Signed off by: Milind Dumbare <milind@linsyssoft.com>
include/linux/kgdb.h | 1 +
kernel/kgdb.c | 5 +++++
kernel/softlockup.c | 4 ++++
kernel/timer.c | 9 ++++++++-
4 files changed, 18 insertions(+), 1 deletion(-)
Index: linux-2.6.16/kernel/kgdb.c
===================================================================
--- linux-2.6.16.orig/kernel/kgdb.c 2006-05-23 16:26:54.000000000 +0100
+++ linux-2.6.16/kernel/kgdb.c 2006-05-23 16:58:16.000000000 +0100
@@ -123,6 +123,8 @@ struct debuggerinfo_struct {
/* to keep track of the CPU which is doing the single stepping*/
atomic_t cpu_doing_single_step = ATOMIC_INIT(-1);
+atomic_t kgdb_sync_softlockup[NR_CPUS] = {ATOMIC_INIT(0)};
+
/* reboot notifier block */
static struct notifier_block kgdb_reboot_notifier = {
.notifier_call = kgdb_notify_reboot,
@@ -743,6 +745,7 @@ static void kgdb_wait(struct pt_regs *re
kgdb_info[processor].debuggerinfo = regs;
kgdb_info[processor].task = current;
atomic_set(&procindebug[processor], 1);
+ atomic_set(&kgdb_sync_softlockup[smp_processor_id()], 1);
/* Wait till master processor goes completely into the debugger.
* FIXME: this looks racy */
@@ -1046,6 +1049,8 @@ int kgdb_handle_exception(int ex_vector,
udelay(1);
}
+ atomic_set(&kgdb_sync_softlockup[smp_processor_id()], 1);
+
/*
* Don't enter if the last instance of the exception handler wanted to
* come into the debugger again.
Index: linux-2.6.16/kernel/softlockup.c
===================================================================
--- linux-2.6.16.orig/kernel/softlockup.c 2006-05-23 16:25:22.000000000 +0100
+++ linux-2.6.16/kernel/softlockup.c 2006-05-23 16:59:37.000000000 +0100
@@ -13,6 +13,7 @@
#include <linux/kthread.h>
#include <linux/notifier.h>
#include <linux/module.h>
+#include <linux/kgdb.h>
static DEFINE_SPINLOCK(print_lock);
@@ -37,6 +38,9 @@ static struct notifier_block panic_block
void touch_softlockup_watchdog(void)
{
per_cpu(touch_timestamp, raw_smp_processor_id()) = jiffies;
+#ifdef CONFIG_KGDB
+ atomic_set(&kgdb_sync_softlockup[raw_smp_processor_id()], 0);
+#endif
}
EXPORT_SYMBOL(touch_softlockup_watchdog);
Index: linux-2.6.16/kernel/timer.c
===================================================================
--- linux-2.6.16.orig/kernel/timer.c 2006-05-23 16:25:22.000000000 +0100
+++ linux-2.6.16/kernel/timer.c 2006-05-23 17:02:10.000000000 +0100
@@ -34,6 +34,7 @@
#include <linux/cpu.h>
#include <linux/syscalls.h>
#include <linux/delay.h>
+#include <linux/kgdb.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
Index: linux-2.6.16/include/linux/kgdb.h
===================================================================
--- linux-2.6.16.orig/include/linux/kgdb.h 2006-05-23 16:26:54.000000000 +0100
+++ linux-2.6.16/include/linux/kgdb.h 2006-05-23 16:58:16.000000000 +0100
@@ -41,6 +41,7 @@ extern struct tasklet_struct kgdb_taskle
extern atomic_t kgdb_setting_breakpoint;
extern atomic_t cpu_doing_single_step;
+extern atomic_t kgdb_sync_softlockup[NR_CPUS];
extern struct task_struct *kgdb_usethread, *kgdb_contthread;