diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/bitops/ext2-non-atomic.h | 2 | ||||
| -rw-r--r-- | include/asm-generic/bitops/le.h | 4 | ||||
| -rw-r--r-- | include/asm-generic/bug.h | 17 | ||||
| -rw-r--r-- | include/asm-generic/percpu.h | 97 | ||||
| -rw-r--r-- | include/asm-generic/resource.h | 7 | ||||
| -rw-r--r-- | include/asm-generic/tlb.h | 1 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 90 |
7 files changed, 171 insertions, 47 deletions
diff --git a/include/asm-generic/bitops/ext2-non-atomic.h b/include/asm-generic/bitops/ext2-non-atomic.h index 1697404..63cf822 100644 --- a/include/asm-generic/bitops/ext2-non-atomic.h +++ b/include/asm-generic/bitops/ext2-non-atomic.h @@ -14,5 +14,7 @@ generic_find_first_zero_le_bit((unsigned long *)(addr), (size)) #define ext2_find_next_zero_bit(addr, size, off) \ generic_find_next_zero_le_bit((unsigned long *)(addr), (size), (off)) +#define ext2_find_next_bit(addr, size, off) \ + generic_find_next_le_bit((unsigned long *)(addr), (size), (off)) #endif /* _ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_ */ diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h index b9c7e5d..80e3bf1 100644 --- a/include/asm-generic/bitops/le.h +++ b/include/asm-generic/bitops/le.h @@ -20,6 +20,8 @@ #define generic___test_and_clear_le_bit(nr, addr) __test_and_clear_bit(nr, addr) #define generic_find_next_zero_le_bit(addr, size, offset) find_next_zero_bit(addr, size, offset) +#define generic_find_next_le_bit(addr, size, offset) \ + find_next_bit(addr, size, offset) #elif defined(__BIG_ENDIAN) @@ -42,6 +44,8 @@ extern unsigned long generic_find_next_zero_le_bit(const unsigned long *addr, unsigned long size, unsigned long offset); +extern unsigned long generic_find_next_le_bit(const unsigned long *addr, + unsigned long size, unsigned long offset); #else #error "Please fix <asm/byteorder.h>" diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index d56fedb..2632328 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -31,14 +31,19 @@ struct bug_entry { #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0) #endif -#ifndef HAVE_ARCH_WARN_ON +#ifndef __WARN +#ifndef __ASSEMBLY__ +extern void warn_on_slowpath(const char *file, const int line); +#define WANT_WARN_ON_SLOWPATH +#endif +#define __WARN() warn_on_slowpath(__FILE__, __LINE__) +#endif + +#ifndef WARN_ON #define WARN_ON(condition) ({ \ int __ret_warn_on = !!(condition); \ - if (unlikely(__ret_warn_on)) { \ - printk("WARNING: at %s:%d %s()\n", __FILE__, \ - __LINE__, __FUNCTION__); \ - dump_stack(); \ - } \ + if (unlikely(__ret_warn_on)) \ + __WARN(); \ unlikely(__ret_warn_on); \ }) #endif diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h index d85172e..4b8d31c 100644 --- a/include/asm-generic/percpu.h +++ b/include/asm-generic/percpu.h @@ -3,54 +3,79 @@ #include <linux/compiler.h> #include <linux/threads.h> -#define __GENERIC_PER_CPU +/* + * Determine the real variable name from the name visible in the + * kernel sources. + */ +#define per_cpu_var(var) per_cpu__##var + #ifdef CONFIG_SMP +/* + * per_cpu_offset() is the offset that has to be added to a + * percpu variable to get to the instance for a certain processor. + * + * Most arches use the __per_cpu_offset array for those offsets but + * some arches have their own ways of determining the offset (x86_64, s390). + */ +#ifndef __per_cpu_offset extern unsigned long __per_cpu_offset[NR_CPUS]; #define