 548 -2 weighted_interleave_nodes 331 329 -2 vmalloc_info_show 1000 998 -2 update_or_create_fnhe 910 908 -2 update_group_capacity 556 554 -2 tsc_init 882 880 -2 try_to_generate_entropy 629 627 -2 tracing_set_cpumask 284 282 -2 tracing_release 336 334 -2 tracing_entries_read 453 451 -2 trace_rb_cpu_prepare 213 211 -2 toggle_bp_slot.constprop 2861 2859 -2 timekeeping_get_mg_floor_swaps 111 109 -2 tcf_idr_create 639 637 -2 task_non_contending 837 835 -2 task_mm_cid_work 498 496 -2 srcu_readers_active 128 126 -2 srcu_barrier 515 513 -2 softirq_init 150 148 -2 snmp_seq_show_ipstats.isra 374 372 -2 snmp6_seq_show_item64.constprop 264 262 -2 snapshot_write_next 2486 2484 -2 snapshot_read_next 626 624 -2 smp_prepare_cpus_common 339 337 -2 skx_pmu_get_topology 313 311 -2 show_slab_objects 1071 1069 -2 show_numa_map 980 978 -2 show_interrupts 817 815 -2 shmem_cppc_enable 225 223 -2 setup_zone_pageset 327 325 -2 setup_per_cpu_pageset 266 264 -2 set_cpus_allowed_dl 276 274 -2 set_cpu_sibling_map 1693 1691 -2 set_buffer_entries 93 91 -2 seq_hlist_start_percpu 131 129 -2 seq_hlist_next_percpu 202 200 -2 send_pcc_cmd 656 654 -2 select_task_rq_fair 4420 4418 -2 scsi_show_rq 800 798 -2 schedule_on_each_cpu 335 333 -2 s_start 865 863 -2 ring_buffer_subbuf_order_set 1200 1198 -2 ring_buffer_overruns 107 105 -2 ring_buffer_entries 124 122 -2 recalc_bh_state.part 122 120 -2 rcu_gp_cleanup 1556 1554 -2 rcu_check_boost_fail 467 465 -2 rcec_assoc_rciep.isra 116 114 -2 pt_init 981 979 -2 process_srcu 1676 1674 -2 phys_package_first_cpu 122 120 -2 perf_output_sample_regs 181 179 -2 perf_event_mux_interval_ms_store 365 363 -2 percpu_is_read_locked 126 124 -2 per_cpu_ptr_to_phys 266 264 -2 part_stat_read_all 193 191 -2 part_inflight_show 308 306 -2 part_in_flight 133 131 -2 padata_do_serial 237 235 -2 padata_do_multithreaded 877 875 -2 padata_alloc_pd 482 480 -2 p4_pmu_enable_all 132 130 -2 numa_nearest_node 210 208 -2 nr_iowait 105 103 -2 nr_context_switches 112 110 -2 node_read_distance 234 232 -2 netif_get_num_default_rss_queues 157 155 -2 native_smp_cpus_done 657 655 -2 metadata_dst_alloc_percpu 370 368 -2 memcpy_count_show 176 174 -2 membarrier_global_expedited 330 328 -2 loopback_get_stats64 145 143 -2 kyber_timer_fn 599 597 -2 kvm_flush_tlb_multi 149 147 -2 kfree_rcu_shrink_count 157 155 -2 kcore_update_ram.isra 783 781 -2 iommu_dma_init_fq 450 448 -2 iolatency_pd_init 495 493 -2 interleave_nodes 166 164 -2 interleave_nid 217 215 -2 intel_pmu_init 14167 14165 -2 intel_pmu_drain_pebs_icl 866 864 -2 intel_gt_init_workarounds 4139 4137 -2 input_register_device 1348 1346 -2 init_sched_fair_class 213 211 -2 init_cpu_to_node 284 282 -2 inactive_task_timer 967 965 -2 ieee80211_sta_last_active 147 145 -2 ieee80211_rx_mgmt_beacon 