The patch titled
sched_domain-handle-kmalloc-failure-fix
has been removed from the -mm tree. Its filename is
sched_domain-handle-kmalloc-failure-fix.patch
This patch was dropped because it was folded into sched_domain-handle-kmalloc-failure.patch
------------------------------------------------------
Subject: sched_domain-handle-kmalloc-failure-fix
From: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx>
2.6.17-rc1-mm1 hangs during boot on HP rx8620 and dl585 -- both 4 node NUMA
platforms. Problem is in build_sched_domains() setting up the
sched_group_nodes[] lists, resulting from patch:
sched_domain-handle-kmalloc-failure.patch
The referenced patch does not propagate the "next" pointer from the head of
the list, resulting in a loop between the last 2 groups in the list. This
causes a tight loop/hang in init_numa_sched_groups_power() because
'sg->next' never == 'group_head' when you have > 2 nodes.
This patch seems to fix the problem.
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Cc: Srivatsa Vaddagir <vatsa@xxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/sched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/sched.c~sched_domain-handle-kmalloc-failure-fix kernel/sched.c
--- a/kernel/sched.c~sched_domain-handle-kmalloc-failure-fix
+++ a/kernel/sched.c
@@ -6089,7 +6089,7 @@ static int build_sched_domains(const cpu
}
sg->cpu_power = 0;
sg->cpumask = tmp;
- sg->next = prev;
+ sg->next = prev->next;
cpus_or(covered, covered, tmp);
prev->next = sg;
prev = sg;
_
Patches currently in -mm which might be from Lee.Schermerhorn@xxxxxx are
sched_domain-handle-kmalloc-failure.patch
sched_domain-handle-kmalloc-failure-fix.patch
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