path: root/sys-kernel/linux-image-redcore-lts/files/0002-Make-preemptible-kernel-default.patch

From e8e37da685f7988182d7920a711e00dd2457af65 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Sat, 29 Oct 2016 11:20:37 +1100
Subject: [PATCH 02/16] Make preemptible kernel default.

Make full preempt default on all arches.
---
 arch/arc/configs/tb10x_defconfig                | 2 +-
 arch/arm/configs/bcm2835_defconfig              | 2 +-
 arch/arm/configs/imx_v6_v7_defconfig            | 2 +-
 arch/arm/configs/mps2_defconfig                 | 2 +-
 arch/arm/configs/mxs_defconfig                  | 2 +-
 arch/blackfin/configs/BF518F-EZBRD_defconfig    | 2 +-
 arch/blackfin/configs/BF526-EZBRD_defconfig     | 2 +-
 arch/blackfin/configs/BF527-EZKIT-V2_defconfig  | 2 +-
 arch/blackfin/configs/BF527-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BF527-TLL6527M_defconfig  | 2 +-
 arch/blackfin/configs/BF533-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BF533-STAMP_defconfig     | 2 +-
 arch/blackfin/configs/BF537-STAMP_defconfig     | 2 +-
 arch/blackfin/configs/BF538-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BF548-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BF561-ACVILON_defconfig   | 2 +-
 arch/blackfin/configs/BF561-EZKIT-SMP_defconfig | 2 +-
 arch/blackfin/configs/BF561-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BF609-EZKIT_defconfig     | 2 +-
 arch/blackfin/configs/BlackStamp_defconfig      | 2 +-
 arch/blackfin/configs/CM-BF527_defconfig        | 2 +-
 arch/blackfin/configs/PNAV-10_defconfig         | 2 +-
 arch/blackfin/configs/SRV1_defconfig            | 2 +-
 arch/blackfin/configs/TCM-BF518_defconfig       | 2 +-
 arch/mips/configs/fuloong2e_defconfig           | 3 ++-
 arch/mips/configs/gpr_defconfig                 | 3 ++-
 arch/mips/configs/ip22_defconfig                | 3 ++-
 arch/mips/configs/ip28_defconfig                | 3 ++-
 arch/mips/configs/jazz_defconfig                | 3 ++-
 arch/mips/configs/mtx1_defconfig                | 3 ++-
 arch/mips/configs/nlm_xlr_defconfig             | 2 +-
 arch/mips/configs/pic32mzda_defconfig           | 2 +-
 arch/mips/configs/pistachio_defconfig           | 2 +-
 arch/mips/configs/pnx8335_stb225_defconfig      | 2 +-
 arch/mips/configs/rm200_defconfig               | 3 ++-
 arch/parisc/configs/712_defconfig               | 2 +-
 arch/parisc/configs/c3000_defconfig             | 2 +-
 arch/parisc/configs/default_defconfig           | 2 +-
 arch/powerpc/configs/c2k_defconfig              | 2 +-
 arch/powerpc/configs/ppc6xx_defconfig           | 2 +-
 arch/score/configs/spct6600_defconfig           | 2 +-
 arch/sh/configs/se7712_defconfig                | 2 +-
 arch/sh/configs/se7721_defconfig                | 2 +-
 arch/sh/configs/titan_defconfig                 | 2 +-
 arch/sparc/configs/sparc64_defconfig            | 2 +-
 arch/tile/configs/tilegx_defconfig              | 2 +-
 arch/tile/configs/tilepro_defconfig             | 2 +-
 arch/x86/configs/i386_defconfig                 | 2 +-
 arch/x86/configs/x86_64_defconfig               | 2 +-
 kernel/Kconfig.preempt                          | 7 ++++---
 50 files changed, 60 insertions(+), 52 deletions(-)

diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index f30182549395..42910f628869 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -28,7 +28,7 @@ CONFIG_ARC_PLAT_TB10X=y
