summarylogtreecommitdiffstats
path: root/PKGBUILD
blob: 019cbb9a31fa7c18e35471e61056727df8f0113a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
# Maintainer: Peter Jung ptr1337 <admin@ptr1337.dev> && Piotr Gorski <piotrgorski@cachyos.org>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>

### BUILD OPTIONS
# Set these variables to ANYTHING that is not null or choose proper variable to enable them

### Selecting CachyOS config
_cachy_config=${_cachy_config-y}

### Selecting the CPU scheduler
# ATTENTION - one of six predefined values should be selected!
# 'bmq' - select 'BitMap Queue CPU scheduler'
# 'pds' - select 'Priority and Deadline based Skip list multiple queue CPU scheduler'
# 'bore' - select 'Burst-Oriented Response Enhancer'
# 'cfs' - select 'Completely Fair Scheduler'
# 'tt' - select 'Task Type Scheduler by Hamad Marri'
# 'hardened' - select 'BORE Scheduler hardened' ## kernel with hardened config and hardening patches with the bore scheduler
# 'cachyos' - select 'EEVDF-BORE Variant Scheduler' EEVDF includes latency nice
# 'eevdf' - select 'EEVDF Scheduler' EEVDF includes latency nice
# 'rt' - select CFS, but includes a series of realtime patches
_cpusched=${_cpusched-tt}

## Apply some suggested sysctl values from the bore developer
## These are adjusted to BORE
_tune_bore=${_tune_bore-}

### Tweak kernel options prior to a build via nconfig
_makenconfig=${_makenconfig-}

### Tweak kernel options prior to a build via menuconfig
_makemenuconfig=${_makemenuconfig-}

### Tweak kernel options prior to a build via xconfig
_makexconfig=${_makexconfig-}

### Tweak kernel options prior to a build via gconfig
_makegconfig=${_makegconfig-}

# NUMA is optimized for multi-socket motherboards.
# A single multi-core CPU actually runs slower with NUMA enabled.
# See, https://bugs.archlinux.org/task/31187
_NUMAdisable=${_NUMAdisable-}

# Compile ONLY used modules to VASTLYreduce the number of modules built
# and the build time.
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db script a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD read the database kept if it exists
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
_localmodcfg=${_localmodcfg-}

# Use the current kernel's .config file
# Enabling this option will use the .config of the RUNNING kernel rather than
# the ARCH defaults. Useful when the package gets updated and you already went
# through the trouble of customizing your config options.  NOT recommended when
# a new kernel is released, but again, convenient for package bumps.
_use_current=${_use_current-}

### Enable KBUILD_CFLAGS -O3
_cc_harder=${_cc_harder-y}

### Enable KBUILD_CFLAGS -Os
## DO NOT SET, THIS IS FOR INTERNAL CI USE ONLY.
_cc_size=${_cc_size-}

### Set this to your number of threads you have in your machine otherwise it will default to 128
_nr_cpus=${_nr_cpus-}

### Set performance governor as default
_per_gov=${_per_gov-}

### Enable TCP_CONG_BBR3
_tcp_bbr3=${_tcp_bbr3-y}

### Running with a 1000HZ, 750Hz, 600 Hz, 500Hz, 300Hz, 250Hz and 100Hz tick rate
_HZ_ticks=${_HZ_ticks-1000}

## Choose between perodic, idle or full
### Full tickless can give higher performances in various cases but, depending on hardware, lower consistency.
_tickrate=${_tickrate-full}

## Choose between full(low-latency), voluntary or server
_preempt=${_preempt-full}

### Enable multigenerational LRU
# ATTENTION - one of three predefined values should be selected!
# 'standard' - enable multigenerational LRU
# 'stats' - enable multigenerational LRU with stats
# 'none' - disable multigenerational LRU
_lru_config=${_lru_config-standard}

### Enable per-VMA locking
# ATTENTION - one of three predefined values should be selected!
# 'standard' - enable per-VMA locking
# 'stats' - enable per-VMA locking with stats
# 'none' - disable per-VMA locking
_vma_config=${_vma_config-standard}

### Transparent Hugepages
# ATTENTION - one of two predefined values should be selected!
# 'always' - always enable THP
# 'madvise' - madvise, prevent applications from allocating more memory resources than necessary
# More infos here:
# https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/performance_tuning_guide/sect-red_hat_enterprise_linux-performance_tuning_guide-configuring_transparent_huge_pages
_hugepage=${_hugepage-always}

