Add a new tain flag that indicates wheather the user has loaded ACPI
SSDT overlays. This will provide a clean indication in bug reports that
the user has added new information to the ACPI tables.
Signed-off-by: Octavian Purdila <octavian.purdila@xxxxxxxxx>
---
Documentation/oops-tracing.txt | 2 ++
Documentation/sysctl/kernel.txt | 1 +
include/linux/kernel.h | 1 +
kernel/panic.c | 2 ++
4 files changed, 6 insertions(+)
diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index f3ac05c..40e1117 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -272,6 +272,8 @@ characters, each representing a particular tainted value.
16: 'K' if the kernel has been live patched.
+ 17: 'N' if ACPI SSDT overlays have been loaded.
+
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
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index a93b414..547173e 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -895,6 +895,7 @@ can be ORed together:
signature.
16384 - A soft lockup has previously occurred on the system.
32768 - The kernel has been live patched.
+65536 - ACPI SSDT overlays have been loaded.
==============================================================
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index f31638c..18ff9c7 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -519,6 +519,7 @@ extern enum system_states {
#define TAINT_UNSIGNED_MODULE 13
#define TAINT_SOFTLOCKUP 14
#define TAINT_LIVEPATCH 15
+#define TAINT_OVERLAY_ACPI_TABLE 16
extern const char hex_asc[];
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
diff --git a/kernel/panic.c b/kernel/panic.c
index d96469d..bf4b6d0 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -263,6 +263,7 @@ static const struct tnt tnts[] = {
{ TAINT_UNSIGNED_MODULE, 'E', ' ' },
{ TAINT_SOFTLOCKUP, 'L', ' ' },
{ TAINT_LIVEPATCH, 'K', ' ' },
+ { TAINT_OVERLAY_ACPI_TABLE, 'N', ' ' },
};
/**
@@ -284,6 +285,7 @@ static const struct tnt tnts[] = {
* 'E' - Unsigned module has been loaded.
* 'L' - A soft lockup has previously occurred.
* 'K' - Kernel has been live patched.
+ * 'N' - ACPI SSDT overlays have been loaded.
*
* The string is overwritten by the next call to print_tainted().
*/
--
1.9.1
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