 CONFIG_ARC_CACHE_LINE_SHIFT=5
 CONFIG_HZ=250
 CONFIG_ARC_BUILTIN_DTB_NAME="abilis_tb100_dvk"
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/arm/configs/bcm2835_defconfig b/arch/arm/configs/bcm2835_defconfig
index 43dab4890ad3..44a52166ca5e 100644
--- a/arch/arm/configs/bcm2835_defconfig
+++ b/arch/arm/configs/bcm2835_defconfig
@@ -29,7 +29,7 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_ARCH_MULTI_V6=y
 CONFIG_ARCH_BCM=y
 CONFIG_ARCH_BCM2835=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_AEABI=y
 CONFIG_KSM=y
 CONFIG_CLEANCACHE=y
diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 32acac9ab81a..1482bb312987 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -47,7 +47,7 @@ CONFIG_PCI_MSI=y
 CONFIG_PCI_IMX6=y
 CONFIG_SMP=y
 CONFIG_ARM_PSCI=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_AEABI=y
 CONFIG_HIGHMEM=y
 CONFIG_CMA=y
diff --git a/arch/arm/configs/mps2_defconfig b/arch/arm/configs/mps2_defconfig
index 0bcdec7cc169..10ceaefa51e0 100644
--- a/arch/arm/configs/mps2_defconfig
+++ b/arch/arm/configs/mps2_defconfig
@@ -18,7 +18,7 @@ CONFIG_ARCH_MPS2=y
 CONFIG_SET_MEM_PARAM=y
 CONFIG_DRAM_BASE=0x21000000
 CONFIG_DRAM_SIZE=0x1000000
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_ATAGS is not set
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
diff --git a/arch/arm/configs/mxs_defconfig b/arch/arm/configs/mxs_defconfig
index e5822ab01b7d..3e77e02f678f 100644
--- a/arch/arm/configs/mxs_defconfig
+++ b/arch/arm/configs/mxs_defconfig
@@ -27,7 +27,7 @@ CONFIG_BLK_DEV_INTEGRITY=y
 # CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_MXS=y
 # CONFIG_ARM_THUMB is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_AEABI=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/blackfin/configs/BF518F-EZBRD_defconfig b/arch/blackfin/configs/BF518F-EZBRD_defconfig
index 99c00d835f47..39b91dfa55b5 100644
--- a/arch/blackfin/configs/BF518F-EZBRD_defconfig
+++ b/arch/blackfin/configs/BF518F-EZBRD_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF518=y
 CONFIG_IRQ_TIMER0=12
 # CONFIG_CYCLES_CLOCKSOURCE is not set
diff --git a/arch/blackfin/configs/BF526-EZBRD_defconfig b/arch/blackfin/configs/BF526-EZBRD_defconfig
index e66ba31ef84d..675cadb3a0c4 100644
--- a/arch/blackfin/configs/BF526-EZBRD_defconfig
+++ b/arch/blackfin/configs/BF526-EZBRD_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF526=y
 CONFIG_IRQ_TIMER0=12
 CONFIG_BFIN526_EZBRD=y
diff --git a/arch/blackfin/configs/BF527-EZKIT-V2_defconfig b/arch/blackfin/configs/BF527-EZKIT-V2_defconfig
index 0207c588c19f..4c517c443af5 100644
--- a/arch/blackfin/configs/BF527-EZKIT-V2_defconfig
+++ b/arch/blackfin/configs/BF527-EZKIT-V2_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF527=y
 CONFIG_BF_REV_0_2=y
 CONFIG_BFIN527_EZKIT_V2=y
diff --git a/arch/blackfin/configs/BF527-EZKIT_defconfig b/arch/blackfin/configs/BF527-EZKIT_defconfig
index 99c131ba7d90..bf8df3e6cf02 100644
--- a/arch/blackfin/configs/BF527-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF527-EZKIT_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF527=y
 CONFIG_BF_REV_0_1=y
 CONFIG_IRQ_USB_INT0=11
diff --git a/arch/blackfin/configs/BF527-TLL6527M_defconfig b/arch/blackfin/configs/BF527-TLL6527M_defconfig
index cdeb51856f26..0220b3b15c53 100644
