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Message-ID: <CABi2SkXAiPXiDnhq2WsndTBe5T3D6HZ4NONwNis9gwjH3bLk-g@mail.gmail.com>
Date: Wed, 21 Aug 2024 08:21:27 -0700
From: Jeff Xu <jeffxu@...omium.org>
To: Oliver Sang <oliver.sang@...el.com>
Cc: Jeff Xu <jeffxu@...gle.com>, akpm@...ux-foundation.org, willy@...radead.org,
torvalds@...ux-foundation.org, Liam.Howlett@...cle.com,
pedro.falcato@...il.com, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org, linux-mm@...ck.org,
linux-hardening@...r.kernel.org, lorenzo.stoakes@...cle.com,
mpe@...erman.id.au, vbabka@...e.cz, keescook@...omium.org
Subject: Re: [PATCH v1 0/2] mremap refactor: check src address for vma
boundaries first.
Hi Oliver
On Tue, Aug 20, 2024 at 11:19 PM Oliver Sang <oliver.sang@...el.com> wrote:
>
> hi, Jeff,
>
> here is a update per your test request.
>
> we extented the runtime to 600 seconds, and run 10 times for each commit.
>
> =========================================================================================
> compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
> gcc-12/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-icl-2sp7/pagemove/stress-ng/***600s***
>
> commit:
> ff388fe5c4 ("mseal: wire up mseal syscall")
> 8be7258aad ("mseal: add mseal syscall")
> 2a78ece39f <-- your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm"
>
> ff388fe5c481d39c 8be7258aad44b5e25977a98db13 2a78ece39f13ea6f3f9679a6c66
> ---------------- --------------------------- ---------------------------
> %stddev %change %stddev %change %stddev
> \ | \ | \
> 1.886e+08 ą 0% -5.0% 1.792e+08 ą 0% -3.4% 1.821e+08 ą 0% stress-ng.pagemove.ops
> 314345 ą 0% -5.0% 298656 ą 0% -3.4% 303565 ą 0% stress-ng.pagemove.ops_per_sec
>
Thanks for testing with more samples.
The result is reasonable and consistent with the 60 seconds result.
The -3.4% reflects the impact from munmap, which isn't covered by this patch.
>
> the score of stress-ng.pagemove.ops_per_sec has some difference with 60s
> run (list as below for comparison). but the trend is similar.
>
> =========================================================================================
> compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
> gcc-12/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-icl-2sp7/pagemove/stress-ng/***60s***
>
> commit:
> ff388fe5c4 ("mseal: wire up mseal syscall")
> 8be7258aad ("mseal: add mseal syscall")
> 2a78ece39f <-- your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm"
>
> ff388fe5c481d39c 8be7258aad44b5e25977a98db13 2a78ece39f13ea6f3f9679a6c66
> ---------------- --------------------------- ---------------------------
> %stddev %change %stddev %change %stddev
> \ | \ | \
> 18386219 ą 0% -5.0% 17474214 ą 0% -2.9% 17850959 ą 0% stress-ng.pagemove.ops
> 306421 ą 0% -5.0% 291207 ą 0% -2.9% 297490 ą 0% stress-ng.pagemove.ops_per_sec
>
>
> since the data is stable, %stddev shows as "ą 0%" in both above tables.
> let me give out the detail data for 600s runs.
>
> for
> ff388fe5c4 ("mseal: wire up mseal syscall")
>
> "stress-ng.pagemove.ops": [
> 188545955,
> 188681834,
> 188907282,
> 188345009,
> 188729465,
> 188312187,
> 188897283,
> 188209713,
> 188425965,
> 189026136
> ],
> "stress-ng.pagemove.ops_per_sec": [
> 314242.1,
> 314467.13,
> 314841.5,
> 313907.19,
> 314548.11,
> 313852.5,
> 314827.84,
> 313680.74,
> 314042.14,
> 315042.79
> ],
>
> for
> 8be7258aad ("mseal: add mseal syscall")
>
> "stress-ng.pagemove.ops": [
> 179127848,
> 179401350,
> 179350278,
> 179023817,
> 179106624,
> 179535213,
> 178936504,
> 178870141,
> 179462171,
> 179136065
> ],
> "stress-ng.pagemove.ops_per_sec": [
> 298545.54,
> 299000.95,
> 298915.62,
> 298371.45,
> 298509.15,
> 299223.65,
> 298226.74,
> 298115.08,
> 299101.23,
> 298558.74
> ],
>
> for
> 2a78ece39f <-- your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm"
>
> "stress-ng.pagemove.ops": [
> 182188207,
> 182288813,
> 182483678,
> 181980233,
> 182249440,
> 181837961,
> 182155893,
> 181699445,
> 182347580,
> 182174597
> ],
> "stress-ng.pagemove.ops_per_sec": [
> 303643.28,
> 303814.05,
> 304138.38,
> 303298.9,
> 303747.33,
> 303060.84,
> 303592.48,
> 302831.56,
> 303909.81,
> 303622.07
> ],
>
>
> for 600s run, below is the full comparion.
>
> =========================================================================================
> compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
> gcc-12/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-icl-2sp7/pagemove/stress-ng/***600s***
>
> commit:
> ff388fe5c4 ("mseal: wire up mseal syscall")
> 8be7258aad ("mseal: add mseal syscall")
> 2a78ece39f <-- your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm"
>
> ff388fe5c481d39c 8be7258aad44b5e25977a98db13 2a78ece39f13ea6f3f9679a6c66
> ---------------- --------------------------- ---------------------------
> %stddev %change %stddev %change %stddev
> \ | \ | \
> 4667 ą 0% -2.4% 4553 ą 0% -1.6% 4593 ą 0% vmstat.system.cs
> 4.192e+08 ą 0% -4.3% 4.012e+08 ą 0% -2.8% 4.075e+08 ą 0% proc-vmstat.numa_hit
> 4.192e+08 ą 0% -4.3% 4.011e+08 ą 0% -2.8% 4.074e+08 ą 0% proc-vmstat.numa_local
> 7.843e+08 ą 0% -4.3% 7.504e+08 ą 0% -2.8% 7.623e+08 ą 0% proc-vmstat.pgalloc_normal
> 7.836e+08 ą 0% -4.3% 7.498e+08 ą 0% -2.8% 7.616e+08 ą 0% proc-vmstat.pgfree
> 1174825 ą 0% -2.6% 1143891 ą 0% -1.7% 1155336 ą 0% time.involuntary_context_switches
> 5082 ą 0% +1.3% 5147 ą 0% +0.9% 5126 ą 0% time.percent_of_cpu_this_job_got
> 29840 ą 0% +1.4% 30267 ą 0% +1.0% 30133 ą 0% time.system_time
> 663.58 ą 1% -5.7% 625.54 ą 1% -4.3% 635.17 ą 0% time.user_time
> 1.886e+08 ą 0% -5.0% 1.792e+08 ą 0% -3.4% 1.821e+08 ą 0% stress-ng.pagemove.ops
> 314345 ą 0% -5.0% 298656 ą 0% -3.4% 303565 ą 0% stress-ng.pagemove.ops_per_sec
> 212508 ą 0% -4.3% 203280 ą 0% -3.1% 205831 ą 0% stress-ng.pagemove.page_remaps_per_sec
> 1174825 ą 0% -2.6% 1143891 ą 0% -1.7% 1155336 ą 0% stress-ng.time.involuntary_context_switches
> 5082 ą 0% +1.3% 5147 ą 0% +0.9% 5126 ą 0% stress-ng.time.percent_of_cpu_this_job_got
> 29840 ą 0% +1.4% 30267 ą 0% +1.0% 30133 ą 0% stress-ng.time.system_time
> 663.58 ą 1% -5.7% 625.54 ą 1% -4.3% 635.17 ą 0% stress-ng.time.user_time
> 1.00 ą 0% -7.1% 0.93 ą 0% -4.9% 0.95 ą 0% perf-stat.i.MPKI
> 3.487e+10 ą 0% +3.5% 3.607e+10 ą 0% +2.4% 3.57e+10 ą 0% perf-stat.i.branch-instructions
> 0.21 ą 0% -0.0 0.19 ą 3% -0.0 0.20 ą 0% perf-stat.i.branch-miss-rate%
> 1.763e+08 ą 0% -5.0% 1.675e+08 ą 0% -3.4% 1.704e+08 ą 0% perf-stat.i.cache-misses
> 2.342e+08 ą 0% -4.9% 2.228e+08 ą 0% -3.3% 2.264e+08 ą 0% perf-stat.i.cache-references
> 4650 ą 0% -2.4% 4537 ą 0% -1.5% 4578 ą 0% perf-stat.i.context-switches
> 1.11 ą 0% -2.2% 1.09 ą 0% -1.6% 1.10 ą 0% perf-stat.i.cpi
> 172.66 ą 0% -2.8% 167.77 ą 0% -1.8% 169.52 ą 0% perf-stat.i.cpu-migrations
> 1121 ą 0% +5.2% 1180 ą 0% +3.5% 1160 ą 0% perf-stat.i.cycles-between-cache-misses
> 1.772e+11 ą 0% +2.2% 1.812e+11 ą 0% +1.6% 1.801e+11 ą 0% perf-stat.i.instructions
> 0.90 ą 0% +2.3% 0.92 ą 0% +1.6% 0.91 ą 0% perf-stat.i.ipc
> 0.99 ą 0% -7.1% 0.92 ą 0% -4.9% 0.95 ą 0% perf-stat.overall.MPKI
> 0.21 ą 0% -0.0 0.19 ą 3% -0.0 0.20 ą 0% perf-stat.overall.branch-miss-rate%
> 1.11 ą 0% -2.2% 1.09 ą 0% -1.6% 1.10 ą 0% perf-stat.overall.cpi
> 1120 ą 0% +5.2% 1179 ą 0% +3.5% 1159 ą 0% perf-stat.overall.cycles-between-cache-misses
> 0.90 ą 0% +2.3% 0.92 ą 0% +1.6% 0.91 ą 0% perf-stat.overall.ipc
> 3.48e+10 ą 0% +3.5% 3.6e+10 ą 0% +2.4% 3.563e+10 ą 0% perf-stat.ps.branch-instructions
> 1.759e+08 ą 0% -5.0% 1.672e+08 ą 0% -3.4% 1.7e+08 ą 0% perf-stat.ps.cache-misses
> 2.338e+08 ą 0% -4.9% 2.224e+08 ą 0% -3.3% 2.26e+08 ą 0% perf-stat.ps.cache-references
> 4642 ą 0% -2.4% 4529 ą 0% -1.5% 4570 ą 0% perf-stat.ps.context-switches
> 172.30 ą 0% -2.8% 167.43 ą 0% -1.8% 169.17 ą 0% perf-stat.ps.cpu-migrations
> 1.769e+11 ą 0% +2.3% 1.808e+11 ą 0% +1.6% 1.797e+11 ą 0% perf-stat.ps.instructions
> 1.063e+14 ą 0% +2.3% 1.087e+14 ą 0% +1.7% 1.081e+14 ą 0% perf-stat.total.instructions
> 74.86 ą 0% -2.1 72.76 ą 0% -0.8 74.06 ą 0% perf-profile.calltrace.cycles-pp.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 36.72 ą 0% -1.7 35.04 ą 0% -1.2 35.54 ą 0% perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> 24.93 ą 0% -1.4 23.54 ą 0% -0.8 24.12 ą 0% perf-profile.calltrace.cycles-pp.copy_vma.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 19.91 ą 0% -1.1 18.79 ą 0% -0.7 19.17 ą 0% perf-profile.calltrace.cycles-pp.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 14.71 ą 0% -0.8 13.90 ą 0% -0.4 14.30 ą 0% perf-profile.calltrace.cycles-pp.vma_merge.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> 10.82 ą 2% -0.6 10.22 ą 2% -0.6 10.25 ą 2% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 10.81 ą 2% -0.6 10.21 ą 2% -0.6 10.24 ą 2% perf-profile.calltrace.cycles-pp.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 10.81 ą 2% -0.6 10.21 ą 2% -0.6 10.24 ą 2% perf-profile.calltrace.cycles-pp.handle_softirqs.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
