/* These are for everybody (although not all archs will actually
discard it in modules) */
-#define __init __attribute__ ((__section__ (".init.text")))
-#define __initdata __attribute__ ((__section__ (".init.data")))
-#define __exitdata __attribute__ ((__section__(".exit.data")))
-#define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
+#define __init __section(.init.text) __cold notrace
+#define __initdata __section(.init.data)
+#define __initconst __section(.init.rodata)
+#define __exitdata __section(.exit.data)
+#define __exit_call __used __section(.exitcall.exit)
+
+/* modpost check for section mismatches during the kernel build.
+ * A section mismatch happens when there are references from a
+ * code or data section to an init section (both code or data).
+ * The init sections are (for most archs) discarded by the kernel
+ * when early init has completed so all such references are potential bugs.
+ * For exit sections the same issue exists.
+ * The following markers are used for the cases where the reference to
+ * the *init / *exit section (code or data) is valid and will teach
+ * modpost not to issue a warning.
+ * The markers follow same syntax rules as __init / __initdata. */
+#define __ref __section(.ref.text) noinline
+#define __refdata __section(.ref.data)
+#define __refconst __section(.ref.rodata)
+
+/* backward compatibility note
+ * A few places hardcode the old section names:
+ * .text.init.refok
+ * .data.init.refok
+ * .exit.text.refok
+ * They should be converted to use the defines from this file
+ */
+
+/* compatibility defines */
+#define __init_refok __ref
+#define __initdata_refok __refdata
+#define __exit_refok __ref
+
#ifdef MODULE
-#define __exit __attribute__ ((__section__(".exit.text")))
+#define __exitused
#else
-#define __exit __attribute_used__ __attribute__ ((__section__(".exit.text")))
+#define __exitused __used
#endif
+#define __exit __section(.exit.text) __exitused __cold
+
+/* Used for HOTPLUG */
+#define __devinit __section(.devinit.text) __cold
+#define __devinitdata __section(.devinit.data)
+#define __devinitconst __section(.devinit.rodata)
+#define __devexit __section(.devexit.text) __exitused __cold
+#define __devexitdata __section(.devexit.data)
+#define __devexitconst __section(.devexit.rodata)
+
+/* Used for HOTPLUG_CPU */
+#define __cpuinit __section(.cpuinit.text) __cold
+#define __cpuinitdata __section(.cpuinit.data)
+#define __cpuinitconst __section(.cpuinit.rodata)
+#define __cpuexit __section(.cpuexit.text) __exitused __cold
+#define __cpuexitdata __section(.cpuexit.data)
+#define __cpuexitconst __section(.cpuexit.rodata)
+
+/* Used for MEMORY_HOTPLUG */
+#define __meminit __section(.meminit.text) __cold
+#define __meminitdata __section(.meminit.data)
+#define __meminitconst __section(.meminit.rodata)
+#define __memexit __section(.memexit.text) __exitused __cold
+#define __memexitdata __section(.memexit.data)
+#define __memexitconst __section(.memexit.rodata)
+
/* For assembly routines */
+#define __HEAD .section ".head.text","ax"
#define __INIT .section ".init.text","ax"
#define __FINIT .previous
+
#define __INITDATA .section ".init.data","aw"
+#define __FINITDATA .previous
+
+#define __DEVINIT .section ".devinit.text", "ax"
+#define __DEVINITDATA .section ".devinit.data", "aw"
+
+#define __CPUINIT .section ".cpuinit.text", "ax"
+#define __CPUINITDATA .section ".cpuinit.data", "aw"
+
+#define __MEMINIT .section ".meminit.text", "ax"
+#define __MEMINITDATA .section ".meminit.data", "aw"
+
+/* silence warnings when references are OK */
+#define __REF .section ".ref.text", "ax"
+#define __REFDATA .section ".ref.data", "aw"
+#define __REFCONST .section ".ref.rodata", "aw"
#ifndef __ASSEMBLY__
/*
extern initcall_t __security_initcall_start[], __security_initcall_end[];
/* Defined in init/main.c */
-extern char saved_command_line[];
+extern int do_one_initcall(initcall_t fn);
+extern char __initdata boot_command_line[];
+extern char *saved_command_line;
extern unsigned int reset_devices;
/* used by init/main.c */
-extern void setup_arch(char **);
+void setup_arch(char **);
+void prepare_namespace(void);
+
+extern void (*late_time_init)(void);
#endif
*/
#define __define_initcall(level,fn,id) \
- static initcall_t __initcall_##fn##id __attribute_used__ \
+ static initcall_t __initcall_##fn##id __used \
__attribute__((__section__(".initcall" level ".init"))) = fn
/*
+ * Early initcalls run before initializing SMP.
+ *
+ * Only for built-in code, not modules.
+ */
+#define early_initcall(fn) __define_initcall("early",fn,early)
+
+/*
* A "pure" initcall has no dependencies on anything else, and purely
* initializes variables that couldn't be statically initialized.