--- a/arch/blackfin/configs/BF527-TLL6527M_defconfig
+++ b/arch/blackfin/configs/BF527-TLL6527M_defconfig
@@ -21,7 +21,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_LBDAF is not set
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF527=y
 CONFIG_BF_REV_0_2=y
 CONFIG_BFIN527_TLL6527M=y
diff --git a/arch/blackfin/configs/BF533-EZKIT_defconfig b/arch/blackfin/configs/BF533-EZKIT_defconfig
index ed7d2c096739..6023e3fd2c48 100644
--- a/arch/blackfin/configs/BF533-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF533-EZKIT_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BFIN533_EZKIT=y
 CONFIG_TIMER0=11
 CONFIG_CLKIN_HZ=27000000
diff --git a/arch/blackfin/configs/BF533-STAMP_defconfig b/arch/blackfin/configs/BF533-STAMP_defconfig
index 0c241f4d28d7..f5cd0f18b711 100644
--- a/arch/blackfin/configs/BF533-STAMP_defconfig
+++ b/arch/blackfin/configs/BF533-STAMP_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_TIMER0=11
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_NOMMU_INITIAL_TRIM_EXCESS=0
diff --git a/arch/blackfin/configs/BF537-STAMP_defconfig b/arch/blackfin/configs/BF537-STAMP_defconfig
index e5360b30e39a..48085fde7f9e 100644
--- a/arch/blackfin/configs/BF537-STAMP_defconfig
+++ b/arch/blackfin/configs/BF537-STAMP_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF537=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_NOMMU_INITIAL_TRIM_EXCESS=0
diff --git a/arch/blackfin/configs/BF538-EZKIT_defconfig b/arch/blackfin/configs/BF538-EZKIT_defconfig
index 60f6fb86125c..12deeaaef3cb 100644
--- a/arch/blackfin/configs/BF538-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF538-EZKIT_defconfig
@@ -21,7 +21,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF538=y
 CONFIG_IRQ_TIMER0=12
 CONFIG_IRQ_TIMER1=12
diff --git a/arch/blackfin/configs/BF548-EZKIT_defconfig b/arch/blackfin/configs/BF548-EZKIT_defconfig
index 38cb17d218d4..6a68ffc55b5a 100644
--- a/arch/blackfin/configs/BF548-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF548-EZKIT_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF548_std=y
 CONFIG_IRQ_TIMER0=11
 # CONFIG_CYCLES_CLOCKSOURCE is not set
diff --git a/arch/blackfin/configs/BF561-ACVILON_defconfig b/arch/blackfin/configs/BF561-ACVILON_defconfig
index 78f6bc79f910..e9f3ba783a4e 100644
--- a/arch/blackfin/configs/BF561-ACVILON_defconfig
+++ b/arch/blackfin/configs/BF561-ACVILON_defconfig
@@ -20,7 +20,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_LBDAF is not set
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF561=y
 CONFIG_BF_REV_0_5=y
 CONFIG_IRQ_TIMER0=10
diff --git a/arch/blackfin/configs/BF561-EZKIT-SMP_defconfig b/arch/blackfin/configs/BF561-EZKIT-SMP_defconfig
index fac8bb578249..89b75a6c3fab 100644
--- a/arch/blackfin/configs/BF561-EZKIT-SMP_defconfig
+++ b/arch/blackfin/configs/BF561-EZKIT-SMP_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF561=y
 CONFIG_SMP=y
 CONFIG_IRQ_TIMER0=10
diff --git a/arch/blackfin/configs/BF561-EZKIT_defconfig b/arch/blackfin/configs/BF561-EZKIT_defconfig
index 2a2e4d0cebc1..67b3d2f419ba 100644
--- a/arch/blackfin/configs/BF561-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF561-EZKIT_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF561=y
 CONFIG_IRQ_TIMER0=10
 CONFIG_CLKIN_HZ=30000000
diff --git a/arch/blackfin/configs/BF609-EZKIT_defconfig b/arch/blackfin/configs/BF609-EZKIT_defconfig
