linux/drivers/ras/ras.c
Borislav Petkov 011d826111 RAS: Add a Corrected Errors Collector
Introduce a simple data structure for collecting correctable errors
along with accessors. More detailed description in the code itself.

The error decoding is done with the decoding chain now and
mce_first_notifier() gets to see the error first and the CEC decides
whether to log it and then the rest of the chain doesn't hear about it -
basically the main reason for the CE collector - or to continue running
the notifiers.

When the CEC hits the action threshold, it will try to soft-offine the
page containing the ECC and then the whole decoding chain gets to see
the error.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20170327093304.10683-5-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-28 08:54:48 +02:00

41 lines
703 B
C

/*
* Copyright (C) 2014 Intel Corporation
*
* Authors:
* Chen, Gong <gong.chen@linux.intel.com>
*/
#include <linux/init.h>
#include <linux/ras.h>
#define CREATE_TRACE_POINTS
#define TRACE_INCLUDE_PATH ../../include/ras
#include <ras/ras_event.h>
static int __init ras_init(void)
{
int rc = 0;
ras_debugfs_init();
rc = ras_add_daemon_trace();
return rc;
}
subsys_initcall(ras_init);
#if defined(CONFIG_ACPI_EXTLOG) || defined(CONFIG_ACPI_EXTLOG_MODULE)
EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
#endif
EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
int __init parse_ras_param(char *str)
{
#ifdef CONFIG_RAS_CEC
parse_cec_param(str);
#endif
return 1;
}
__setup("ras", parse_ras_param);