5755 5753 -2 ieee80211_add_rx_radiotap_header 2267 2265 -2 idle_threads_init 181 179 -2 icl_display_core_init 2347 2345 -2 hw_breakpoint_is_used 210 208 -2 gro_cells_destroy 342 340 -2 ftrace_dump_one 731 729 -2 free_policy_dbs_info 124 122 -2 free_iova_rcaches 285 283 -2 free_area_init 4062 4060 -2 fq_flush_timeout 234 232 -2 flush_tlb_mm_range 427 425 -2 ext4_update_super 942 940 -2 ext4_mb_init 1965 1963 -2 ext4_journal_commit_callback 470 468 -2 ext4_fill_super 12856 12854 -2 drv_change_sta_links 621 619 -2 drop_slab 223 221 -2 do_ipt_set_ctl 1565 1563 -2 do_ip6t_set_ctl 1589 1587 -2 dma_channel_table_init 279 277 -2 dm_wait_for_completion 409 407 -2 dm_stats_message 4382 4380 -2 dl_cpuset_cpumask_can_shrink 268 266 -2 dl_clear_root_domain 176 174 -2 dl_add_task_root_domain 337 335 -2 dev_lstats_read 137 135 -2 dev_fetch_sw_netstats 179 177 -2 detect_cache_attributes 795 793 -2 del_gendisk 849 847 -2 default_hugepagesz_setup 454 452 -2 cpuusage_write 199 197 -2 cpuusage_user_read 120 118 -2 cpuusage_sys_read 125 123 -2 cpuusage_read 111 109 -2 cpuidle_driver_state_disabled 234 232 -2 cpufreq_show_cpus 172 170 -2 cpuacct_all_seq_show 292 290 -2 cpu_stop_init 178 176 -2 cpu_rmap_copy_neigh 140 138 -2 cpu_init_debugfs 277 275 -2 cppc_allow_fast_switch 133 131 -2 core_pmu_enable_all 399 397 -2 cleanup_srcu_struct 424 422 -2 cgroup_rstat_exit 191 189 -2 cgroup_release 302 300 -2 cgroup_exit 416 414 -2 cgroup_can_fork 1282 1280 -2 bytes_transferred_show 177 175 -2 blkcg_reset_stats 481 479 -2 blk_mq_update_queue_map 192 190 -2 blk_mq_sysfs_init 158 156 -2 blk_mq_hw_sysfs_cpus_show 289 287 -2 arch_tlbbatch_flush 248 246 -2 arch_enable_hybrid_capacity_scale 241 239 -2 apply_wqattrs_prepare 502 500 -2 apply_wqattrs_commit 408 406 -2 amd_uncore_ctx_init 516 514 -2 amd_pmu_enable_all 132 130 -2 amd_pmu_cpu_prepare 340 338 -2 amd_pmu_check_overflow 177 175 -2 amd_numa_init 901 899 -2 amd_detect_prefcore 306 304 -2 alloc_pages_bulk_mempolicy_noprof 1530 1528 -2 alloc_cpu_rmap 200 198 -2 all_vm_events 180 178 -2 ahci_reset_controller 301 299 -2 add_del_listener 565 563 -2 acpi_processor_power_state_has_changed 418 416 -2 acpi_map_cpuid 147 145 -2 acpi_get_psd_map 367 365 -2 acpi_cpufreq_probe 490 488 -2 _ieee80211_set_active_links 1341 1339 -2 __zone_set_pageset_high_and_batch 104 102 -2 __sync_rcu_exp_select_node_cpus 954 952 -2 __sched_clock_work 261 259 -2 __percpu_counter_sum 136 134 -2 __dm_stat_init_temporary_percpu_totals 443 441 -2 slabs_cpu_partial_show 326 323 -3 show_rcu_tasks_generic_gp_kthread 473 470 -3 show_free_areas 2871 2868 -3 sched_balance_trigger 923 920 -3 ring_buffer_reset_online_cpus 323 320 -3 relay_open 667 664 -3 register_netdevice 2022 2019 -3 refresh_zone_stat_thresholds 372 369 -3 