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authorArjan van de Ven <arjan@linux.intel.com>2008-07-25 01:45:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:29 -0700
commita8f18b909c0a3f22630846207035c8b84bb252b8 (patch)
tree72a2dee787b9d077cc24f5cf7392b071401506ec /kernel/panic.c
parentb6c63937001889af6fe431aaba97e59d04e028e7 (diff)
downloadlinux-a8f18b909c0a3f22630846207035c8b84bb252b8.tar.bz2
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/panic.c')
-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)
add_taint(TAINT_WARN);
}
EXPORT_SYMBOL(warn_on_slowpath);
+
+
+void warn_slowpath(const char *file, int line, const char *fmt, ...)
+{
+ va_list args;
+ char function[KSYM_SYMBOL_LEN];
+ unsigned long caller = (unsigned long)__builtin_return_address(0);
+ sprint_symbol(function, caller);
+
+ printk(KERN_WARNING "------------[ cut here ]------------\n");
+ printk(KERN_WARNING "WARNING: at %s:%d %s()\n", file,
+ line, function);
+ va_start(args, fmt);
+ vprintk(fmt, args);
+ va_end(args);
+
+ print_modules();
+ dump_stack();
+ print_oops_end_marker();
+ add_taint(TAINT_WARN);
+}
+EXPORT_SYMBOL(warn_slowpath);
#endif
#ifdef CONFIG_CC_STACKPROTECTOR