## Enable DAMON
_damon=${_damon-}

## Enable Linux Random Number Generator
_lrng_enable=${_lrng_enable-}

# CPU compiler optimizations - Defaults to prompt at kernel config if left empty
# AMD CPUs : "k8" "k8sse3" "k10" "barcelona" "bobcat" "jaguar" "bulldozer" "piledriver" "steamroller" "excavator" "zen" "zen2" "zen3"
# Intel CPUs : "mpsc"(P4 & older Netburst based Xeon) "atom" "core2" "nehalem" "westmere" "silvermont" "sandybridge" "ivybridge" "haswell" "broadwell" "skylake" "skylakex" "cannonlake" "icelake" "goldmont" "goldmontplus" "cascadelake" "cooperlake" "tigerlake" "sapphirerapids" "rocketlake" "alderlake"
# Other options :
# - "native_amd" (use compiler autodetection - Selecting your arch manually in the list above is recommended instead of this option)
# - "native_intel" (use compiler autodetection and will prompt for P6_NOPS - Selecting your arch manually in the list above is recommended instead of this option)
# - "generic" (kernel's default - to share the package between machines with different CPU µarch as long as they are x86-64)
#
# Or use the _use_auto_optimization with _use_auto_optimization=y
_processor_opt=${_processor_opt-}

_use_auto_optimization=${_use_auto_optimization-y}

# disable debug to lower the size of the kernel
_disable_debug=${_disable_debug-}

# Clang LTO mode, only available with the "llvm" compiler - options are "none", "full" or "thin".
# ATTENTION - one of three predefined values should be selected!
# "full: uses 1 thread for Linking, slow and uses more memory, theoretically with the highest performance gains."
# "thin: uses multiple threads, faster and uses less memory, may have a lower runtime performance than Full."
# "none: disable LTO
_use_llvm_lto=${_use_llvm_lto-none}

# Use suffix -lto only when requested by the user
# Enabled by default.
# If you do not want the suffix -lto remove the "y" sign next to the flag.
# https://github.com/CachyOS/linux-cachyos/issues/36
_use_lto_suffix=${_use_lto_suffix-y}

# KCFI is a proposed forward-edge control-flow integrity scheme for
# Clang, which is more suitable for kernel use than the existing CFI
# scheme used by CONFIG_CFI_CLANG. kCFI doesn't require LTO, doesn't
# alter function references to point to a jump table, and won't break
# function address equality.
# ATTENTION!: kCFI is only available in llvm 16
_use_kcfi=${_use_kcfi-}

# Build the zfs module in to the kernel
# WARNING: The ZFS module doesn't build with selected RT sched due to licensing issues.
# If you use ZFS, refrain from building the RT kernel
_build_zfs=${_build_zfs-}

# Builds the nvidia module and package it into a own base
# This does replace the requirement of nvidia-dkms
_build_nvidia=${_build_nvidia-}

# Enable bcachefs
_bcachefs=${_bcachefs-}

if [[ "$_use_llvm_lto" = "thin" || "$_use_llvm_lto" = "full" ]] && [ -n "$_use_lto_suffix" ]; then
    pkgsuffix=${_cpusched}-lto
    pkgbase=linux-$pkgsuffix

else
    pkgsuffix=${_cpusched}
    pkgbase=linux-$pkgsuffix
fi
_major=6.5
_minor=9
#_minorc=$((_minor+1))
#_rcver=rc8
pkgver=${_major}.${_minor}
_stable=${_major}.${_minor}
#_stable=${_major}
#_stablerc=${_major}-${_rcver}
_srcname=linux-${_stable}
#_srcname=linux-${_major}
pkgdesc='Linux TT scheduler Kernel by CachyOS with other patches and improvements'
pkgrel=2
_kernver=$pkgver-$pkgrel
arch=('x86_64' 'x86_64_v3')
url="https://github.com/CachyOS/linux-cachyos"
license=('GPL2')
options=('!strip')
makedepends=('bc' 'libelf' 'pahole' 'cpio' 'perl' 'tar' 'xz' 'zstd' 'gcc' 'gcc-libs' 'glibc' 'binutils' 'make' 'patch' 'python')
# LLVM makedepends
if [[ "$_use_llvm_lto" = "thin" || "$_use_llvm_lto" = "full" ]] || [ -n "$_use_kcfi" ]; then
    makedepends+=(clang llvm lld)
    BUILD_FLAGS=(
        CC=clang
        LD=ld.lld
        LLVM=1
        LLVM_IAS=1
    )
fi
_patchsource="https://raw.githubusercontent.com/cachyos/kernel-patches/master/${_major}"
_nv_ver=545.29.02
_nv_pkg="NVIDIA-Linux-x86_64-${_nv_ver}"
source=(
    "https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.xz"
    "config"
    "auto-cpu-optimization.sh"
    "${_patchsource}/all/0001-cachyos-base-all.patch")

# ZFS support
if [ -n "$_build_zfs" ]; then
    makedepends+=(git)
    source+=("git+https://github.com/cachyos/zfs.git#commit=95785196f26e92d82cf4445654ba84e4a9671c57")
fi

