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| author | Con Kolivas <kernel@kolivas.org> | 2007-03-05 00:30:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-05 07:57:51 -0800 |
| commit | 69f7c0a1be84b10a81b6edcce2dbee0cdec26eba (patch) | |
| tree | a6d4988fda72595ea71ba7e2b4ac11f91fde0159 /include/asm-mips | |
| parent | 759b9775c25f5e69aaea8a75c3914019e2dc5539 (diff) | |
| download | linux-3.10-69f7c0a1be84b10a81b6edcce2dbee0cdec26eba.tar.gz linux-3.10-69f7c0a1be84b10a81b6edcce2dbee0cdec26eba.tar.bz2 linux-3.10-69f7c0a1be84b10a81b6edcce2dbee0cdec26eba.zip | |
[PATCH] sched: remove SMT nice
Remove the SMT-nice feature which idles sibling cpus on SMT cpus to
facilitiate nice working properly where cpu power is shared. The idling of
cpus in the presence of runnable tasks is considered too fragile, easy to
break with outside code, and the complexity of managing this system if an
architecture comes along with many logical cores sharing cpu power will be
unworkable.
Remove the associated per_cpu_gain variable in sched_domains used only by
this code.
Also:
The reason is that with dynticks enabled, this code breaks without yet
further tweaks so dynticks brought on the rapid demise of this code. So
either we tweak this code or kill it off entirely. It was Ingo's preference
to kill it off. Either way this needs to happen for 2.6.21 since dynticks
has gone in.
Signed-off-by: Con Kolivas <kernel@kolivas.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-mips')
| -rw-r--r-- | include/asm-mips/mach-ip27/topology.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/asm-mips/mach-ip27/topology.h b/include/asm-mips/mach-ip27/topology.h index 44790fdc5d0..61d9be3f317 100644 --- a/include/asm-mips/mach-ip27/topology.h +++ b/include/asm-mips/mach-ip27/topology.h @@ -28,7 +28,6 @@ extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES]; .busy_factor = 32, \ .imbalance_pct = 125, \ .cache_nice_tries = 1, \ - .per_cpu_gain = 100, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_EXEC \ | SD_WAKE_BALANCE, \ |