per_cpu_offset(x) (__per_cpu_offset[x]) +#endif -/* Separate out the type, so (int[3], foo) works. */ -#define DEFINE_PER_CPU(type, name) \ - __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name - -#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ - __attribute__((__section__(".data.percpu.shared_aligned"))) \ - __typeof__(type) per_cpu__##name \ - ____cacheline_aligned_in_smp - -/* var is in discarded region: offset to particular copy we want */ -#define per_cpu(var, cpu) (*({ \ - extern int simple_identifier_##var(void); \ - RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]); })) -#define __get_cpu_var(var) per_cpu(var, smp_processor_id()) -#define __raw_get_cpu_var(var) per_cpu(var, raw_smp_processor_id()) - -/* A macro to avoid #include hell... */ -#define percpu_modcopy(pcpudst, src, size) \ -do { \ - unsigned int __i; \ - for_each_possible_cpu(__i) \ - memcpy((pcpudst)+__per_cpu_offset[__i], \ - (src), (size)); \ -} while (0) -#else /* ! SMP */ +/* + * Determine the offset for the currently active processor. + * An arch may define __my_cpu_offset to provide a more effective + * means of obtaining the offset to the per cpu variables of the + * current processor. + */ +#ifndef __my_cpu_offset +#define __my_cpu_offset per_cpu_offset(raw_smp_processor_id()) +#define my_cpu_offset per_cpu_offset(smp_processor_id()) +#else +#define my_cpu_offset __my_cpu_offset +#endif + +/* + * Add a offset to a pointer but keep the pointer as is. + * + * Only S390 provides its own means of moving the pointer. + */ +#ifndef SHIFT_PERCPU_PTR +#define SHIFT_PERCPU_PTR(__p, __offset) RELOC_HIDE((__p), (__offset)) +#endif -#define DEFINE_PER_CPU(type, name) \ - __typeof__(type) per_cpu__##name +/* + * A percpu variable may point to a discarded regions. The following are + * established ways to produce a usable pointer from the percpu variable + * offset. + */ +#define per_cpu(var, cpu) \ + (*SHIFT_PERCPU_PTR(&per_cpu_var(var), per_cpu_offset(cpu))) +#define __get_cpu_var(var) \ + (*SHIFT_PERCPU_PTR(&per_cpu_var(var), my_cpu_offset)) +#define __raw_get_cpu_var(var) \ + (*SHIFT_PERCPU_PTR(&per_cpu_var(var), __my_cpu_offset)) -#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ - DEFINE_PER_CPU(type, name) -#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var)) -#define __get_cpu_var(var) per_cpu__##var -#define __raw_get_cpu_var(var) per_cpu__##var +#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA +extern void setup_per_cpu_areas(void); +#endif + +#else /* ! SMP */ + +#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu_var(var))) +#define __get_cpu_var(var) per_cpu_var(var) +#define __raw_get_cpu_var(var) per_cpu_var(var) #endif /* SMP */ -#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name +#ifndef PER_CPU_ATTRIBUTES +#define PER_CPU_ATTRIBUTES +#endif -#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) -#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) +#define DECLARE_PER_CPU(type, name) extern PER_CPU_ATTRIBUTES \ + __typeof__(type) per_cpu_var(name) #endif /* _ASM_GENERIC_PERCPU_H_ */ diff --git a/include/asm-generic/resource.h b/include/asm-generic/resource.h index cfe3692..587566f 100644 --- a/include/asm-generic/resource.h +++ b/include/asm-generic/resource.h @@ -12,7 +12,7 @@ * then it defines them prior including asm-generic/resource.h. ) */ -#define RLIMIT_CPU 0 /* CPU time in ms */ +#define RLIMIT_CPU 0 /* CPU