From 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 2 Jun 2009 13:01:41 +0200 Subject: cfg80211: add rfkill support To be easier on drivers and users, have cfg80211 register an rfkill structure that drivers can access. When soft-killed, simply take down all interfaces; when hard-killed the driver needs to notify us and we will take down the interfaces after the fact. While rfkilled, interfaces cannot be set UP. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/asm-generic/errno.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-generic') diff --git a/include/asm-generic/errno.h b/include/asm-generic/errno.h index e8852c092fea..28cc03bf19e6 100644 --- a/include/asm-generic/errno.h +++ b/include/asm-generic/errno.h @@ -106,4 +106,6 @@ #define EOWNERDEAD 130 /* Owner died */ #define ENOTRECOVERABLE 131 /* State not recoverable */ +#define ERFKILL 132 /* Operation not possible due to RF-kill */ + #endif -- cgit v1.2.3 From fd6c3a8dc44329d3aff9a578b5120982f63711ee Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Thu, 12 Mar 2009 10:58:33 +0000 Subject: initconst adjustments - add .init.rodata to INIT_DATA, and group all initconst flavors together - move strings generated from __setup_param() into .init.rodata - add .*init.rodata to modpost's sets of init sections - make modpost warn about references between meminit and cpuinit as well as memexit and cpuexit sections (as CPU and memory hotplug are independently selectable features) Signed-off-by: Jan Beulich Signed-off-by: Sam Ravnborg --- include/asm-generic/vmlinux.lds.h | 5 ++-- include/linux/init.h | 3 ++- scripts/mod/modpost.c | 48 +++++++++++++++++++++++++++++++-------- 3 files changed, 43 insertions(+), 13 deletions(-) (limited to 'include/asm-generic') diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 89853bcd27a6..3edb11499743 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -336,10 +336,11 @@ #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) \ + *(.init.rodata) \ + DEV_DISCARD(init.rodata) \ + CPU_DISCARD(init.rodata) \ MEM_DISCARD(init.rodata) #define INIT_TEXT \ diff --git a/include/linux/init.h b/include/linux/init.h index 0e06c176f185..9f70c9f25d4b 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -225,7 +225,8 @@ struct obs_kernel_param { * obs_kernel_param "array" too far apart in .init.setup. */ #define __setup_param(str, unique_id, fn, early) \ - static char __setup_str_##unique_id[] __initdata __aligned(1) = str; \ + static const char __setup_str_##unique_id[] __initconst \ + __aligned(1) = str; \ static struct obs_kernel_param __setup_##unique_id \ __used __section(.init.setup) \ __attribute__((aligned((sizeof(long))))) \ diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 161b7846733e..94e71efb2c14 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -763,6 +763,8 @@ static void check_section(const char *modname, struct elf_info *elf, #define ALL_INIT_DATA_SECTIONS \ + ".init.setup$", ".init.rodata$", \ + ".devinit.rodata$", ".cpuinit.rodata$", ".meminit.rodata$" \ ".init.data$", ".devinit.data$", ".cpuinit.data$", ".meminit.data$" #define ALL_EXIT_DATA_SECTIONS \ ".exit.data$", ".devexit.data$", ".cpuexit.data$", ".memexit.data$" @@ -772,21 +774,23 @@ static void check_section(const char *modname, struct elf_info *elf, #define ALL_EXIT_TEXT_SECTIONS \ ".exit.text$", ".devexit.text$", ".cpuexit.text$", ".memexit.text$" -#define ALL_INIT_SECTIONS ALL_INIT_DATA_SECTIONS, ALL_INIT_TEXT_SECTIONS -#define ALL_EXIT_SECTIONS ALL_EXIT_DATA_SECTIONS, ALL_EXIT_TEXT_SECTIONS +#define ALL_INIT_SECTIONS INIT_SECTIONS, DEV_INIT_SECTIONS, \ + CPU_INIT_SECTIONS, MEM_INIT_SECTIONS +#define ALL_EXIT_SECTIONS EXIT_SECTIONS, DEV_EXIT_SECTIONS, \ + CPU_EXIT_SECTIONS, MEM_EXIT_SECTIONS #define DATA_SECTIONS ".data$", ".data.rel$" #define TEXT_SECTIONS ".text$" -#define INIT_SECTIONS ".init.data$", ".init.text$" -#define DEV_INIT_SECTIONS ".devinit.data$", ".devinit.text$" -#define CPU_INIT_SECTIONS ".cpuinit.data$", ".cpuinit.text$" -#define MEM_INIT_SECTIONS ".meminit.data$", ".meminit.text$" +#define INIT_SECTIONS ".init.