Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [3/18] Convert /proc output code over to report multiple hstates | Date | Mon, 17 Mar 2008 02:58:16 +0100 (CET) |
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I chose to just report the numbers in a row, in the hope to minimze breakage of existing software. The "compat" page size is always the first number.
Signed-off-by: Andi Kleen <ak@suse.de>
--- mm/hugetlb.c | 59 +++++++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 39 insertions(+), 20 deletions(-)
Index: linux/mm/hugetlb.c =================================================================== --- linux.orig/mm/hugetlb.c +++ linux/mm/hugetlb.c @@ -683,37 +683,56 @@ int hugetlb_overcommit_handler(struct ct #endif /* CONFIG_SYSCTL */ +static int dump_field(char *buf, unsigned field) +{ + int n = 0; + struct hstate *h; + for_each_hstate (h) + n += sprintf(buf + n, " %5lu", *(unsigned long *)((char *)h + field)); + buf[n++] = '\n'; + return n; +} + int hugetlb_report_meminfo(char *buf) { - struct hstate *h = &global_hstate; - return sprintf(buf, - "HugePages_Total: %5lu\n" - "HugePages_Free: %5lu\n" - "HugePages_Rsvd: %5lu\n" - "HugePages_Surp: %5lu\n" - "Hugepagesize: %5lu kB\n", - h->nr_huge_pages, - h->free_huge_pages, - h->resv_huge_pages, - h->surplus_huge_pages, - 1UL << (huge_page_order(h) + PAGE_SHIFT - 10)); + struct hstate *h; + int n = 0; + n += sprintf(buf + 0, "HugePages_Total:"); + n += dump_field(buf + n, offsetof(struct hstate, nr_huge_pages)); + n += sprintf(buf + n, "HugePages_Free: "); + n += dump_field(buf + n, offsetof(struct hstate, free_huge_pages)); + n += sprintf(buf + n, "HugePages_Rsvd: "); + n += dump_field(buf + n, offsetof(struct hstate, resv_huge_pages)); + n += sprintf(buf + n, "HugePages_Surp: "); + n += dump_field(buf + n, offsetof(struct hstate, surplus_huge_pages)); + n += sprintf(buf + n, "Hugepagesize: "); + for_each_hstate (h) + n += sprintf(buf + n, " %5u", huge_page_size(h) / 1024); + n += sprintf(buf + n, " kB\n"); + return n; } int hugetlb_report_node_meminfo(int nid, char *buf) { - struct hstate *h = &global_hstate; - return sprintf(buf, - "Node %d HugePages_Total: %5u\n" - "Node %d HugePages_Free: %5u\n", - nid, h->nr_huge_pages_node[nid], - nid, h->free_huge_pages_node[nid]); + int n = 0; + n += sprintf(buf, "Node %d HugePages_Total:", nid); + n += dump_field(buf + n, offsetof(struct hstate, + nr_huge_pages_node[nid])); + n += sprintf(buf + n , "Node %d HugePages_Free: ", nid); + n += dump_field(buf + n, offsetof(struct hstate, + free_huge_pages_node[nid])); + return n; } /* Return the number pages of memory we physically have, in PAGE_SIZE units. */ unsigned long hugetlb_total_pages(void) { - struct hstate *h = &global_hstate; - return h->nr_huge_pages * (1 << huge_page_order(h)); + long x = 0; + struct hstate *h; + for_each_hstate (h) { + x += h->nr_huge_pages * (1 << huge_page_order(h)); + } + return x; } /*
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