diff options
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 8254e8f6db6b..761a669d0b62 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -70,6 +70,17 @@ struct mutex *hugetlb_fault_mutex_table ____cacheline_aligned_in_smp; /* Forward declaration */ static int hugetlb_acct_memory(struct hstate *h, long delta); +static char * __init memfmt(char *buf, unsigned long n) +{ + if (n >= (1UL << 30)) + sprintf(buf, "%lu GB", n >> 30); + else if (n >= (1UL << 20)) + sprintf(buf, "%lu MB", n >> 20); + else + sprintf(buf, "%lu KB", n >> 10); + return buf; +} + static inline void unlock_or_release_subpool(struct hugepage_subpool *spool) { bool free = (spool->count == 0) && (spool->used_hpages == 0); @@ -2212,7 +2223,14 @@ static void __init hugetlb_hstate_alloc_pages(struct hstate *h) &node_states[N_MEMORY])) break; } - h->max_huge_pages = i; + if (i < h->max_huge_pages) { + char buf[32]; + + memfmt(buf, huge_page_size(h)), + pr_warn("HugeTLB: allocating %lu of page size %s failed. Only allocated %lu hugepages.\n", + h->max_huge_pages, buf, i); + h->max_huge_pages = i; + } } static void __init hugetlb_init_hstates(void) @@ -2230,17 +2248,6 @@ static void __init hugetlb_init_hstates(void) VM_BUG_ON(minimum_order == UINT_MAX); } -static char * __init memfmt(char *buf, unsigned long n) -{ - if (n >= (1UL << 30)) - sprintf(buf, "%lu GB", n >> 30); - else if (n >= (1UL << 20)) - sprintf(buf, "%lu MB", n >> 20); - else - sprintf(buf, "%lu KB", n >> 10); - return buf; -} - static void __init report_hugepages(void) { struct hstate *h; @@ -2808,6 +2815,11 @@ static int __init hugetlb_init(void) return 0; if (!size_to_hstate(default_hstate_size)) { + if (default_hstate_size != 0) { + pr_err("HugeTLB: unsupported default_hugepagesz %lu. Reverting to %lu\n", + default_hstate_size, HPAGE_SIZE); + } + default_hstate_size = HPAGE_SIZE; if (!size_to_hstate(default_hstate_size)) hugetlb_add_hstate(HUGETLB_PAGE_ORDER); |