*" +#define DEV_INIT_SECTIONS ".devinit.*" +#define CPU_INIT_SECTIONS ".cpuinit.*" +#define MEM_INIT_SECTIONS ".meminit.*" -#define EXIT_SECTIONS ".exit.data$", ".exit.text$" -#define DEV_EXIT_SECTIONS ".devexit.data$", ".devexit.text$" -#define CPU_EXIT_SECTIONS ".cpuexit.data$", ".cpuexit.text$" -#define MEM_EXIT_SECTIONS ".memexit.data$", ".memexit.text$" +#define EXIT_SECTIONS ".exit.*" +#define DEV_EXIT_SECTIONS ".devexit.*" +#define CPU_EXIT_SECTIONS ".cpuexit.*" +#define MEM_EXIT_SECTIONS ".memexit.*" /* init data sections */ static const char *init_data_sections[] = { ALL_INIT_DATA_SECTIONS, NULL }; @@ -869,12 +873,36 @@ const struct sectioncheck sectioncheck[] = { .tosec = { INIT_SECTIONS, NULL }, .mismatch = XXXINIT_TO_INIT, }, +/* Do not reference cpuinit code/data from meminit code/data */ +{ + .fromsec = { MEM_INIT_SECTIONS, NULL }, + .tosec = { CPU_INIT_SECTIONS, NULL }, + .mismatch = XXXINIT_TO_INIT, +}, +/* Do not reference meminit code/data from cpuinit code/data */ +{ + .fromsec = { CPU_INIT_SECTIONS, NULL }, + .tosec = { MEM_INIT_SECTIONS, NULL }, + .mismatch = XXXINIT_TO_INIT, +}, /* Do not reference exit code/data from devexit/cpuexit/memexit code/data */ { .fromsec = { DEV_EXIT_SECTIONS, CPU_EXIT_SECTIONS, MEM_EXIT_SECTIONS, NULL }, .tosec = { EXIT_SECTIONS, NULL }, .mismatch = XXXEXIT_TO_EXIT, }, +/* Do not reference cpuexit code/data from memexit code/data */ +{ + .fromsec = { MEM_EXIT_SECTIONS, NULL }, + .tosec = { CPU_EXIT_SECTIONS, NULL }, + .mismatch = XXXEXIT_TO_EXIT, +}, +/* Do not reference memexit code/data from cpuexit code/data */ +{ + .fromsec = { CPU_EXIT_SECTIONS, NULL }, + .tosec = { MEM_EXIT_SECTIONS, NULL }, + .mismatch = XXXEXIT_TO_EXIT, +}, /* Do not use exit code/data from init code */ { .fromsec = { ALL_INIT_SECTIONS, NULL }, -- cgit v1.2.3 From ef53dae8658cf0e93d380983824a661067948d87 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 7 Jun 2009 20:46:37 +0200 Subject: Improve vmlinux.lds.h support for arch specific linker scripts To support alingment of the individual architecture specific linker scripts provide a set of general definitions in vmlinux.lds.h With these definitions applied the diverse linekr scripts can be reduced in line count and their readability are improved - IMO. A sample linker script is included to give the preferred order of the sections for the architectures that do not have any special requirments. These definitions are also a first step towards eventual support for -ffunction-sections. The definitions makes it much easier to do a global renaming of section names - but the main purpose is to clean up the linker scripts. Tim Aboot has provided a lot of inputs to improve the definitions - all faults are mine. Signed-off-by: Sam Ravnborg Cc: Tim Abbott --- include/asm-generic/vmlinux.lds.h | 231 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 224 insertions(+), 7 deletions(-) (limited to 'include/asm-generic') diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 3edb11499743..fba42236e942 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -1,4 +1,58 @@ -#include +/* + * Helper macros to support writing architecture specific + * linker scripts. + * + * A minimal linker scripts has following content: + * [This is a sample, architectures may have special requiriements] + * + * OUTPUT_FORMAT(...) + * OUTPUT_ARCH(...) + * ENTRY(...) + * SECTIONS + * { + * . = START; + * __init_begin = .; + * HEAD_SECTION + * INIT_TEXT_SECTION(PAGE_SIZE) + * INIT_DATA_SECTION(...) + * PERCPU(PAGE_SIZE) + * __init_end = .; + * + * _stext = .; + * TEXT_SECTION = 0 + * _etext = .; + * + * _sdata = .; + * RO_DATA_SECTION(PAGE_SIZE) + * RW_DATA_SECTION(...) + * _edata = .; + * + * EXCEPTION_TABLE(...) + * NOTES + * + * __bss_start = .; + * BSS_SECTION(0, 0) + * __bss_stop = .; + * _end = .; + * + * /DISCARD/ : { + * EXIT_TEXT + * EXIT_DATA + * *(.exitcall.exit) + * } + * STABS_DEBUG + * DWARF_DEBUG + * } + * + * [__init_begin, __init_end] is the init section that may be freed after init + * [_stext, _etext] is the text section + * [_sdata, _edata] is the data section + * + * Some of the included output section have their own set of constants. + * Examples are: [__initramfs_start, __initramfs_end] for initramfs and + * [__nosave_begin, __nosave_end] for the nosave data + */ + #include #ifndef LOAD_OFFSET #define LOAD_OFFSET 0 @@ -116,7 +170,36 @@ FTRACE_EVENTS() \ TRACE_SYSCALLS() -#define RO_DATA(align) \ +/* + * Data section helpers + */ +#define NOSAVE_DATA \ + . = ALIGN(PAGE_SIZE); \ + VMLINUX_SYMBOL(__nosave_begin) = .; \ + *(.data.nosave) \ + . = ALIGN(PAGE_SIZE); \ + VMLINUX_SYMBOL(__nosave_end) = .; + +#define PAGE_ALIGNED_DATA(page_align) \ + . = ALIGN(page_align); \ + *(.data.page_aligned) + +#define READ_MOSTLY_DATA(align) \ + . = ALIGN(align); \ + *(.data.read_mostly) + +#define CACHELINE_ALIGNED_DATA(align) \ + . = ALIGN(align); \ + *(.data.cacheline_aligned) + +#define INIT_TASK(align) \ + . = ALIGN(align); \ + *(.data.init_task) + +/* + * Read only Data + */ +#define RO_DATA_SECTION(align) \ . = ALIGN((align)); \ .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start_rodata) = .; \ @@ -270,9 +353,10 @@ } \ . = ALIGN((align)); -/* RODATA provided for backward compatibility. +/* RODATA & RO_DATA provided for backward compatibility. * All archs are supposed to use RO_DATA() */ -#define RODATA RO_DATA(4096) +#define RODATA RO_DATA_SECTION(4096) +#define RO_DATA(align) RO_DATA_SECTION(align) #define SECURITY_INIT \ .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ @@ -332,6 +416,31 @@ /* Section used for early init (in .S files) */ #define HEAD_TEXT *(HEAD_TEXT_SECTION) +#define HEAD_SECTION \ + .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ + HEAD_TEXT \ + } + +/* + * Exception table + */ +#define EXCEPTION_TABLE(align) \ + . = ALIGN(align); \ + __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__start___ex_table) = .; \ + *(__ex_table) \ + VMLINUX_SYMBOL(__stop___ex_table) = .; \ + } + +/* + * Init task + */ +#define INIT_TASK_DATA(align) \ + . = ALIGN(align); \ + .data.init_task : { \ + INIT_TASK \ + } + /* init and exit section handling */ #define INIT_DATA \ *(.init.data) \ @@ -364,9 +473,32 @@ 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. */ +/* + * bss (Block Started by Symbol) - uninitialized data + * zeroed during startup + */ +#define SBSS \ + .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ + *(.sbss) \ + *(.scommon) \ + } + +#define BSS(bss_align) \ + . = ALIGN(bss_align); \ + .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__bss_start) = .; \ + *(.bss.page_aligned) \ + *(.dynbss) \ + *(.bss) \ + *(COMMON) \ + VMLINUX_SYMBOL(__bss_stop) = .; \ + } + +/* + * DWARF debug sections. + * Symbols in the DWARF debugging sections are relative to + * the beginning of the section so we begin them at 0. + */ #define DWARF_DEBUG \ /* DWARF 1 */ \ .debug 0 : { *(.debug) } \ @@ -433,6 +565,12 @@ VMLINUX_SYMBOL(__stop_notes) = .; \ } +#define INIT_SETUP(initsetup_align) \ + . = ALIGN(initsetup_align); \ + VMLINUX_SYMBOL(__setup_start) = .; \ + *(.init.setup) \ + VMLINUX_SYMBOL(__setup_end) = .; + #define INITCALLS \ *(.initcallearly.init) \ VMLINUX_SYMBOL(__early_initcall_end) = .; \ @@ -454,6 +592,31 @@ *(.initcall7.init) \ *(.initcall7s.init) +#define INIT_CALLS \ + VMLINUX_SYMBOL(__initcall_start) = .; \ + INITCALLS \ + VMLINUX_SYMBOL(__initcall_end) = .; + +#define CON_INITCALL \ + VMLINUX_SYMBOL(__con_initcall_start) = .; \ + *(.con_initcall.init) \ + VMLINUX_SYMBOL(__con_initcall_end) = .; + +#define SECURITY_INITCALL \ + VMLINUX_SYMBOL(__security_initcall_start) = .; \ + *(.security_initcall.init) \ + VMLINUX_SYMBOL(__security_initcall_end) = .; + +#ifdef CONFIG_BLK_DEV_INITRD +#define INIT_RAM_FS \ + . = ALIGN(PAGE_SIZE); \ + VMLINUX_SYMBOL(__initramfs_start) = .; \ + *(.init.ramfs) \ + VMLINUX_SYMBOL(__initramfs_end) = .; +#else +#define INITRAMFS +#endif + /** * PERCPU_VADDR - define output section for percpu area * @vaddr: explicit base address (optional) @@ -510,3 +673,57 @@ *(.data.percpu.shared_aligned) \ VMLINUX_SYMBOL(__per_cpu_end) = .; \ } + + +/* + * Definition of