*
* This only exists for built-in code, not for modules.
*/
-#define pure_initcall(fn) __define_initcall("0",fn,1)
+#define pure_initcall(fn) __define_initcall("0",fn,0)
#define core_initcall(fn) __define_initcall("1",fn,1)
#define core_initcall_sync(fn) __define_initcall("1s",fn,1s)
#define subsys_initcall_sync(fn) __define_initcall("4s",fn,4s)
#define fs_initcall(fn) __define_initcall("5",fn,5)
#define fs_initcall_sync(fn) __define_initcall("5s",fn,5s)
+#define rootfs_initcall(fn) __define_initcall("rootfs",fn,rootfs)
#define device_initcall(fn) __define_initcall("6",fn,6)
#define device_initcall_sync(fn) __define_initcall("6s",fn,6s)
#define late_initcall(fn) __define_initcall("7",fn,7)
#define console_initcall(fn) \
static initcall_t __initcall_##fn \
- __attribute_used__ __attribute__((__section__(".con_initcall.init")))=fn
+ __used __section(.con_initcall.init) = fn
#define security_initcall(fn) \
static initcall_t __initcall_##fn \
- __attribute_used__ __attribute__((__section__(".security_initcall.init"))) = fn
+ __used __section(.security_initcall.init) = fn
struct obs_kernel_param {
const char *str;
* 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 = str; \
+ static char __setup_str_##unique_id[] __initdata __aligned(1) = str; \
static struct obs_kernel_param __setup_##unique_id \
- __attribute_used__ \
- __attribute__((__section__(".init.setup"))) \
+ __used __section(.init.setup) \
__attribute__((aligned((sizeof(long))))) \
= { __setup_str_##unique_id, fn, early }
-#define __setup_null_param(str, unique_id) \
- __setup_param(str, unique_id, NULL, 0)
-
#define __setup(str, fn) \
__setup_param(str, fn, fn, 0)
-#define __obsolete_setup(str) \
- __setup_null_param(str, __LINE__)
-
/* NOTE: fn is as per module_param, not __setup! Emits warning if fn
* returns non-zero. */
#define early_param(str, fn) \
__setup_param(str, fn, fn, 1)
-/* Relies on saved_command_line being set */
+/* Relies on boot_command_line being set */
void __init parse_early_param(void);
#endif /* __ASSEMBLY__ */
* module_init() - driver initialization entry point
* @x: function to be run at kernel boot time or module insertion
*
- * module_init() will either be called during do_initcalls (if
+ * module_init() will either be called during do_initcalls() (if
* builtin) or at module insertion time (if a module). There can only
* be one per module.
*/
#define security_initcall(fn) module_init(fn)
-/* These macros create a dummy inline: gcc 2.9x does not count alias
- as usage, hence the `unused function' warning when __init functions
- are declared static. We use the dummy __*_module_inline functions
- both to kill the warning and check the type of the init/cleanup
- function. */
-
-/* Each module must use one module_init(), or one no_module_init */
+/* Each module must use one module_init(). */
#define module_init(initfn) \
static inline initcall_t __inittest(void) \
{ return initfn; } \
void cleanup_module(void) __attribute__((alias(#exitfn)));
#define __setup_param(str, unique_id, fn) /* nothing */
-#define __setup_null_param(str, unique_id) /* nothing */
#define __setup(str, func) /* nothing */
-#define __obsolete_setup(str) /* nothing */
#endif
-/* Data marked not to be saved by software_suspend() */
-#define __nosavedata __attribute__ ((__section__ (".data.nosave")))
+/* Data marked not to be saved by software suspend */
+#define __nosavedata __section(.data.nosave)
/* This means "can be init if no module support, otherwise module load
may call it." */
#define __initdata_or_module __initdata
#endif /*CONFIG_MODULES*/
-#ifdef CONFIG_HOTPLUG
-#define __devinit
-#define __devinitdata
-#define __devexit
-#define __devexitdata
-#else
-#define __devinit __init
-#define __devinitdata __initdata
-#define __devexit __exit
-#define __devexitdata __exitdata
-#endif
-
-#ifdef CONFIG_HOTPLUG_CPU
-#define __cpuinit
-#define __cpuinitdata
-#define __cpuexit
-#define __cpuexitdata
-#else
-#define __cpuinit __init
-#define __cpuinitdata __initdata
-#define __cpuexit __exit
-#define __cpuexitdata __exitdata
-#endif
-
-#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
- || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
-#define __meminit
-#define __meminitdata
-#define __memexit
-#define __memexitdata
-#else
-#define __meminit __init
-#define __meminitdata __initdata
-#define __memexit __exit
-#define __memexitdata __exitdata
-#endif
-
/* Functions marked as __devexit may be discarded at kernel link time, depending
on config options. Newer versions of binutils detect references from
retained sections to discarded sections and flag an error. Pointers to
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff