[git pull] scheduler + debugging updates

From: Ingo Molnar
Date: Thu Dec 20 2007 - 09:36:40 EST



Linus, please pull this scheduler+debugging git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git

These patches successfully passed a couple of hundred 32-bit and 64-bit
x86 random kernel builds and bootups. (The debug patch is fine IMO -
i'll redo this push if it's questionable.)

Thanks!

Ingo

------------------>
Arjan van de Ven (1):
debug: add end-of-oops marker

Peter Zijlstra (1):
sched: rt: account the cpu time during the tick

panic.c | 18 ++++++++++++++++++
sched_rt.c | 2 ++
2 files changed, 20 insertions(+)

diff --git a/kernel/panic.c b/kernel/panic.c
index 6f6e03e..da4d6ba 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -19,6 +19,7 @@
#include <linux/nmi.h>
#include <linux/kexec.h>
#include <linux/debug_locks.h>
+#include <linux/random.h>

int panic_on_oops;
int tainted;
@@ -266,12 +267,29 @@ void oops_enter(void)
}

/*
+ * 64-bit random ID for oopses:
+ */
+static u64 oops_id;
+
+static int init_oops_id(void)
+{
+ if (!oops_id)
+ get_random_bytes(&oops_id, sizeof(oops_id));
+
+ return 0;
+}
+late_initcall(init_oops_id);
+
+/*
* Called when the architecture exits its oops handler, after printing
* everything.
*/
void oops_exit(void)
{
do_oops_enter_exit();
+ init_oops_id();
+ printk(KERN_WARNING "---[ end trace %016llx ]---\n",
+ (unsigned long long)oops_id);
}

#ifdef CONFIG_CC_STACKPROTECTOR
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index ee9c8b6..9ba3daa 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -208,6 +208,8 @@ move_one_task_rt(struct rq *this_rq, int this_cpu, struct rq *busiest,

static void task_tick_rt(struct rq *rq, struct task_struct *p)
{
+ update_curr_rt(rq);
+
/*
* RR tasks need a special form of timeslice management.
* FIFO tasks have no timeslices.
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