the high level *_SECTION macros + * They will fit only a subset of the architectures + */ + + +/* + * Writeable data. + * All sections are combined in a single .data section. + * The sections following CONSTRUCTORS are arranged so their + * typical alignment matches. + * A cacheline is typical/always less than a PAGE_SIZE so + * the sections that has this restriction (or similar) + * is located before the ones requiring PAGE_SIZE alignment. + * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which + * matches the requirment of PAGE_ALIGNED_DATA. + * +/* use 0 as page_align if page_aligned data is not used */ +#define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask) \ + . = ALIGN(PAGE_SIZE); \ + .data : AT(ADDR(.data) - LOAD_OFFSET) { \ + INIT_TASK(inittask) \ + CACHELINE_ALIGNED_DATA(cacheline) \ + READ_MOSTLY_DATA(cacheline) \ + DATA_DATA \ + CONSTRUCTORS \ + NOSAVE_DATA(nosave) \ + PAGE_ALIGNED_DATA(pagealigned) \ + } + +#define INIT_TEXT_SECTION(inittext_align) \ + . = ALIGN(inittext_align); \ + .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(_sinittext) = .; \ + INIT_TEXT \ + VMLINUX_SYMBOL(_einittext) = .; \ + } + +#define INIT_DATA_SECTION(initsetup_align) \ + .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ + INIT_DATA \ + INIT_SETUP(initsetup_align) \ + INIT_CALLS \ + CON_INITCALL \ + SECURITY_INITCALL \ + INIT_RAM_FS \ + } + +#define BSS_SECTION(sbss_align, bss_align) \ + SBSS \ + BSS(bss_align) \ + . = ALIGN(4); \ -- cgit v1.2.3 From 7923f90fffa8746f6457d4eea2109fd3d6414189 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 14 Jun 2009 22:10:41 +0200 Subject: vmlinux.lds.h update Updated after review by Tim Abbott. - Use HEAD_TEXT_SECTION - Drop use of section-names.h and delete file - Introduce EXIT_CALL Deleting section-names.h required a few simple updates of init.h Signed-off-by: Sam Ravnborg Cc: Tim Abbott --- include/asm-generic/vmlinux.lds.h | 17 ++++++++++------- include/linux/init.h | 4 +--- include/linux/section-names.h | 6 ------ 3 files changed, 11 insertions(+), 16 deletions(-) delete mode 100644 include/linux/section-names.h (limited to 'include/asm-generic') diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index fba42236e942..7381f701f3f3 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -12,7 +12,7 @@ * { * . = START; * __init_begin = .; - * HEAD_SECTION + * HEAD_TEXT_SECTION * INIT_TEXT_SECTION(PAGE_SIZE) * INIT_DATA_SECTION(...) * PERCPU(PAGE_SIZE) @@ -38,7 +38,7 @@ * /DISCARD/ : { * EXIT_TEXT * EXIT_DATA - * *(.exitcall.exit) + * EXIT_CALL * } * STABS_DEBUG * DWARF_DEBUG @@ -52,7 +52,6 @@ * Examples are: [__initramfs_start, __initramfs_end] for initramfs and * [__nosave_begin, __nosave_end] for the nosave data */ - #include #ifndef LOAD_OFFSET #define LOAD_OFFSET 0 @@ -414,9 +413,9 @@ #endif /* Section used for early init (in .S files) */ -#define HEAD_TEXT *(HEAD_TEXT_SECTION) +#define HEAD_TEXT *(.head.text) -#define HEAD_SECTION \ +#define HEAD_TEXT_SECTION \ .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ HEAD_TEXT \ } @@ -473,6 +472,9 @@ CPU_DISCARD(exit.text) \ MEM_DISCARD(exit.text) +#define EXIT_CALL \ + *(.exitcall.exit) + /* * bss (Block Started by Symbol) - uninitialized data * zeroed during startup @@ -692,7 +694,7 @@ * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which * matches the requirment of PAGE_ALIGNED_DATA. * -/* use 0 as page_align if page_aligned data is not used */ + * use 0 as page_align if page_aligned data is not used */ #define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask) \ . = ALIGN(PAGE_SIZE); \ .data : AT(ADDR(.data) - LOAD_OFFSET) { \ @@ -726,4 +728,5 @@ #define BSS_SECTION(sbss_align, bss_align) \ SBSS \ BSS(bss_align) \ - . = ALIGN(4); \ + . = ALIGN(4); + diff --git a/include/linux/init.h b/include/linux/init.h index 9f70c9f25d4b..b2189803f19a 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -2,8 +2,6 @@ #define _LINUX_INIT_H #include -#include -#include /* These macros are used to mark some functions or * initialized data (doesn't apply to uninitialized data) @@ -101,7 +99,7 @@ #define __memexitconst __section(.memexit.rodata) /* For assembly routines */ -#define __HEAD .section __stringify(HEAD_TEXT_SECTION),"ax" +#define __HEAD .section ".head.text","ax" #define __INIT .section ".init.text","ax" #define __FINIT .previous diff --git a/include/linux/section-names.h b/include/linux/section-names.h deleted file mode 100644 index c956f4eb2adf..000000000000 --- a/include/linux/section-names.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __LINUX_SECTION_NAMES_H -#define __LINUX_SECTION_NAMES_H - -#define HEAD_TEXT_SECTION .head.text - -#endif /* !__LINUX_SECTION_NAMES_H */ -- cgit v1.2.3 From 09d4e0edd4614e787393acc582ac701c6ec3565b Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Fri, 12 Jun 2009 21:10:05 +0000 Subject: lib: Provide generic atomic64_t implementation Many processor architectures have no 64-bit atomic instructions, but we need atomic64_t in order to support the perf_counter subsystem. This adds an implementation of 64-bit atomic operations using hashed spinlocks to provide atomicity. For each atomic operation, the address of the atomic64_t variable is hashed to an index into an array of 16 spinlocks. That spinlock is taken (with interrupts disabled) around the operation, which can then be coded non-atomically within the lock. On UP, all the spinlock manipulation goes away and we simply disable interrupts around each operation. In fact gcc eliminates the whole atomic64_lock variable as well. Signed-off-by: Paul Mackerras Signed-off-by: Benjamin Herrenschmidt --- include/asm-generic/atomic64.h | 42 ++++++++++ lib/Kconfig | 6 ++ lib/Makefile | 2 + lib/atomic64.c | 175 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 225 insertions(+) create mode 100644 include/asm-generic/atomic64.h create mode 100644 lib/atomic64.c (limited to 'include/asm-generic') diff --git a/include/asm-generic/atomic64.h b/include/asm-generic/atomic64.h new file mode 100644 index 000000000000..b18ce4f9ee3d --- /dev/null +++ b/include/asm-generic/atomic64.h @@ -0,0 +1,42 @@ +/* + * Generic implementation of 64-bit atomics using spinlocks, + * useful on processors that don't have 64-bit atomic instructions. + * + * Copyright © 2009 Paul Mackerras, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _ASM_GENERIC_ATOMIC64_H +#define _ASM_GENERIC_ATOMIC64_H + +typedef struct { + long long counter; +} atomic64_t; + +#define ATOMIC64_INIT(i) { (i) } + +extern long long atomic64_read(const atomic64_t *v); +extern void atomic64_set(atomic64_t *v, long long i); +extern void atomic64_add(long long a, atomic64_t *v); +extern long long atomic64_add_return(long long a, atomic64_t *v); +extern void atomic64_sub(long long a, atomic64_t *v); +extern long long atomic64_sub_return(long long a, atomic64_t *v); +extern long long atomic64_dec_if_positive(atomic64_t *v); +extern long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n); +extern long long atomic64_xchg(atomic64_t *v, long long new); +extern int atomic64_add_unless(atomic64_t *v, long long a, long long u); + +#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) +#define atomic64_inc(v) atomic64_add(1LL, (v)) +#define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) +#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) +#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) +#define atomic64_dec(v) atomic64_sub(1LL, (v)) +#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) +#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) + +#endif /* _ASM_GENERIC_ATOMIC64_H */ diff --git a/lib/Kconfig b/lib/Kconfig index 9960be04cbbe..bb1326d3839c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -194,4 +194,10 @@ config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS config NLATTR bool +# +# Generic 64-bit atomic support is selected if needed +# +config GENERIC_ATOMIC64 + bool + endmenu diff --git a/lib/Makefile b/lib/Makefile index 34c5c0e6222e..8e9bcf9d3261 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -95,6 +95,8 @@ obj-$(CONFIG_DMA_API_DEBUG) += dma-debug.o obj-$(CONFIG_GENERIC_CSUM) += checksum.o +obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o + hostprogs-y := gen_crc32table clean-files := crc32table.h diff --git a/lib/atomic64.c b/lib/atomic64.c new file mode 100644 index 000000000000..c5e725562416 --- /dev/null +++ b/lib/atomic64.c @@ -0,0 +1,175 @@ +/* + * Generic implementation of 64-bit atomics using spinlocks, + * useful on processors that don't have 64-bit atomic instructions. + * + * Copyright © 2009 Paul Mackerras, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include +#include +#include +#include +#include + +/* + * We use a hashed array of spinlocks to provide exclusive access + * to each atomic64_t variable. Since this is expected to used on + * systems with small numbers of CPUs (<= 4 or so), we use a + * relatively small array of 16 spinlocks to avoid wasting too much + * memory on the spinlock array. + */ +#define NR_LOCKS 16 + +/* + * Ensure each lock is in a separate cacheline. + */ +static union { + spinlock_t lock; + char pad[L1_CACHE_BYTES]; +} atomic64_lock[NR_LOCKS] __cacheline_aligned_in_smp; + +static inline spinlock_t *lock_addr(const atomic64_t *v) +{ + unsigned long addr = (unsigned long) v; + + addr >>= L1_CACHE_SHIFT; + addr ^= (addr >> 8) ^ (addr >> 16); + return &atomic64_lock[addr & (NR_LOCKS - 1)].lock; +} + +long long atomic64_read(const atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter; + spin_unlock_irqrestore(lock, flags); + return val; +} + +void atomic64_set(atomic64_t *v, long long i) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + + spin_lock_irqsave(lock, flags); + v->counter = i; + spin_unlock_irqrestore(lock, flags); +} + +void atomic64_add(long long a, atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + + spin_lock_irqsave(lock, flags); + v->counter += a; + spin_unlock_irqrestore(lock, flags); +} + +long long atomic64_add_return(long long a, atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter += a; + spin_unlock_irqrestore(lock, flags); + return val; +} + +void atomic64_sub(long long a, atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + + spin_lock_irqsave(lock, flags); + v->counter -= a; + spin_unlock_irqrestore(lock, flags); +} + +long long atomic64_sub_return(long long a, atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter -= a; + spin_unlock_irqrestore(lock, flags); + return val; +} + +long long atomic64_dec_if_positive(atomic64_t *v) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter - 1; + if (val >= 0) + v->counter = val; + spin_unlock_irqrestore(lock, flags); + return val; +} + +long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter; + if (val == o) + v->counter = n; + spin_unlock_irqrestore(lock, flags); + return val; +} + +long long atomic64_xchg(atomic64_t *v, long long new) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + long long val; + + spin_lock_irqsave(lock, flags); + val = v->counter; + v->counter = new; + spin_unlock_irqrestore(lock, flags); + return val; +} + +int atomic64_add_unless(atomic64_t *v, long long a, long long u) +{ + unsigned long flags; + spinlock_t *lock = lock_addr(v); + int ret = 1; + + spin_lock_irqsave(lock, flags); + if (v->counter != u) { + v->counter += a; + ret = 0; + } + spin_unlock_irqrestore(lock, flags); + return ret; +} + +static int init_atomic64_lock(void) +{ + int i; + + for (i = 0; i < NR_LOCKS; ++i) + spin_lock_init(&atomic64_lock[i].lock); + return 0; +} + +pure_initcall(init_atomic64_lock); -- cgit v1.2.3 From e4c9dd0fbad60c098a026e9b06d9de1bc98c5e89 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 16 Jun 2009 15:33:47 -0700 Subject: kmap_types: make most arches use generic header file Convert most arches to use asm-generic/kmap_types.h. Move the KM_FENCE_ macro additions into asm-generic/kmap_types.h, controlled by __WITH_KM_FENCE from each arch's kmap_types.h file. Would be nice to be able to add custom KM_types per arch, but I don't yet see a nice, clean way to do that. Built on x86_64, i386, mips, sparc, alpha(tonyb), powerpc(tonyb), and 68k(tonyb). Note: avr32 should be able to remove KM_PTE2 (since it's not