# NVIDIA pre-build module support
if [ -n "$_build_nvidia" ]; then
    source+=("https://us.download.nvidia.com/XFree86/Linux-x86_64/${_nv_ver}/${_nv_pkg}.run")
fi

case "$_cpusched" in
    cachyos) # CachyOS Scheduler (EEVDF + BORE)
        source+=("${_patchsource}/sched/0001-EEVDF-cachy.patch"
                 "${_patchsource}/sched/0001-bore-eevdf.patch");;
    eevdf) # EEVDF Scheduler
        source+=("${_patchsource}/sched/0001-EEVDF-cachy.patch"
                 "${_patchsource}/misc/0001-eevdf-Disable-DELAY_DEQUEUE.patch");;
    pds|bmq) # BMQ/PDS scheduler
        source+=("${_patchsource}/sched/0001-prjc-cachy.patch"
                 linux-cachyos-prjc.install);;
    tt) ## TT Scheduler
        source+=("${_patchsource}/sched/0001-tt-cachy.patch");;
    bore) ## BORE Scheduler
        [ -n "$_tune_bore" ] && source+=("${_patchsource}/misc/0001-bore-tuning-sysctl.patch")
        source+=("${_patchsource}/sched/0001-bore-cachy.patch");;
    rt) ## CFS with RT patches
        source+=("${_patchsource}/misc/0001-rt.patch"
                 linux-cachyos-rt.install);;
    hardened) ## Hardened Patches with BORE Scheduler
        source+=("${_patchsource}/sched/0001-bore-cachy.patch"
                 "${_patchsource}/misc/0001-hardened.patch");;
esac

## bcachefs Support
if [ -n "$_bcachefs" ]; then
    source+=("${_patchsource}/misc/0001-bcachefs.patch")
fi
## lrng patchset
if [ -n "$_lrng_enable" ]; then
    source+=("${_patchsource}/misc/0001-lrng.patch")
fi

export KBUILD_BUILD_HOST=cachyos
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

_die() { error "$@" ; exit; }

prepare() {

    cd ${srcdir}/$_srcname

    echo "Setting version..."
    echo "-$pkgrel" > localversion.10-pkgrel
    echo "${pkgbase#linux}" > localversion.20-pkgname

    local src
    for src in "${source[@]}"; do
        src="${src%%::*}"
        src="${src##*/}"
        src="${src%.zst}"
        [[ $src = *.patch ]] || continue
        echo "Applying patch $src..."
        patch -Np1 < "../$src"
    done

    echo "Setting config..."
    cp ../config .config

    ### Select CPU optimization
    if [ -n "$_processor_opt" ]; then
        MARCH="${_processor_opt^^}"
        MARCH2=M${MARCH}
        scripts/config -k -d CONFIG_GENERIC_CPU
        scripts/config -k -e CONFIG_${MARCH2}
    fi

    ### Use autooptimization
    if [ -n "$_use_auto_optimization" ]; then
        "${srcdir}"/auto-cpu-optimization.sh
    fi

    ### Prevent ZFS and bcachefs building at the same time
    # More infos here: https://github.com/CachyOS/linux-cachyos/issues/152
    if [[ -n "$_bcachefs" && -n "$_build_zfs"  ]]; then
        _die "ZFS and bcachefs support cannot be built at the same time. "
    fi

    ### Selecting CachyOS config
    if [ -n "$_cachy_config" ]; then
        echo "Enabling CachyOS config..."
        scripts/config -e CACHY
    fi

    ### Selecting the CPU scheduler
    [ -z "$_cpusched" ] && _die "The value is empty. Choose the correct one again."

    case "$_cpusched" in
        pds) scripts/config -e SCHED_ALT -d SCHED_BMQ -e SCHED_PDS -e PSI_DEFAULT_DISABLED;;
        bmq) scripts/config -e SCHED_ALT -e SCHED_BMQ -d SCHED_PDS -e PSI_DEFAULT_DISABLED;;
        tt)  scripts/config -e TT_SCHED -e TT_ACCOUNTING_STATS;;
        bore|hardened|cachyos) scripts/config -e SCHED_BORE;;
        cfs|eevdf) ;;
        rt) scripts/config -e PREEMPT_COUNT -e PREEMPTION -d PREEMPT_VOLUNTARY -d PREEMPT -d PREEMPT_NONE -e PREEMPT_RT -e PREEMPT_LAZY -d PREEMPT_DYNAMIC -e HAVE_PREEMPT_LAZY -d PREEMPT_BUILD;;
        *) _die "The value $_cpusched is invalid. Choose the correct one again.";;
    esac

    echo "Selecting ${_cpusched^^} CPU scheduler..."

