switch (suffix) {
case 'G':
case 'g':

        mem <<= 30;break;
case 'M':
case 'm':mem <<= 20;break;
case 'K':
case 'k':mem <<= 10;/* fall through */
default:break;
}

if (condition) do_this;  /* bad example */

void fun(int a, int b, int c)
{if (condition)printk(KERN_WARNING "Warning this is a long printk with ""3 parameters a: %u b: %u ""c: %u \n", a, b, c);elsenext_statement;
}

int function(int x)
{   /* 这个大括号 { 另起了一行 */body of function
}

if (x is true) {  /* 这个大括号 { 不用另起一行 */we do y
}

if (condition)action();

if (condition) {do_this();do_that();
} else {otherwise();
}

s = sizeof(struct file);    /* good */
s = sizeof( struct file );  /* bad  */

char *linux_banner;
unsigned long long memparse(char *ptr, char **retptr);
char *match_strdup(substring_t *s);

count_active_users()  /* good */
cntusr()              /* cnt  */

int one_func(void)
{return 0;
}int system_is_up(void)
{return system_state == SYSTEM_RUNNING;
}
EXPORT_SYMBOL(system_is_up);

int fun(int a)
{int result = 0;char *buffer = kmalloc(SIZE);if (buffer == NULL)return -ENOMEM;if (condition1) {while (loop1) {...}result = 1;goto out;}...
        out:kfree(buffer);return result;
}

(defun c-lineup-arglist-tabs-only (ignored)"Line up argument lists by tabs, not spaces"(let* ((anchor (c-langelem-pos c-syntactic-element))(column (c-langelem-2nd-pos c-syntactic-element))(offset (- (1+ column) anchor))(steps (floor offset c-basic-offset)))(* (max steps 1)c-basic-offset)))(add-hook 'c-mode-common-hook
          (lambda ();; Add kernel style(c-add-style"linux-tabs-only"'("linux" (c-offsets-alist(arglist-cont-nonemptyc-lineup-gcc-asm-regc-lineup-arglist-tabs-only))))))(add-hook 'c-mode-hook
          (lambda ()(let ((filename (buffer-file-name)));; Enable kernel mode for the appropriate files(when (and filename(string-match (expand-file-name "~/src/linux-trees")filename))(setq indent-tabs-mode t)(c-set-style "linux-tabs-only")))))

config AUDITbool "Auditing support"depends on NEThelpEnable auditing infrastructure that can be used with anotherkernel subsystem, such as SELinux (which requires this forlogging of avc messages output).  Does not do system-callauditing without CONFIG_AUDITSYSCALL.

config SLUBdepends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCTbool "SLUB (Unqueued Allocator)"...

config ADFS_FS_RWbool "ADFS write support (DANGEROUS)"depends on ADFS_FS...

#define CONSTANT 0x12345

#define macrofun(a, b, c)             \do {                    \if (a == 5)            \do_this(b, c);        \} while (0)

#define CONSTANT 0x4000
#define CONSTEXP (CONSTANT | 3)

p = kmalloc(sizeof(*p), ...);

-*- mode: c -*-
or
/*
Local Variables:
compile-command: "gcc -DMAGIC_DEBUG_FLAG foo.c"
End:
*/

/* vim:set sw=8 noet */