summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorHuang Ying <ying.huang@intel.com>2010-12-07 10:22:31 +0800
committerLen Brown <len.brown@intel.com>2010-12-13 23:42:39 -0500
commit32c361f574f85fa47600d84900598e2efc99082e (patch)
treecb78461432df92afee470b04e8eb20182e8ef28d
parentf59c55d04b43bd72df8efa692dd07224fe94d1ac (diff)
ACPI, APEI, Report GHES error information via printk
printk is one of the methods to report hardware errors to user space. This patch implements hardware error reporting for GHES via printk. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/apei/ghes.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 0d505e59214..51905d07a4d 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -43,6 +43,7 @@
#include <linux/kdebug.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
+#include <linux/ratelimit.h>
#include <acpi/apei.h>
#include <acpi/atomicio.h>
#include <acpi/hed.h>
@@ -255,11 +256,26 @@ static void ghes_do_proc(struct ghes *ghes)
}
#endif
}
+}
- if (!processed && printk_ratelimit())
- pr_warning(GHES_PFX
- "Unknown error record from generic hardware error source: %d\n",
- ghes->generic->header.source_id);
+static void ghes_print_estatus(const char *pfx, struct ghes *ghes)
+{
+ /* Not more than 2 messages every 5 seconds */
+ static DEFINE_RATELIMIT_STATE(ratelimit, 5*HZ, 2);
+
+ if (pfx == NULL) {
+ if (ghes_severity(ghes->estatus->error_severity) <=
+ GHES_SEV_CORRECTED)
+ pfx = KERN_WARNING HW_ERR;
+ else
+ pfx = KERN_ERR HW_ERR;
+ }
+ if (__ratelimit(&ratelimit)) {
+ printk(
+ "%s""Hardware error from APEI Generic Hardware Error Source: %d\n",
+ pfx, ghes->generic->header.source_id);
+ apei_estatus_print(pfx, ghes->estatus);
+ }
}
static int ghes_proc(struct ghes *ghes)
@@ -269,6 +285,7 @@ static int ghes_proc(struct ghes *ghes)
rc = ghes_read_estatus(ghes, 0);
if (rc)
goto out;
+ ghes_print_estatus(NULL, ghes);
ghes_do_proc(ghes);
out: