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- #ifndef _LINUX_KERNEL_H
- #define _LINUX_KERNEL_H
- /*
- * 'kernel.h' contains some often-used function prototypes etc
- */
- #ifdef __KERNEL__
- #include <stdarg.h>
- #include <linux/linkage.h>
- #include <linux/stddef.h>
- #include <linux/types.h>
- #include <linux/compiler.h>
- #include <linux/bitops.h>
- #include <linux/log2.h>
- #include <linux/typecheck.h>
- #include <linux/ratelimit.h>
- #include <linux/dynamic_debug.h>
- #include <asm/byteorder.h>
- #include <asm/bug.h>
- extern const char linux_banner[];
- extern const char linux_proc_banner[];
- #define USHORT_MAX ((u16)(~0U))
- #define SHORT_MAX ((s16)(USHORT_MAX>>1))
- #define SHORT_MIN (-SHORT_MAX - 1)
- #define INT_MAX ((int)(~0U>>1))
- #define INT_MIN (-INT_MAX - 1)
- #define UINT_MAX (~0U)
- #define LONG_MAX ((long)(~0UL>>1))
- #define LONG_MIN (-LONG_MAX - 1)
- #define ULONG_MAX (~0UL)
- #define LLONG_MAX ((long long)(~0ULL>>1))
- #define LLONG_MIN (-LLONG_MAX - 1)
- #define ULLONG_MAX (~0ULL)
- #define STACK_MAGIC 0xdeadbeef
- #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
- #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
- #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
- #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
- #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
- #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
- #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
- #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
- #define DIV_ROUND_CLOSEST(x, divisor)( \
- { \
- typeof(divisor) __divisor = divisor; \
- (((x) + ((__divisor) / 2)) / (__divisor)); \
- } \
- )
- #define _RET_IP_ (unsigned long)__builtin_return_address(0)
- #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
- #ifdef CONFIG_LBD
- # include <asm/div64.h>
- # define sector_div(a, b) do_div(a, b)
- #else
- # define sector_div(n, b)( \
- { \
- int _res; \
- _res = (n) % (b); \
- (n) /= (b); \
- _res; \
- } \
- )
- #endif
- /**
- * upper_32_bits - return bits 32-63 of a number
- * @n: the number we're accessing
- *
- * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
- * the "right shift count >= width of type" warning when that quantity is
- * 32-bits.
- */
- #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
- /**
- * lower_32_bits - return bits 0-31 of a number
- * @n: the number we're accessing
- */
- #define lower_32_bits(n) ((u32)(n))
- #define KERN_EMERG "<0>" /* system is unusable */
- #define KERN_ALERT "<1>" /* action must be taken immediately */
- #define KERN_CRIT "<2>" /* critical conditions */
- #define KERN_ERR "<3>" /* error conditions */
- #define KERN_WARNING "<4>" /* warning conditions */
- #define KERN_NOTICE "<5>" /* normal but significant condition */
- #define KERN_INFO "<6>" /* informational */
- #define KERN_DEBUG "<7>" /* debug-level messages */
- /* Use the default kernel loglevel */
- #define KERN_DEFAULT "<d>"
- /*
- * Annotation for a "continued" line of log printout (only done after a
- * line that had no enclosing \n). Only to be used by core/arch code
- * during early bootup (a continued line is not SMP-safe otherwise).
- */
- #define KERN_CONT "<c>"
- extern int console_printk[];
- #define console_loglevel (console_printk[0])
- #define default_message_loglevel (console_printk[1])
- #define minimum_console_loglevel (console_printk[2])
- #define default_console_loglevel (console_printk[3])
- struct completion;
- struct pt_regs;
- struct user;
- #ifdef CONFIG_PREEMPT_VOLUNTARY
- extern int _cond_resched(void);
- # define might_resched() _cond_resched()
- #else
- # define might_resched() do { } while (0)
- #endif
- #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
- void __might_sleep(char *file, int line);
- /**
- * might_sleep - annotation for functions that can sleep
- *
- * this macro will print a stack trace if it is executed in an atomic
- * context (spinlock, irq-handler, ...).
- *
- * This is a useful debugging help to be able to catch problems early and not
- * be bitten later when the calling function happens to sleep when it is not
- * supposed to.
