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Finally eradicate CONFIG_HOTPLUG

Browse source 
Ever since commit 45f035ab9b ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off.  Remove all the remaining references to it.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Rothwell 2013-05-21 13:49:35 +10:00 • committed by Greg Kroah-Hartman
commit 40b313608a
33 changed files with 22 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

5
Documentation/ABI/testing/sysfs-bus-pci
View file

@ -64,7 +64,6 @@ Description:
Writing a non-zero value to this attribute will
force a rescan of all PCI buses in the system, and
re-discover previously removed devices.
Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../msi_irqs/
Date: September, 2011
@ -90,7 +89,6 @@ Contact: Linux PCI developers <linux-pci@vger.kernel.org>
Description:
Writing a non-zero value to this attribute will
hot-remove the PCI device and any of its children.
Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../pci_bus/.../rescan
Date: May 2011
@ -99,7 +97,7 @@ Description:
Writing a non-zero value to this attribute will
force a rescan of the bus and all child buses,
and re-discover devices removed earlier from this
part of the device tree. Depends on CONFIG_HOTPLUG.
part of the device tree.
What: /sys/bus/pci/devices/.../rescan
Date: January 2009
@ -109,7 +107,6 @@ Description:
force a rescan of the device's parent bus and all
child buses, and re-discover devices removed earlier
from this part of the device tree.
Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../reset
Date: July 2009

2
Documentation/SubmitChecklist
View file

@ -105,5 +105,5 @@ kernel patches.
same time, just various/random combinations of them]:
CONFIG_SMP, CONFIG_SYSFS, CONFIG_PROC_FS, CONFIG_INPUT, CONFIG_PCI,
CONFIG_BLOCK, CONFIG_PM, CONFIG_HOTPLUG, CONFIG_MAGIC_SYSRQ,
CONFIG_BLOCK, CONFIG_PM, CONFIG_MAGIC_SYSRQ,
CONFIG_NET, CONFIG_INET=n (but latter with CONFIG_NET=y)

2
Documentation/cpu-hotplug.txt
View file

@ -128,7 +128,7 @@ A: When doing make defconfig, Enable CPU hotplug support
"Processor type and Features" -> Support for Hotpluggable CPUs
Make sure that you have CONFIG_HOTPLUG, and CONFIG_SMP turned on as well.
Make sure that you have CONFIG_SMP turned on as well.
You would need to enable CONFIG_HOTPLUG_CPU for SMP suspend/resume support
as well.

3
Documentation/hwmon/submitting-patches
View file

@ -27,8 +27,7 @@ increase the chances of your change being accepted.
explicitly below the patch header.
* If your patch (or the driver) is affected by configuration options such as
CONFIG_SMP or CONFIG_HOTPLUG, make sure it compiles for all configuration
variants.
CONFIG_SMP, make sure it compiles for all configuration variants.
2. Adding functionality to existing drivers

2
Documentation/kbuild/kconfig.txt
View file

@ -165,7 +165,7 @@ Searching in menuconfig:
Example:
/hotplug
This lists all config symbols that contain "hotplug",
e.g., HOTPLUG, HOTPLUG_CPU, MEMORY_HOTPLUG.
e.g., HOTPLUG_CPU, MEMORY_HOTPLUG.
For search help, enter / followed TAB-TAB-TAB (to highlight
<Help>) and Enter. This will tell you that you can also use

6
Documentation/usb/hotplug.txt
View file

@ -33,9 +33,9 @@ you get the best hotplugging when you configure a highly modular system.
KERNEL HOTPLUG HELPER (/sbin/hotplug)
When you compile with CONFIG_HOTPLUG, you get a new kernel parameter:
/proc/sys/kernel/hotplug, which normally holds the pathname "/sbin/hotplug".
That parameter names a program which the kernel may invoke at various times.
There is a kernel parameter: /proc/sys/kernel/hotplug, which normally
holds the pathname "/sbin/hotplug". That parameter names a program
which the kernel may invoke at various times.
The /sbin/hotplug program can be invoked by any subsystem as part of its
reaction to a configuration change, from a thread in that subsystem.

2
arch/arm/Kconfig
View file

@ -1528,7 +1528,7 @@ config NR_CPUS
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP && HOTPLUG
depends on SMP
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.

