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Commit 32c361f5 authored by Huang Ying's avatar Huang Ying Committed by Len Brown
Browse files

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: default avatarHuang Ying <ying.huang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent f59c55d0

drivers/acpi/apei/ghes.c

+21 −4
Original line number Diff line number Diff line
@@ -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: