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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2016-05-25 01:35:35 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-05-30 15:27:07 +0300 |
| commit | 6525afdf53b39968f1a109b1ce1607ca6c98d300 (patch) | |
| tree | 5ab5e037f2b2e9bd666c12107b136911eb30dd9e /drivers | |
| parent | 312521d0543513f37f0badb4efc7bfed2d99672e (diff) | |
| download | linux-6525afdf53b39968f1a109b1ce1607ca6c98d300.tar.xz | |
ACPI / NUMA: move acpi_numa_slit_init() to drivers/acpi/numa.c
Identical implementations of acpi_numa_slit_init() are used by both
x86 and follow-on arm64 support. Move it to drivers/acpi/numa.c, and
guard with CONFIG_X86 || CONFIG_ARM64 because ia64 has its own
architecture specific implementation.
No code change.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/numa.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index fb2c0d61f252..7e0649d11da2 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -197,6 +197,35 @@ static int __init slit_valid(struct acpi_table_slit *slit) return 1; } +#if defined(CONFIG_X86) || defined(CONFIG_ARM64) +/* + * Callback for SLIT parsing. pxm_to_node() returns NUMA_NO_NODE for + * I/O localities since SRAT does not list them. I/O localities are + * not supported at this point. + */ +void __init acpi_numa_slit_init(struct acpi_table_slit *slit) +{ + int i, j; + + for (i = 0; i < slit->locality_count; i++) { + const int from_node = pxm_to_node(i); + + if (from_node == NUMA_NO_NODE) + continue; + + for (j = 0; j < slit->locality_count; j++) { + const int to_node = pxm_to_node(j); + + if (to_node == NUMA_NO_NODE) + continue; + + numa_set_distance(from_node, to_node, + slit->entry[slit->locality_count * i + j]); + } + } +} +#endif /* defined(CONFIG_X86) || defined (CONFIG_ARM64) */ + static int __init acpi_parse_slit(struct acpi_table_header *table) { struct acpi_table_slit *slit = (struct acpi_table_slit *)table; |