8
arch/arm/kernel/module.c
View file

@ -288,24 +288,16 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
if (strcmp(".ARM.exidx.init.text", secname) == 0)
maps[ARM_SEC_INIT].unw_sec = s;
else if (strcmp(".ARM.exidx.devinit.text", secname) == 0)
maps[ARM_SEC_DEVINIT].unw_sec = s;
else if (strcmp(".ARM.exidx", secname) == 0)
maps[ARM_SEC_CORE].unw_sec = s;
else if (strcmp(".ARM.exidx.exit.text", secname) == 0)
maps[ARM_SEC_EXIT].unw_sec = s;
else if (strcmp(".ARM.exidx.devexit.text", secname) == 0)
maps[ARM_SEC_DEVEXIT].unw_sec = s;
else if (strcmp(".init.text", secname) == 0)
maps[ARM_SEC_INIT].txt_sec = s;
else if (strcmp(".devinit.text", secname) == 0)
maps[ARM_SEC_DEVINIT].txt_sec = s;
else if (strcmp(".text", secname) == 0)
maps[ARM_SEC_CORE].txt_sec = s;
else if (strcmp(".exit.text", secname) == 0)
maps[ARM_SEC_EXIT].txt_sec = s;
else if (strcmp(".devexit.text", secname) == 0)
maps[ARM_SEC_DEVEXIT].txt_sec = s;
}
for (i = 0; i < ARM_SEC_MAX; i++)

4
arch/arm/kernel/vmlinux.lds.S
View file

@ -70,10 +70,6 @@ SECTIONS
ARM_EXIT_DISCARD(EXIT_TEXT)
ARM_EXIT_DISCARD(EXIT_DATA)
EXIT_CALL
#ifndef CONFIG_HOTPLUG
*(.ARM.exidx.devexit.text)
*(.ARM.extab.devexit.text)
#endif
#ifndef CONFIG_MMU
*(.fixup)
*(__ex_table)

1
arch/arm/mach-ixp4xx/Kconfig
View file

@ -235,7 +235,6 @@ config IXP4XX_QMGR
config IXP4XX_NPE
tristate "IXP4xx Network Processor Engine support"
select FW_LOADER
select HOTPLUG
help
This driver supports IXP4xx built-in network coprocessors
and is automatically selected by Ethernet and HSS drivers.

2
arch/blackfin/Kconfig
View file

@ -253,7 +253,7 @@ config NR_CPUS
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP && HOTPLUG
depends on SMP
default y
config BF_REV_MIN

1
arch/cris/arch-v32/drivers/Kconfig
View file

@ -617,7 +617,6 @@ config ETRAX_PV_CHANGEABLE_BITS
config ETRAX_CARDBUS
bool "Cardbus support"
depends on ETRAX_ARCH_V32
select HOTPLUG
help
Enabled the ETRAX Cardbus driver.

1
arch/ia64/Kconfig
View file

@ -376,7 +376,6 @@ config NR_CPUS
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP
select HOTPLUG
default n
---help---
Say Y here to experiment with turning CPUs off and on. CPUs

2
arch/mips/Kconfig
View file

@ -962,7 +962,7 @@ config SYS_HAS_EARLY_PRINTK
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
help
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.

1
arch/parisc/Kconfig
View file

@ -254,7 +254,6 @@ config IRQSTACKS
config HOTPLUG_CPU
bool
default y if SMP
select HOTPLUG
config ARCH_SELECT_MEMORY_MODEL
def_bool y

2
arch/powerpc/Kconfig
View file

@ -341,7 +341,7 @@ config SWIOTLB
config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
depends on SMP && HOTPLUG && (PPC_PSERIES || \
depends on SMP && (PPC_PSERIES || \
PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
---help---
Say Y here to be able to disable and re-enable individual

4
arch/powerpc/mm/tlb_hash64.c
View file

@ -183,8 +183,8 @@ void tlb_flush(struct mmu_gather *tlb)
* since 64K pages may overlap with other bridges when using 64K pages
* with 4K HW pages on IO space.
*
* Because of that usage pattern, it's only available with CONFIG_HOTPLUG
* and is implemented for small size rather than speed.
* Because of that usage pattern, it is implemented for small size rather
* than speed.
*/
void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
unsigned long end)

1
arch/s390/Kconfig
View file

@ -301,7 +301,6 @@ config HOTPLUG_CPU
def_bool y
prompt "Support for hot-pluggable CPUs"
depends on SMP
select HOTPLUG
help
Say Y here to be able to turn CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.

