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| author | holt@sgi.com <holt@sgi.com> | 2008-04-03 22:17:13 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-04-08 22:51:35 +0200 |
| commit | 2c6e6db41f01b6b4eb98809350827c9678996698 (patch) | |
| tree | 00438344c0ad599c1301db2abe32a4c2ee89b607 /arch/ia64/kernel/setup.c | |
| parent | [IA64] Correct pernodesize calculation. (diff) | |
| download | linux-2c6e6db41f01b6b4eb98809350827c9678996698.tar.xz linux-2c6e6db41f01b6b4eb98809350827c9678996698.zip | |
[IA64] Minimize per_cpu reservations.
This attached patch significantly shrinks boot memory allocation on ia64.
It does this by not allocating per_cpu areas for cpus that can never
exist.
In the case where acpi does not have any numa node description of the
cpus, I defaulted to assigning the first 32 round-robin on the known
nodes.. For the !CONFIG_ACPI I used for_each_possible_cpu().
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/setup.c')
| -rw-r--r-- | arch/ia64/kernel/setup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 4aa9eaea76c3..6206541f9e87 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -493,6 +493,8 @@ setup_arch (char **cmdline_p) acpi_table_init(); # ifdef CONFIG_ACPI_NUMA acpi_numa_init(); + per_cpu_scan_finalize((cpus_weight(early_cpu_possible_map) == 0 ? + 32 : cpus_weight(early_cpu_possible_map)), additional_cpus); # endif #else # ifdef CONFIG_SMP |