Messages in this thread Patch in this message | | | Date | Tue, 06 Apr 2004 21:50:08 +0900 (JST) | Subject | [patch 6/6] memory hotplug for hugetlbpages | From | Hirokazu Takahashi <> |
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This is a part 6 of memory hotplug patches for hugetlbpages.
$Id: va-hugepageproc.patch,v 1.7 2004/04/05 06:46:16 iwamoto Exp $
--- linux-2.6.4.ORG/mm/page_alloc.c Thu Apr 1 18:32:34 2032 +++ linux-2.6.4/mm/page_alloc.c Thu Apr 1 18:32:44 2032 @@ -1989,6 +1989,8 @@ int min_free_kbytes_sysctl_handler(ctl_t } #ifdef CONFIG_MEMHOTPLUG +extern int mhtest_hpage_read(char *p, int, int); + static int mhtest_read(char *page, char **start, off_t off, int count, int *eof, void *data) { @@ -2012,9 +2014,15 @@ static int mhtest_read(char *page, char /* skip empty zone */ continue; len = sprintf(p, - "\t%s[%d]: free %ld, active %ld, present %ld\n", + "\t%s[%d]: free %ld, active %ld, present %ld", z->name, NODEZONE(i, j), z->free_pages, z->nr_active, z->present_pages); + p += len; +#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_MEMHOTPLUG) + len = mhtest_hpage_read(p, i, j); + p += len; +#endif + len = sprintf(p, "\n"); p += len; } } --- linux-2.6.4.ORG/arch/i386/mm/hugetlbpage.c Thu Apr 1 18:30:33 2032 +++ linux-2.6.4/arch/i386/mm/hugetlbpage.c Thu Apr 1 18:32:44 2032 @@ -846,6 +846,24 @@ int remap_hugetlb_pages(struct zone *zon } #endif /* CONFIG_MEMHOTPLUG */ +#ifdef CONFIG_MEMHOTPLUG +int mhtest_hpage_read(char *p, int nodenum, int zonenum) +{ + struct page *page; + int total = 0; + int free = 0; + spin_lock(&htlbpage_lock); + list_for_each_entry(page, &hugepage_alllists[nodenum], list) { + if (page_zonenum(page) == zonenum) total++; + } + list_for_each_entry(page, &hugepage_freelists[nodenum], list) { + if (page_zonenum(page) == zonenum) free++; + } + spin_unlock(&htlbpage_lock); + return sprintf(p, " / HugePage free %d, total %d\n", free, total); +} +#endif + int hugetlb_sysctl_handler(ctl_table *table, int write, struct file *file, void *buffer, size_t *length) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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