2
arch/sh/Kconfig
View file

@ -748,7 +748,7 @@ config NR_CPUS
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
depends on SMP && HOTPLUG
depends on SMP
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.

1
arch/sparc/Kconfig
View file

@ -243,7 +243,6 @@ config SECCOMP
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SPARC64 && SMP
select HOTPLUG
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.

2
arch/x86/Kconfig
View file

@ -1725,7 +1725,7 @@ config PHYSICAL_ALIGN
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP && HOTPLUG
depends on SMP
---help---
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.

2
drivers/base/Kconfig
View file

@ -2,7 +2,6 @@ menu "Generic Driver Options"
config UEVENT_HELPER_PATH
string "path to uevent helper"
depends on HOTPLUG
default ""
help
Path to uevent helper program forked by the kernel for
@ -23,7 +22,6 @@ config UEVENT_HELPER_PATH
config DEVTMPFS
bool "Maintain a devtmpfs filesystem to mount at /dev"
depends on HOTPLUG
help
This creates a tmpfs/ramfs filesystem instance early at bootup.
In this filesystem, the kernel driver core maintains device

2
drivers/char/pcmcia/Kconfig
View file

@ -3,7 +3,7 @@
#
menu "PCMCIA character devices"
depends on HOTPLUG && PCMCIA!=n
depends on PCMCIA!=n
config SYNCLINK_CS
tristate "SyncLink PC Card support"

2
drivers/edac/Kconfig
View file

@ -145,7 +145,7 @@ config EDAC_E7XXX
config EDAC_E752X
tristate "Intel e752x (e7520, e7525, e7320) and 3100"
depends on EDAC_MM_EDAC && PCI && X86 && HOTPLUG
depends on EDAC_MM_EDAC && PCI && X86
help
Support for error detection and correction on the Intel
E7520, E7525, E7320 server chipsets.

2
drivers/pci/Kconfig
View file

@ -55,7 +55,6 @@ config PCI_STUB
config XEN_PCIDEV_FRONTEND
tristate "Xen PCI Frontend"
depends on PCI && X86 && XEN
select HOTPLUG
select PCI_XEN
select XEN_XENBUS_FRONTEND
default y
@ -113,7 +112,6 @@ config PCI_IOAPIC
tristate "PCI IO-APIC hotplug support" if X86
depends on PCI
depends on ACPI
depends on HOTPLUG
default !X86
config PCI_LABEL

2
drivers/pci/hotplug/Kconfig
View file

@ -4,7 +4,7 @@
menuconfig HOTPLUG_PCI
tristate "Support for PCI Hotplug"
depends on PCI && HOTPLUG && SYSFS
depends on PCI && SYSFS
---help---
Say Y here if you have a motherboard with a PCI Hotplug controller.
This allows you to add and remove PCI cards while the machine is

1
drivers/pcmcia/Kconfig
View file

@ -4,7 +4,6 @@
menuconfig PCCARD
tristate "PCCard (PCMCIA/CardBus) support"
depends on HOTPLUG
---help---
Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
computer. These are credit-card size devices such as network cards,

1
drivers/staging/media/go7007/go7007.txt
View file

@ -78,7 +78,6 @@ All vendor-built kernels should already be configured properly. However,
for custom-built kernels, the following options need to be enabled in the
kernel as built-in or modules:
CONFIG_HOTPLUG - Support for hot-pluggable devices
CONFIG_MODULES - Enable loadable module support
CONFIG_KMOD - Automatic kernel module loading
CONFIG_FW_LOADER - Hotplug firmware loading support

