VERSION = 4
PATCHLEVEL = 17
SUBLEVEL = 0
-EXTRAVERSION = -rc4
+EXTRAVERSION =
NAME = Merciless Moray
# *DOCUMENTATION*
RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
export RETPOLINE_CFLAGS
+KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
+KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
+
# check for 'asm goto'
ifeq ($(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
CC_HAVE_ASM_GOTO := 1
# Defaults to vmlinux, but the arch makefile usually adds further targets
all: vmlinux
-KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
-KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
-CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,)
+CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
+ $(call cc-option,-fno-tree-loop-im) \
+ $(call cc-disable-warning,maybe-uninitialized,)
export CFLAGS_GCOV CFLAGS_KCOV
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
endif
ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
- KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)
- KBUILD_CFLAGS += $(call cc-option,-fdata-sections,)
+ KBUILD_CFLAGS_KERNEL += $(call cc-option,-ffunction-sections,)
+ KBUILD_CFLAGS_KERNEL += $(call cc-option,-fdata-sections,)
endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc -isystem $(call shell-cached,$(CC) -print-file-name=include)
- CHECKFLAGS += $(NOSTDINC_FLAGS)
# warn about C99 declaration after statement
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
LDFLAGS_vmlinux += $(call ld-option, -X,)
endif
+ # insure the checker run with the right endianness
+ CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
+
+ # the checker needs the correct machine size
+ CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32)
+
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the command line or
# set in the environment
# Run depmod only if we have System.map and depmod is executable
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
- $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
+ $(KERNELRELEASE)
# Create temporary dir for module support files
# clean it up only when building all modules
The <linux/clk.h> calls support software clock gating and
thus are a key power management tool on many systems.
-config HAVE_DMA_API_DEBUG
- bool
-
config HAVE_HW_BREAKPOINT
bool
depends on PERF_EVENTS
config GCC_PLUGIN_STRUCTLEAK
bool "Force initialization of variables containing userspace addresses"
depends on GCC_PLUGINS
+ # Currently STRUCTLEAK inserts initialization out of live scope of
+ # variables from KASAN point of view. This leads to KASAN false
+ # positive reports. Prohibit this combination for now.
+ depends on !KASAN_EXTRA
help
This plugin zero-initializes any structures containing a
__user attribute. This can prevent some classes of information
endchoice
- config LD_DEAD_CODE_DATA_ELIMINATION
- bool
- help
- Select this if the architecture wants to do dead code and
- data elimination with the linker by compiling with
- -ffunction-sections -fdata-sections and linking with
- --gc-sections.
-
- This requires that the arch annotates or otherwise protects
- its external entry points from being discarded. Linker scripts
- must also merge .text.*, .data.*, and .bss.* correctly into
- output sections. Care must be taken not to pull in unrelated
- sections (e.g., '.text.init'). Typically '.' in section names
- is used to distinguish them from label names / C identifiers.
-
config HAVE_ARCH_WITHIN_STACK_FRAMES
bool
help
Modules only use ELF REL relocations. Modules with ELF RELA
relocations will give an error.
- config HAVE_UNDERSCORE_SYMBOL_PREFIX
- bool
- help
- Some architectures generate an _ in front of C symbols; things like
- module loading and assembly files need to know about this.
-
config HAVE_IRQ_EXIT_ON_IRQ_STACK
bool
help
config COMPAT_OLD_SIGACTION
bool
+config 64BIT_TIME
+ def_bool ARCH_HAS_64BIT_TIME
+ help
+ This should be selected by all architectures that need to support
+ new system calls with a 64-bit time_t. This is relevant on all 32-bit
+ architectures, and 64-bit architectures as part of compat syscall
+ handling.
+
+config COMPAT_32BIT_TIME
+ def_bool (!64BIT && 64BIT_TIME) || COMPAT
+ help
+ This enables 32 bit time_t support in addition to 64 bit time_t support.
+ This is relevant on all 32-bit architectures, and 64-bit architectures
+ as part of compat syscall handling.
+
config ARCH_NO_COHERENT_DMA_MMAP
bool
bool
default y if PPC64
-config ARCH_PHYS_ADDR_T_64BIT
- def_bool PPC64 || PHYS_64BIT
-
-config ARCH_DMA_ADDR_T_64BIT
- def_bool ARCH_PHYS_ADDR_T_64BIT
-
config MMU
bool
default y
select HAVE_CONTEXT_TRACKING if PPC64
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_STACKOVERFLOW
- select HAVE_DMA_API_DEBUG
select HAVE_DYNAMIC_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
select HAVE_EBPF_JIT if PPC64
select HAVE_KPROBES
select HAVE_KPROBES_ON_FTRACE
select HAVE_KRETPROBES
+ select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING
select HAVE_IRQ_TIME_ACCOUNTING
+ select IOMMU_HELPER if PPC64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
+ select NEED_SG_DMA_LENGTH
select NO_BOOTMEM
select OF
select OF_EARLY_FLATTREE
depends on PPC64 && CPU_LITTLE_ENDIAN
def_bool !DISABLE_MPROFILE_KERNEL
-config IOMMU_HELPER
- def_bool PPC64
-
-config SWIOTLB
- bool "SWIOTLB support"
- default n
- select IOMMU_HELPER
- ---help---
- Support for IO bounce buffering for systems without an IOMMU.
- This allows us to DMA to the full physical address space on
- platforms where the size of a physical address is larger
- than the bus address. Not all platforms support this.
-
config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
depends on SMP && (PPC_PSERIES || \
page-based protections, but without requiring modification of the
page tables when an application changes protection domains.
- For details, see Documentation/vm/protection-keys.txt
+ For details, see Documentation/vm/protection-keys.rst
If unsure, say y.
config NEED_DMA_MAP_STATE
def_bool (PPC64 || NOT_COHERENT_CACHE)
-config NEED_SG_DMA_LENGTH
- def_bool y
-
config GENERIC_ISA_DMA
bool
depends on ISA_DMA_API
*/
.text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
#ifdef CONFIG_LD_HEAD_STUB_CATCH
- *(.linker_stub_catch);
+ KEEP(*(.linker_stub_catch));
. = . ;
#endif
ALIGN_FUNCTION();
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
- *(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
+ *(.text.hot TEXT_MAIN .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
RO_DATA(PAGE_SIZE)
#ifdef CONFIG_PPC64
+ . = ALIGN(8);
+ __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
+ __start___stf_entry_barrier_fixup = .;
+ *(__stf_entry_barrier_fixup)
+ __stop___stf_entry_barrier_fixup = .;
+ }
+
+ . = ALIGN(8);
+ __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
+ __start___stf_exit_barrier_fixup = .;
+ *(__stf_exit_barrier_fixup)
+ __stop___stf_exit_barrier_fixup = .;
+ }
+
. = ALIGN(8);
__rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
__start___rfi_flush_fixup = .;
.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
INIT_DATA
__vtop_table_begin = .;
- *(.vtop_fixup);
+ KEEP(*(.vtop_fixup));
__vtop_table_end = .;
__ptov_table_begin = .;
- *(.ptov_fixup);
+ KEEP(*(.ptov_fixup));
__ptov_table_end = .;
}
. = ALIGN(8);
__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
__start___ftr_fixup = .;
- *(__ftr_fixup)
+ KEEP(*(__ftr_fixup))
__stop___ftr_fixup = .;
}
. = ALIGN(8);
__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
__start___mmu_ftr_fixup = .;
- *(__mmu_ftr_fixup)
+ KEEP(*(__mmu_ftr_fixup))
__stop___mmu_ftr_fixup = .;
}
. = ALIGN(8);
__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
__start___lwsync_fixup = .;
- *(__lwsync_fixup)
+ KEEP(*(__lwsync_fixup))
__stop___lwsync_fixup = .;
}
#ifdef CONFIG_PPC64
. = ALIGN(8);
__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
__start___fw_ftr_fixup = .;
- *(__fw_ftr_fixup)
+ KEEP(*(__fw_ftr_fixup))
__stop___fw_ftr_fixup = .;
}
#endif
. = ALIGN(8);
.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
__machine_desc_start = . ;
- *(.machine.desc)
+ KEEP(*(.machine.desc))
__machine_desc_end = . ;
}
#ifdef CONFIG_RELOCATABLE
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.data.rel*)
- *(.sdata)
+ *(SDATA_MAIN)
*(.sdata2)
*(.got.plt) *(.got)
*(.plt)
.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
__start_opd = .;
- *(.opd)
+ KEEP(*(.opd))
__end_opd = .;
}
tasks running within the fair group scheduler. Groups with no limit
set are considered to be unconstrained and will run with no
restriction.
- See tip/Documentation/scheduler/sched-bwc.txt for more information.
+ See Documentation/scheduler/sched-bwc.txt for more information.
config RT_GROUP_SCHED
bool "Group scheduling for SCHED_RR/FIFO"
endchoice
+ config HAVE_LD_DEAD_CODE_DATA_ELIMINATION
+ bool
+ help
+ This requires that the arch annotates or otherwise protects
+ its external entry points from being discarded. Linker scripts
+ must also merge .text.*, .data.*, and .bss.* correctly into
+ output sections. Care must be taken not to pull in unrelated
+ sections (e.g., '.text.init'). Typically '.' in section names
+ is used to distinguish them from label names / C identifiers.
+
+ config LD_DEAD_CODE_DATA_ELIMINATION
+ bool "Dead code and data elimination (EXPERIMENTAL)"
+ depends on HAVE_LD_DEAD_CODE_DATA_ELIMINATION
+ depends on EXPERT
+ help
+ Select this if the architecture wants to do dead code and
+ data elimination with the linker by compiling with
+ -ffunction-sections -fdata-sections, and linking with
+ --gc-sections.
+
+ This can reduce on disk and in-memory size of the kernel
+ code and static data, particularly for small configs and
+ on small systems. This has the possibility of introducing
+ silently broken kernel if the required annotations are not
+ present. This option is not well tested yet, so use at your
+ own risk.
+
config SYSCTL
bool
$tmp_stmt =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
$tmp_stmt =~ s/\#+\s*$arg\b//g;
$tmp_stmt =~ s/\b$arg\s*\#\#//g;
- my $use_cnt = $tmp_stmt =~ s/\b$arg\b//g;
+ my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;
if ($use_cnt > 1) {
CHK("MACRO_ARG_REUSE",
"Macro argument reuse '$arg' - possible side-effects?\n" . "$herectx");
}
}
- # make sure symbols are always wrapped with VMLINUX_SYMBOL() ...
- # all assignments may have only one of the following with an assignment:
- # .
- # ALIGN(...)
- # VMLINUX_SYMBOL(...)
- if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) {
- WARN("MISSING_VMLINUX_SYMBOL",
- "vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
- }
-
# check for redundant bracing round if etc
if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
my ($level, $endln, @chunks) =
git.codelabs.ch / muen / linux.git / commitdiff