> 10.80 ą 2% -0.6 10.21 ą 2% -0.6 10.23 ą 2% perf-profile.calltrace.cycles-pp.rcu_core.handle_softirqs.run_ksoftirqd.smpboot_thread_fn.kthread
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork.ret_from_fork_asm
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.calltrace.cycles-pp.ret_from_fork.ret_from_fork_asm
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.calltrace.cycles-pp.ret_from_fork_asm
> 10.76 ą 2% -0.6 10.17 ą 2% -0.6 10.20 ą 2% perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.handle_softirqs.run_ksoftirqd.smpboot_thread_fn
> 1.49 ą 1% -0.5 0.98 ą 0% -0.5 1.00 ą 0% perf-profile.calltrace.cycles-pp.mas_find.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> 7.86 ą 0% -0.4 7.48 ą 0% -0.3 7.59 ą 0% perf-profile.calltrace.cycles-pp.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 6.72 ą 0% -0.4 6.37 ą 0% -0.2 6.49 ą 0% perf-profile.calltrace.cycles-pp.vm_area_dup.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 6.06 ą 2% -0.3 5.71 ą 2% -0.3 5.73 ą 2% perf-profile.calltrace.cycles-pp.kmem_cache_free.rcu_do_batch.rcu_core.handle_softirqs.run_ksoftirqd
> 6.11 ą 0% -0.3 5.77 ą 0% -0.2 5.90 ą 0% perf-profile.calltrace.cycles-pp.vma_complete.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 6.11 ą 0% -0.3 5.78 ą 1% -0.2 5.90 ą 0% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> 5.50 ą 0% -0.3 5.19 ą 0% -0.2 5.31 ą 0% perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_complete.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> 5.52 ą 0% -0.3 5.22 ą 0% -0.2 5.35 ą 0% perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 5.15 ą 0% -0.3 4.86 ą 0% -0.2 4.97 ą 0% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_complete.__split_vma.do_vmi_align_munmap
> 5.77 ą 0% -0.3 5.48 ą 0% -0.2 5.58 ą 0% perf-profile.calltrace.cycles-pp.move_ptes.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64
> 5.16 ą 0% -0.3 4.88 ą 0% -0.1 5.01 ą 0% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_merge.copy_vma.move_vma
> 4.72 ą 2% -0.3 4.44 ą 2% -0.3 4.45 ą 2% perf-profile.calltrace.cycles-pp.__slab_free.kmem_cache_free.rcu_do_batch.rcu_core.handle_softirqs
> 4.64 ą 0% -0.3 4.38 ą 0% -0.1 4.51 ą 1% perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_merge.copy_vma
> 4.07 ą 0% -0.2 3.84 ą 0% -0.2 3.92 ą 0% perf-profile.calltrace.cycles-pp.vm_area_dup.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> 3.96 ą 1% -0.2 3.76 ą 1% -0.1 3.88 ą 1% perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_complete.__split_vma
> 3.54 ą 0% -0.2 3.34 ą 0% -0.1 3.41 ą 1% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.vm_area_dup.copy_vma.move_vma.__do_sys_mremap
> 38.68 ą 0% -0.2 38.49 ą 0% +0.4 39.05 ą 0% perf-profile.calltrace.cycles-pp.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.55 ą 1% -0.2 0.36 ą 65% -0.0 0.52 ą 1% perf-profile.calltrace.cycles-pp.mas_find.find_vma_prev.copy_vma.move_vma.__do_sys_mremap
> 3.41 ą 0% -0.2 3.22 ą 0% -0.1 3.28 ą 0% perf-profile.calltrace.cycles-pp.flush_tlb_mm_range.move_ptes.move_page_tables.move_vma.__do_sys_mremap
> 1.35 ą 0% -0.2 1.17 ą 0% -0.1 1.23 ą 0% perf-profile.calltrace.cycles-pp.mas_find.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap
> 2.22 ą 0% -0.2 2.05 ą 0% -0.1 2.12 ą 0% perf-profile.calltrace.cycles-pp.find_vma_prev.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> 2.27 ą 0% -0.2 2.10 ą 0% -0.1 2.15 ą 0% perf-profile.calltrace.cycles-pp.mas_preallocate.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 3.25 ą 0% -0.2 3.08 ą 0% -0.1 3.14 ą 0% perf-profile.calltrace.cycles-pp.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 3.12 ą 2% -0.2 2.97 ą 2% -0.1 3.04 ą 2% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap
> 0.96 ą 0% -0.1 0.82 ą 1% -0.1 0.87 ą 1% perf-profile.calltrace.cycles-pp.mas_walk.mas_find.do_vmi_munmap.do_munmap.mremap_to
> 2.98 ą 1% -0.1 2.84 ą 1% -0.1 2.89 ą 2% perf-profile.calltrace.cycles-pp.anon_vma_clone.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 8.19 ą 0% -0.1 8.05 ą 0% -0.1 8.04 ą 0% perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 3.13 ą 0% -0.1 3.00 ą 0% -0.1 3.06 ą 0% perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 0.53 ą 1% -0.1 0.41 ą 50% -0.2 0.30 ą 81% perf-profile.calltrace.cycles-pp.arch_get_unmapped_area_topdown_vmflags.thp_get_unmapped_area_vmflags.__get_unmapped_area.mremap_to.__do_sys_mremap
> 1.73 ą 2% -0.1 1.61 ą 2% -0.0 1.70 ą 3% perf-profile.calltrace.cycles-pp.vma_prepare.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 2.14 ą 2% -0.1 2.02 ą 2% -0.0 2.09 ą 2% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.anon_vma_clone.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> 2.46 ą 0% -0.1 2.34 ą 0% -0.1 2.38 ą 0% perf-profile.calltrace.cycles-pp.flush_tlb_func.flush_tlb_mm_range.move_ptes.move_page_tables.move_vma
> 2.04 ą 0% -0.1 1.93 ą 0% -0.1 1.96 ą 0% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 1.85 ą 0% -0.1 1.74 ą 0% -0.1 1.78 ą 0% perf-profile.calltrace.cycles-pp.vma_link.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> 2.22 ą 0% -0.1 2.12 ą 0% -0.1 2.15 ą 0% perf-profile.calltrace.cycles-pp.native_flush_tlb_one_user.flush_tlb_func.flush_tlb_mm_range.move_ptes.move_page_tables
> 1.40 ą 0% -0.1 1.30 ą 0% -0.1 1.33 ą 0% perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> 0.56 ą 1% -0.1 0.46 ą 33% -0.0 0.54 ą 2% perf-profile.calltrace.cycles-pp.mas_walk.mas_prev_setup.mas_prev.vma_merge.copy_vma
> 1.80 ą 2% -0.1 1.70 ą 2% -0.1 1.74 ą 2% perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.copy_vma.move_vma
> 2.43 ą 0% -0.1 2.33 ą 0% -0.1 2.37 ą 0% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
> 1.25 ą 0% -0.1 1.15 ą 1% -0.1 1.19 ą 0% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma.do_vmi_align_munmap
> 0.94 ą 1% -0.1 0.86 ą 0% -0.1 0.87 ą 0% perf-profile.calltrace.cycles-pp.mas_walk.mas_find.do_vmi_munmap.move_vma.__do_sys_mremap
> 1.38 ą 0% -0.1 1.30 ą 0% -0.1 1.33 ą 1% perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.vma_merge.copy_vma.move_vma
> 1.22 ą 0% -0.1 1.14 ą 0% -0.1 1.17 ą 1% perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.vma_merge.copy_vma
> 1.28 ą 0% -0.1 1.21 ą 0% -0.0 1.23 ą 0% perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 1.54 ą 1% -0.1 1.46 ą 0% -0.0 1.49 ą 0% perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
> 1.15 ą 0% -0.1 1.08 ą 1% -0.1 1.09 ą 0% perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap
> 0.73 ą 1% -0.1 0.67 ą 1% -0.0 0.69 ą 1% perf-profile.calltrace.cycles-pp.mas_walk.find_vma_prev.copy_vma.move_vma.__do_sys_mremap
> 0.72 ą 0% -0.1 0.66 ą 1% -0.0 0.69 ą 1% perf-profile.calltrace.cycles-pp.mas_prev.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 1.64 ą 1% -0.1 1.58 ą 0% -0.1 1.58 ą 0% perf-profile.calltrace.cycles-pp.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.78 ą 1% -0.1 0.72 ą 1% -0.0 0.75 ą 1% perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
> 0.63 ą 1% -0.1 0.57 ą 1% -0.0 0.60 ą 1% perf-profile.calltrace.cycles-pp.mas_prev_setup.mas_prev.vma_merge.copy_vma.move_vma
> 0.69 ą 2% -0.1 0.63 ą 4% -0.0 0.66 ą 2% perf-profile.calltrace.cycles-pp.mod_objcg_state.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.copy_vma
> 0.60 ą 1% -0.1 0.54 ą 1% -0.0 0.58 ą 1% perf-profile.calltrace.cycles-pp.security_mmap_addr.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64
> 0.79 ą 2% -0.1 0.74 ą 3% -0.0 0.75 ą 2% perf-profile.calltrace.cycles-pp.__call_rcu_common.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_merge
> 1.12 ą 0% -0.0 1.08 ą 0% -0.0 1.09 ą 1% perf-profile.calltrace.cycles-pp.clear_bhb_loop.mremap
> 0.67 ą 1% -0.0 0.62 ą 1% -0.0 0.63 ą 1% perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 0.77 ą 1% -0.0 0.72 ą 1% -0.0 0.73 ą 1% perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.vma_merge
> 1.01 ą 1% -0.0 0.96 ą 0% -0.0 0.98 ą 0% perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
> 0.86 ą 0% -0.0 0.81 ą 1% -0.0 0.83 ą 1% perf-profile.calltrace.cycles-pp.mtree_load.vma_to_resize.mremap_to.__do_sys_mremap.do_syscall_64
> 0.82 ą 1% -0.0 0.78 ą 1% -0.0 0.79 ą 1% perf-profile.calltrace.cycles-pp.mtree_load.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 1.01 ą 0% -0.0 0.97 ą 0% -0.0 0.98 ą 0% perf-profile.calltrace.cycles-pp.vma_to_resize.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.98 ą 1% -0.0 0.94 ą 0% -0.0 0.94 ą 1% perf-profile.calltrace.cycles-pp.mas_find.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 0.78 ą 0% -0.0 0.74 ą 1% -0.0 0.75 ą 1% perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_link.copy_vma.move_vma.__do_sys_mremap