5
fs/gfs2/Kconfig
View file

@ -20,13 +20,12 @@ config GFS2_FS
be found here: http://sources.redhat.com/cluster
The "nolock" lock module is now built in to GFS2 by default. If
you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
networking.
you want to use the DLM, be sure to enable IPv4/6 networking.
config GFS2_FS_LOCKING_DLM
bool "GFS2 DLM locking"
depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
HOTPLUG && CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
help
Multiple node locking module for GFS2

20
include/asm-generic/vmlinux.lds.h
View file

@ -68,14 +68,6 @@
* are handled as text/data or they can be discarded (which
* often happens at runtime)
*/
#ifdef CONFIG_HOTPLUG
#define DEV_KEEP(sec) *(.dev##sec)
#define DEV_DISCARD(sec)
#else
#define DEV_KEEP(sec)
#define DEV_DISCARD(sec) *(.dev##sec)
#endif
#ifdef CONFIG_HOTPLUG_CPU
#define CPU_KEEP(sec) *(.cpu##sec)
#define CPU_DISCARD(sec)
@ -182,8 +174,6 @@
*(.data) \
*(.ref.data) \
*(.data..shared_aligned) /* percpu related */ \
DEV_KEEP(init.data) \
DEV_KEEP(exit.data) \
CPU_KEEP(init.data) \
CPU_KEEP(exit.data) \
MEM_KEEP(init.data) \
@ -372,8 +362,6 @@
/* __*init sections */ \
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
*(.ref.rodata) \
DEV_KEEP(init.rodata) \
DEV_KEEP(exit.rodata) \
CPU_KEEP(init.rodata) \
CPU_KEEP(exit.rodata) \
MEM_KEEP(init.rodata) \
@ -416,8 +404,6 @@
*(.text.hot) \
*(.text) \
*(.ref.text) \
DEV_KEEP(init.text) \
DEV_KEEP(exit.text) \
CPU_KEEP(init.text) \
CPU_KEEP(exit.text) \
MEM_KEEP(init.text) \
@ -503,7 +489,6 @@
/* init and exit section handling */
#define INIT_DATA \
*(.init.data) \
DEV_DISCARD(init.data) \
CPU_DISCARD(init.data) \
MEM_DISCARD(init.data) \
KERNEL_CTORS() \
@ -511,7 +496,6 @@
*(.init.rodata) \
FTRACE_EVENTS() \
TRACE_SYSCALLS() \
DEV_DISCARD(init.rodata) \
CPU_DISCARD(init.rodata) \
MEM_DISCARD(init.rodata) \
CLK_OF_TABLES() \
@ -521,14 +505,11 @@
#define INIT_TEXT \
*(.init.text) \
DEV_DISCARD(init.text) \
CPU_DISCARD(init.text) \
MEM_DISCARD(init.text)
#define EXIT_DATA \
*(.exit.data) \
DEV_DISCARD(exit.data) \
DEV_DISCARD(exit.rodata) \
CPU_DISCARD(exit.data) \
CPU_DISCARD(exit.rodata) \
MEM_DISCARD(exit.data) \
@ -536,7 +517,6 @@
#define EXIT_TEXT \
*(.exit.text) \
DEV_DISCARD(exit.text) \
CPU_DISCARD(exit.text) \
MEM_DISCARD(exit.text)

3
init/Kconfig
View file

@ -1244,9 +1244,6 @@ config SYSCTL_ARCH_UNALIGN_ALLOW
the unaligned access emulation.
see arch/parisc/kernel/unaligned.c for reference
config HOTPLUG
def_bool y
config HAVE_PCSPKR_PLATFORM
bool

1
kernel/power/Kconfig
View file

@ -100,7 +100,6 @@ config PM_SLEEP_SMP
depends on SMP
depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE
depends on PM_SLEEP
select HOTPLUG
select HOTPLUG_CPU
config PM_AUTOSLEEP

2
mm/Kconfig
View file

@ -173,7 +173,7 @@ config HAVE_BOOTMEM_INFO_NODE
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
depends on SPARSEMEM || X86_64_ACPI_NUMA
depends on HOTPLUG && ARCH_ENABLE_MEMORY_HOTPLUG
depends on ARCH_ENABLE_MEMORY_HOTPLUG
depends on (IA64 || X86 || PPC_BOOK3S_64 || SUPERH || S390)
config MEMORY_HOTPLUG_SPARSE