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| author | Arjan van de Ven <arjan@linux.intel.com> | 2008-11-28 08:36:09 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-28 17:52:50 +0100 |
| commit | bd89bb29a01503c5cffa367eccb0b356f910cb8d (patch) | |
| tree | 2066bb0cff4321261cedcddc00e8613eb9e1b538 /kernel/panic.c | |
| parent | 74853dba2f7a1a9b0905a09abcf65c1f3ce0b14f (diff) | |
| download | lwn-bd89bb29a01503c5cffa367eccb0b356f910cb8d.tar.gz lwn-bd89bb29a01503c5cffa367eccb0b356f910cb8d.zip | |
debug warnings: print the DMI board info name in a WARN/WARN_ON
Impact: extend WARN_ON() output with DMI_PRODUCT_NAME
It's very useful for many low level WARN_ON's to find out which
motherboard has the broken BIOS etc... this patch adds a printk
to the WARN_ON code for this.
On architectures without DMI, gcc should optimize the code out.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index 6bbf7b905c76..73d365199c3f 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -21,6 +21,7 @@ #include <linux/debug_locks.h> #include <linux/random.h> #include <linux/kallsyms.h> +#include <linux/dmi.h> int panic_on_oops; static unsigned long tainted_mask; @@ -325,11 +326,16 @@ 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); + const char *board; + sprint_symbol(function, caller); printk(KERN_WARNING "------------[ cut here ]------------\n"); printk(KERN_WARNING "WARNING: at %s:%d %s()\n", file, line, function); + board = dmi_get_system_info(DMI_PRODUCT_NAME); + if (board) + printk(KERN_WARNING "Hardware name: %s\n", board); if (fmt) { va_start(args, fmt); |