    ### Enable KCFI
    if [ -n "$_use_kcfi" ]; then
        echo "Enabling kCFI"
        scripts/config -e ARCH_SUPPORTS_CFI_CLANG \
            -e CFI_CLANG
    fi

    ### Select LLVM level
    [ -z "$_use_llvm_lto" ] && _die "The value is empty. Choose the correct one again."

    case "$_use_llvm_lto" in
        thin) scripts/config -e LTO -e LTO_CLANG -e ARCH_SUPPORTS_LTO_CLANG -e ARCH_SUPPORTS_LTO_CLANG_THIN -d LTO_NONE -e HAS_LTO_CLANG -d LTO_CLANG_FULL -e LTO_CLANG_THIN -e HAVE_GCC_PLUGINS;;
        full) scripts/config -e LTO -e LTO_CLANG -e ARCH_SUPPORTS_LTO_CLANG -e ARCH_SUPPORTS_LTO_CLANG_THIN -d LTO_NONE -e HAS_LTO_CLANG -e LTO_CLANG_FULL -d LTO_CLANG_THIN -e HAVE_GCC_PLUGINS;;
        none) scripts/config -e LTO_NONE;;
        *) _die "The value '$_use_llvm_lto' is invalid. Choose the correct one again.";;
    esac

    echo "Selecting '$_use_llvm_lto' LLVM level..."

    ### Select tick rate
    [ -z $_HZ_ticks ] && _die "The value is empty. Choose the correct one again."

    case "$_HZ_ticks" in
        100|250|500|600|750|1000)
            scripts/config -d HZ_300 -e "HZ_${_HZ_ticks}" --set-val HZ "${_HZ_ticks}";;
        300)
            scripts/config -e HZ_300 --set-val HZ 300;;
        *)
            _die "The value $_HZ_ticks is invalid. Choose the correct one again."
    esac

    echo "Setting tick rate to ${_HZ_ticks}Hz..."

    ### Disable NUMA
    if [ -n "$_NUMAdisable" ]; then
        echo "Disabling NUMA from kernel config..."
        scripts/config -d NUMA \
            -d AMD_NUMA \
            -d X86_64_ACPI_NUMA \
            -d NODES_SPAN_OTHER_NODES \
            -d NUMA_EMU \
            -d USE_PERCPU_NUMA_NODE_ID \
            -d ACPI_NUMA \
            -d ARCH_SUPPORTS_NUMA_BALANCING \
            -d NODES_SHIFT \
            -u NODES_SHIFT \
            -d NEED_MULTIPLE_NODES \
            -d NUMA_BALANCING \
            -d NUMA_BALANCING_DEFAULT_ENABLED
    fi

    ### Setting NR_CPUS
    if [[ "$_nr_cpus" -ge 2 && "$_nr_cpus" -le 512 ]]; then
        echo "Setting custom NR_CPUS..."
        scripts/config --set-val NR_CPUS "$_nr_cpus"
    elif [ -z "$_nr_cpus" ]; then
        echo "Setting default NR_CPUS..."
        scripts/config --set-val NR_CPUS 320
    else
        _die "The value '$_nr_cpus' is invalid. Please select a numerical value from 2 to 512..."
    fi

    ### Select performance governor
    if [ -n "$_per_gov" ]; then
        echo "Setting performance governor..."
        scripts/config -d CPU_FREQ_DEFAULT_GOV_SCHEDUTIL \
            -e CPU_FREQ_DEFAULT_GOV_PERFORMANCE
    fi

    ### Select tick type
    [ -z "$_tickrate" ] && _die "The value is empty. Choose the correct one again."

    case "$_tickrate" in
        perodic) scripts/config -d NO_HZ_IDLE -d NO_HZ_FULL -d NO_HZ -d NO_HZ_COMMON -e HZ_PERIODIC;;
        idle) scripts/config -d HZ_PERIODIC -d NO_HZ_FULL -e NO_HZ_IDLE  -e NO_HZ -e NO_HZ_COMMON;;
        full) scripts/config -d HZ_PERIODIC -d NO_HZ_IDLE -d CONTEXT_TRACKING_FORCE -e NO_HZ_FULL_NODEF -e NO_HZ_FULL -e NO_HZ -e NO_HZ_COMMON -e CONTEXT_TRACKING;;
        *) _die "The value '$_tickrate' is invalid. Choose the correct one again.";;
    esac

    echo "Selecting '$_tickrate' tick type..."