> 0.68 ą 0% -0.0 0.64 ą 1% -0.0 0.65 ą 0% perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.copy_vma.move_vma
> 0.68 ą 1% -0.0 0.64 ą 1% -0.0 0.64 ą 1% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_link.copy_vma.move_vma.__do_sys_mremap
> 0.89 ą 1% -0.0 0.85 ą 1% -0.0 0.86 ą 1% perf-profile.calltrace.cycles-pp.mtree_load.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 0.62 ą 1% -0.0 0.58 ą 2% -0.0 0.59 ą 1% perf-profile.calltrace.cycles-pp.get_old_pud.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64
> 0.62 ą 1% -0.0 0.58 ą 1% -0.0 0.59 ą 1% perf-profile.calltrace.cycles-pp.mas_prev_slot.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 0.76 ą 1% -0.0 0.72 ą 1% -0.0 0.73 ą 1% perf-profile.calltrace.cycles-pp.allocate_slab.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.__split_vma
> 1.01 ą 0% -0.0 0.97 ą 1% -0.0 0.98 ą 1% perf-profile.calltrace.cycles-pp.mt_find.vma_merge.copy_vma.move_vma.__do_sys_mremap
> 0.64 ą 1% -0.0 0.60 ą 1% -0.0 0.61 ą 1% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma
> 0.88 ą 1% -0.0 0.85 ą 0% -0.0 0.85 ą 0% perf-profile.calltrace.cycles-pp.userfaultfd_unmap_complete.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 0.69 ą 1% -0.0 0.66 ą 1% -0.0 0.67 ą 0% perf-profile.calltrace.cycles-pp.__call_rcu_common.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> 0.59 ą 1% -0.0 0.56 ą 1% -0.0 0.56 ą 0% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.mremap
> 0.82 ą 1% -0.0 0.82 ą 1% -0.0 0.79 ą 1% perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64
> 0.76 ą 1% +0.1 0.83 ą 0% +0.1 0.84 ą 0% perf-profile.calltrace.cycles-pp.__madvise
> 0.67 ą 1% +0.1 0.73 ą 1% +0.1 0.75 ą 1% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__madvise
> 0.63 ą 1% +0.1 0.70 ą 1% +0.1 0.71 ą 0% perf-profile.calltrace.cycles-pp.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> 0.62 ą 1% +0.1 0.69 ą 1% +0.1 0.71 ą 0% perf-profile.calltrace.cycles-pp.do_madvise.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> 0.66 ą 1% +0.1 0.73 ą 1% +0.1 0.74 ą 0% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> 87.57 ą 0% +0.6 88.14 ą 0% +0.5 88.09 ą 0% perf-profile.calltrace.cycles-pp.mremap
> 84.74 ą 0% +0.7 85.47 ą 0% +0.6 85.37 ą 0% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.mremap
> 84.58 ą 0% +0.7 85.32 ą 0% +0.6 85.22 ą 0% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 83.64 ą 0% +0.8 84.41 ą 0% +0.7 84.30 ą 0% perf-profile.calltrace.cycles-pp.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 0.00 ą -1% +0.9 0.86 ą 0% +0.9 0.92 ą 0% perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.do_vmi_munmap.do_munmap
> 0.00 ą -1% +0.9 0.87 ą 0% +0.0 0.00 ą -1% perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.mremap_to.__do_sys_mremap
> 0.00 ą -1% +0.9 0.91 ą 2% +0.9 0.92 ą 1% perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.do_vmi_munmap.move_vma
> 0.00 ą -1% +1.1 1.09 ą 0% +0.0 0.00 ą -1% perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.mremap_to.__do_sys_mremap.do_syscall_64
> 0.00 ą -1% +1.2 1.21 ą 0% +1.3 1.29 ą 0% perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.do_vmi_munmap.do_munmap.mremap_to
> 2.10 ą 0% +1.5 3.61 ą 0% +1.7 3.79 ą 0% perf-profile.calltrace.cycles-pp.do_munmap.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.00 ą -1% +1.5 1.51 ą 1% +1.5 1.52 ą 0% perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.do_vmi_munmap.move_vma.__do_sys_mremap
> 1.60 ą 0% +1.5 3.13 ą 0% +1.7 3.31 ą 0% perf-profile.calltrace.cycles-pp.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap.do_syscall_64
> 0.00 ą -1% +1.6 1.60 ą 0% +0.0 0.00 ą -1% perf-profile.calltrace.cycles-pp.can_modify_mm.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 0.00 ą -1% +1.7 1.73 ą 0% +1.8 1.84 ą 0% perf-profile.calltrace.cycles-pp.can_modify_mm.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap
> 0.00 ą -1% +2.0 2.00 ą 1% +2.0 2.04 ą 0% perf-profile.calltrace.cycles-pp.can_modify_mm.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> 5.35 ą 0% +3.0 8.37 ą 0% +1.6 6.92 ą 0% perf-profile.calltrace.cycles-pp.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> 75.03 ą 0% -2.1 72.92 ą 0% -0.8 74.22 ą 0% perf-profile.children.cycles-pp.move_vma
> 36.94 ą 0% -1.7 35.25 ą 0% -1.2 35.75 ą 0% perf-profile.children.cycles-pp.do_vmi_align_munmap
> 25.01 ą 0% -1.4 23.61 ą 0% -0.8 24.19 ą 0% perf-profile.children.cycles-pp.copy_vma
> 20.00 ą 0% -1.1 18.88 ą 0% -0.7 19.26 ą 0% perf-profile.children.cycles-pp.__split_vma
> 19.92 ą 0% -1.1 18.84 ą 0% -0.8 19.14 ą 0% perf-profile.children.cycles-pp.handle_softirqs
> 19.90 ą 0% -1.1 18.82 ą 0% -0.8 19.12 ą 0% perf-profile.children.cycles-pp.rcu_core
> 19.88 ą 0% -1.1 18.80 ą 0% -0.8 19.10 ą 0% perf-profile.children.cycles-pp.rcu_do_batch
> 17.57 ą 0% -0.9 16.66 ą 0% -0.6 16.94 ą 0% perf-profile.children.cycles-pp.kmem_cache_free
> 15.29 ą 0% -0.9 14.43 ą 0% -0.5 14.75 ą 0% perf-profile.children.cycles-pp.kmem_cache_alloc_noprof
> 15.11 ą 0% -0.8 14.27 ą 0% -0.4 14.68 ą 0% perf-profile.children.cycles-pp.vma_merge
> 12.15 ą 0% -0.7 11.46 ą 0% -0.5 11.65 ą 0% perf-profile.children.cycles-pp.__slab_free
> 12.11 ą 0% -0.7 11.43 ą 0% -0.4 11.71 ą 0% perf-profile.children.cycles-pp.mas_wr_store_entry
> 11.90 ą 0% -0.7 11.24 ą 0% -0.4 11.50 ą 0% perf-profile.children.cycles-pp.mas_store_prealloc
> 10.82 ą 2% -0.6 10.22 ą 2% -0.6 10.25 ą 2% perf-profile.children.cycles-pp.smpboot_thread_fn
> 10.81 ą 2% -0.6 10.21 ą 2% -0.6 10.24 ą 2% perf-profile.children.cycles-pp.run_ksoftirqd
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.children.cycles-pp.kthread
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.children.cycles-pp.ret_from_fork
> 10.85 ą 2% -0.6 10.26 ą 2% -0.6 10.28 ą 2% perf-profile.children.cycles-pp.ret_from_fork_asm
> 10.85 ą 0% -0.6 10.26 ą 0% -0.4 10.47 ą 0% perf-profile.children.cycles-pp.vm_area_dup
> 9.81 ą 0% -0.5 9.28 ą 0% -0.3 9.52 ą 0% perf-profile.children.cycles-pp.mas_wr_node_store
> 8.38 ą 1% -0.5 7.90 ą 1% -0.2 8.13 ą 1% perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
> 7.98 ą 0% -0.4 7.58 ą 0% -0.3 7.70 ą 0% perf-profile.children.cycles-pp.move_page_tables
> 6.66 ą 0% -0.4 6.29 ą 0% -0.2 6.43 ą 0% perf-profile.children.cycles-pp.vma_complete
> 5.12 ą 0% -0.3 4.79 ą 0% -0.2 4.88 ą 0% perf-profile.children.cycles-pp.mas_preallocate
> 6.05 ą 0% -0.3 5.72 ą 0% -0.2 5.82 ą 0% perf-profile.children.cycles-pp.vm_area_free_rcu_cb
> 5.85 ą 0% -0.3 5.56 ą 0% -0.2 5.66 ą 0% perf-profile.children.cycles-pp.move_ptes
> 3.51 ą 1% -0.2 3.28 ą 2% -0.1 3.37 ą 1% perf-profile.children.cycles-pp.mod_objcg_state
> 3.45 ą 0% -0.2 3.24 ą 0% -0.2 3.30 ą 0% perf-profile.children.cycles-pp.___slab_alloc
> 2.91 ą 0% -0.2 2.71 ą 0% -0.1 2.78 ą 0% perf-profile.children.cycles-pp.mas_alloc_nodes
> 3.47 ą 0% -0.2 3.27 ą 0% -0.1 3.34 ą 0% perf-profile.children.cycles-pp.flush_tlb_mm_range
> 3.43 ą 1% -0.2 3.24 ą 1% -0.1 3.35 ą 2% perf-profile.children.cycles-pp.down_write
> 2.44 ą 0% -0.2 2.25 ą 0% -0.1 2.32 ą 0% perf-profile.children.cycles-pp.find_vma_prev
> 4.24 ą 1% -0.2 4.06 ą 1% -0.1 4.11 ą 1% perf-profile.children.cycles-pp.anon_vma_clone
> 3.35 ą 0% -0.2 3.18 ą 0% -0.1 3.24 ą 0% perf-profile.children.cycles-pp.mas_store_gfp
> 2.21 ą 1% -0.2 2.05 ą 0% -0.1 2.10 ą 0% perf-profile.children.cycles-pp.__cond_resched
> 3.32 ą 0% -0.2 3.17 ą 1% -0.1 3.24 ą 0% perf-profile.children.cycles-pp.__memcg_slab_free_hook
> 8.26 ą 0% -0.1 8.12 ą 0% -0.1 8.11 ą 0% perf-profile.children.cycles-pp.unmap_region
> 2.22 ą 1% -0.1 2.08 ą 1% -0.1 2.16 ą 3% perf-profile.children.cycles-pp.vma_prepare
> 2.67 ą 0% -0.1 2.54 ą 0% -0.1 2.58 ą 0% perf-profile.children.cycles-pp.mtree_load
> 3.18 ą 0% -0.1 3.05 ą 0% -0.1 3.11 ą 0% perf-profile.children.cycles-pp.unmap_vmas
> 2.46 ą 0% -0.1 2.34 ą 0% -0.1 2.38 ą 0% perf-profile.children.cycles-pp.rcu_cblist_dequeue
> 2.50 ą 0% -0.1 2.39 ą 0% -0.1 2.43 ą 0% perf-profile.children.cycles-pp.flush_tlb_func
> 2.11 ą 1% -0.1 2.00 ą 1% -0.1 2.02 ą 1% perf-profile.children.cycles-pp.__call_rcu_common
> 2.04 ą 1% -0.1 1.93 ą 1% -0.1 1.95 ą 1% perf-profile.children.cycles-pp.allocate_slab
> 1.77 ą 1% -0.1 1.66 ą 0% -0.1 1.69 ą 1% perf-profile.children.cycles-pp.mas_wr_walk
> 1.87 ą 0% -0.1 1.77 ą 0% -0.1 1.80 ą 0% perf-profile.children.cycles-pp.vma_link
> 2.24 ą 0% -0.1 2.13 ą 0% -0.1 2.17 ą 0% perf-profile.children.cycles-pp.native_flush_tlb_one_user