index 3ce77f07208a..8cc75d4218fb 100644
--- a/arch/blackfin/configs/BF609-EZKIT_defconfig
+++ b/arch/blackfin/configs/BF609-EZKIT_defconfig
@@ -20,7 +20,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF609=y
 CONFIG_PINT1_ASSIGN=0x01010000
 CONFIG_PINT2_ASSIGN=0x07000101
diff --git a/arch/blackfin/configs/BlackStamp_defconfig b/arch/blackfin/configs/BlackStamp_defconfig
index f4a9200e1ab1..9faf0ec7007f 100644
--- a/arch/blackfin/configs/BlackStamp_defconfig
+++ b/arch/blackfin/configs/BlackStamp_defconfig
@@ -17,7 +17,7 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF532=y
 CONFIG_BF_REV_0_5=y
 CONFIG_BLACKSTAMP=y
diff --git a/arch/blackfin/configs/CM-BF527_defconfig b/arch/blackfin/configs/CM-BF527_defconfig
index 1902bb05d086..4a1ad4fd7bb2 100644
--- a/arch/blackfin/configs/CM-BF527_defconfig
+++ b/arch/blackfin/configs/CM-BF527_defconfig
@@ -19,7 +19,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF527=y
 CONFIG_BF_REV_0_1=y
 CONFIG_IRQ_TIMER0=12
diff --git a/arch/blackfin/configs/PNAV-10_defconfig b/arch/blackfin/configs/PNAV-10_defconfig
index c7926812971c..9d787e28bbe8 100644
--- a/arch/blackfin/configs/PNAV-10_defconfig
+++ b/arch/blackfin/configs/PNAV-10_defconfig
@@ -15,7 +15,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF537=y
 CONFIG_IRQ_TIMER0=12
 CONFIG_PNAV10=y
diff --git a/arch/blackfin/configs/SRV1_defconfig b/arch/blackfin/configs/SRV1_defconfig
index 23fdc57d657a..225df32dc9a8 100644
--- a/arch/blackfin/configs/SRV1_defconfig
+++ b/arch/blackfin/configs/SRV1_defconfig
@@ -13,7 +13,7 @@ CONFIG_MMAP_ALLOW_UNINITIALIZED=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_IOSCHED_DEADLINE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF537=y
 CONFIG_IRQ_TIMER0=12
 CONFIG_BOOT_LOAD=0x400000
diff --git a/arch/blackfin/configs/TCM-BF518_defconfig b/arch/blackfin/configs/TCM-BF518_defconfig
index e28959479fe0..425c24e43c34 100644
--- a/arch/blackfin/configs/TCM-BF518_defconfig
+++ b/arch/blackfin/configs/TCM-BF518_defconfig
@@ -23,7 +23,7 @@ CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_IOSCHED_DEADLINE is not set
 # CONFIG_IOSCHED_CFQ is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BF518=y
 CONFIG_BF_REV_0_1=y
 CONFIG_BFIN518F_TCM=y
diff --git a/arch/mips/configs/fuloong2e_defconfig b/arch/mips/configs/fuloong2e_defconfig
index 499f51498ecb..f7cb39b0662c 100644
--- a/arch/mips/configs/fuloong2e_defconfig
+++ b/arch/mips/configs/fuloong2e_defconfig
@@ -2,7 +2,8 @@ CONFIG_MACH_LOONGSON64=y
 CONFIG_64BIT=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 CONFIG_LOCALVERSION="-fuloong2e"
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
diff --git a/arch/mips/configs/gpr_defconfig b/arch/mips/configs/gpr_defconfig
index 55438fc9991e..db03ef4f737d 100644
--- a/arch/mips/configs/gpr_defconfig
+++ b/arch/mips/configs/gpr_defconfig
@@ -1,7 +1,8 @@
 CONFIG_MIPS_ALCHEMY=y
 CONFIG_MIPS_GPR=y
 CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
diff --git a/arch/mips/configs/ip22_defconfig b/arch/mips/configs/ip22_defconfig
index 83e8fe2064aa..93e7b167433b 100644
--- a/arch/mips/configs/ip22_defconfig
+++ b/arch/mips/configs/ip22_defconfig
@@ -3,7 +3,8 @@ CONFIG_CPU_R5000=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_HZ_1000=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