used) and then just use the generic kmap_types.h file. Get avr32 maintainer approval. Signed-off-by: Randy Dunlap Cc: Acked-by: Mike Frysinger Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Bryan Wu Cc: Mikael Starvik Cc: Hirokazu Takata Cc: "Luck Tony" Cc: Geert Uytterhoeven Cc: Ralf Baechle Cc: David Howells Cc: Kyle McMartin Cc: Martin Schwidefsky Cc: Paul Mundt Cc: "David S. Miller" Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Arnd Bergmann Cc: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/kmap_types.h | 24 +++--------------------- arch/blackfin/include/asm/kmap_types.h | 17 +---------------- arch/cris/include/asm/kmap_types.h | 17 +---------------- arch/h8300/include/asm/kmap_types.h | 17 +---------------- arch/ia64/include/asm/kmap_types.h | 24 +++--------------------- arch/m32r/include/asm/kmap_types.h | 23 +++-------------------- arch/m68k/include/asm/kmap_types.h | 17 +---------------- arch/microblaze/include/asm/kmap_types.h | 25 +------------------------ arch/mips/include/asm/kmap_types.h | 24 +++--------------------- arch/mn10300/include/asm/kmap_types.h | 27 +-------------------------- arch/parisc/include/asm/kmap_types.h | 24 +++--------------------- arch/s390/include/asm/kmap_types.h | 17 +---------------- arch/sh/include/asm/kmap_types.h | 24 +++--------------------- arch/sparc/include/asm/kmap_types.h | 17 +---------------- arch/x86/include/asm/kmap_types.h | 23 +++-------------------- arch/xtensa/include/asm/kmap_types.h | 27 +-------------------------- include/asm-generic/kmap_types.h | 2 +- 17 files changed, 31 insertions(+), 318 deletions(-) (limited to 'include/asm-generic') diff --git a/arch/alpha/include/asm/kmap_types.h b/arch/alpha/include/asm/kmap_types.h index 3e6735a34c57..a8d4ec8ea4b6 100644 --- a/arch/alpha/include/asm/kmap_types.h +++ b/arch/alpha/include/asm/kmap_types.h @@ -3,30 +3,12 @@ /* Dummy header just to define km_type. */ - #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif diff --git a/arch/blackfin/include/asm/kmap_types.h b/arch/blackfin/include/asm/kmap_types.h index e215f7104974..0a88622339ee 100644 --- a/arch/blackfin/include/asm/kmap_types.h +++ b/arch/blackfin/include/asm/kmap_types.h @@ -1,21 +1,6 @@ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif diff --git a/arch/cris/include/asm/kmap_types.h b/arch/cris/include/asm/kmap_types.h index 492988cb9077..d2d643c4ea59 100644 --- a/arch/cris/include/asm/kmap_types.h +++ b/arch/cris/include/asm/kmap_types.h @@ -5,21 +5,6 @@ * is actually used on cris. */ -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif diff --git a/arch/h8300/include/asm/kmap_types.h b/arch/h8300/include/asm/kmap_types.h index 1ec8a3427120..be12a7160116 100644 --- a/arch/h8300/include/asm/kmap_types.h +++ b/arch/h8300/include/asm/kmap_types.h @@ -1,21 +1,6 @@ #ifndef _ASM_H8300_KMAP_TYPES_H #define _ASM_H8300_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif diff --git a/arch/ia64/include/asm/kmap_types.h b/arch/ia64/include/asm/kmap_types.h index 5d1658aa2b3b..05d5f9996105 100644 --- a/arch/ia64/include/asm/kmap_types.h +++ b/arch/ia64/include/asm/kmap_types.h @@ -1,30 +1,12 @@ #ifndef _ASM_IA64_KMAP_TYPES_H #define _ASM_IA64_KMAP_TYPES_H - #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif /* _ASM_IA64_KMAP_TYPES_H */ diff --git a/arch/m32r/include/asm/kmap_types.h b/arch/m32r/include/asm/kmap_types.h index fa94dc6410ea..4cdb5e3a06bf 100644 --- a/arch/m32r/include/asm/kmap_types.h +++ b/arch/m32r/include/asm/kmap_types.h @@ -2,28 +2,11 @@ #define __M32R_KMAP_TYPES_H #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif /* __M32R_KMAP_TYPES_H */ diff --git a/arch/m68k/include/asm/kmap_types.h b/arch/m68k/include/asm/kmap_types.h index c843c63d3801..3413cc1390ec 100644 --- a/arch/m68k/include/asm/kmap_types.h +++ b/arch/m68k/include/asm/kmap_types.h @@ -1,21 +1,6 @@ #ifndef __ASM_M68K_KMAP_TYPES_H #define __ASM_M68K_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif /* __ASM_M68K_KMAP_TYPES_H */ diff --git a/arch/microblaze/include/asm/kmap_types.h b/arch/microblaze/include/asm/kmap_types.h