time in sec */ #define RLIMIT_FSIZE 1 /* Maximum filesize */ #define RLIMIT_DATA 2 /* max data size */ #define RLIMIT_STACK 3 /* max stack size */ @@ -44,8 +44,8 @@ #define RLIMIT_NICE 13 /* max nice prio allowed to raise to 0-39 for nice level 19 .. -20 */ #define RLIMIT_RTPRIO 14 /* maximum realtime priority */ - -#define RLIM_NLIMITS 15 +#define RLIMIT_RTTIME 15 /* timeout for RT tasks in us */ +#define RLIM_NLIMITS 16 /* * SuS says limits have to be unsigned. @@ -86,6 +86,7 @@ [RLIMIT_MSGQUEUE] = { MQ_BYTES_MAX, MQ_BYTES_MAX }, \ [RLIMIT_NICE] = { 0, 0 }, \ [RLIMIT_RTPRIO] = { 0, 0 }, \ + [RLIMIT_RTTIME] = { RLIM_INFINITY, RLIM_INFINITY }, \ } #endif /* __KERNEL__ */ diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index f490e43..75f2bfa 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -14,6 +14,7 @@ #define _ASM_GENERIC__TLB_H #include <linux/swap.h> +#include <linux/quicklist.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 9f584cc..f784d2f 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -9,10 +9,46 @@ /* Align . to a 8 byte boundary equals to maximum function alignment. */ #define ALIGN_FUNCTION() . = ALIGN(8) +/* The actual configuration determine if the init/exit sections + * 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) +#else +#define CPU_KEEP(sec) +#define CPU_DISCARD(sec) *(.cpu##sec) +#endif + +#if defined(CONFIG_MEMORY_HOTPLUG) +#define MEM_KEEP(sec) *(.mem##sec) +#define MEM_DISCARD(sec) +#else +#define MEM_KEEP(sec) +#define MEM_DISCARD(sec) *(.mem##sec) +#endif + + /* .data section */ #define DATA_DATA \ *(.data) \ *(.data.init.refok) \ + *(.ref.data) \ + DEV_KEEP(init.data) \ + DEV_KEEP(exit.data) \ + CPU_KEEP(init.data) \ + CPU_KEEP(exit.data) \ + MEM_KEEP(init.data) \ + MEM_KEEP(exit.data) \ . = ALIGN(8); \ VMLINUX_SYMBOL(__start___markers) = .; \ *(__markers) \ @@ -132,14 +168,25 @@ *(__ksymtab_strings) \ } \ \ + /* __*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) \ + MEM_KEEP(exit.rodata) \ + } \ + \ /* Built-in module parameters. */ \ __param : AT(ADDR(__param) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start___param) = .; \ *(__param) \ VMLINUX_SYMBOL(__stop___param) = .; \ + . = ALIGN((align)); \ VMLINUX_SYMBOL(__end_rodata) = .; \ } \ - \ . = ALIGN((align)); /* RODATA provided for backward compatibility. @@ -158,8 +205,16 @@ #define TEXT_TEXT \ ALIGN_FUNCTION(); \ *(.text) \ + *(.ref.text) \ *(.text.init.refok) \ - *(.exit.text.refok) + *(.exit.text.refok) \ + DEV_KEEP(init.text) \ + DEV_KEEP(exit.text) \ + CPU_KEEP(init.text) \ + CPU_KEEP(exit.text) \ + MEM_KEEP(init.text) \ + MEM_KEEP(exit.text) + /* sched.text is aling to function alignment to secure we have same * address even at second ld pass when generating System.map */ @@ -183,6 +238,37 @@ *(.kprobes.text) \ VMLINUX_SYMBOL(__kprobes_text_end) = .; +/* init and exit section handling */ +#define INIT_DATA \ + *(.init.data) \ + DEV_DISCARD(init.data) \ + DEV_DISCARD(init.rodata) \ + CPU_DISCARD(init.data) \ + CPU_DISCARD(init.rodata) \ + MEM_DISCARD(init.data) \ + MEM_DISCARD(init.rodata) + +#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) \ + MEM_DISCARD(exit.rodata) + +#define EXIT_TEXT \ + *(.exit.text) \ + DEV_DISCARD(exit.text) \ + CPU_DISCARD(exit.text) \ + MEM_DISCARD(exit.text) + /* DWARF debug sections. Symbols in the DWARF debugging sections are relative to the beginning of the section so we begin them at 0. */ |
