diff options
| author | John Hawkes <hawkes@sgi.com> | 2004-10-20 18:23:39 +0000 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2004-10-20 18:23:39 +0000 |
| commit | 5c28bdb3bb9956daa32ec8d3ccaab304330032b9 (patch) | |
| tree | d8b372e614a0850d4b77f81081becfe3da8434b1 /include | |
| parent | 230c76230d0ee3696385f53d226ec562ec6c8a6c (diff) | |
[IA64] top level scheduler domain for ia64
Some have noticed that the overlapping sched domains code doesn't quite work
as intended (it results in disjoint domains on some machines), and that a top
level, machine spanning domain is needed. This patch from John Hawkes adds
it to the ia64 code. This allows processes to run on all CPUs in large
systems, though balancing is limited. It should go to Linus soon now
otherwise large systems will only have ~16p (depending on topology) usable by
the scheduler. I sanity checked it on a small system after rediffing John's
original, and he's done some testing on very large systems.
Nick, can you buy off on the sched.c change? Alternatively, do you want to
send that fix separately John? Nick did indeed ACK this change, but it isn't
dependent on this ia64 specific part ... so it's going to be submitted
separately.
Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ia64/topology.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h index 1062f02b088e..5b0dd8cc6bd4 100644 --- a/include/asm-ia64/topology.h +++ b/include/asm-ia64/topology.h @@ -58,7 +58,26 @@ void build_cpu_to_node_map(void); | SD_BALANCE_EXEC \ | SD_WAKE_BALANCE, \ .last_balance = jiffies, \ - .balance_interval = 10, \ + .balance_interval = 1, \ + .nr_balance_failed = 0, \ +} + +/* sched_domains SD_ALLNODES_INIT for IA64 NUMA machines */ +#define SD_ALLNODES_INIT (struct sched_domain) { \ + .span = CPU_MASK_NONE, \ + .parent = NULL, \ + .groups = NULL, \ + .min_interval = 80, \ + .max_interval = 320, \ + .busy_factor = 320, \ + .imbalance_pct = 125, \ + .cache_hot_time = (10*1000000), \ + .cache_nice_tries = 1, \ + .per_cpu_gain = 100, \ + .flags = SD_LOAD_BALANCE \ + | SD_BALANCE_EXEC, \ + .last_balance = jiffies, \ + .balance_interval = 100*(63+num_online_cpus())/64, \ .nr_balance_failed = 0, \ } |