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authorBorislav Petkov <bp@suse.de>2017-03-27 12:33:02 +0300
committerIngo Molnar <mingo@kernel.org>2017-03-28 09:54:48 +0300
commit011d8261117249eab97bc86a8e1ac7731e03e319 (patch)
tree5e4a07f4ac44d81b62344ee3c8dadadf1f77cf66 /include/linux/ras.h
parente64edfcce9c738300b4102d0739577d6ecc96d4a (diff)
downloadlinux-011d8261117249eab97bc86a8e1ac7731e03e319.tar.xz
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>
Diffstat (limited to 'include/linux/ras.h')
-rw-r--r--include/linux/ras.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/ras.h b/include/linux/ras.h
index 2aceeafd6fe5..ffb147185e8d 100644
--- a/include/linux/ras.h
+++ b/include/linux/ras.h
@@ -1,14 +1,25 @@
#ifndef __RAS_H__
#define __RAS_H__
+#include <asm/errno.h>
+
#ifdef CONFIG_DEBUG_FS
int ras_userspace_consumers(void);
void ras_debugfs_init(void);
int ras_add_daemon_trace(void);
#else
static inline int ras_userspace_consumers(void) { return 0; }
-static inline void ras_debugfs_init(void) { return; }
+static inline void ras_debugfs_init(void) { }
static inline int ras_add_daemon_trace(void) { return 0; }
#endif
+#ifdef CONFIG_RAS_CEC
+void __init cec_init(void);
+int __init parse_cec_param(char *str);
+int cec_add_elem(u64 pfn);
+#else
+static inline void __init cec_init(void) { }
+static inline int cec_add_elem(u64 pfn) { return -ENODEV; }
#endif
+
+#endif /* __RAS_H__ */