index 4d7e222f5dd7..25975252d83d 100644 --- a/arch/microblaze/include/asm/kmap_types.h +++ b/arch/microblaze/include/asm/kmap_types.h @@ -1,29 +1,6 @@ -/* - * Copyright (C) 2006 Atmark Techno, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - #ifndef _ASM_MICROBLAZE_KMAP_TYPES_H #define _ASM_MICROBLAZE_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR, -}; +#include #endif /* _ASM_MICROBLAZE_KMAP_TYPES_H */ diff --git a/arch/mips/include/asm/kmap_types.h b/arch/mips/include/asm/kmap_types.h index 806aae3c5338..58e91ed0388f 100644 --- a/arch/mips/include/asm/kmap_types.h +++ b/arch/mips/include/asm/kmap_types.h @@ -1,30 +1,12 @@ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H - #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif diff --git a/arch/mn10300/include/asm/kmap_types.h b/arch/mn10300/include/asm/kmap_types.h index 3398f9f35603..76d093b58d4f 100644 --- a/arch/mn10300/include/asm/kmap_types.h +++ b/arch/mn10300/include/asm/kmap_types.h @@ -1,31 +1,6 @@ -/* MN10300 kmap_atomic() slot IDs - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif /* _ASM_KMAP_TYPES_H */ diff --git a/arch/parisc/include/asm/kmap_types.h b/arch/parisc/include/asm/kmap_types.h index 806aae3c5338..58e91ed0388f 100644 --- a/arch/parisc/include/asm/kmap_types.h +++ b/arch/parisc/include/asm/kmap_types.h @@ -1,30 +1,12 @@ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H - #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif diff --git a/arch/s390/include/asm/kmap_types.h b/arch/s390/include/asm/kmap_types.h index fd1574648223..94ec3ee07983 100644 --- a/arch/s390/include/asm/kmap_types.h +++ b/arch/s390/include/asm/kmap_types.h @@ -2,22 +2,7 @@ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif #endif /* __KERNEL__ */ diff --git a/arch/sh/include/asm/kmap_types.h b/arch/sh/include/asm/kmap_types.h index 84d565c696be..5962b08b6dd8 100644 --- a/arch/sh/include/asm/kmap_types.h +++ b/arch/sh/include/asm/kmap_types.h @@ -3,30 +3,12 @@ /* Dummy header just to define km_type. */ - #ifdef CONFIG_DEBUG_HIGHMEM -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif diff --git a/arch/sparc/include/asm/kmap_types.h b/arch/sparc/include/asm/kmap_types.h index 602f5e034f7a..aad21745fbb9 100644 --- a/arch/sparc/include/asm/kmap_types.h +++ b/arch/sparc/include/asm/kmap_types.h @@ -5,21 +5,6 @@ * is actually used on sparc. -DaveM */ -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif diff --git a/arch/x86/include/asm/kmap_types.h b/arch/x86/include/asm/kmap_types.h index 5759c165a5cf..9e00a731a7fb 100644 --- a/arch/x86/include/asm/kmap_types.h +++ b/arch/x86/include/asm/kmap_types.h @@ -2,28 +2,11 @@ #define _ASM_X86_KMAP_TYPES_H #if defined(CONFIG_X86_32) && defined(CONFIG_DEBUG_HIGHMEM) -# define D(n) __KM_FENCE_##n , -#else -# define D(n) +#define __WITH_KM_FENCE #endif -enum km_type { -D(0) KM_BOUNCE_READ, -D(1) KM_SKB_SUNRPC_DATA, -D(2) KM_SKB_DATA_SOFTIRQ, -D(3) KM_USER0, -D(4) KM_USER1, -D(5) KM_BIO_SRC_IRQ, -D(6) KM_BIO_DST_IRQ, -D(7) KM_PTE0, -D(8) KM_PTE1, -D(9) KM_IRQ0, -D(10) KM_IRQ1, -D(11) KM_SOFTIRQ0, -D(12) KM_SOFTIRQ1, -D(13) KM_TYPE_NR -}; +#include -#undef D +#undef __WITH_KM_FENCE #endif /* _ASM_X86_KMAP_TYPES_H */ diff --git a/arch/xtensa/include/asm/kmap_types.h b/arch/xtensa/include/asm/kmap_types.h index 9e822d2e3bce..11c687e527f1 100644 --- a/arch/xtensa/include/asm/kmap_types.h +++ b/arch/xtensa/include/asm/kmap_types.h @@ -1,31 +1,6 @@ -/* - * include/asm-xtensa/kmap_types.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 - 2005 Tensilica Inc. - */ - #ifndef _XTENSA_KMAP_TYPES_H #define _XTENSA_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include #endif /* _XTENSA_KMAP_TYPES_H */ diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h index 58c33055c304..54e8b3d956b7 100644 --- a/include/asm-generic/kmap_types.h +++ b/include/asm-generic/kmap_types.h @@ -1,7 +1,7 @@ #ifndef _ASM_GENERIC_KMAP_TYPES_H #define _ASM_GENERIC_KMAP_TYPES_H -#ifdef CONFIG_DEBUG_HIGHMEM +#ifdef __WITH_KM_FENCE # define D(n) __KM_FENCE_##n , #else # define D(n) -- cgit v1.2.3