- */
- # define might_sleep() \
- do { __might_sleep(__FILE__, __LINE__); might_resched(); } while (0)
- #else
- # define might_sleep() do { might_resched(); } while (0)
- #endif
- #define might_sleep_if(cond) do { if (cond) might_sleep(); } while (0)
- #define abs(x) ({ \
- int __x = (x); \
- (__x < 0) ? -__x : __x; \
- })
- #ifdef CONFIG_PROVE_LOCKING
- void might_fault(void);
- #else
- static inline void might_fault(void)
- {
- might_sleep();
- }
- #endif
- extern struct atomic_notifier_head panic_notifier_list;
- extern long (*panic_blink)(long time);
- NORET_TYPE void panic(const char * fmt, ...)
- __attribute__ ((NORET_AND format (printf, 1, 2))) __cold;
- extern void oops_enter(void);
- extern void oops_exit(void);
- extern int oops_may_print(void);
- NORET_TYPE void do_exit(long error_code)
- ATTRIB_NORET;
- NORET_TYPE void complete_and_exit(struct completion *, long)
- ATTRIB_NORET;
- extern unsigned long simple_strtoul(const char *,char **,unsigned int);
- extern long simple_strtol(const char *,char **,unsigned int);
- extern unsigned long long simple_strtoull(const char *,char **,unsigned int);
- extern long long simple_strtoll(const char *,char **,unsigned int);
- extern int strict_strtoul(const char *, unsigned int, unsigned long *);
- extern int strict_strtol(const char *, unsigned int, long *);
- extern int strict_strtoull(const char *, unsigned int, unsigned long long *);
- extern int strict_strtoll(const char *, unsigned int, long long *);
- extern int sprintf(char * buf, const char * fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
- extern int vsprintf(char *buf, const char *, va_list)
- __attribute__ ((format (printf, 2, 0)));
- extern int snprintf(char * buf, size_t size, const char * fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
- extern int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
- __attribute__ ((format (printf, 3, 0)));
- extern int scnprintf(char * buf, size_t size, const char * fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
- extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
- __attribute__ ((format (printf, 3, 0)));
- extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
- extern char *kvasprintf(gfp_t gfp, const char *fmt, va_list args);
- extern int sscanf(const char *, const char *, ...)
- __attribute__ ((format (scanf, 2, 3)));
- extern int vsscanf(const char *, const char *, va_list)
- __attribute__ ((format (scanf, 2, 0)));
- extern int get_option(char **str, int *pint);
- extern char *get_options(const char *str, int nints, int *ints);
- extern unsigned long long memparse(const char *ptr, char **retptr);
- extern int core_kernel_text(unsigned long addr);
- extern int __kernel_text_address(unsigned long addr);
- extern int kernel_text_address(unsigned long addr);
- extern int func_ptr_is_kernel_text(void *ptr);
- struct pid;
- extern struct pid *session_of_pgrp(struct pid *pgrp);
- /*
- * FW_BUG
- * Add this to a message where you are sure the firmware is buggy or behaves
- * really stupid or out of spec. Be aware that the responsible BIOS developer
- * should be able to fix this issue or at least get a concrete idea of the
- * problem by reading your message without the need of looking at the kernel
- * code.
- *
- * Use it for definite and high priority BIOS bugs.
- *
- * FW_WARN
- * Use it for not that clear (e.g. could the kernel messed up things already?)
- * and medium priority BIOS bugs.
- *
- * FW_INFO
- * Use this one if you want to tell the user or vendor about something
- * suspicious, but generally harmless related to the firmware.
- *
- * Use it for information or very low priority BIOS bugs.
- */
- #define FW_BUG "[Firmware Bug]: "
- #define FW_WARN "[Firmware Warn]: "
- #define FW_INFO "[Firmware Info]: "
- #ifdef CONFIG_PRINTK
- asmlinkage int vprintk(const char *fmt, va_list args)
- __attribute__ ((format (printf, 1, 0)));
- asmlinkage int printk(const char * fmt, ...)
- __attribute__ ((format (printf, 1, 2))) __cold;
- extern struct ratelimit_state printk_ratelimit_state;
- extern int printk_ratelimit(void);
- extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
- unsigned int interval_msec);
- /*
- * Print a one-time message (analogous to WARN_ONCE() et al):
- */
- #define printk_once(x...) ({ \
- static int __print_once = 1; \
- \
- if (__print_once) { \
- __print_once = 0; \
- printk(x); \
- } \
- })
- void log_buf_kexec_setup(void);
- #else
- static inline int vprintk(const char *s, va_list args)
- __attribute__ ((format (printf, 1, 0)));
- static inline int vprintk(const char *s, va_list args) { return 0; }
- static inline int printk(const char *s, ...)
