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panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')

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This taint flag will initially be used when warning about invalid ACPI
DMAR tables.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Ben Hutchings 2010-04-03 19:36:42 +01:00 committed by David Woodhouse
parent b2be05273a
commit 92946bc72f
3 changed files with 6 additions and 0 deletions
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3
Documentation/oops-tracing.txt
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@ -260,6 +260,9 @@ characters, each representing a particular tainted value.
11: 'C' if a staging driver has been loaded.
12: 'I' if the kernel is working around a severe bug in the platform
firmware (BIOS or similar).
The primary reason for the 'Tainted: ' string is to tell kernel
debuggers if this is a clean kernel or if anything unusual has
occurred. Tainting is permanent: even if an offending module is

1
include/linux/kernel.h
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@ -344,6 +344,7 @@ extern enum system_states {
#define TAINT_OVERRIDDEN_ACPI_TABLE 8
#define TAINT_WARN 9
#define TAINT_CRAP 10
#define TAINT_FIRMWARE_WORKAROUND 11
extern void dump_stack(void) __cold;

2
kernel/panic.c
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@ -178,6 +178,7 @@ static const struct tnt tnts[] = {
{ TAINT_OVERRIDDEN_ACPI_TABLE, 'A', ' ' },
{ TAINT_WARN, 'W', ' ' },
{ TAINT_CRAP, 'C', ' ' },
{ TAINT_FIRMWARE_WORKAROUND, 'I', ' ' },
};
/**
@ -194,6 +195,7 @@ static const struct tnt tnts[] = {
* 'A' - ACPI table overridden.
* 'W' - Taint on warning.
* 'C' - modules from drivers/staging are loaded.
* 'I' - Working around severe firmware bug.
*
* The string is overwritten by the next call to print_tainted().
*/