[PATCH -v2 3/3] ACPI, APEI, report GHES error information via printk

Huang Ying
2010-11-30T02:51:41Z

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>
---
drivers/acpi/apei/ghes.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)

--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -255,11 +255,23 @@ static void ghes_do_proc(struct ghes *gh
}
#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)
+{
+ 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 (printk_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 +281,7 @@ 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);