    ### Select preempt type

    # We should not set up the PREEMPT for RT kernels
    if [ "$_cpusched" != "rt" ]; then
        [ -z "$_preempt" ] && _die "The value is empty. Choose the correct one again."

        case "$_preempt" in
            full) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -d PREEMPT_VOLUNTARY -e PREEMPT -e PREEMPT_COUNT -e PREEMPTION -e PREEMPT_DYNAMIC;;
            voluntary) scripts/config -e PREEMPT_BUILD -d PREEMPT_NONE -e PREEMPT_VOLUNTARY -d PREEMPT -e PREEMPT_COUNT -e PREEMPTION -d PREEMPT_DYNAMIC;;
            server) scripts/config -e PREEMPT_NONE_BUILD -e PREEMPT_NONE -d PREEMPT_VOLUNTARY -d PREEMPT -d PREEMPTION -d PREEMPT_DYNAMIC;;
            *) _die "The value '$_preempt' is invalid. Choose the correct one again.";;
        esac

        echo "Selecting '$_preempt' preempt type..."
    fi

    ### Enable O3
    if [ -n "$_cc_harder" ] && [ -z "$_cc_size" ]; then
        echo "Enabling KBUILD_CFLAGS -O3..."
        scripts/config -d CC_OPTIMIZE_FOR_PERFORMANCE \
            -e CC_OPTIMIZE_FOR_PERFORMANCE_O3
    fi

    ### Enable Os
    if [ -n "$_cc_size" ] && [ -z "$_cc_harder" ]; then
        echo "Enabling KBUILD_CFLAGS -Os..."
        scripts/config -d CC_OPTIMIZE_FOR_PERFORMANCE \
            -e CONFIG_CC_OPTIMIZE_FOR_SIZE
    fi

    ### Enable bbr3
    if [ -n "$_tcp_bbr3" ]; then
        echo "Disabling TCP_CONG_CUBIC..."
        scripts/config -m TCP_CONG_CUBIC \
            -d DEFAULT_CUBIC \
            -e TCP_CONG_BBR \
            -e DEFAULT_BBR \
            --set-str DEFAULT_TCP_CONG bbr

        # BBR3 doesn't work properly with FQ_CODEL
        echo "Disabling fq_codel by default..."
        scripts/config -m NET_SCH_FQ_CODEL \
            -e NET_SCH_FQ \
            -d DEFAULT_FQ_CODEL \
            -e DEFAULT_FQ \
            --set-str DEFAULT_NET_SCH fq
    fi

    ### Select LRU config
    [ -z "$_lru_config" ] && _die "The value is empty. Choose the correct one again."

    case "$_lru_config" in
        standard) scripts/config -e LRU_GEN -e LRU_GEN_ENABLED -d LRU_GEN_STATS;;
        stats) scripts/config -e LRU_GEN -e LRU_GEN_ENABLED -e LRU_GEN_STATS;;
        none) scripts/config -d LRU_GEN;;
        *) _die "The value '$_lru_config' is invalid. Choose the correct one again.";;
    esac

    echo "Selecting '$_lru_config' LRU_GEN config..."

    ### Select VMA config
    [ -z "$_vma_config" ] && _die "The value is empty. Choose the correct one again."

    case "$_vma_config" in
        standard) scripts/config -e PER_VMA_LOCK -d PER_VMA_LOCK_STATS;;
        stats) scripts/config -e PER_VMA_LOCK -e PER_VMA_LOCK_STATS;;
        none) scripts/config -d PER_VMA_LOCK;;
        *) _die "The value '$_vma_config' is invalid. Choose the correct one again.";;
    esac

    echo "Selecting '$_vma_config' PER_VMA_LOCK config..."

    ### Select THP
    [ -z "$_hugepage" ] && _die "The value is empty. Choose the correct one again."

    case "$_hugepage" in
        always) scripts/config -d TRANSPARENT_HUGEPAGE_MADVISE -e TRANSPARENT_HUGEPAGE_ALWAYS;;
        madvise) scripts/config -d TRANSPARENT_HUGEPAGE_ALWAYS -e TRANSPARENT_HUGEPAGE_MADVISE;;
        *) _die "The value '$_hugepage' is invalid. Choose the correct one again.";;
    esac

    echo "Selecting '$_hugepage' TRANSPARENT_HUGEPAGE config..."

    ### Enable DAMON
    if [ -n "$_damon" ]; then
        echo "Enabling DAMON..."
        scripts/config -e DAMON \
            -e DAMON_VADDR \
            -e DAMON_DBGFS \
            -e DAMON_SYSFS \
            -e DAMON_PADDR \
            -e DAMON_RECLAIM \
            -e DAMON_LRU_SORT
    fi