- __attribute__ ((format (printf, 1, 2)));
- static inline int __cold printk(const char *s, ...) { return 0; }
- static inline int printk_ratelimit(void) { return 0; }
- static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
- unsigned int interval_msec) \
- { return false; }
- /* No effect, but we still get type checking even in the !PRINTK case: */
- #define printk_once(x...) printk(x)
- static inline void log_buf_kexec_setup(void)
- {
- }
- #endif
- extern int printk_needs_cpu(int cpu);
- extern void printk_tick(void);
- extern void asmlinkage __attribute__((format(printf, 1, 2)))
- early_printk(const char *fmt, ...);
- unsigned long int_sqrt(unsigned long);
- static inline void console_silent(void)
- {
- console_loglevel = 0;
- }
- static inline void console_verbose(void)
- {
- if (console_loglevel)
- console_loglevel = 15;
- }
- extern void bust_spinlocks(int yes);
- extern void wake_up_klogd(void);
- extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
- extern int panic_timeout;
- extern int panic_on_oops;
- extern int panic_on_unrecovered_nmi;
- extern const char *print_tainted(void);
- extern void add_taint(unsigned flag);
- extern int test_taint(unsigned flag);
- extern unsigned long get_taint(void);
- extern int root_mountflags;
- /* Values used for system_state */
- extern enum system_states {
- SYSTEM_BOOTING,
- SYSTEM_RUNNING,
- SYSTEM_HALT,
- SYSTEM_POWER_OFF,
- SYSTEM_RESTART,
- SYSTEM_SUSPEND_DISK,
- } system_state;
- #define TAINT_PROPRIETARY_MODULE 0
- #define TAINT_FORCED_MODULE 1
- #define TAINT_UNSAFE_SMP 2
- #define TAINT_FORCED_RMMOD 3
- #define TAINT_MACHINE_CHECK 4
- #define TAINT_BAD_PAGE 5
- #define TAINT_USER 6
- #define TAINT_DIE 7
- #define TAINT_OVERRIDDEN_ACPI_TABLE 8
- #define TAINT_WARN 9
- #define TAINT_CRAP 10
- extern void dump_stack(void) __cold;
- enum {
- DUMP_PREFIX_NONE,
- DUMP_PREFIX_ADDRESS,
- DUMP_PREFIX_OFFSET
- };
- extern void hex_dump_to_buffer(const void *buf, size_t len,
- int rowsize, int groupsize,
- char *linebuf, size_t linebuflen, bool ascii);
- extern void print_hex_dump(const char *level, const char *prefix_str,
- int prefix_type, int rowsize, int groupsize,
- const void *buf, size_t len, bool ascii);
- extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
- const void *buf, size_t len);
- extern const char hex_asc[];
- #define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
- #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
- static inline char *pack_hex_byte(char *buf, u8 byte)
- {
- *buf++ = hex_asc_hi(byte);
- *buf++ = hex_asc_lo(byte);
- return buf;
- }
- #ifndef pr_fmt
- #define pr_fmt(fmt) fmt
- #endif
- #define pr_emerg(fmt, ...) \
- printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_alert(fmt, ...) \
- printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_crit(fmt, ...) \
- printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_err(fmt, ...) \
- printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_warning(fmt, ...) \
- printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_notice(fmt, ...) \
- printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_info(fmt, ...) \
- printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
- #define pr_cont(fmt, ...) \
- printk(KERN_CONT fmt, ##__VA_ARGS__)
- /* pr_devel() should produce zero code unless DEBUG is defined */
- #ifdef DEBUG
- #define pr_devel(fmt, ...) \
- printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
- #else
- #define pr_devel(fmt, ...) \
- ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
- #endif
- /* If you are writing a driver, please use dev_dbg instead */
- #if defined(DEBUG)
- #define pr_debug(fmt, ...) \
- printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
- #elif defined(CONFIG_DYNAMIC_DEBUG)
- /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
- #define pr_debug(fmt, ...) do { \
- dynamic_pr_debug(fmt, ##__VA_ARGS__); \
- } while (0)
- #else
- #define pr_debug(fmt, ...) \
- ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
- #endif
- /*
- * General tracing related utility functions - trace_printk(),
- * tracing_on/tracing_off and tracing_start()/tracing_stop
- *
- * Use tracing_on/tracing_off when you want to quickly turn on or off
- * tracing. It simply enables or disables the recording of the trace events.
- * This also corresponds to the user space debugfs/tracing/tracing_on
- * file, which gives a means for the kernel and userspace to interact.
- * Place a tracing_off() in the kernel where you want tracing to end.
- * From user space, examine the trace, and then echo 1 > tracing_on
- * to continue tracing.