> 1.85 ą 1% -0.1 1.74 ą 0% -0.1 1.79 ą 2% perf-profile.children.cycles-pp.up_write
> 2.48 ą 0% -0.1 2.38 ą 0% -0.1 2.42 ą 0% perf-profile.children.cycles-pp.unmap_page_range
> 0.97 ą 2% -0.1 0.88 ą 1% -0.1 0.90 ą 1% perf-profile.children.cycles-pp.rcu_all_qs
> 1.04 ą 0% -0.1 0.95 ą 1% -0.0 0.99 ą 1% perf-profile.children.cycles-pp.mas_prev
> 1.24 ą 0% -0.1 1.16 ą 0% -0.1 1.19 ą 0% perf-profile.children.cycles-pp.mas_prev_slot
> 0.93 ą 0% -0.1 0.85 ą 1% -0.0 0.88 ą 1% perf-profile.children.cycles-pp.mas_prev_setup
> 1.39 ą 1% -0.1 1.31 ą 1% -0.1 1.33 ą 1% perf-profile.children.cycles-pp.shuffle_freelist
> 1.52 ą 0% -0.1 1.45 ą 0% -0.0 1.48 ą 0% perf-profile.children.cycles-pp.mas_update_gap
> 1.58 ą 1% -0.1 1.50 ą 0% -0.0 1.53 ą 0% perf-profile.children.cycles-pp.zap_pmd_range
> 0.87 ą 1% -0.1 0.80 ą 0% -0.1 0.82 ą 1% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> 1.68 ą 1% -0.1 1.62 ą 0% -0.1 1.62 ą 0% perf-profile.children.cycles-pp.__get_unmapped_area
> 0.90 ą 1% -0.1 0.84 ą 0% -0.0 0.86 ą 1% perf-profile.children.cycles-pp.percpu_counter_add_batch
> 0.62 ą 1% -0.1 0.56 ą 1% -0.0 0.60 ą 1% perf-profile.children.cycles-pp.security_mmap_addr
> 0.49 ą 1% -0.1 0.44 ą 1% -0.1 0.44 ą 1% perf-profile.children.cycles-pp.setup_object
> 1.02 ą 0% -0.1 0.97 ą 1% -0.0 0.99 ą 0% perf-profile.children.cycles-pp.mas_leaf_max_gap
> 0.98 ą 1% -0.0 0.93 ą 1% -0.0 0.94 ą 1% perf-profile.children.cycles-pp.mas_pop_node
> 1.22 ą 1% -0.0 1.18 ą 1% -0.0 1.19 ą 1% perf-profile.children.cycles-pp.__pte_offset_map_lock
> 0.45 ą 2% -0.0 0.40 ą 2% -0.0 0.41 ą 1% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> 1.18 ą 0% -0.0 1.13 ą 0% -0.0 1.15 ą 1% perf-profile.children.cycles-pp.clear_bhb_loop
> 1.08 ą 1% -0.0 1.03 ą 0% -0.0 1.05 ą 0% perf-profile.children.cycles-pp.zap_pte_range
> 1.04 ą 0% -0.0 1.00 ą 0% -0.0 1.01 ą 0% perf-profile.children.cycles-pp.vma_to_resize
> 0.58 ą 1% -0.0 0.53 ą 1% -0.0 0.54 ą 1% perf-profile.children.cycles-pp.mas_wr_end_piv
> 0.34 ą 2% -0.0 0.30 ą 5% -0.0 0.31 ą 4% perf-profile.children.cycles-pp.get_partial_node
> 0.64 ą 1% -0.0 0.61 ą 2% -0.0 0.61 ą 1% perf-profile.children.cycles-pp.get_old_pud
> 0.62 ą 0% -0.0 0.59 ą 0% -0.0 0.59 ą 1% perf-profile.children.cycles-pp.__put_partials
> 1.14 ą 0% -0.0 1.10 ą 1% -0.0 1.12 ą 1% perf-profile.children.cycles-pp.mt_find
> 0.90 ą 0% -0.0 0.87 ą 0% -0.0 0.87 ą 0% perf-profile.children.cycles-pp.userfaultfd_unmap_complete
> 0.61 ą 1% -0.0 0.58 ą 1% -0.0 0.59 ą 0% perf-profile.children.cycles-pp.entry_SYSCALL_64
> 0.32 ą 2% -0.0 0.29 ą 3% -0.0 0.30 ą 4% perf-profile.children.cycles-pp.security_vm_enough_memory_mm
> 0.54 ą 1% -0.0 0.52 ą 1% -0.0 0.52 ą 1% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown_vmflags
> 0.55 ą 1% -0.0 0.52 ą 1% -0.0 0.54 ą 1% perf-profile.children.cycles-pp.refill_obj_stock
> 0.45 ą 1% -0.0 0.43 ą 2% -0.0 0.43 ą 2% perf-profile.children.cycles-pp.__alloc_pages_noprof
> 0.43 ą 1% -0.0 0.41 ą 2% -0.0 0.41 ą 2% perf-profile.children.cycles-pp.get_page_from_freelist
> 0.17 ą 1% -0.0 0.15 ą 3% -0.0 0.16 ą 1% perf-profile.children.cycles-pp.get_any_partial
> 0.32 ą 1% -0.0 0.30 ą 1% -0.0 0.30 ą 1% perf-profile.children.cycles-pp.pte_offset_map_nolock
> 0.40 ą 0% -0.0 0.38 ą 1% -0.0 0.39 ą 1% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
> 0.28 ą 2% -0.0 0.26 ą 2% -0.0 0.27 ą 1% perf-profile.children.cycles-pp.khugepaged_enter_vma
> 0.32 ą 1% -0.0 0.30 ą 1% -0.0 0.30 ą 2% perf-profile.children.cycles-pp.mas_wr_store_setup
> 0.19 ą 4% -0.0 0.17 ą 4% -0.0 0.18 ą 6% perf-profile.children.cycles-pp.cap_vm_enough_memory
> 0.29 ą 1% -0.0 0.27 ą 2% -0.0 0.28 ą 3% perf-profile.children.cycles-pp.tlb_gather_mmu
> 0.09 ą 4% -0.0 0.07 ą 6% -0.0 0.08 ą 5% perf-profile.children.cycles-pp.vma_dup_policy
> 0.16 ą 3% -0.0 0.14 ą 2% -0.0 0.14 ą 2% perf-profile.children.cycles-pp.mas_wr_append
> 0.22 ą 2% -0.0 0.20 ą 3% -0.0 0.20 ą 3% perf-profile.children.cycles-pp.__rmqueue_pcplist
> 0.20 ą 2% -0.0 0.18 ą 2% -0.0 0.19 ą 3% perf-profile.children.cycles-pp.__thp_vma_allowable_orders
> 0.24 ą 2% -0.0 0.23 ą 2% -0.0 0.23 ą 2% perf-profile.children.cycles-pp.free_pcppages_bulk
> 0.44 ą 1% +0.0 0.45 ą 1% +0.0 0.46 ą 1% perf-profile.children.cycles-pp.mremap_userfaultfd_prep
> 0.85 ą 1% +0.0 0.85 ą 1% -0.0 0.81 ą 1% perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags
> 0.13 ą 3% +0.0 0.14 ą 3% +0.0 0.15 ą 2% perf-profile.children.cycles-pp.free_pgd_range
> 0.08 ą 8% +0.0 0.10 ą 3% -0.0 0.08 ą 6% perf-profile.children.cycles-pp.mm_get_unmapped_area_vmflags
> 0.78 ą 1% +0.1 0.84 ą 0% +0.1 0.86 ą 0% perf-profile.children.cycles-pp.__madvise
> 0.63 ą 1% +0.1 0.70 ą 1% +0.1 0.72 ą 0% perf-profile.children.cycles-pp.__x64_sys_madvise
> 0.63 ą 1% +0.1 0.70 ą 0% +0.1 0.71 ą 0% perf-profile.children.cycles-pp.do_madvise
> 0.00 ą -1% +0.1 0.09 ą 0% +0.1 0.09 ą 5% perf-profile.children.cycles-pp.can_modify_mm_madv
> 1.32 ą 1% +0.1 1.46 ą 0% +0.2 1.50 ą 0% perf-profile.children.cycles-pp.mas_next_slot
> 87.96 ą 0% +0.6 88.52 ą 0% +0.5 88.48 ą 0% perf-profile.children.cycles-pp.mremap
> 85.91 ą 0% +0.8 86.69 ą 0% +0.7 86.61 ą 0% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
> 83.74 ą 0% +0.8 84.52 ą 0% +0.7 84.40 ą 0% perf-profile.children.cycles-pp.__do_sys_mremap
> 85.42 ą 0% +0.8 86.23 ą 0% +0.7 86.14 ą 0% perf-profile.children.cycles-pp.do_syscall_64
> 40.36 ą 0% +1.4 41.74 ą 0% +2.1 42.49 ą 0% perf-profile.children.cycles-pp.do_vmi_munmap
> 2.12 ą 0% +1.5 3.63 ą 0% +1.7 3.81 ą 0% perf-profile.children.cycles-pp.do_munmap
> 3.62 ą 0% +2.3 5.97 ą 0% +1.7 5.29 ą 0% perf-profile.children.cycles-pp.mas_walk
> 5.41 ą 0% +3.0 8.44 ą 0% +1.6 6.98 ą 0% perf-profile.children.cycles-pp.mremap_to
> 5.28 ą 0% +3.2 8.48 ą 0% +2.3 7.56 ą 0% perf-profile.children.cycles-pp.mas_find
> 0.00 ą -1% +5.4 5.45 ą 0% +3.9 3.94 ą 0% perf-profile.children.cycles-pp.can_modify_mm
> 11.51 ą 0% -0.6 10.86 ą 0% -0.5 11.04 ą 0% perf-profile.self.cycles-pp.__slab_free
> 4.23 ą 2% -0.2 4.00 ą 2% -0.1 4.13 ą 2% perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook
> 2.34 ą 1% -0.1 2.21 ą 1% -0.0 2.30 ą 3% perf-profile.self.cycles-pp.down_write
> 2.43 ą 0% -0.1 2.31 ą 0% -0.1 2.34 ą 0% perf-profile.self.cycles-pp.rcu_cblist_dequeue
> 2.34 ą 0% -0.1 2.24 ą 0% -0.1 2.27 ą 0% perf-profile.self.cycles-pp.mtree_load
> 2.21 ą 0% -0.1 2.11 ą 0% -0.1 2.14 ą 0% perf-profile.self.cycles-pp.native_flush_tlb_one_user
> 1.75 ą 0% -0.1 1.67 ą 0% -0.0 1.70 ą 0% perf-profile.self.cycles-pp.mod_objcg_state
> 1.54 ą 1% -0.1 1.46 ą 0% -0.0 1.50 ą 1% perf-profile.self.cycles-pp.up_write
> 1.52 ą 0% -0.1 1.44 ą 0% -0.1 1.46 ą 0% perf-profile.self.cycles-pp.mas_wr_walk
> 0.70 ą 3% -0.1 0.63 ą 1% -0.1 0.64 ą 1% perf-profile.self.cycles-pp.rcu_all_qs
> 1.43 ą 1% -0.1 1.36 ą 1% -0.1 1.36 ą 1% perf-profile.self.cycles-pp.__call_rcu_common
> 1.01 ą 0% -0.1 0.95 ą 0% -0.0 0.96 ą 0% perf-profile.self.cycles-pp.mas_preallocate
> 1.40 ą 1% -0.1 1.33 ą 1% -0.0 1.35 ą 0% perf-profile.self.cycles-pp.do_vmi_align_munmap
> 1.00 ą 0% -0.1 0.94 ą 0% -0.0 0.96 ą 0% perf-profile.self.cycles-pp.mas_prev_slot
> 1.14 ą 1% -0.1 1.08 ą 1% -0.0 1.10 ą 1% perf-profile.self.cycles-pp.shuffle_freelist
> 1.18 ą 0% -0.1 1.13 ą 0% -0.0 1.16 ą 0% perf-profile.self.cycles-pp.vma_merge
> 0.94 ą 1% -0.1 0.89 ą 2% -0.0 0.91 ą 1% perf-profile.self.cycles-pp.vm_area_free_rcu_cb
> 0.88 ą 0% -0.1 0.83 ą 1% -0.0 0.84 ą 0% perf-profile.self.cycles-pp.___slab_alloc
> 0.50 ą 1% -0.0 0.45 ą 2% -0.0 0.50 ą 1% perf-profile.self.cycles-pp.security_mmap_addr
> 0.77 ą 1% -0.0 0.72 ą 1% -0.0 0.74 ą 1% perf-profile.self.cycles-pp.percpu_counter_add_batch
> 0.45 ą 2% -0.0 0.40 ą 2% -0.0 0.41 ą 1% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> 1.17 ą 0% -0.0 1.12 ą 0% -0.0 1.14 ą 1% perf-profile.self.cycles-pp.clear_bhb_loop
> 1.08 ą 1% -0.0 1.04 ą 1% -0.0 1.06 ą 1% perf-profile.self.cycles-pp.__cond_resched
> 1.50 ą 2% -0.0 1.46 ą 0% -0.0 1.48 ą 0% perf-profile.self.cycles-pp.kmem_cache_free
> 1.23 ą 0% -0.0 1.18 ą 0% -0.1 1.18 ą 0% perf-profile.self.cycles-pp.move_vma
> 0.68 ą 1% -0.0 0.64 ą 0% -0.0 0.65 ą 1% perf-profile.self.cycles-pp.__split_vma
> 0.80 ą 0% -0.0 0.76 ą 1% -0.0 0.77 ą 0% perf-profile.self.cycles-pp.mas_wr_store_entry
> 0.61 ą 2% -0.0 0.57 ą 2% -0.0 0.57 ą 6% perf-profile.self.cycles-pp.mremap
> 0.85 ą 1% -0.0 0.80 ą 1% -0.0 0.81 ą 1% perf-profile.self.cycles-pp.mas_pop_node
> 0.44 ą 0% -0.0 0.40 ą 1% -0.0 0.40 ą 1% perf-profile.self.cycles-pp.do_munmap
> 0.98 ą 0% -0.0 0.94 ą 1% -0.0 0.95 ą 0% perf-profile.self.cycles-pp.move_ptes
> 0.89 ą 0% -0.0 0.86 ą 0% -0.0 0.87 ą 0% perf-profile.self.cycles-pp.mas_leaf_max_gap