    ### Enable LRNG
    if [ -n "$_lrng_enable" ]; then
        echo "Enabling Linux Random Number Generator ..."
        scripts/config -d RANDOM_DEFAULT_IMPL \
            -e LRNG \
            -e LRNG_SHA256 \
            -e LRNG_COMMON_DEV_IF \
            -e LRNG_DRNG_ATOMIC \
            -e LRNG_SYSCTL \
            -e LRNG_RANDOM_IF \
            -e LRNG_AIS2031_NTG1_SEEDING_STRATEGY \
            -m LRNG_KCAPI_IF \
            -m LRNG_HWRAND_IF \
            -e LRNG_DEV_IF \
            -e LRNG_RUNTIME_ES_CONFIG \
            -e LRNG_IRQ_DFLT_TIMER_ES \
            -d LRNG_SCHED_DFLT_TIMER_ES \
            -e LRNG_TIMER_COMMON \
            -d LRNG_COLLECTION_SIZE_256 \
            -d LRNG_COLLECTION_SIZE_512 \
            -e LRNG_COLLECTION_SIZE_1024 \
            -d LRNG_COLLECTION_SIZE_2048 \
            -d LRNG_COLLECTION_SIZE_4096 \
            -d LRNG_COLLECTION_SIZE_8192 \
            --set-val LRNG_COLLECTION_SIZE 1024 \
            -e LRNG_HEALTH_TESTS \
            --set-val LRNG_RCT_CUTOFF 31 \
            --set-val LRNG_APT_CUTOFF 325 \
            -e LRNG_IRQ \
            -e LRNG_CONTINUOUS_COMPRESSION_ENABLED \
            -d LRNG_CONTINUOUS_COMPRESSION_DISABLED \
            -e LRNG_ENABLE_CONTINUOUS_COMPRESSION \
            -e LRNG_SWITCHABLE_CONTINUOUS_COMPRESSION \
            --set-val LRNG_IRQ_ENTROPY_RATE 256 \
            -e LRNG_JENT \
            --set-val LRNG_JENT_ENTROPY_RATE 16 \
            -e LRNG_CPU \
            --set-val LRNG_CPU_FULL_ENT_MULTIPLIER 1 \
            --set-val LRNG_CPU_ENTROPY_RATE 8 \
            -e LRNG_SCHED \
            --set-val LRNG_SCHED_ENTROPY_RATE 4294967295 \
            -e LRNG_DRNG_CHACHA20 \
            -m LRNG_DRBG \
            -m LRNG_DRNG_KCAPI \
            -e LRNG_SWITCH \
            -e LRNG_SWITCH_HASH \
            -m LRNG_HASH_KCAPI \
            -e LRNG_SWITCH_DRNG \
            -m LRNG_SWITCH_DRBG \
            -m LRNG_SWITCH_DRNG_KCAPI \
            -e LRNG_DFLT_DRNG_CHACHA20 \
            -d LRNG_DFLT_DRNG_DRBG \
            -d LRNG_DFLT_DRNG_KCAPI \
            -e LRNG_TESTING_MENU \
            -d LRNG_RAW_HIRES_ENTROPY \
            -d LRNG_RAW_JIFFIES_ENTROPY \
            -d LRNG_RAW_IRQ_ENTROPY \
            -d LRNG_RAW_RETIP_ENTROPY \
            -d LRNG_RAW_REGS_ENTROPY \
            -d LRNG_RAW_ARRAY \
            -d LRNG_IRQ_PERF \
            -d LRNG_RAW_SCHED_HIRES_ENTROPY \
            -d LRNG_RAW_SCHED_PID_ENTROPY \
            -d LRNG_RAW_SCHED_START_TIME_ENTROPY \
            -d LRNG_RAW_SCHED_NVCSW_ENTROPY \
            -d LRNG_SCHED_PERF \
            -d LRNG_ACVT_HASH \
            -d LRNG_RUNTIME_MAX_WO_RESEED_CONFIG \
            -d LRNG_TEST_CPU_ES_COMPRESSION \
            -e LRNG_SELFTEST \
            -d LRNG_SELFTEST_PANIC \
            -d LRNG_RUNTIME_FORCE_SEEDING_DISABLE
    fi

    ### Disable DEBUG
    if [ -n "$_disable_debug" ]; then
        scripts/config -d DEBUG_INFO \
            -d DEBUG_INFO_BTF \
            -d DEBUG_INFO_DWARF4 \
            -d DEBUG_INFO_DWARF5 \
            -d PAHOLE_HAS_SPLIT_BTF \
            -d DEBUG_INFO_BTF_MODULES \
            -d SLUB_DEBUG \
            -d PM_DEBUG \
            -d PM_ADVANCED_DEBUG \
            -d PM_SLEEP_DEBUG \
            -d ACPI_DEBUG \
            -d SCHED_DEBUG \
            -d LATENCYTOP \
            -d DEBUG_PREEMPT
    fi

    echo "Enable USER_NS_UNPRIVILEGED"
    scripts/config -e USER_NS

    ### Optionally use running kernel's config
    # code originally by nous; http://aur.archlinux.org/packages.php?ID=40191
    if [ -n "$_use_current" ]; then
        if [[ -s /proc/config.gz ]]; then
            echo "Extracting config from /proc/config.gz..."
            # modprobe configs
            zcat /proc/config.gz > ./.config
        else
            warning "Your kernel was not compiled with IKPROC!"
            warning "You cannot read the current config!"
            warning "Aborting!"
            exit
        fi
    fi


    ### Optionally load needed modules for the make localmodconfig
    # See https://aur.archlinux.org/packages/modprobed-db
    if [ -n "$_localmodcfg" ]; then
        if [ -e $HOME/.config/modprobed.db ]; then
            echo "Running Steven Rostedt's make localmodconfig now"
            make ${BUILD_FLAGS[*]} LSMOD=$HOME/.config/modprobed.db localmodconfig
        else
            echo "No modprobed.db data found"
            exit
        fi
    fi

    ### Rewrite configuration
    echo "Rewrite configuration..."
    make ${BUILD_FLAGS[*]} prepare
    yes "" | make ${BUILD_FLAGS[*]} config >/dev/null
    diff -u ../config .config || :

    ### Prepared version
    make -s kernelrelease > version
    echo "Prepared $pkgbase version $(<version)"

    ### Running make nconfig
    [[ -z "$_makenconfig" ]] ||  make ${BUILD_FLAGS[*]} nconfig

    ### Running make menuconfig
    [[ -z "$_makemenuconfig" ]] ||  make ${BUILD_FLAGS[*]} menuconfig

    ### Running make xconfig
    [[ -z "$_makexconfig" ]] ||  make ${BUILD_FLAGS[*]} xconfig

    ### Running make gconfig
    [[ -z "$_makegconfig" ]] ||  make ${BUILD_FLAGS[*]} gconfig

    ### Save configuration for later reuse
    echo "Save configuration for later reuse..."
    cat .config > "${startdir}/config-${pkgver}-${pkgrel}${pkgbase#linux}"

    if [ -n "$_build_nvidia" ]; then
        cd "${srcdir}"
        sh "${_nv_pkg}.run" --extract-only
    fi
}

build() {
    cd ${srcdir}/${_srcname}
    make ${BUILD_FLAGS[*]} -j$(nproc) all

    if [ -n "$_build_nvidia" ]; then
        cd "${srcdir}/${_nv_pkg}/kernel"
        local MODULE_FLAGS=(
           KERNEL_UNAME="${pkgver}-${pkgsuffix}"
           IGNORE_PREEMPT_RT_PRESENCE=1
           NV_EXCLUDE_BUILD_MODULES='__EXCLUDE_MODULES'
           SYSSRC="${srcdir}/${_srcname}"
           SYSOUT="${srcdir}/${_srcname}"
        )
        make ${BUILD_FLAGS[*]} ${MODULE_FLAGS[*]} -j$(nproc) modules
    fi

    if [ -n "$_build_zfs" ]; then
        cd ${srcdir}/"zfs"

        local CONFIGURE_FLAGS=()
        [ "$_use_llvm_lto" != "none" ] && CONFIGURE_FLAGS+=("KERNEL_LLVM=1")

        ./autogen.sh
        sed -i "s|\$(uname -r)|${pkgver}-${pkgsuffix}|g" configure
        ./configure ${CONFIGURE_FLAGS[*]} --prefix=/usr --sysconfdir=/etc --sbindir=/usr/bin \
            --libdir=/usr/lib --datadir=/usr/share --includedir=/usr/include \
            --with-udevdir=/lib/udev --libexecdir=/usr/lib/zfs --with-config=kernel \
            --with-linux=${srcdir}/$_srcname
        make ${BUILD_FLAGS[*]}
    fi
}

_package() {
    pkgdesc="The $pkgdesc kernel and modules"
    depends=('coreutils' 'kmod' 'initramfs')
    optdepends=('wireless-regdb: to set the correct wireless channels of your country'
                'linux-firmware: firmware images needed for some devices'
                'modprobed-db: Keeps track of EVERY kernel module that has ever been probed - useful for those of us who make localmodconfig'
                'uksmd: Userspace KSM helper daemon')
    provides=(VIRTUALBOX-GUEST-MODULES WIREGUARD-MODULE KSMBD-MODULE UKSMD-BUILTIN)

    cd ${srcdir}/$_srcname

    local modulesdir="$pkgdir/usr/lib/modules/$(<version)"

    echo "Installing boot image..."
    # systemd expects to find the kernel here to allow hibernation
    # https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
    install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"

    # Used by mkinitcpio to name the kernel
    echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

    echo "Installing modules..."
    ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
        DEPMOD=/doesnt/exist  modules_install  # Suppress depmod

    # remove build and source links
    rm "$modulesdir"/{source,build}
}

_package-headers() {
    pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
    depends=('pahole' linux-${pkgsuffix} )

    cd ${srcdir}/${_srcname}
    local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

    echo "Installing build files..."
    install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
        localversion.* version vmlinux
    install -Dt "$builddir/kernel" -m644 kernel/Makefile
    install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
    cp -t "$builddir" -a scripts

