Add Debian linux 3.2 config, Gerrit's linux kernel regression patches

git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@4362 6dcd42c9-f523-4c6d-aada-af552506706e

patches/enlighten-3.0.79-revert.patch

+diff --git b/arch/x86/xen/enlighten.c a/arch/x86/xen/enlighten.c
+index e11efbd..063ce1f 100644
+--- b/arch/x86/xen/enlighten.c
++++ a/arch/x86/xen/enlighten.c
+@@ -129,21 +129,6 @@ static void xen_vcpu_setup(int cpu)
+ 
+ 	BUG_ON(HYPERVISOR_shared_info == &xen_dummy_shared_info);
+ 
+-	/*
+-	 * This path is called twice on PVHVM - first during bootup via
+-	 * smp_init -> xen_hvm_cpu_notify, and then if the VCPU is being
+-	 * hotplugged: cpu_up -> xen_hvm_cpu_notify.
+-	 * As we can only do the VCPUOP_register_vcpu_info once lets
+-	 * not over-write its result.
+-	 *
+-	 * For PV it is called during restore (xen_vcpu_restore) and bootup
+-	 * (xen_setup_vcpu_info_placement). The hotplug mechanism does not
+-	 * use this function.
+-	 */
+-	if (xen_hvm_domain()) {
+-		if (per_cpu(xen_vcpu, cpu) == &per_cpu(xen_vcpu_info, cpu))
+-			return;
+-	}
+ 	if (cpu < MAX_VIRT_CPUS)
+ 		per_cpu(xen_vcpu,cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
+ 

patches/kmod-3.0.79-revert.patch

+diff --git b/kernel/kmod.c a/kernel/kmod.c
+index f625b4f..fabfe54 100644
+--- b/kernel/kmod.c
++++ a/kernel/kmod.c
+@@ -421,11 +421,6 @@ int call_usermodehelper_exec(struct subprocess_info *sub_info,
+ 	int retval = 0;
+ 
+ 	helper_lock();
+-	if (!sub_info->path) {
+-		retval = -EINVAL;
+-		goto out;
+-	}
+-
+ 	if (sub_info->path[0] == '\0')
+ 		goto out;
+ 

patches/printk-3.0.66-revert.patch

+diff --git b/include/linux/syslog.h a/include/linux/syslog.h
+index ce4c665..3891139 100644
+--- b/include/linux/syslog.h
++++ a/include/linux/syslog.h
+@@ -47,12 +47,6 @@
+ #define SYSLOG_FROM_CALL 0
+ #define SYSLOG_FROM_FILE 1
+ 
+-/*
+- * Syslog priority (PRI) maximum length in char : '<[0-9]{1,3}>'
+- * See RFC5424 for details
+-*/
+-#define SYSLOG_PRI_MAX_LENGTH 5
+-
+ int do_syslog(int type, char __user *buf, int count, bool from_file);
+ 
+ #endif /* _LINUX_SYSLOG_H */
+diff --git b/kernel/printk.c a/kernel/printk.c
+index 6edc4e89..3fc4708 100644
+--- b/kernel/printk.c
++++ a/kernel/printk.c
+@@ -633,19 +633,8 @@ static void call_console_drivers(unsigned start, unsigned end)
+ 	start_print = start;
+ 	while (cur_index != end) {
+ 		if (msg_level < 0 && ((end - cur_index) > 2)) {
+-			/*
+-			 * prepare buf_prefix, as a contiguous array,
+-			 * to be processed by log_prefix function
+-			 */
+-			char buf_prefix[SYSLOG_PRI_MAX_LENGTH+1];
+-			unsigned i;
+-			for (i = 0; i < ((end - cur_index)) && (i < SYSLOG_PRI_MAX_LENGTH); i++) {
+-				buf_prefix[i] = LOG_BUF(cur_index + i);
+-			}
+-			buf_prefix[i] = '\0'; /* force '\0' as last string character */
+-
+ 			/* strip log prefix */
+-			cur_index += log_prefix((const char *)&buf_prefix, &msg_level, NULL);
++			cur_index += log_prefix(&LOG_BUF(cur_index), &msg_level, NULL);
+ 			start_print = cur_index;
+ 		}
+ 		while (cur_index != end) {

patches/tick-sched-3.0.79-revert.patch

+diff --git b/kernel/time/tick-sched.c a/kernel/time/tick-sched.c
+index c0be5f26ec76..c473ce246cb7 100644
+--- b/kernel/time/tick-sched.c
++++ a/kernel/time/tick-sched.c
+@@ -811,7 +811,7 @@ void tick_cancel_sched_timer(int cpu)
+ 		hrtimer_cancel(&ts->sched_timer);
+ # endif
+ 
+-	memset(ts, 0, sizeof(*ts));
++	ts->nohz_mode = NOHZ_MODE_INACTIVE;
+ }
+ #endif
+ 

patches/timer-3.0.79-revert.patch

+diff --git b/kernel/timer.c a/kernel/timer.c
+index 45a2f29..27982d9 100644
+--- b/kernel/timer.c
++++ a/kernel/timer.c
+@@ -1630,12 +1630,12 @@ static int __cpuinit init_timers_cpu(int cpu)
+ 			boot_done = 1;
+ 			base = &boot_tvec_bases;
+ 		}
+-		spin_lock_init(&base->lock);
+ 		tvec_base_done[cpu] = 1;
+ 	} else {
+ 		base = per_cpu(tvec_bases, cpu);
+ 	}
+ 
++	spin_lock_init(&base->lock);
+ 
+ 	for (j = 0; j < TVN_SIZE; j++) {
+ 		INIT_LIST_HEAD(base->tv5.vec + j);