diff --git a/arch/mips/configs/ip28_defconfig b/arch/mips/configs/ip28_defconfig
index d0a4c2cfacf8..6f0600e99c25 100644
--- a/arch/mips/configs/ip28_defconfig
+++ b/arch/mips/configs/ip28_defconfig
@@ -1,6 +1,7 @@
 CONFIG_SGI_IP28=y
 CONFIG_ARC_CONSOLE=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
diff --git a/arch/mips/configs/jazz_defconfig b/arch/mips/configs/jazz_defconfig
index 9ad1c94376c8..1d62ce7ff5dc 100644
--- a/arch/mips/configs/jazz_defconfig
+++ b/arch/mips/configs/jazz_defconfig
@@ -1,6 +1,7 @@
 CONFIG_MACH_JAZZ=y
 CONFIG_OLIVETTI_M700=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_BSD_PROCESS_ACCT=y
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index c3d0d0a6e044..aa3426d5f7d7 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -1,6 +1,7 @@
 CONFIG_MIPS_ALCHEMY=y
 CONFIG_MIPS_MTX1=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
diff --git a/arch/mips/configs/nlm_xlr_defconfig b/arch/mips/configs/nlm_xlr_defconfig
index 1e18fd7de209..b514e91e5426 100644
--- a/arch/mips/configs/nlm_xlr_defconfig
+++ b/arch/mips/configs/nlm_xlr_defconfig
@@ -5,7 +5,7 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
 CONFIG_SMP=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_KEXEC=y
 CONFIG_CROSS_COMPILE=""
 # CONFIG_LOCALVERSION_AUTO is not set
diff --git a/arch/mips/configs/pic32mzda_defconfig b/arch/mips/configs/pic32mzda_defconfig
index 52192c632ae8..96b087498dab 100644
--- a/arch/mips/configs/pic32mzda_defconfig
+++ b/arch/mips/configs/pic32mzda_defconfig
@@ -1,7 +1,7 @@
 CONFIG_MACH_PIC32=y
 CONFIG_DTB_PIC32_MZDA_SK=y
 CONFIG_HZ_100=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_SECCOMP is not set
 CONFIG_SYSVIPC=y
 CONFIG_NO_HZ=y
diff --git a/arch/mips/configs/pistachio_defconfig b/arch/mips/configs/pistachio_defconfig
index b22a3cf149b6..cfffca3d37f4 100644
--- a/arch/mips/configs/pistachio_defconfig
+++ b/arch/mips/configs/pistachio_defconfig
@@ -5,7 +5,7 @@ CONFIG_MIPS_CPS=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 CONFIG_ZSMALLOC=y
 CONFIG_NR_CPUS=4
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_DEFAULT_HOSTNAME="localhost"
 CONFIG_SYSVIPC=y
diff --git a/arch/mips/configs/pnx8335_stb225_defconfig b/arch/mips/configs/pnx8335_stb225_defconfig
index 81b5eb89446c..19f8cea849a1 100644
--- a/arch/mips/configs/pnx8335_stb225_defconfig
+++ b/arch/mips/configs/pnx8335_stb225_defconfig
@@ -3,7 +3,7 @@ CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_HZ_128=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_SECCOMP is not set
 # CONFIG_LOCALVERSION_AUTO is not set
 # CONFIG_SWAP is not set
diff --git a/arch/mips/configs/rm200_defconfig b/arch/mips/configs/rm200_defconfig
index 99679e514042..2ced507a8ba7 100644
--- a/arch/mips/configs/rm200_defconfig
+++ b/arch/mips/configs/rm200_defconfig
@@ -2,7 +2,8 @@ CONFIG_SNI_RM=y
 CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_ARC_CONSOLE=y
 CONFIG_HZ_1000=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
+CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_BSD_PROCESS_ACCT=y
diff --git a/arch/parisc/configs/712_defconfig b/arch/parisc/configs/712_defconfig
index ccc109761f44..a6a5b0b7a9c9 100644
--- a/arch/parisc/configs/712_defconfig
+++ b/arch/parisc/configs/712_defconfig
@@ -13,7 +13,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 CONFIG_PA7100LC=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_GSC_LASI=y
 # CONFIG_PDC_CHASSIS is not set
 CONFIG_BINFMT_MISC=m
diff --git a/arch/parisc/configs/c3000_defconfig b/arch/parisc/configs/c3000_defconfig
index 8d41a73bd71b..b8e0a6662ff9 100644
--- a/arch/parisc/configs/c3000_defconfig
+++ b/arch/parisc/configs/c3000_defconfig
@@ -13,7 +13,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 CONFIG_PA8X00=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 # CONFIG_GSC is not set
 CONFIG_PCI=y
 CONFIG_PCI_LBA=y
diff --git a/arch/parisc/configs/default_defconfig b/arch/parisc/configs/default_defconfig
index 52c9050a7c5c..8d86d2e989f4 100644
--- a/arch/parisc/configs/default_defconfig
+++ b/arch/parisc/configs/default_defconfig
@@ -14,7 +14,7 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_PA7100LC=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_IOMMU_CCIO=y
 CONFIG_GSC_LASI=y
 CONFIG_GSC_WAX=y
diff --git a/arch/powerpc/configs/c2k_defconfig b/arch/powerpc/configs/c2k_defconfig
index f1552af9eecc..f8505e6ec7b3 100644
--- a/arch/powerpc/configs/c2k_defconfig
+++ b/arch/powerpc/configs/c2k_defconfig
@@ -29,7 +29,7 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=m
 CONFIG_CPU_FREQ_GOV_ONDEMAND=m
 CONFIG_GEN_RTC=y
 CONFIG_HIGHMEM=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BINFMT_MISC=y
 CONFIG_PM=y
 CONFIG_PCI_MSI=y
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index da0e8d535eb8..c016af41ab4f 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -74,7 +74,7 @@ CONFIG_QE_GPIO=y
 CONFIG_MCU_MPC8349EMITX=y
 CONFIG_HIGHMEM=y
 CONFIG_HZ_1000=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_BINFMT_MISC=y
 CONFIG_HIBERNATION=y
 CONFIG_PM_DEBUG=y
diff --git a/arch/score/configs/spct6600_defconfig b/arch/score/configs/spct6600_defconfig
index b2d8802f43b4..46434ca1fa10 100644
--- a/arch/score/configs/spct6600_defconfig
+++ b/arch/score/configs/spct6600_defconfig
@@ -1,5 +1,5 @@
 CONFIG_HZ_100=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_EXPERIMENTAL=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
diff --git a/arch/sh/configs/se7712_defconfig b/arch/sh/configs/se7712_defconfig
index 5a1097641247..eb5fbf554e7f 100644
--- a/arch/sh/configs/se7712_defconfig
+++ b/arch/sh/configs/se7712_defconfig
@@ -23,7 +23,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_SH_SOLUTION_ENGINE=y
 CONFIG_SH_PCLK_FREQ=66666666
 CONFIG_HEARTBEAT=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_CMDLINE_OVERWRITE=y
 CONFIG_CMDLINE="console=ttySC0,115200 root=/dev/sda1"
 CONFIG_NET=y
diff --git a/arch/sh/configs/se7721_defconfig b/arch/sh/configs/se7721_defconfig
index 9c0ef13bee10..cbaa65c8bf9e 100644
--- a/arch/sh/configs/se7721_defconfig
+++ b/arch/sh/configs/se7721_defconfig
@@ -23,7 +23,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_SH_7721_SOLUTION_ENGINE=y
 CONFIG_SH_PCLK_FREQ=33333333
 CONFIG_HEARTBEAT=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_CMDLINE_OVERWRITE=y
 CONFIG_CMDLINE="console=ttySC0,115200 root=/dev/sda2"
 CONFIG_NET=y
diff --git a/arch/sh/configs/titan_defconfig b/arch/sh/configs/titan_defconfig
index ceb48e9b70f4..1a69eda6610c 100644
--- a/arch/sh/configs/titan_defconfig
+++ b/arch/sh/configs/titan_defconfig
@@ -20,7 +20,7 @@ CONFIG_SH_TITAN=y
 CONFIG_SH_PCLK_FREQ=30000000
 CONFIG_SH_DMA=y