> 0.46 ą 1% -0.0 0.42 ą 1% -0.0 0.43 ą 1% perf-profile.self.cycles-pp.mas_wr_end_piv
> 0.89 ą 0% -0.0 0.86 ą 0% -0.0 0.87 ą 0% perf-profile.self.cycles-pp.mas_store_gfp
> 0.79 ą 0% -0.0 0.76 ą 1% -0.0 0.76 ą 0% perf-profile.self.cycles-pp.userfaultfd_unmap_complete
> 0.99 ą 0% -0.0 0.97 ą 0% -0.0 0.98 ą 0% perf-profile.self.cycles-pp.mt_find
> 0.87 ą 0% -0.0 0.84 ą 0% -0.0 0.84 ą 0% perf-profile.self.cycles-pp.move_page_tables
> 0.55 ą 2% -0.0 0.52 ą 1% -0.0 0.52 ą 1% perf-profile.self.cycles-pp.get_old_pud
> 0.50 ą 0% -0.0 0.47 ą 1% -0.0 0.48 ą 0% perf-profile.self.cycles-pp.find_vma_prev
> 0.61 ą 0% -0.0 0.58 ą 1% -0.0 0.59 ą 0% perf-profile.self.cycles-pp.unmap_region
> 0.66 ą 0% -0.0 0.63 ą 1% -0.0 0.64 ą 0% perf-profile.self.cycles-pp.mas_store_prealloc
> 0.27 ą 1% -0.0 0.25 ą 1% -0.0 0.26 ą 1% perf-profile.self.cycles-pp.mas_prev_setup
> 0.61 ą 1% -0.0 0.59 ą 1% -0.0 0.60 ą 1% perf-profile.self.cycles-pp.copy_vma
> 0.48 ą 0% -0.0 0.45 ą 1% -0.0 0.46 ą 1% perf-profile.self.cycles-pp.flush_tlb_mm_range
> 0.41 ą 1% -0.0 0.39 ą 1% -0.0 0.40 ą 1% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
> 0.48 ą 1% -0.0 0.46 ą 1% -0.0 0.47 ą 0% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
> 0.50 ą 1% -0.0 0.48 ą 1% -0.0 0.48 ą 1% perf-profile.self.cycles-pp.refill_obj_stock
> 0.47 ą 1% -0.0 0.46 ą 1% -0.0 0.45 ą 1% perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown_vmflags
> 0.71 ą 0% -0.0 0.69 ą 1% -0.0 0.69 ą 1% perf-profile.self.cycles-pp.unmap_page_range
> 0.17 ą 4% -0.0 0.15 ą 4% -0.0 0.16 ą 3% perf-profile.self.cycles-pp.get_partial_node
> 0.24 ą 1% -0.0 0.22 ą 1% -0.0 0.23 ą 0% perf-profile.self.cycles-pp.mas_prev
> 0.45 ą 1% -0.0 0.43 ą 0% -0.0 0.44 ą 1% perf-profile.self.cycles-pp.mas_update_gap
> 0.53 ą 1% -0.0 0.51 ą 0% -0.0 0.51 ą 1% perf-profile.self.cycles-pp.mremap_to
> 0.21 ą 2% -0.0 0.19 ą 2% -0.0 0.19 ą 2% perf-profile.self.cycles-pp.__get_unmapped_area
> 0.27 ą 1% -0.0 0.26 ą 1% -0.0 0.25 ą 1% perf-profile.self.cycles-pp.tlb_finish_mmu
> 0.18 ą 2% -0.0 0.17 ą 2% -0.0 0.18 ą 2% perf-profile.self.cycles-pp.rcu_do_batch
> 0.06 ą 0% -0.0 0.05 ą 0% -0.0 0.05 ą 0% perf-profile.self.cycles-pp.vma_dup_policy
> 0.12 ą 0% -0.0 0.11 ą 0% -0.0 0.11 ą 3% perf-profile.self.cycles-pp.mas_wr_append
> 0.14 ą 3% -0.0 0.13 ą 3% -0.0 0.12 ą 3% perf-profile.self.cycles-pp.x64_sys_call
> 0.11 ą 0% +0.0 0.12 ą 0% +0.0 0.12 ą 3% perf-profile.self.cycles-pp.free_pgd_range
> 0.06 ą 5% +0.0 0.07 ą 0% +0.0 0.06 ą 5% perf-profile.self.cycles-pp.mm_get_unmapped_area_vmflags
> 0.21 ą 0% +0.0 0.22 ą 2% -0.0 0.21 ą 2% perf-profile.self.cycles-pp.thp_get_unmapped_area_vmflags
> 0.45 ą 1% +0.0 0.48 ą 2% +0.0 0.50 ą 1% perf-profile.self.cycles-pp.do_vmi_munmap
> 0.27 ą 1% +0.0 0.32 ą 2% -0.0 0.26 ą 1% perf-profile.self.cycles-pp.free_pgtables
> 0.36 ą 2% +0.1 0.44 ą 1% -0.0 0.35 ą 4% perf-profile.self.cycles-pp.unlink_anon_vmas
> 1.07 ą 1% +0.1 1.19 ą 0% +0.1 1.22 ą 0% perf-profile.self.cycles-pp.mas_next_slot
> 1.50 ą 0% +0.5 2.02 ą 0% +0.4 1.85 ą 0% perf-profile.self.cycles-pp.mas_find
> 0.00 ą -1% +1.4 1.38 ą 0% +0.9 0.92 ą 0% perf-profile.self.cycles-pp.can_modify_mm
> 3.15 ą 0% +2.1 5.26 ą 0% +1.5 4.62 ą 0% perf-profile.self.cycles-pp.mas_walk
>
>
> On Mon, Aug 19, 2024 at 02:35:40PM +0800, Oliver Sang wrote:
> > hi, Jeff,
> >
> > On Mon, Aug 19, 2024 at 09:38:19AM +0800, Oliver Sang wrote:
> > > hi, Jeff,
> > >
> > > On Sun, Aug 18, 2024 at 05:28:41PM +0800, Oliver Sang wrote:
> > > > hi, Jeff,
> > > >
> > > > On Thu, Aug 15, 2024 at 07:58:57PM -0700, Jeff Xu wrote:
> > > > > Hi Oliver
> > > >
> > > > [...]
> > > >
> > > > > > could you exlictly point to two commit-id?
> > > > > sure
> > > > >
> > > > > this patch
> > > > > 8be7258a: mseal: add mseal syscall
> > > > > ff388fe5c: mseal: wire up mseal syscall
> > > >
> > > > I failed to apply this patch set to "8be7258a: mseal: add mseal syscall"
> > >
> > > look your patch set again
> > > [PATCH v1 1/2] mseal:selftest mremap across VMA boundaries
> > > just for kselftests
> > >
> > > and I can apply
> > > [PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm
> > > upon "8be7258a: mseal: add mseal syscall" cleanly
> > >
> > > so I will start test for this [PATCH v1 2/2]
> > >
> > > BTW, I will firstly use our default setting - "60s testtime; reboot between each
> > > run; run 10 times", since we've already have the data for 8be7258a and ff388fe5c
> > > then we could give you an update kind of quickly.
> > >
> > > as some private mail discussed, you want some special run method, could you
> > > elaborate them here? thanks
> >
> > here is a quick update before you give us more details about special run method.
> >
> > by our default run method (60s testtime; reboot between each run; run 10 times),
> > your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm" could
> > resolve regression partically.
> >
> > =========================================================================================
> > compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
> > gcc-12/performance/x86_64-rhel-8.3/100%/debian-12-x86_64-20240206.cgz/lkp-icl-2sp7/pagemove/stress-ng/60s
> >
> > commit:
> > ff388fe5c4 ("mseal: wire up mseal syscall")
> > 8be7258aad ("mseal: add mseal syscall")
> > 2a78ece39f <-- your "[PATCH v1 2/2] mseal: refactor mremap to remove can_modify_mm"
> >
> > ff388fe5c481d39c 8be7258aad44b5e25977a98db13 2a78ece39f13ea6f3f9679a6c66
> > ---------------- --------------------------- ---------------------------
> > %stddev %change %stddev %change %stddev
> > \ | \ | \
> > 4957 +1.3% 5023 +1.0% 5008 time.percent_of_cpu_this_job_got
> > 2915 +1.5% 2959 +1.2% 2949 time.system_time
> > 65.96 -7.3% 61.16 -5.5% 62.30 time.user_time
> > 41535878 -4.0% 39873501 -2.6% 40452264 proc-vmstat.numa_hit
> > 41466104 -4.0% 39806121 -2.6% 40384854 proc-vmstat.numa_local
> > 77297398 -4.1% 74165258 -2.6% 75286134 proc-vmstat.pgalloc_normal
> > 77016866 -4.1% 73886027 -2.6% 75012630 proc-vmstat.pgfree
> > 18386219 -5.0% 17474214 -2.9% 17850959 stress-ng.pagemove.ops
> > 306421 -5.0% 291207 -2.9% 297490 stress-ng.pagemove.ops_per_sec
> > 4957 +1.3% 5023 +1.0% 5008 stress-ng.time.percent_of_cpu_this_job_got
> > 2915 +1.5% 2959 +1.2% 2949 stress-ng.time.system_time
> > 3.349e+10 ą 4% +3.0% 3.447e+10 ą 2% +4.1% 3.484e+10 perf-stat.i.branch-instructions
> > 1.13 -2.1% 1.10 -2.2% 1.10 perf-stat.i.cpi
> > 0.89 +2.2% 0.91 +2.0% 0.91 perf-stat.i.ipc
> > 1.04 -6.9% 0.97 -4.9% 0.99 perf-stat.overall.MPKI
> > 1.13 -2.3% 1.10 -2.0% 1.10 perf-stat.overall.cpi
> > 1081 +5.0% 1136 +3.0% 1114 perf-stat.overall.cycles-between-cache-misses
> > 0.89 +2.3% 0.91 +2.0% 0.91 perf-stat.overall.ipc
> > 3.295e+10 ą 3% +2.9% 3.392e+10 ą 2% +4.0% 3.427e+10 perf-stat.ps.branch-instructions
> > 1.674e+11 ą 3% +1.8% 1.704e+11 ą 2% +3.3% 1.73e+11 perf-stat.ps.instructions
> > 1.046e+13 +2.7% 1.074e+13 +1.7% 1.064e+13 perf-stat.total.instructions
> > 75.05 -2.0 73.02 -0.9 74.18 perf-profile.calltrace.cycles-pp.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> > 36.83 -1.6 35.19 -1.2 35.62 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> > 25.02 -1.4 23.65 -0.9 24.12 perf-profile.calltrace.cycles-pp.copy_vma.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 19.94 -1.1 18.87 -0.8 19.19 perf-profile.calltrace.cycles-pp.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 14.78 -0.8 14.01 -0.5 14.28 perf-profile.calltrace.cycles-pp.vma_merge.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> > 1.48 -0.5 0.99 -0.5 1.00 perf-profile.calltrace.cycles-pp.mas_find.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> > 7.88 -0.4 7.47 -0.3 7.62 perf-profile.calltrace.cycles-pp.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 6.73 -0.4 6.37 -0.2 6.51 perf-profile.calltrace.cycles-pp.vm_area_dup.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 6.16 -0.3 5.82 -0.3 5.90 perf-profile.calltrace.cycles-pp.vma_complete.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 6.12 -0.3 5.79 -0.2 5.93 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> > 5.79 -0.3 5.48 -0.2 5.59 perf-profile.calltrace.cycles-pp.move_ptes.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64
> > 5.54 -0.3 5.25 -0.2 5.32 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_complete.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> > 5.56 -0.3 5.28 -0.2 5.36 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_merge.copy_vma.move_vma.__do_sys_mremap
> > 5.19 -0.3 4.92 -0.2 4.98 perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_complete.__split_vma.do_vmi_align_munmap
> > 5.21 -0.3 4.95 -0.2 5.02 perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_prealloc.vma_merge.copy_vma.move_vma
> > 4.09 -0.2 3.85 -0.2 3.93 perf-profile.calltrace.cycles-pp.vm_area_dup.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> > 4.69 -0.2 4.46 -0.2 4.51 perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_merge.copy_vma
> > 3.56 -0.2 3.36 -0.1 3.43 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.vm_area_dup.copy_vma.move_vma.__do_sys_mremap
> > 3.40 -0.2 3.22 -0.1 3.29 perf-profile.calltrace.cycles-pp.flush_tlb_mm_range.move_ptes.move_page_tables.move_vma.__do_sys_mremap
> > 1.35 -0.2 1.16 -0.1 1.24 perf-profile.calltrace.cycles-pp.mas_find.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap
> > 4.00 -0.2 3.82 -0.1 3.86 perf-profile.calltrace.cycles-pp.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_complete.__split_vma
> > 2.23 -0.2 2.05 -0.1 2.12 perf-profile.calltrace.cycles-pp.find_vma_prev.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> > 8.26 -0.2 8.10 -0.2 8.06 perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 1.97 ą 3% -0.2 1.81 ą 3% -0.1 1.88 ą 4% perf-profile.calltrace.cycles-pp.mod_objcg_state.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.__split_vma
> > 3.11 ą 2% -0.2 2.96 -0.1 3.05 perf-profile.calltrace.cycles-pp.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap
> > 0.97 -0.2 0.81 -0.1 0.87 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.do_vmi_munmap.do_munmap.mremap_to
> > 2.27 -0.2 2.11 -0.1 2.16 perf-profile.calltrace.cycles-pp.mas_preallocate.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 3.25 -0.1 3.10 -0.1 3.17 perf-profile.calltrace.cycles-pp.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 3.14 -0.1 3.00 -0.1 3.06 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 2.98 -0.1 2.85 -0.1 2.87 ą 2% perf-profile.calltrace.cycles-pp.anon_vma_clone.__split_vma.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 1.27 ą 2% -0.1 1.15 ą 4% -0.1 1.19 ą 6% perf-profile.calltrace.cycles-pp.__memcpy.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_merge
> > 2.45 -0.1 2.34 -0.1 2.38 perf-profile.calltrace.cycles-pp.flush_tlb_func.flush_tlb_mm_range.move_ptes.move_page_tables.move_vma
> > 2.05 -0.1 1.94 -0.1 1.97 perf-profile.calltrace.cycles-pp.mas_preallocate.vma_merge.copy_vma.move_vma.__do_sys_mremap
> > 2.44 -0.1 2.33 -0.1 2.38 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
> > 2.22 -0.1 2.11 -0.1 2.15 perf-profile.calltrace.cycles-pp.native_flush_tlb_one_user.flush_tlb_func.flush_tlb_mm_range.move_ptes.move_page_tables
> > 1.76 ą 2% -0.1 1.65 ą 2% -0.1 1.66 ą 4% perf-profile.calltrace.cycles-pp.vma_prepare.vma_merge.copy_vma.move_vma.__do_sys_mremap
> > 1.86 -0.1 1.75 -0.1 1.78 perf-profile.calltrace.cycles-pp.vma_link.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> > 1.40 -0.1 1.30 -0.1 1.34 perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.__split_vma.do_vmi_align_munmap.do_vmi_munmap
> > 1.39 -0.1 1.30 -0.1 1.33 perf-profile.calltrace.cycles-pp.mas_alloc_nodes.mas_preallocate.vma_merge.copy_vma.move_vma
> > 0.55 -0.1 0.46 ą 30% -0.0 0.52 perf-profile.calltrace.cycles-pp.mas_find.find_vma_prev.copy_vma.move_vma.__do_sys_mremap
> > 1.25 -0.1 1.16 -0.1 1.20 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma.do_vmi_align_munmap
> > 0.94 -0.1 0.86 -0.1 0.87 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.do_vmi_munmap.move_vma.__do_sys_mremap
> > 1.23 -0.1 1.15 -0.1 1.17 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.vma_merge.copy_vma
> > 1.54 -0.1 1.47 -0.0 1.49 perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
> > 0.73 -0.1 0.66 -0.0 0.69 perf-profile.calltrace.cycles-pp.mas_walk.find_vma_prev.copy_vma.move_vma.__do_sys_mremap
> > 1.15 -0.1 1.09 -0.1 1.10 perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.__split_vma.do_vmi_align_munmap
> > 0.60 ą 2% -0.1 0.54 -0.0 0.58 perf-profile.calltrace.cycles-pp.security_mmap_addr.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64
> > 1.27 -0.1 1.21 -0.0 1.24 perf-profile.calltrace.cycles-pp.mas_wr_store_entry.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 0.80 ą 2% -0.1 0.74 ą 2% -0.0 0.76 ą 2% perf-profile.calltrace.cycles-pp.__call_rcu_common.mas_wr_node_store.mas_wr_store_entry.mas_store_prealloc.vma_merge
> > 0.72 -0.1 0.66 -0.0 0.69 perf-profile.calltrace.cycles-pp.mas_prev.vma_merge.copy_vma.move_vma.__do_sys_mremap
> > 0.78 -0.1 0.73 -0.0 0.75 perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.__split_vma
> > 0.69 ą 2% -0.1 0.64 ą 3% -0.0 0.66 ą 4% perf-profile.calltrace.cycles-pp.mod_objcg_state.__memcg_slab_post_alloc_hook.kmem_cache_alloc_noprof.vm_area_dup.copy_vma
> > 1.63 -0.1 1.58 -0.1 1.57 perf-profile.calltrace.cycles-pp.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 1.02 -0.1 0.97 -0.0 0.98 perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
> > 0.77 -0.0 0.72 -0.0 0.74 perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.mas_alloc_nodes.mas_preallocate.vma_merge
> > 0.62 -0.0 0.57 -0.0 0.60 perf-profile.calltrace.cycles-pp.mas_prev_setup.mas_prev.vma_merge.copy_vma.move_vma
> > 0.67 -0.0 0.62 -0.0 0.64 perf-profile.calltrace.cycles-pp.percpu_counter_add_batch.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 0.86 -0.0 0.81 -0.0 0.83 perf-profile.calltrace.cycles-pp.mtree_load.vma_to_resize.mremap_to.__do_sys_mremap.do_syscall_64
> > 1.12 -0.0 1.08 -0.0 1.09 perf-profile.calltrace.cycles-pp.clear_bhb_loop.mremap
> > 0.56 -0.0 0.51 -0.0 0.53 perf-profile.calltrace.cycles-pp.mas_walk.mas_prev_setup.mas_prev.vma_merge.copy_vma
> > 0.68 ą 2% -0.0 0.63 -0.0 0.65 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.mremap
> > 0.81 -0.0 0.77 -0.0 0.80 perf-profile.calltrace.cycles-pp.mtree_load.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> > 1.02 -0.0 0.97 -0.0 0.98 perf-profile.calltrace.cycles-pp.vma_to_resize.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 0.95 ą 2% -0.0 0.90 ą 2% -0.0 0.93 perf-profile.calltrace.cycles-pp.__memcg_slab_free_hook.kmem_cache_free.unlink_anon_vmas.free_pgtables.unmap_region
> > 0.98 -0.0 0.94 -0.0 0.95 perf-profile.calltrace.cycles-pp.mas_find.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 0.78 -0.0 0.74 -0.0 0.75 perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_link.copy_vma.move_vma.__do_sys_mremap
> > 0.70 -0.0 0.66 -0.0 0.67 perf-profile.calltrace.cycles-pp.__call_rcu_common.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 0.69 -0.0 0.65 -0.0 0.66 perf-profile.calltrace.cycles-pp.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.copy_vma.move_vma
> > 0.69 -0.0 0.65 -0.0 0.65 perf-profile.calltrace.cycles-pp.mas_preallocate.vma_link.copy_vma.move_vma.__do_sys_mremap
> > 0.62 -0.0 0.59 -0.0 0.60 perf-profile.calltrace.cycles-pp.mas_prev_slot.do_vmi_align_munmap.do_vmi_munmap.move_vma.__do_sys_mremap
> > 1.16 -0.0 1.12 -0.0 1.13 perf-profile.calltrace.cycles-pp.anon_vma_clone.copy_vma.move_vma.__do_sys_mremap.do_syscall_64
> > 0.76 ą 2% -0.0 0.72 -0.0 0.72 ą 2% perf-profile.calltrace.cycles-pp.allocate_slab.___slab_alloc.kmem_cache_alloc_noprof.vm_area_dup.__split_vma
> > 1.01 -0.0 0.97 -0.0 0.99 perf-profile.calltrace.cycles-pp.mt_find.vma_merge.copy_vma.move_vma.__do_sys_mremap
> > 0.60 -0.0 0.57 -0.0 0.58 perf-profile.calltrace.cycles-pp.__pte_offset_map_lock.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
> > 0.88 -0.0 0.85 -0.0 0.85 perf-profile.calltrace.cycles-pp.userfaultfd_unmap_complete.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> > 0.62 ą 2% -0.0 0.59 ą 2% -0.0 0.60 perf-profile.calltrace.cycles-pp.get_old_pud.move_page_tables.move_vma.__do_sys_mremap.do_syscall_64
> > 0.59 -0.0 0.56 -0.0 0.56 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.mremap
> > 0.65 -0.0 0.62 ą 2% -0.0 0.63 perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_gfp.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 0.81 +0.0 0.82 -0.0 0.79 perf-profile.calltrace.cycles-pp.thp_get_unmapped_area_vmflags.__get_unmapped_area.mremap_to.__do_sys_mremap.do_syscall_64
> > 2.76 +0.0 2.78 ą 2% -0.1 2.67 perf-profile.calltrace.cycles-pp.unlink_anon_vmas.free_pgtables.unmap_region.do_vmi_align_munmap.do_vmi_munmap
> > 3.47 +0.0 3.51 -0.1 3.37 perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.do_vmi_align_munmap.do_vmi_munmap.move_vma
> > 0.76 +0.1 0.83 +0.1 0.85 perf-profile.calltrace.cycles-pp.__madvise
> > 0.66 +0.1 0.73 +0.1 0.75 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> > 0.67 +0.1 0.74 +0.1 0.76 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__madvise
> > 0.63 +0.1 0.70 +0.1 0.72 perf-profile.calltrace.cycles-pp.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> > 0.62 +0.1 0.70 +0.1 0.71 perf-profile.calltrace.cycles-pp.do_madvise.__x64_sys_madvise.do_syscall_64.entry_SYSCALL_64_after_hwframe.__madvise