rebind_subsystems 1264 1261 -3 page_alloc_init_late 754 751 -3 out_of_memory 1780 1777 -3 mgts_show 328 325 -3 init_mm_internals 689 686 -3 ieee80211_subif_start_xmit 1121 1118 -3 hugetlb_init 1602 1599 -3 hugetlb_acct_memory.part 1112 1109 -3 dm_stat_free 247 244 -3 crypto_scomp_init_tfm 261 258 -3 blk_mq_map_queues 213 210 -3 blk_mq_hw_queue_to_node 123 120 -3 amd_pmu_cpu_starting 379 376 -3 update_qos_request 250 246 -4 tracing_open 955 951 -4 snmp6_seq_show_item 369 365 -4 shrink_dcache_sb 327 323 -4 show_rcu_gp_kthreads 834 830 -4 set_pgdat_percpu_threshold 182 178 -4 select_fallback_rq 718 714 -4 sched_dl_do_global 347 343 -4 sbitmap_queue_show 405 401 -4 ring_buffer_reset 230 226 -4 rcu_tasks_kthread 191 187 -4 probe_event_enable 862 858 -4 perf_swevent_init 492 488 -4 pcpu_populate_chunk 1017 1013 -4 netstat_seq_show 717 713 -4 mce_end 651 647 -4 intel_psr_invalidate 667 663 -4 intel_pmu_cpu_starting 1706 1702 -4 intel_dp_compute_link_config 1317 1313 -4 ieee80211_vif_update_links 2562 2558 -4 hpet_open 491 487 -4 housekeeping_setup 617 613 -4 ext4_attr_show 1006 1002 -4 elf_coredump_extra_notes_write 453 449 -4 apply_wqattrs_cleanup.part 233 229 -4 zone_pcp_reset 178 173 -5 xt_free_table_info 134 129 -5 x86_pmu_enable_all 377 372 -5 wq_affn_dfl_set 253 248 -5 workqueue_init_topology 271 266 -5 try_check_zero 438 433 -5 swapfile_init 220 215 -5 start_kernel 1996 1991 -5 sta_get_last_rx_stats 124 119 -5 smpboot_register_percpu_thread 233 228 -5 ring_buffer_free 145 140 -5 release_callchain_buffers_rcu 111 106 -5 rcu_dump_cpu_stacks 433 428 -5 padata_do_parallel 532 527 -5 load_module 9704 9699 -5 kvm_alloc_cpumask 177 172 -5 kvfree_rcu_init 571 566 -5 gro_cells_init 257 252 -5 free_fair_sched_group 162 157 -5 dst_cache_destroy 141 136 -5 cpuhp_smt_enable 243 238 -5 cgroup_print_ss_mask 182 177 -5 alloc_buffer 1345 1340 -5 __list_lru_init 179 174 -5 __group_cpus_evenly 1254 1249 -5 __fib6_drop_pcpu_from.part 209 204 -5 x86_pmu_disable_all 411 405 -6 trace_empty 233 227 -6 tcp_v4_init 273 267 -6 svc_seq_show 328 322 -6 snmp_seq_show_tcp_udp.isra 942 936 -6 schedstat_next 131 125 -6 ring_buffer_wake_waiters 191 185 -6 perf_event_exit_cpu_context 600 594 -6 percpu_down_write 400 394 -6 pcpu_free_pages.isra 169 163 -6 pcpu_build_alloc_info 1307 1301 -6 packet_read_pending.isra 105 99 -6 nv_get_stats64 402 396 -6 net_dev_init 795 789 -6 kvm_smp_send_call_func_ipi 100 94 -6 irq_migrate_all_off_this_cpu 722 716 -6 intel_engines_init_mmio 3432 3426 -6 init_timers 170 164 -6 icmpv6_init 289 283 -6 dma_channel_rebalance 788 782 -6 dl_bw_manage 805 799 -6 cpufreq_dbs_governor_stop 142 136 -6 blk_mq_map_swqueue 1057 1051 -6 acpi_processor_throttling_init 788 782 -6 __percpu_counter_limited_add 481 475 -6 __do_sys_swapon 4260 4254 -6 __cpuacct_percpu_seq_show 163 157 -6 wq_update_node_max_active 529 522 -7 sysrq_timer_list_show 277 270 -7 smpboot_destroy_threads 150 143 -7 smp_call_function_many_cond 1320 1313 -7 setup_cpu_entry_areas 932 925 -7 regmap_field_init 122 115 -7 mst_stream_compute_config 1659 1652 -7 free_node_nr_active 165 158 -7 dl_server_apply_params 972 965 -7 cpu_down_maps_locked 203 196 -7 alloc_workqueue 2078 2071 -7 __is_module_percpu_address 283 276 -7 sta_set_sinfo 3014 3006 -8 show_softirqs 334 326 -8 populate_cache_leaves 1389 1381 -8 is_mddev_idle 471 463 -8 irq_matrix_reserve_managed 350 342 -8 intel_psr_flush 982 974 -8 get_callchain_buffers 414 406 -8 find_next_best_node 275 267 -8 drv_change_vif_links 635 627 -8 core_guest_get_msrs 347 339 -8 check_hw_exists 1074 1066 -8 __do_sys_swapoff 3766 3758 -8 __dl_server_attach_root 238 230 -8 x86_reserve_hardware 680 671 -9 smp_shutdown_nonboot_cpus 198 189 -9 schedstat_start 125 116 -9 do_kmem_cache_create 1252 1243 -9 cache_shared_cpu_map_remove 340 331 -9 bioset_exit 381 372 -9 reserve_ds_buffers 1595 1585 -10 hugetlb_cgroup_free 127 117 -10 flush_all_cpus_locked 349 339 -10 cpu_rmap_update 573 563 -10 compaction_proactiveness_sysctl_handler 298 288 -10 ahci_save_initial_config 1170 1160 -10 __build_all_zonelists 229 219 -10 numa_set_distance 578 567 -11 init_pod_type 588 577 -11 del_from_avail_list 220 209 -11 weighted_interleave_nid 385 373 -12 sched_dl_overflow 1326 1314 -12 rcu_sched_clock_irq 4343 4331 -12 icmp_init 286 274 -12 hugetlb_cgroup_read_numa_stat 607 595 -12 acpi_processor_preregister_performance 1174 1162 -12 sysctl_compaction_handler 196 183 -13 release_ds_buffers 310 297 -13 mempolicy_sysfs_init 664 651 -13 intel_drrs_activate 392 379 -13 cgroup_migrate_execute 1151 1138 -13 sched_init_numa 1916 1902 -14 dev_get_stats 816 802 -14 __reserve_bp_slot 679 664 -15 dl_task_timer 1511 1495 -16 __pfx_intel_pstate_update_policies 16 - -16 numa_init 729 712 -17 __acpi_processor_set_throttling 1132 1112 -20 ring_buffer_resize 1319 1292 -27 cppc_perf_ctrs_in_pcc 309 276 -33 intel_pstate_update_policies 90 - -90 Total: Before=22438085, After=22436832, chg -0.01% $ ./scripts/bloat-o-meter vmlinux_p1 vmlinux_p2 add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-16 (-16) Function old new delta cpc_write_ffh 167 166 -1 mce_read_aux 394 392 -2 __log_error 494 492 -2 cpc_read_ffh 89 85 -4 lpit_read_residency_counter_us 309 302 -7 Total: Before=22436832, After=22436816, chg -0.00% I think this is everything bloat-o-meter generated, it really contains many lines so I didn't paste everything in the cover letter, I'll paste them individually in v2. Best regards, I Hsin Cheng
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