Create /proc/sys/kernel/mca_recovery to turn on/off the MCA recovery code.
This allows the recovery code to be enabled or disabled without having
to reboot.
1 indicates MCA recovery is on.
0 indicates MCA recovery is off.
Signed-off-by: Russ Anderson <[EMAIL PROTECTED]>
------------------------------------------------------------------------------------
Index: linux/arch/ia64/kernel/mca.c
===================================================================
--- linux.orig/arch/ia64/kernel/mca.c 2005-04-01 09:31:54.106157562 -0600
+++ linux/arch/ia64/kernel/mca.c 2005-04-05 17:29:19.933493325 -0500
@@ -123,6 +123,8 @@
*/
static int cpe_poll_enabled = 1;
+int mca_recovery = 1;
+
extern void salinfo_log_wakeup(int type, u8 *buffer, u64 size, int irqsafe);
static int mca_init;
@@ -884,6 +886,7 @@
recover = (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc))
/* other error recovery */
|| (ia64_mca_ucmc_extension
+ && mca_recovery
&& ia64_mca_ucmc_extension(
IA64_LOG_CURR_BUFFER(SAL_INFO_TYPE_MCA),
&ia64_sal_to_os_handoff_state,
Index: linux/kernel/sysctl.c
===================================================================
--- linux.orig/kernel/sysctl.c 2005-04-01 09:34:11.198549062 -0600
+++ linux/kernel/sysctl.c 2005-04-05 18:10:18.987566865 -0500
@@ -121,6 +121,8 @@
extern int acct_parm[];
#endif
+extern int mca_recovery;
+
int randomize_va_space = 1;
static int parse_table(int __user *, int, void __user *, size_t __user *, void
__user *, size_t,
@@ -642,7 +644,14 @@
.mode = 0644,
.proc_handler = &proc_dointvec,
},
-
+ {
+ .ctl_name = KERN_MCA_RECOVERY,
+ .procname = "mca_recovery",
+ .data = &mca_recovery,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{ .ctl_name = 0 }
};
Index: linux/include/linux/sysctl.h
===================================================================
--- linux.orig/include/linux/sysctl.h 2005-04-01 09:34:05.593135721 -0600
+++ linux/include/linux/sysctl.h 2005-04-05 16:56:24.819728010 -0500
@@ -136,6 +136,7 @@
KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
KERN_RANDOMIZE=68, /* int: randomize virtual address space */
+ KERN_MCA_RECOVERY=69, /* Turn on/off MCA recovery code */
};
------------------------------------------------------------------------------------
--
Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc [EMAIL PROTECTED]
-
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