The following patchset is to allocate node local memory for the x86_64
processor PDA.
Andrew, can you pls include this in -mm for testing?
Thanks,
Kiran
---
Patch enables early initialization of cpu_to_node. apicid_to_node is built by
reading the SRAT table, from acpi_numa_init, and x86_cpu_to_apicid is built
by parsing the ACPI MADT table, from acpi_boot_init. Combine these two tables
and setup cpu_to_node. Thanks to Andi for suggesting this.
Early initialization helps the static per-cpu areas in getting pages from
correct node, and sets up cpu_to_node early for node local PDA allocations.
Signed-off-by: Alok N Kataria <[email protected]>
Signed-off-by: Ravikiran Thirumalai <[email protected]>
Index: linux-2.6.15-rc3/arch/x86_64/kernel/setup.c
===================================================================
--- linux-2.6.15-rc3.orig/arch/x86_64/kernel/setup.c 2005-11-30 11:32:53.000000000 -0800
+++ linux-2.6.15-rc3/arch/x86_64/kernel/setup.c 2005-11-30 16:49:19.000000000 -0800
@@ -528,6 +528,7 @@
void __init setup_arch(char **cmdline_p)
{
unsigned long kernel_end;
+ unsigned i;
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
drive_info = DRIVE_INFO;
@@ -669,6 +670,15 @@
acpi_boot_init();
#endif
+#ifdef CONFIG_ACPI_NUMA
+ /*
+ * Setup cpu_to_node using the SRAT lapcis & ACPI MADT table
+ * info.
+ */
+ for (i = 0; i < NR_CPUS; i++)
+ cpu_to_node[i] = apicid_to_node[x86_cpu_to_apicid[i]];
+#endif
+
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
@@ -687,12 +697,9 @@
request_resource(&iomem_resource, &video_ram_resource);
- {
- unsigned i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
- }
e820_setup_gap();
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
