MYN - 2017/07/16 23:56 / Linux 4.12.0 -> 4.13-rc1

2017/07/16 23:56 / Linux 4.12.0 -> 4.13-rc1

4.13-rc1が出ているので .config がどう変更されるのか見てみた．ターゲットは VMware on Windows 上の Guest で CPU は i7-3687U．以下 - は削除されたもの，+ は追加されたもの m->n 等は値の変化を示す．

+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y

genirq: Introduce effective affinity mask
x86/apic: Implement effective irq mask update
```
Selected by: X86 [=y] && SMP [=y]
```
+CONFIG_GENERIC_IRQ_MIGRATION=y

genirq: Introduce generic irq migration for cpu hotunplug
x86/irq: Use irq_migrate_all_off_this_cpu()
```
Selected by: X86 [=y] && SMP [=y]
```
+CONFIG_SLAB_MERGE_DEFAULT=y

mm: allow slab_nomerge to be set at build time

y にしておく．あと，Debian GNU/Linux の kernel-image にならって SLAB allocator として CONFIG_SLAB を選んでいたが，CONFIG_SLUB が kernel の default のようなのでCONFIG_SLUB=yにすることにした．
+CONFIG_THIN_ARCHIVES=y

kbuild: allow architectures to use thin archives instead of ld -r
kbuild: thin archives make default for all archs
```
def_bool y
```
+CONFIG_HAVE_GENERIC_GUP=y

x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
```
def_bool y
```
+CONFIG_ARCH_WANTS_THP_SWAP=y
+CONFIG_THP_SWAP=y

mm, THP, swap: delay splitting THP during swap out
+CONFIG_ARCH_HAS_ZONE_DEVICE=y

mm, x86: Add ARCH_HAS_ZONE_DEVICE to Kconfig
```
Selected by: X86 [=y] && X86_64 [=y]
```
+CONFIG_PCI_LOCKLESS_CONFIG=y

x86/PCI: Select CONFIG_PCI_LOCKLESS_CONFIG
```
Selected by: X86 [=y]
```
+CONFIG_DRM_PANEL_BRIDGE=y

drm/bridge: Refactor out the panel wrapper from the lvds-encoder bridge.
```
def_bool y
Selects: DRM_PANEL [=y]
```
不要な気もするが依存関係で y になる．
+CONFIG_DRM_PANEL=y

上で Select される．
+CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y

x86, uaccess: introduce copy_from_iter_flushcache for pmem / cache-bypass operations
```
Selected by: X86 [=y] && X86_64 [=y]
```
-CONFIG_ARCH_HAS_GIGANTIC_PAGE=y

mm/hugetlb: clean up ARCH_HAS_GIGANTIC_PAGE
```
Selected by: X86_64 [=y] && 64BIT [=y] && (MEMORY_ISOLATION [=n] && COMPACTION [=y] || CMA [=n])
```
Memory の hotplug 等を disable していて，CMA (Contiguous Memory Allocator) も n なので，選択されなくなった．
+CONFIG_ARCH_HAS_FORTIFY_SOURCE=y

include/linux/string.h: add the option of fortified string.h functions
```
Selected by: X86
```
+CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y

kernel/watchdog: split up config options
```
Selected by: X86 [=y] && HAVE_PERF_EVENTS_NMI [=y]
```
+CONFIG_RTC_NVMEM=y

rtc: add generic nvmem support

Selects: NVMEM [=y] and default RTC_CLASS
+CONFIG_NVMEM=y

上で Select される．

やるきなし

2017/07/16 23:56 / Linux 4.12.0 -> 4.13-rc1

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