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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-06-17 08:32:26 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-17 08:32:26 -0600 |
| commit | f8db4cc4f2b11bdded6c94f0d55906847474b982 (patch) | |
| tree | d1b99d186edb9d203fafd896f19487125a2395af /arch/powerpc/mm/mem.c | |
| parent | 2e2de2e314672c8b6644f67a35556d6df780493d (diff) | |
| parent | e479c60456ef22b0869432887216186aabaed086 (diff) | |
| download | lwn-f8db4cc4f2b11bdded6c94f0d55906847474b982.tar.gz lwn-f8db4cc4f2b11bdded6c94f0d55906847474b982.zip | |
Merge branch 'spi/merge' into spi/next
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 57e545b84bf1..29d4dde65c45 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -382,6 +382,25 @@ void __init mem_init(void) mem_init_done = 1; } +#ifdef CONFIG_BLK_DEV_INITRD +void __init free_initrd_mem(unsigned long start, unsigned long end) +{ + if (start >= end) + return; + + start = _ALIGN_DOWN(start, PAGE_SIZE); + end = _ALIGN_UP(end, PAGE_SIZE); + pr_info("Freeing initrd memory: %ldk freed\n", (end - start) >> 10); + + for (; start < end; start += PAGE_SIZE) { + ClearPageReserved(virt_to_page(start)); + init_page_count(virt_to_page(start)); + free_page(start); + totalram_pages++; + } +} +#endif + /* * This is called when a page has been modified by the kernel. * It just marks the page as not i-cache clean. We do the i-cache |