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-rw-r--r--arch/powerpc/kernel/eeh.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index e1b6d8e17289..3b2252e7731b 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -104,6 +104,13 @@
int eeh_subsystem_flags;
EXPORT_SYMBOL(eeh_subsystem_flags);
+/*
+ * EEH allowed maximal frozen times. If one particular PE's
+ * frozen count in last hour exceeds this limit, the PE will
+ * be forced to be offline permanently.
+ */
+int eeh_max_freezes = 5;
+
/* Platform dependent EEH operations */
struct eeh_ops *eeh_ops = NULL;
@@ -1652,8 +1659,22 @@ static int eeh_enable_dbgfs_get(void *data, u64 *val)
return 0;
}
+static int eeh_freeze_dbgfs_set(void *data, u64 val)
+{
+ eeh_max_freezes = val;
+ return 0;
+}
+
+static int eeh_freeze_dbgfs_get(void *data, u64 *val)
+{
+ *val = eeh_max_freezes;
+ return 0;
+}
+
DEFINE_SIMPLE_ATTRIBUTE(eeh_enable_dbgfs_ops, eeh_enable_dbgfs_get,
eeh_enable_dbgfs_set, "0x%llx\n");
+DEFINE_SIMPLE_ATTRIBUTE(eeh_freeze_dbgfs_ops, eeh_freeze_dbgfs_get,
+ eeh_freeze_dbgfs_set, "0x%llx\n");
#endif
static int __init eeh_init_proc(void)
@@ -1664,6 +1685,9 @@ static int __init eeh_init_proc(void)
debugfs_create_file("eeh_enable", 0600,
powerpc_debugfs_root, NULL,
&eeh_enable_dbgfs_ops);
+ debugfs_create_file("eeh_max_freezes", 0600,
+ powerpc_debugfs_root, NULL,
+ &eeh_freeze_dbgfs_ops);
#endif
}