- *
- * tracing_stop/tracing_start has slightly more overhead. It is used
- * by things like suspend to ram where disabling the recording of the
- * trace is not enough, but tracing must actually stop because things
- * like calling smp_processor_id() may crash the system.
- *
- * Most likely, you want to use tracing_on/tracing_off.
- */
- #ifdef CONFIG_RING_BUFFER
- void tracing_on(void);
- void tracing_off(void);
- /* trace_off_permanent stops recording with no way to bring it back */
- void tracing_off_permanent(void);
- int tracing_is_on(void);
- #else
- static inline void tracing_on(void) { }
- static inline void tracing_off(void) { }
- static inline void tracing_off_permanent(void) { }
- static inline int tracing_is_on(void) { return 0; }
- #endif
- #ifdef CONFIG_TRACING
- extern void tracing_start(void);
- extern void tracing_stop(void);
- extern void ftrace_off_permanent(void);
- extern void
- ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
- static inline void __attribute__ ((format (printf, 1, 2)))
- ____trace_printk_check_format(const char *fmt, ...)
- {
- }
- #define __trace_printk_check_format(fmt, args...) \
- do { \
- if (0) \
- ____trace_printk_check_format(fmt, ##args); \
- } while (0)
- /**
- * trace_printk - printf formatting in the ftrace buffer
- * @fmt: the printf format for printing
- *
- * Note: __trace_printk is an internal function for trace_printk and
- * the @ip is passed in via the trace_printk macro.
- *
- * This function allows a kernel developer to debug fast path sections
- * that printk is not appropriate for. By scattering in various
- * printk like tracing in the code, a developer can quickly see
- * where problems are occurring.
- *
- * This is intended as a debugging tool for the developer only.
- * Please refrain from leaving trace_printks scattered around in
- * your code.
- */
- #define trace_printk(fmt, args...) \
- do { \
- __trace_printk_check_format(fmt, ##args); \
- if (__builtin_constant_p(fmt)) { \
- static const char *trace_printk_fmt \
- __attribute__((section("__trace_printk_fmt"))) = \
- __builtin_constant_p(fmt) ? fmt : NULL; \
- \
- __trace_bprintk(_THIS_IP_, trace_printk_fmt, ##args); \
- } else \
- __trace_printk(_THIS_IP_, fmt, ##args); \
- } while (0)
- extern int
- __trace_bprintk(unsigned long ip, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
- extern int
- __trace_printk(unsigned long ip, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
- /*
- * The double __builtin_constant_p is because gcc will give us an error
- * if we try to allocate the static variable to fmt if it is not a
- * constant. Even with the outer if statement.
- */
- #define ftrace_vprintk(fmt, vargs) \
- do { \
- if (__builtin_constant_p(fmt)) { \
- static const char *trace_printk_fmt \
- __attribute__((section("__trace_printk_fmt"))) = \
- __builtin_constant_p(fmt) ? fmt : NULL; \
- \
- __ftrace_vbprintk(_THIS_IP_, trace_printk_fmt, vargs); \
- } else \
- __ftrace_vprintk(_THIS_IP_, fmt, vargs); \
- } while (0)
- extern int
- __ftrace_vbprintk(unsigned long ip, const char *fmt, va_list ap);
- extern int
- __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap);
- extern void ftrace_dump(void);
- #else
- static inline void
- ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { }
- static inline int
- trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
- static inline void tracing_start(void) { }
- static inline void tracing_stop(void) { }
- static inline void ftrace_off_permanent(void) { }
- static inline int
- trace_printk(const char *fmt, ...)
- {
- return 0;
- }
- static inline int
- ftrace_vprintk(const char *fmt, va_list ap)
- {
- return 0;
- }
- static inline void ftrace_dump(void) { }
- #endif /* CONFIG_TRACING */
- /*
- * Display an IP address in readable format.
- */
- #define NIPQUAD(addr) \
- ((unsigned char *)&addr)[0], \
- ((unsigned char *)&addr)[1], \
- ((unsigned char *)&addr)[2], \
- ((unsigned char *)&addr)[3]
- #define NIPQUAD_FMT "%u.%u.%u.%u"
- /*
- * min()/max()/clamp() macros that also do
- * strict type-checking.. See the
- * "unnecessary" pointer comparison.
- */
- #define min(x, y) ({ \
- typeof(x) _min1 = (x); \
- typeof(y) _min2 = (y); \
- (void) (&_min1 == &_min2); \
- _min1 < _min2 ? _min1 : _min2; })
- #define max(x, y) ({ \
- typeof(x) _max1 = (x); \
- typeof(y) _max2 = (y); \
- (void) (&_max1 == &_max2); \
- _max1 > _max2 ? _max1 : _max2; })
- /**
- * clamp - return a value clamped to a given range with strict typechecking
- * @val: current value
- * @min: minimum allowable value
- * @max: maximum allowable value
- *
- * This macro does strict typechecking of min/max to make sure they are of the
- * same type as val. See the unnecessary pointer comparisons.
- */
- #define clamp(val, min, max) ({ \
- typeof(val) __val = (val); \
- typeof(min) __min = (min); \
- typeof(max) __max = (max); \
- (void) (&__val == &__min); \
- (void) (&__val == &__max); \
- __val = __val < __min ? __min: __val; \
- __val > __max ? __max: __val; })
- /*
- * ..and if you can't take the strict
- * types, you can specify one yourself.
- *
- * Or not use min/max/clamp at all, of course.
- */
- #define min_t(type, x, y) ({ \
- type __min1 = (x); \
- type __min2 = (y); \
- __min1 < __min2 ? __min1: __min2; })
- #define max_t(type, x, y) ({ \
- type __max1 = (x); \
- type __max2 = (y); \
- __max1 > __max2 ? __max1: __max2; })
- /**
- * clamp_t - return a value clamped to a given range using a given type
- * @type: the type of variable to use
- * @val: current value
- * @min: minimum allowable value
- * @max: maximum allowable value
- *
- * This macro does no typechecking and uses temporary variables of type
- * 'type' to make all the comparisons.
- */
- #define clamp_t(type, val, min, max) ({ \
- type __val = (val); \
- type __min = (min); \
- type __max = (max); \
- __val = __val < __min ? __min: __val; \
- __val > __max ? __max: __val; })
- /**
- * clamp_val - return a value clamped to a given range using val's type
- * @val: current value
- * @min: minimum allowable value
- * @max: maximum allowable value
- *
- * This macro does no typechecking and uses temporary variables of whatever
- * type the input argument 'val' is. This is useful when val is an unsigned
- * type and min and max are literals that will otherwise be assigned a signed
- * integer type.
- */
- #define clamp_val(val, min, max) ({ \
- typeof(val) __val = (val); \
- typeof(val) __min = (min); \
- typeof(val) __max = (max); \
- __val = __val < __min ? __min: __val; \
- __val > __max ? __max: __val; })
- /*
- * swap - swap value of @a and @b
- */
- #define swap(a, b) \
- do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
- /**
- * container_of - cast a member of a structure out to the containing structure
- * @ptr: the pointer to the member.
- * @type: the type of the container struct this is embedded in.
- * @member: the name of the member within the struct.
- *
- */
- #define container_of(ptr, type, member) ({ \
- const typeof( ((type *)0)->member ) *__mptr = (ptr); \
- (type *)( (char *)__mptr - offsetof(type,member) );})
- struct sysinfo;
- extern int do_sysinfo(struct sysinfo *info);
- #endif /* __KERNEL__ */
- #define SI_LOAD_SHIFT 16
- struct sysinfo {
- long uptime; /* Seconds since boot */
- unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
- unsigned long totalram; /* Total usable main memory size */
- unsigned long freeram; /* Available memory size */
- unsigned long sharedram; /* Amount of shared memory */
- unsigned long bufferram; /* Memory used by buffers */
- unsigned long totalswap; /* Total swap space size */
- unsigned long freeswap; /* swap space still available */
- unsigned short procs; /* Number of current processes */
- unsigned short pad; /* explicit padding for m68k */
- unsigned long totalhigh; /* Total high memory size */
- unsigned long freehigh; /* Available high memory size */
- unsigned int mem_unit; /* Memory unit size in bytes */
- char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
- };
- /* Force a compilation error if condition is true */
- #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
- /* Force a compilation error if condition is true, but also produce a
- result (of value 0 and type size_t), so the expression can be used
- e.g. in a structure initializer (or where-ever else comma expressions
- aren't permitted). */
- #define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
- /* Trap pasters of __FUNCTION__ at compile-time */
- #define __FUNCTION__ (__func__)
- /* This helps us to avoid #ifdef CONFIG_NUMA */
- #ifdef CONFIG_NUMA
- #define NUMA_BUILD 1
- #else
- #define NUMA_BUILD 0
- #endif
- /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */
- #ifdef CONFIG_FTRACE_MCOUNT_RECORD
- # define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
- #endif
- #endif
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