    # required when STACK_VALIDATION is enabled
    install -Dt "$builddir/tools/objtool" tools/objtool/objtool

    # required when DEBUG_INFO_BTF_MODULES is enabled
    if [ -f tools/bpf/resolve_btfids/resolve_btfids ]; then
        install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids
    fi

    echo "Installing headers..."
    cp -t "$builddir" -a include
    cp -t "$builddir/arch/x86" -a arch/x86/include
    install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s

    install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
    install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

    # https://bugs.archlinux.org/task/13146
    install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

    # https://bugs.archlinux.org/task/20402
    install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
    install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
    install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h

    # https://bugs.archlinux.org/task/71392
    install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h

    echo "Installing KConfig files..."
    find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

    echo "Removing unneeded architectures..."
    local arch
    for arch in "$builddir"/arch/*/; do
        [[ $arch = */x86/ ]] && continue
        echo "Removing $(basename "$arch")"
        rm -r "$arch"
    done

    echo "Removing documentation..."
    rm -r "$builddir/Documentation"

    echo "Removing broken symlinks..."
    find -L "$builddir" -type l -printf 'Removing %P\n' -delete

    echo "Removing loose objects..."
    find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

    echo "Stripping build tools..."
    local file
    while read -rd '' file; do
        case "$(file -Sib "$file")" in
            application/x-sharedlib\;*)      # Libraries (.so)
                strip -v $STRIP_SHARED "$file" ;;
            application/x-archive\;*)        # Libraries (.a)
                strip -v $STRIP_STATIC "$file" ;;
            application/x-executable\;*)     # Binaries
                strip -v $STRIP_BINARIES "$file" ;;
            application/x-pie-executable\;*) # Relocatable binaries
                strip -v $STRIP_SHARED "$file" ;;
        esac
    done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)

    echo "Stripping vmlinux..."
    strip -v $STRIP_STATIC "$builddir/vmlinux"

    echo "Adding symlink..."
    mkdir -p "$pkgdir/usr/src"
    ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}

_package-zfs(){
    pkgdesc="zfs module for the $pkgdesc kernel"
    depends=('pahole' linux-$pkgsuffix=$_kernver)
    provides=('ZFS-MODULE')

    cd ${srcdir}/"zfs"
    install -dm755 "$pkgdir/usr/lib/modules/${_kernver}-${pkgsuffix}"
    install -m644 module/*.ko "$pkgdir/usr/lib/modules/${_kernver}-${pkgsuffix}"
    find "$pkgdir" -name '*.ko' -exec zstd --rm -10 {} +
    #  sed -i -e "s/EXTRAMODULES='.*'/EXTRAMODULES='${pkgver}-${pkgbase}'/" "$startdir/zfs.install"
}

_package-nvidia(){
    pkgdesc="nvidia module of ${_nv_ver} driver for the linux-$pkgsuffix kernel"
    depends=("linux-$pkgsuffix=$_kernver" "nvidia-utils=${_nv_ver}" "libglvnd")
    provides=('NVIDIA-MODULE')
    license=('custom')

    cd "${srcdir}/${_nv_pkg}/"
    install -dm755 "$pkgdir/usr/lib/modules/${_kernver}-${pkgsuffix}"
    install -m644 kernel/*.ko "$pkgdir/usr/lib/modules/${_kernver}-${pkgsuffix}"
    install -Dt "$pkgdir/usr/share/licenses/${pkgname}" -m644 LICENSE
    find "$pkgdir" -name '*.ko' -exec zstd --rm -10 {} +
}

pkgname=("$pkgbase" "$pkgbase-headers")
[ -n "$_build_zfs" ] && pkgname+=("$pkgbase-zfs")
[ -n "$_build_nvidia" ] && pkgname+=("$pkgbase-nvidia")
for _p in "${pkgname[@]}"; do
    eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
    }"
done

b2sums=('fb5fcc0dc79e2f615a550283481492a8185414d65369cbe805909112735593e5fc8bdbd482a347dc4cb3dcac979bea21cd03c503932e9321856eeea685d31c65'
        '0d15075ccc31eee90b4a71def492279660fd02f52b227f06b40cf4578be730f955121922dc2cd1f2373df4174e92bb50a6f92d79f1b2104d982c6c10b4ac7443'
        '11d2003b7d71258c4ca71d71c6b388f00fe9a2ddddc0270e304148396dadfd787a6cac1363934f37d0bfb098c7f5851a02ecb770e9663ffe57ff60746d532bd0'
        'a939d934bdea2a933a0dc5d59ef5049b228d71f642ede974f307ad53e7a725d0c5191213d3ad9b8691c7dd4c8510cf67c2689d4dda016ce96394f26768b01832'
        '7c95ca8afa51c7b02b38d48745ec12427024b48d6bb06c1e31deaf09f95c1dacfe52aace2e874b28bd737e1f10a57bc41020e2a74ea929383c8127cb373de684')