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authorArjan van de Ven <arjan@linux.intel.com>2008-07-25 04:45:53 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 13:53:29 -0400
commita8f18b909c0a3f22630846207035c8b84bb252b8 (patch)
tree72a2dee787b9d077cc24f5cf7392b071401506ec /kernel
parentb6c63937001889af6fe431aaba97e59d04e028e7 (diff)
Add a WARN() macro; this is WARN_ON() + printk arguments
Add a WARN() macro that acts like WARN_ON(), with the added feature that it takes a printk like argument that is printed as part of the warning message. [akpm@linux-foundation.org: fix printk arguments] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Greg KH <greg@kroah.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/panic.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index 425567f45b9f..12c5a0a6c89b 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -318,6 +318,28 @@ void warn_on_slowpath(const char *file, int line)
318 add_taint(TAINT_WARN); 318 add_taint(TAINT_WARN);
319} 319}
320EXPORT_SYMBOL(warn_on_slowpath); 320EXPORT_SYMBOL(warn_on_slowpath);
321
322
323void warn_slowpath(const char *file, int line, const char *fmt, ...)
324{
325 va_list args;
326 char function[KSYM_SYMBOL_LEN];
327 unsigned long caller = (unsigned long)__builtin_return_address(0);
328 sprint_symbol(function, caller);
329
330 printk(KERN_WARNING "------------[ cut here ]------------\n");
331 printk(KERN_WARNING "WARNING: at %s:%d %s()\n", file,
332 line, function);
333 va_start(args, fmt);
334 vprintk(fmt, args);
335 va_end(args);
336
337 print_modules();
338 dump_stack();
339 print_oops_end_marker();
340 add_taint(TAINT_WARN);
341}
342EXPORT_SYMBOL(warn_slowpath);
321#endif 343#endif
322 344
323#ifdef CONFIG_CC_STACKPROTECTOR 345#ifdef CONFIG_CC_STACKPROTECTOR