> > 0.00 +0.9 0.86 +0.9 0.92 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.do_vmi_munmap.do_munmap
> > 0.00 +0.9 0.88 +0.0 0.00 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.mremap_to.__do_sys_mremap
> > 83.81 +0.9 84.69 +0.6 84.44 perf-profile.calltrace.cycles-pp.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> > 0.00 +0.9 0.90 ą 2% +0.9 0.91 perf-profile.calltrace.cycles-pp.mas_walk.mas_find.can_modify_mm.do_vmi_munmap.move_vma
> > 0.00 +1.1 1.10 +0.0 0.00 perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.mremap_to.__do_sys_mremap.do_syscall_64
> > 0.00 +1.2 1.21 +1.3 1.28 perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.do_vmi_munmap.do_munmap.mremap_to
> > 2.10 +1.5 3.60 +1.7 3.79 perf-profile.calltrace.cycles-pp.do_munmap.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 0.00 +1.5 1.52 +1.5 1.52 perf-profile.calltrace.cycles-pp.mas_find.can_modify_mm.do_vmi_munmap.move_vma.__do_sys_mremap
> > 1.59 +1.5 3.12 +1.7 3.31 perf-profile.calltrace.cycles-pp.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap.do_syscall_64
> > 0.00 +1.6 1.61 +0.0 0.00 perf-profile.calltrace.cycles-pp.can_modify_mm.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe
> > 0.00 +1.7 1.73 +1.8 1.83 perf-profile.calltrace.cycles-pp.can_modify_mm.do_vmi_munmap.do_munmap.mremap_to.__do_sys_mremap
> > 0.00 +2.0 2.01 +2.0 2.04 perf-profile.calltrace.cycles-pp.can_modify_mm.do_vmi_munmap.move_vma.__do_sys_mremap.do_syscall_64
> > 5.34 +3.0 8.38 +1.6 6.92 perf-profile.calltrace.cycles-pp.mremap_to.__do_sys_mremap.do_syscall_64.entry_SYSCALL_64_after_hwframe.mremap
> > 75.22 -2.0 73.18 -0.9 74.34 perf-profile.children.cycles-pp.move_vma
> > 37.04 -1.6 35.40 -1.2 35.83 perf-profile.children.cycles-pp.do_vmi_align_munmap
> > 25.09 -1.4 23.72 -0.9 24.20 perf-profile.children.cycles-pp.copy_vma
> > 20.04 -1.1 18.96 -0.8 19.28 perf-profile.children.cycles-pp.__split_vma
> > 19.87 -1.0 18.84 -0.6 19.24 perf-profile.children.cycles-pp.rcu_core
> > 19.85 -1.0 18.82 -0.6 19.22 perf-profile.children.cycles-pp.rcu_do_batch
> > 19.89 -1.0 18.86 -0.6 19.26 perf-profile.children.cycles-pp.handle_softirqs
> > 17.55 -0.9 16.67 -0.5 17.02 perf-profile.children.cycles-pp.kmem_cache_free
> > 15.32 -0.8 14.49 -0.5 14.78 perf-profile.children.cycles-pp.kmem_cache_alloc_noprof
> > 15.17 -0.8 14.39 -0.5 14.66 perf-profile.children.cycles-pp.vma_merge
> > 12.12 -0.6 11.48 -0.4 11.70 perf-profile.children.cycles-pp.__slab_free
> > 12.19 -0.6 11.56 -0.5 11.73 perf-profile.children.cycles-pp.mas_wr_store_entry
> > 11.99 -0.6 11.36 -0.5 11.53 perf-profile.children.cycles-pp.mas_store_prealloc
> > 10.88 -0.6 10.28 -0.4 10.50 perf-profile.children.cycles-pp.vm_area_dup
> > 9.90 -0.5 9.41 -0.4 9.53 perf-profile.children.cycles-pp.mas_wr_node_store
> > 8.39 -0.5 7.92 -0.3 8.13 perf-profile.children.cycles-pp.__memcg_slab_post_alloc_hook
> > 7.99 -0.4 7.58 -0.3 7.73 perf-profile.children.cycles-pp.move_page_tables
> > 6.70 -0.4 6.33 -0.3 6.43 perf-profile.children.cycles-pp.vma_complete
> > 5.87 -0.3 5.55 -0.2 5.66 perf-profile.children.cycles-pp.move_ptes
> > 5.12 -0.3 4.81 -0.2 4.90 perf-profile.children.cycles-pp.mas_preallocate
> > 6.05 -0.3 5.74 -0.2 5.85 perf-profile.children.cycles-pp.vm_area_free_rcu_cb
> > 2.98 -0.3 2.69 ą 4% -0.2 2.80 ą 6% perf-profile.children.cycles-pp.__memcpy
> > 3.46 ą 2% -0.2 3.25 -0.1 3.36 ą 3% perf-profile.children.cycles-pp.mod_objcg_state
> > 3.47 -0.2 3.26 -0.2 3.32 perf-profile.children.cycles-pp.___slab_alloc
> > 2.44 -0.2 2.25 -0.1 2.33 perf-profile.children.cycles-pp.find_vma_prev
> > 2.92 -0.2 2.73 -0.1 2.79 perf-profile.children.cycles-pp.mas_alloc_nodes
> > 3.46 -0.2 3.27 -0.1 3.34 perf-profile.children.cycles-pp.flush_tlb_mm_range
> > 3.47 -0.2 3.29 -0.2 3.32 ą 2% perf-profile.children.cycles-pp.down_write
> > 3.33 -0.2 3.16 -0.1 3.25 perf-profile.children.cycles-pp.__memcg_slab_free_hook
> > 4.23 -0.2 4.07 -0.1 4.08 ą 2% perf-profile.children.cycles-pp.anon_vma_clone
> > 8.33 -0.2 8.17 -0.2 8.13 perf-profile.children.cycles-pp.unmap_region
> > 3.35 -0.1 3.20 -0.1 3.26 perf-profile.children.cycles-pp.mas_store_gfp
> > 2.21 -0.1 2.07 -0.1 2.10 perf-profile.children.cycles-pp.__cond_resched
> > 3.19 -0.1 3.05 -0.1 3.11 perf-profile.children.cycles-pp.unmap_vmas
> > 2.12 -0.1 1.99 -0.1 2.04 perf-profile.children.cycles-pp.__call_rcu_common
> > 2.66 -0.1 2.54 -0.1 2.60 perf-profile.children.cycles-pp.mtree_load
> > 2.24 -0.1 2.12 ą 2% -0.1 2.13 ą 3% perf-profile.children.cycles-pp.vma_prepare
> > 2.50 -0.1 2.38 -0.1 2.42 perf-profile.children.cycles-pp.flush_tlb_func
> > 2.04 ą 2% -0.1 1.93 -0.1 1.96 ą 2% perf-profile.children.cycles-pp.allocate_slab
> > 2.46 -0.1 2.35 -0.1 2.41 perf-profile.children.cycles-pp.rcu_cblist_dequeue
> > 2.48 -0.1 2.38 -0.1 2.42 perf-profile.children.cycles-pp.unmap_page_range
> > 2.23 -0.1 2.12 -0.1 2.16 perf-profile.children.cycles-pp.native_flush_tlb_one_user
> > 1.77 -0.1 1.67 -0.1 1.70 perf-profile.children.cycles-pp.mas_wr_walk
> > 1.88 -0.1 1.78 -0.1 1.80 perf-profile.children.cycles-pp.vma_link
> > 1.84 -0.1 1.75 -0.1 1.77 perf-profile.children.cycles-pp.up_write
> > 0.97 ą 2% -0.1 0.88 -0.1 0.89 perf-profile.children.cycles-pp.rcu_all_qs
> > 1.40 -0.1 1.32 -0.1 1.34 ą 2% perf-profile.children.cycles-pp.shuffle_freelist
> > 1.03 -0.1 0.95 -0.0 0.99 perf-profile.children.cycles-pp.mas_prev
> > 0.92 -0.1 0.85 -0.0 0.88 perf-profile.children.cycles-pp.mas_prev_setup
> > 1.58 -0.1 1.51 -0.1 1.53 perf-profile.children.cycles-pp.zap_pmd_range
> > 1.24 -0.1 1.17 -0.0 1.20 perf-profile.children.cycles-pp.mas_prev_slot
> > 1.57 -0.1 1.49 -0.1 1.49 perf-profile.children.cycles-pp.mas_update_gap
> > 0.62 -0.1 0.56 -0.0 0.60 perf-profile.children.cycles-pp.security_mmap_addr
> > 0.90 -0.1 0.84 -0.0 0.86 perf-profile.children.cycles-pp.percpu_counter_add_batch
> > 0.86 -0.1 0.80 -0.0 0.81 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> > 0.98 -0.1 0.92 -0.0 0.95 perf-profile.children.cycles-pp.mas_pop_node
> > 1.68 -0.1 1.62 -0.1 1.62 perf-profile.children.cycles-pp.__get_unmapped_area
> > 1.23 -0.1 1.18 -0.0 1.20 perf-profile.children.cycles-pp.__pte_offset_map_lock
> > 0.49 ą 2% -0.1 0.43 -0.1 0.43 ą 2% perf-profile.children.cycles-pp.setup_object
> > 1.09 -0.1 1.03 -0.0 1.05 perf-profile.children.cycles-pp.zap_pte_range
> > 1.07 ą 2% -0.1 1.02 ą 2% -0.1 1.00 perf-profile.children.cycles-pp.mas_leaf_max_gap
> > 0.70 ą 2% -0.0 0.65 -0.0 0.67 perf-profile.children.cycles-pp.syscall_return_via_sysret
> > 1.18 -0.0 1.14 -0.0 1.15 perf-profile.children.cycles-pp.clear_bhb_loop
> > 0.51 ą 3% -0.0 0.47 -0.0 0.49 ą 3% perf-profile.children.cycles-pp.anon_vma_interval_tree_insert
> > 1.04 -0.0 1.00 -0.0 1.01 perf-profile.children.cycles-pp.vma_to_resize
> > 0.57 -0.0 0.53 -0.0 0.54 perf-profile.children.cycles-pp.mas_wr_end_piv
> > 0.44 ą 2% -0.0 0.40 ą 2% -0.0 0.40 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> > 1.14 -0.0 1.10 -0.0 1.12 perf-profile.children.cycles-pp.mt_find
> > 0.90 -0.0 0.87 -0.0 0.87 perf-profile.children.cycles-pp.userfaultfd_unmap_complete
> > 0.62 -0.0 0.59 -0.0 0.60 perf-profile.children.cycles-pp.__put_partials
> > 0.45 ą 6% -0.0 0.42 -0.0 0.43 perf-profile.children.cycles-pp._raw_spin_lock
> > 0.48 -0.0 0.45 ą 2% -0.0 0.46 perf-profile.children.cycles-pp.mas_prev_range
> > 0.61 -0.0 0.58 -0.0 0.59 perf-profile.children.cycles-pp.entry_SYSCALL_64
> > 0.31 ą 3% -0.0 0.28 ą 3% -0.0 0.31 perf-profile.children.cycles-pp.security_vm_enough_memory_mm
> > 0.33 ą 3% -0.0 0.30 ą 2% -0.0 0.31 ą 4% perf-profile.children.cycles-pp.mas_put_in_tree
> > 0.32 ą 2% -0.0 0.29 ą 2% -0.0 0.30 perf-profile.children.cycles-pp.tlb_finish_mmu
> > 0.46 -0.0 0.44 ą 2% -0.0 0.46 perf-profile.children.cycles-pp.rcu_segcblist_enqueue
> > 0.33 -0.0 0.31 -0.0 0.32 perf-profile.children.cycles-pp.mas_destroy
> > 0.36 -0.0 0.34 -0.0 0.34 perf-profile.children.cycles-pp.__rb_insert_augmented
> > 0.39 -0.0 0.37 -0.0 0.38 ą 2% perf-profile.children.cycles-pp.down_write_killable
> > 0.29 -0.0 0.27 ą 2% -0.0 0.28 perf-profile.children.cycles-pp.tlb_gather_mmu
> > 0.26 -0.0 0.24 ą 2% -0.0 0.25 ą 2% perf-profile.children.cycles-pp.syscall_exit_to_user_mode
> > 0.16 ą 2% -0.0 0.14 ą 3% -0.0 0.14 ą 3% perf-profile.children.cycles-pp.mas_wr_append
> > 0.30 ą 2% -0.0 0.28 ą 2% -0.0 0.29 ą 2% perf-profile.children.cycles-pp.__vm_enough_memory
> > 0.32 -0.0 0.30 ą 2% -0.0 0.31 perf-profile.children.cycles-pp.pte_offset_map_nolock
> > 2.83 +0.0 2.85 ą 2% -0.1 2.74 perf-profile.children.cycles-pp.unlink_anon_vmas
