lkml.org 
[lkml]   [2013]   [Jan]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] powerpc/mm: eliminate unneeded for_each_memblock
Date
The only persistent change made by this loop is calling
memblock_set_node() once for each memblock, which is not useful (and has
no effect) as memblock_set_node() is not called with any
memblock-specific parameters.

Subsistute a single memblock_set_node().
---
arch/powerpc/mm/mem.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 0dba506..50370bb 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -195,13 +195,8 @@ void __init do_init_bootmem(void)
min_low_pfn = MEMORY_START >> PAGE_SHIFT;
boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);

- /* Add active regions with valid PFNs */
- for_each_memblock(memory, reg) {
- unsigned long start_pfn, end_pfn;
- start_pfn = memblock_region_memory_base_pfn(reg);
- end_pfn = memblock_region_memory_end_pfn(reg);
- memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);
- }
+ /* Place all memblock_regions in the same node and merge contiguous memblock_regions */
+ memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);

/* Add all physical memory to the bootmem map, mark each area
* present.
--
1.8.0.3


\
 
 \ /
  Last update: 2013-01-04 20:01    [W:0.037 / U:0.988 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site