 CONFIG_SH_DMA_API=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_CMDLINE_OVERWRITE=y
 CONFIG_CMDLINE="console=ttySC1,38400N81 root=/dev/nfs ip=:::::eth1:autoconf rw"
 CONFIG_PCI=y
diff --git a/arch/sparc/configs/sparc64_defconfig b/arch/sparc/configs/sparc64_defconfig
index 4d4e1cc6402f..04bea1d28ba7 100644
--- a/arch/sparc/configs/sparc64_defconfig
+++ b/arch/sparc/configs/sparc64_defconfig
@@ -22,7 +22,7 @@ CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_NUMA=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=8192
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_SUN_LDOMS=y
 CONFIG_PCI=y
 CONFIG_PCI_MSI=y
diff --git a/arch/tile/configs/tilegx_defconfig b/arch/tile/configs/tilegx_defconfig
index 9f94435cc44f..aa78ee6cd5eb 100644
--- a/arch/tile/configs/tilegx_defconfig
+++ b/arch/tile/configs/tilegx_defconfig
@@ -47,7 +47,7 @@ CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_NR_CPUS=100
 CONFIG_HZ_100=y
 # CONFIG_COMPACTION is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_TILE_PCI_IO=y
 CONFIG_PCI_DEBUG=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
diff --git a/arch/tile/configs/tilepro_defconfig b/arch/tile/configs/tilepro_defconfig
index 1c5bd4f8ffca..38005862062c 100644
--- a/arch/tile/configs/tilepro_defconfig
+++ b/arch/tile/configs/tilepro_defconfig
@@ -44,7 +44,7 @@ CONFIG_KARMA_PARTITION=y
 CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_HZ_100=y
 # CONFIG_COMPACTION is not set
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_PCI_DEBUG=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_BINFMT_MISC=y
diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig
index 0eb9f92f3717..e5890ae917e5 100644
--- a/arch/x86/configs/i386_defconfig
+++ b/arch/x86/configs/i386_defconfig
@@ -41,7 +41,7 @@ CONFIG_SMP=y
 CONFIG_X86_GENERIC=y
 CONFIG_HPET_TIMER=y
 CONFIG_SCHED_SMT=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
 CONFIG_X86_MCE=y
 CONFIG_X86_REBOOTFIXUPS=y
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index 4a4b16e56d35..7452dcadda74 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -40,7 +40,7 @@ CONFIG_SMP=y
 CONFIG_CALGARY_IOMMU=y
 CONFIG_NR_CPUS=64
 CONFIG_SCHED_SMT=y
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT=y
 CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
 CONFIG_X86_MCE=y
 CONFIG_MICROCODE=y
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
index 3f9c97419f02..1dc79ec7ad09 100644
--- a/kernel/Kconfig.preempt
+++ b/kernel/Kconfig.preempt
@@ -1,7 +1,7 @@
 
 choice
 	prompt "Preemption Model"
-	default PREEMPT_NONE
+	default PREEMPT
 
 config PREEMPT_NONE
 	bool "No Forced Preemption (Server)"
@@ -17,7 +17,7 @@ config PREEMPT_NONE
 	  latencies.
 
 config PREEMPT_VOLUNTARY
-	bool "Voluntary Kernel Preemption (Desktop)"
+	bool "Voluntary Kernel Preemption (Nothing)"
 	help
 	  This option reduces the latency of the kernel by adding more
 	  "explicit preemption points" to the kernel code. These new
@@ -31,7 +31,8 @@ config PREEMPT_VOLUNTARY
 	  applications to run more 'smoothly' even when the system is
 	  under load.
 
-	  Select this if you are building a kernel for a desktop system.
+	  Select this for no system in particular (choose Preemptible
+	  instead on a desktop if you know what's good for you).
 
 config PREEMPT
 	bool "Preemptible Kernel (Low-Latency Desktop)"
-- 
2.11.0