> > 0.84 +0.0 0.86 -0.0 0.81 perf-profile.children.cycles-pp.thp_get_unmapped_area_vmflags
> > 0.08 ą 5% +0.0 0.10 ą 3% -0.0 0.08 ą 6% perf-profile.children.cycles-pp.mm_get_unmapped_area_vmflags
> > 3.52 +0.0 3.56 -0.1 3.42 perf-profile.children.cycles-pp.free_pgtables
> > 0.78 +0.1 0.85 +0.1 0.86 perf-profile.children.cycles-pp.__madvise
> > 0.63 +0.1 0.70 +0.1 0.72 perf-profile.children.cycles-pp.__x64_sys_madvise
> > 0.63 +0.1 0.70 +0.1 0.71 perf-profile.children.cycles-pp.do_madvise
> > 0.00 +0.1 0.09 ą 3% +0.1 0.10 ą 5% perf-profile.children.cycles-pp.can_modify_mm_madv
> > 1.31 +0.2 1.46 +0.2 1.50 perf-profile.children.cycles-pp.mas_next_slot
> > 83.90 +0.9 84.79 +0.6 84.53 perf-profile.children.cycles-pp.__do_sys_mremap
> > 40.45 +1.4 41.90 +2.1 42.57 perf-profile.children.cycles-pp.do_vmi_munmap
> > 2.12 +1.5 3.62 +1.7 3.82 perf-profile.children.cycles-pp.do_munmap
> > 3.63 +2.4 5.98 +1.7 5.29 perf-profile.children.cycles-pp.mas_walk
> > 5.40 +3.0 8.44 +1.6 6.97 perf-profile.children.cycles-pp.mremap_to
> > 5.26 +3.2 8.48 +2.3 7.58 perf-profile.children.cycles-pp.mas_find
> > 0.00 +5.5 5.46 +3.9 3.93 perf-profile.children.cycles-pp.can_modify_mm
> > 11.49 -0.6 10.89 -0.4 11.10 perf-profile.self.cycles-pp.__slab_free
> > 4.32 -0.3 4.06 -0.2 4.16 perf-profile.self.cycles-pp.__memcg_slab_post_alloc_hook
> > 1.96 -0.2 1.77 ą 4% -0.1 1.84 ą 6% perf-profile.self.cycles-pp.__memcpy
> > 2.36 -0.1 2.25 ą 2% -0.1 2.25 ą 3% perf-profile.self.cycles-pp.down_write
> > 2.42 -0.1 2.31 -0.0 2.38 perf-profile.self.cycles-pp.rcu_cblist_dequeue
> > 2.33 -0.1 2.23 -0.1 2.28 perf-profile.self.cycles-pp.mtree_load
> > 2.21 -0.1 2.10 -0.1 2.14 perf-profile.self.cycles-pp.native_flush_tlb_one_user
> > 1.62 -0.1 1.54 -0.0 1.57 perf-profile.self.cycles-pp.__memcg_slab_free_hook
> > 1.52 -0.1 1.44 -0.1 1.46 perf-profile.self.cycles-pp.mas_wr_walk
> > 1.44 -0.1 1.36 -0.1 1.38 ą 2% perf-profile.self.cycles-pp.__call_rcu_common
> > 1.53 -0.1 1.45 -0.0 1.48 perf-profile.self.cycles-pp.up_write
> > 1.72 -0.1 1.65 -0.0 1.70 perf-profile.self.cycles-pp.mod_objcg_state
> > 0.69 ą 2% -0.1 0.63 -0.1 0.63 perf-profile.self.cycles-pp.rcu_all_qs
> > 1.14 ą 2% -0.1 1.08 -0.0 1.09 ą 2% perf-profile.self.cycles-pp.shuffle_freelist
> > 1.18 -0.1 1.12 -0.0 1.17 perf-profile.self.cycles-pp.vma_merge
> > 1.38 -0.1 1.33 -0.0 1.35 perf-profile.self.cycles-pp.do_vmi_align_munmap
> > 0.51 ą 2% -0.1 0.45 -0.0 0.49 perf-profile.self.cycles-pp.security_mmap_addr
> > 0.62 -0.1 0.56 ą 2% -0.1 0.56 perf-profile.self.cycles-pp.mremap
> > 0.89 -0.1 0.83 -0.0 0.85 perf-profile.self.cycles-pp.___slab_alloc
> > 0.99 -0.1 0.94 -0.0 0.96 perf-profile.self.cycles-pp.mas_prev_slot
> > 1.00 -0.0 0.95 -0.0 0.96 perf-profile.self.cycles-pp.mas_preallocate
> > 0.98 -0.0 0.93 -0.0 0.95 perf-profile.self.cycles-pp.move_ptes
> > 0.85 -0.0 0.80 -0.0 0.82 perf-profile.self.cycles-pp.mas_pop_node
> > 0.94 -0.0 0.90 -0.0 0.91 ą 2% perf-profile.self.cycles-pp.vm_area_free_rcu_cb
> > 1.09 -0.0 1.04 -0.0 1.06 perf-profile.self.cycles-pp.__cond_resched
> > 0.77 -0.0 0.72 -0.0 0.74 perf-profile.self.cycles-pp.percpu_counter_add_batch
> > 0.94 ą 2% -0.0 0.89 ą 2% -0.1 0.87 perf-profile.self.cycles-pp.mas_leaf_max_gap
> > 1.17 -0.0 1.12 -0.0 1.14 perf-profile.self.cycles-pp.clear_bhb_loop
> > 0.68 -0.0 0.63 -0.0 0.65 perf-profile.self.cycles-pp.__split_vma
> > 0.79 -0.0 0.75 -0.0 0.77 perf-profile.self.cycles-pp.mas_wr_store_entry
> > 1.22 -0.0 1.18 -0.0 1.18 perf-profile.self.cycles-pp.move_vma
> > 0.43 ą 2% -0.0 0.40 ą 2% -0.0 0.40 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> > 1.49 -0.0 1.45 +0.0 1.49 perf-profile.self.cycles-pp.kmem_cache_free
> > 0.44 -0.0 0.40 -0.0 0.40 perf-profile.self.cycles-pp.do_munmap
> > 0.45 -0.0 0.42 -0.0 0.43 perf-profile.self.cycles-pp.mas_wr_end_piv
> > 0.89 -0.0 0.86 -0.0 0.88 perf-profile.self.cycles-pp.mas_store_gfp
> > 0.78 -0.0 0.75 -0.0 0.76 perf-profile.self.cycles-pp.userfaultfd_unmap_complete
> > 0.66 -0.0 0.62 -0.0 0.64 perf-profile.self.cycles-pp.mas_store_prealloc
> > 0.60 -0.0 0.58 -0.0 0.59 perf-profile.self.cycles-pp.unmap_region
> > 0.36 ą 4% -0.0 0.33 ą 3% -0.0 0.34 ą 2% perf-profile.self.cycles-pp.syscall_return_via_sysret
> > 0.55 -0.0 0.52 -0.0 0.53 perf-profile.self.cycles-pp.get_old_pud
> > 0.99 -0.0 0.97 -0.0 0.98 perf-profile.self.cycles-pp.mt_find
> > 0.61 -0.0 0.58 -0.0 0.60 perf-profile.self.cycles-pp.copy_vma
> > 0.43 ą 3% -0.0 0.40 -0.0 0.41 ą 4% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert
> > 0.49 -0.0 0.47 -0.0 0.48 perf-profile.self.cycles-pp.find_vma_prev
> > 0.71 -0.0 0.68 -0.0 0.70 perf-profile.self.cycles-pp.unmap_page_range
> > 0.27 -0.0 0.25 -0.0 0.26 perf-profile.self.cycles-pp.mas_prev_setup
> > 0.47 -0.0 0.45 -0.0 0.46 ą 2% perf-profile.self.cycles-pp.flush_tlb_mm_range
> > 0.37 ą 6% -0.0 0.35 -0.0 0.35 perf-profile.self.cycles-pp._raw_spin_lock
> > 0.41 -0.0 0.39 -0.0 0.40 perf-profile.self.cycles-pp._raw_spin_lock_irqsave
> > 0.40 -0.0 0.37 -0.0 0.38 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
> > 0.27 -0.0 0.25 ą 2% -0.0 0.25 ą 3% perf-profile.self.cycles-pp.mas_put_in_tree
> > 0.49 -0.0 0.47 -0.0 0.49 perf-profile.self.cycles-pp.refill_obj_stock
> > 0.48 -0.0 0.46 -0.0 0.47 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
> > 0.27 ą 2% -0.0 0.25 -0.0 0.26 perf-profile.self.cycles-pp.tlb_finish_mmu
> > 0.24 ą 2% -0.0 0.22 -0.0 0.23 perf-profile.self.cycles-pp.mas_prev
> > 0.28 -0.0 0.26 -0.0 0.27 ą 2% perf-profile.self.cycles-pp.mas_alloc_nodes
> > 0.40 -0.0 0.39 -0.0 0.40 perf-profile.self.cycles-pp.__pte_offset_map_lock
> > 0.14 ą 3% -0.0 0.12 ą 2% -0.0 0.13 ą 3% perf-profile.self.cycles-pp.syscall_exit_to_user_mode
> > 0.26 -0.0 0.24 ą 2% -0.0 0.25 perf-profile.self.cycles-pp.__rb_insert_augmented
> > 0.28 -0.0 0.26 -0.0 0.27 perf-profile.self.cycles-pp.alloc_new_pud
> > 0.28 -0.0 0.26 -0.0 0.27 ą 2% perf-profile.self.cycles-pp.flush_tlb_func
> > 0.20 ą 2% -0.0 0.19 -0.0 0.19 ą 2% perf-profile.self.cycles-pp.__get_unmapped_area
> > 0.47 -0.0 0.46 -0.0 0.45 perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown_vmflags
> > 0.06 -0.0 0.05 ą 5% -0.0 0.05 perf-profile.self.cycles-pp.vma_dup_policy
> > 0.06 ą 6% +0.0 0.07 -0.0 0.06 ą 8% perf-profile.self.cycles-pp.mm_get_unmapped_area_vmflags
> > 0.11 ą 4% +0.0 0.12 ą 4% +0.0 0.12 ą 4% perf-profile.self.cycles-pp.free_pgd_range
> > 0.21 +0.0 0.22 ą 2% -0.0 0.20 ą 2% perf-profile.self.cycles-pp.thp_get_unmapped_area_vmflags
> > 0.45 +0.0 0.48 +0.0 0.50 perf-profile.self.cycles-pp.do_vmi_munmap
> > 0.27 +0.0 0.32 -0.0 0.26 perf-profile.self.cycles-pp.free_pgtables
> > 0.36 ą 2% +0.1 0.44 -0.0 0.35 perf-profile.self.cycles-pp.unlink_anon_vmas
> > 1.07 +0.1 1.19 +0.2 1.22 perf-profile.self.cycles-pp.mas_next_slot
> > 1.49 +0.5 2.01 +0.4 1.86 perf-profile.self.cycles-pp.mas_find
> > 0.00 +1.4 1.37 +0.9 0.93 perf-profile.self.cycles-pp.can_modify_mm
> > 3.14 +2.1 5.23 +1.5 4.60 perf-profile.self.cycles-pp.mas_walk
> >
> >
> > >
> > >
> > > >
> > > > to avoid the impact of other changes, better to apply the patch upon 8be7258a
> > > > directly.
> > > >
> > > > if you prefer other base for this patch, please let us know. then we will
> > > > supply the results for 4 commits in fact:
> > > >
> > > > this patch
> > > > the base of this patch
> > > > 8be7258a: mseal: add mseal syscall
> > > > ff388fe5c: mseal: wire up mseal syscall
> > > >
> > > > >
> > > > > > >
> > > > > > > Thank you for your time and assistance in helping me on understanding
> > > > > > > this issue.
> > > > > >
> > > > > > due to resource constraint, please expect that we need several days to finish
> > > > > > this test request.
> > > > > No problem.
> > > > >
> > > > > Thanks for your help!
> > > > > -Jeff
> > > > >
> > > > > > >
> > > > > > > Best regards,
> > > > > > > -Jeff
> > > > > > >
> > > > > > > > -Jeff
> > > > > > > >
> > > > > > > > > [1] https://lore.kernel.org/lkml/202408041602.caa0372-oliver.sang@intel.com/
> > > > > > > > > [2] https://github.com/peaktocreek/mmperf/blob/main/run_stress_ng.c
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Jeff Xu (2):
> > > > > > > > > mseal:selftest mremap across VMA boundaries.
> > > > > > > > > mseal: refactor mremap to remove can_modify_mm
> > > > > > > > >
> > > > > > > > > mm/internal.h | 24 ++
> > > > > > > > > mm/mremap.c | 77 +++----
> > > > > > > > > mm/mseal.c | 17 --
> > > > > > > > > tools/testing/selftests/mm/mseal_test.c | 293 +++++++++++++++++++++++-
> > > > > > > > > 4 files changed, 353 insertions(+), 58 deletions(-)
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > > 2.46.0.76.ge559c4bf1a-goog
> > > > > > > > >
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