mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 17:24:17 +08:00
350e88bad4
Most architectures do not need the memblock memory after the page allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the arch Kconfig. Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the logic makes it clear which architectures actually use memblock after system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK to the architectures that are still missing that option. Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: Ley Foon Tan <lftan@altera.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
146 lines
3.0 KiB
Plaintext
146 lines
3.0 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
|
|
# Hexagon configuration
|
|
comment "Linux Kernel Configuration for Hexagon"
|
|
|
|
config HEXAGON
|
|
def_bool y
|
|
select ARCH_32BIT_OFF_T
|
|
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
|
|
select ARCH_NO_PREEMPT
|
|
select HAVE_OPROFILE
|
|
# Other pending projects/to-do items.
|
|
# select HAVE_REGS_AND_STACK_ACCESS_API
|
|
# select HAVE_HW_BREAKPOINT if PERF_EVENTS
|
|
# select ARCH_HAS_CPU_IDLE_WAIT
|
|
# select GPIOLIB
|
|
# select HAVE_CLK
|
|
# select GENERIC_PENDING_IRQ if SMP
|
|
select GENERIC_ATOMIC64
|
|
select HAVE_PERF_EVENTS
|
|
# GENERIC_ALLOCATOR is used by dma_alloc_coherent()
|
|
select GENERIC_ALLOCATOR
|
|
select GENERIC_IRQ_SHOW
|
|
select HAVE_ARCH_KGDB
|
|
select HAVE_ARCH_TRACEHOOK
|
|
select NEED_SG_DMA_LENGTH
|
|
select NO_IOPORT_MAP
|
|
select GENERIC_IOMAP
|
|
select GENERIC_SMP_IDLE_THREAD
|
|
select STACKTRACE_SUPPORT
|
|
select GENERIC_CLOCKEVENTS
|
|
select GENERIC_CLOCKEVENTS_BROADCAST
|
|
select MODULES_USE_ELF_RELA
|
|
select GENERIC_CPU_DEVICES
|
|
---help---
|
|
Qualcomm Hexagon is a processor architecture designed for high
|
|
performance and low power across a wide variety of applications.
|
|
|
|
config HEXAGON_PHYS_OFFSET
|
|
def_bool y
|
|
---help---
|
|
Platforms that don't load the kernel at zero set this.
|
|
|
|
config FRAME_POINTER
|
|
def_bool y
|
|
|
|
config LOCKDEP_SUPPORT
|
|
def_bool y
|
|
|
|
config EARLY_PRINTK
|
|
def_bool y
|
|
|
|
config MMU
|
|
def_bool y
|
|
|
|
config TRACE_IRQFLAGS_SUPPORT
|
|
def_bool y
|
|
|
|
config GENERIC_CSUM
|
|
def_bool y
|
|
|
|
#
|
|
# Use the generic interrupt handling code in kernel/irq/:
|
|
#
|
|
config GENERIC_IRQ_PROBE
|
|
def_bool y
|
|
|
|
config GENERIC_HWEIGHT
|
|
def_bool y
|
|
|
|
config STACKTRACE_SUPPORT
|
|
def_bool y
|
|
select STACKTRACE
|
|
|
|
config GENERIC_BUG
|
|
def_bool y
|
|
depends on BUG
|
|
|
|
menu "Machine selection"
|
|
|
|
choice
|
|
prompt "System type"
|
|
default HEXAGON_COMET
|
|
|
|
config HEXAGON_COMET
|
|
bool "Comet Board"
|
|
---help---
|
|
Support for the Comet platform.
|
|
|
|
endchoice
|
|
|
|
config HEXAGON_ARCH_VERSION
|
|
int "Architecture version"
|
|
default 2
|
|
|
|
config CMDLINE
|
|
string "Default kernel command string"
|
|
default ""
|
|
help
|
|
On some platforms, there is currently no way for the boot loader
|
|
to pass arguments to the kernel. For these, you should supply some
|
|
command-line options at build time by entering them here. At a
|
|
minimum, you should specify the memory size and the root device
|
|
(e.g., mem=64M root=/dev/nfs).
|
|
|
|
config SMP
|
|
bool "Multi-Processing support"
|
|
---help---
|
|
Enables SMP support in the kernel. If unsure, say "Y"
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs" if SMP
|
|
range 2 6 if SMP
|
|
default "1" if !SMP
|
|
default "6" if SMP
|
|
---help---
|
|
This allows you to specify the maximum number of CPUs which this
|
|
kernel will support. The maximum supported value is 6 and the
|
|
minimum value which makes sense is 2.
|
|
|
|
This is purely to save memory - each supported CPU adds
|
|
approximately eight kilobytes to the kernel image.
|
|
|
|
choice
|
|
prompt "Kernel page size"
|
|
default PAGE_SIZE_4KB
|
|
---help---
|
|
Changes the default page size; use with caution.
|
|
|
|
config PAGE_SIZE_4KB
|
|
bool "4KB"
|
|
|
|
config PAGE_SIZE_16KB
|
|
bool "16KB"
|
|
|
|
config PAGE_SIZE_64KB
|
|
bool "64KB"
|
|
|
|
config PAGE_SIZE_256KB
|
|
bool "256KB"
|
|
|
|
endchoice
|
|
|
|
source "kernel/Kconfig.hz"
|
|
|
|
endmenu
|