Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH] x86, mm: Avoid extra pxm_to_node() | Date | Sun, 26 Jan 2014 01:10:15 -0800 |
| |
In slit init code, more pxm_to_node() calling are added.
We can cache return with from_node/to_node to avoid them.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- arch/x86/mm/srat.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
Index: linux-2.6/arch/x86/mm/srat.c =================================================================== --- linux-2.6.orig/arch/x86/mm/srat.c +++ linux-2.6/arch/x86/mm/srat.c @@ -50,14 +50,19 @@ static __init inline int srat_disabled(v void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { int i, j; + int from_node, to_node; for (i = 0; i < slit->locality_count; i++) { - if (pxm_to_node(i) == NUMA_NO_NODE) + from_node = pxm_to_node(i); + if (from_node == NUMA_NO_NODE) continue; + for (j = 0; j < slit->locality_count; j++) { - if (pxm_to_node(j) == NUMA_NO_NODE) + to_node = pxm_to_node(j); + if (to_node == NUMA_NO_NODE) continue; - numa_set_distance(pxm_to_node(i), pxm_to_node(j), + + numa_set_distance(from_node, to_node, slit->entry[slit->locality_count * i + j]); } }
| |