The patch titled
Cpuset: remove useless sched domain line
has been added to the -mm tree. Its filename is
cpuset-remove-useless-sched-domain-line.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Cpuset: remove useless sched domain line
From: Paul Jackson <pj@xxxxxxx>
Remove a useless line from the sched domain setup code in cpusets.
When I removed the 'is_removed()' flag test from the sched domain setup
code in cpusets, as part of my July 23, 2006 patch:
Cpuset: fix ABBA deadlock with cpu hotplug lock
I failed to notice that this opened the door to a little bit of code
simplification. A line of code that had to cover for the possibility that
a cpuset marked cpu_exclusive was marked for removal could be eliminated.
In the code section visible in this patch, it is now the case that
cur->cpus_allowed is always a subset of pspan, so it is always a no-op to
cpus_or() cur->cpus_allowed into pspan.
Signed-off-by: Paul Jackson <pj@xxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/cpuset.c | 1 -
1 files changed, 1 deletion(-)
diff -puN kernel/cpuset.c~cpuset-remove-useless-sched-domain-line kernel/cpuset.c
--- a/kernel/cpuset.c~cpuset-remove-useless-sched-domain-line
+++ a/kernel/cpuset.c
@@ -783,7 +783,6 @@ static void update_cpu_domains(struct cp
cpus_andnot(pspan, pspan, c->cpus_allowed);
}
if (!is_cpu_exclusive(cur)) {
- cpus_or(pspan, pspan, cur->cpus_allowed);
if (cpus_equal(pspan, cur->cpus_allowed))
return;
cspan = CPU_MASK_NONE;
_
Patches currently in -mm which might be from pj@xxxxxxx are
lib-cpumaskc-should-include-nodemaskh.patch
memory-page-alloc-minor-cleanups.patch
memory-page-alloc-minor-cleanups-fix.patch
memory-page_alloc-zonelist-caching-speedup.patch
memory-page_alloc-zonelist-caching-speedup-speedup.patch
cpuset-remove-useless-sched-domain-line.patch
-
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