From 4481374ce88ba8f460c8b89f2572027bd27057d0 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 21 Sep 2009 17:03:05 -0700 Subject: mm: replace various uses of num_physpages by totalram_pages Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich Acked-by: Rusty Russell Acked-by: Ingo Molnar Cc: Dave Airlie Cc: Kyle McMartin Cc: Jeremy Fitzhardinge Cc: Pekka Enberg Cc: Hugh Dickins Cc: "David S. Miller" Cc: Patrick McHardy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/agp/backend.c | 4 ++-- drivers/parisc/ccio-dma.c | 4 ++-- drivers/parisc/sba_iommu.c | 4 ++-- drivers/xen/balloon.c | 4 ---- 4 files changed, 6 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index ad87753f6de..a56ca080e10 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -114,9 +114,9 @@ static int agp_find_max(void) long memory, index, result; #if PAGE_SHIFT < 20 - memory = num_physpages >> (20 - PAGE_SHIFT); + memory = totalram_pages >> (20 - PAGE_SHIFT); #else - memory = num_physpages << (PAGE_SHIFT - 20); + memory = totalram_pages << (PAGE_SHIFT - 20); #endif index = 1; diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index a45b0c0d574..a6b4a5a53d4 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -1266,7 +1266,7 @@ ccio_ioc_init(struct ioc *ioc) ** Hot-Plug/Removal of PCI cards. (aka PCI OLARD). */ - iova_space_size = (u32) (num_physpages / count_parisc_driver(&ccio_driver)); + iova_space_size = (u32) (totalram_pages / count_parisc_driver(&ccio_driver)); /* limit IOVA space size to 1MB-1GB */ @@ -1305,7 +1305,7 @@ ccio_ioc_init(struct ioc *ioc) DBG_INIT("%s() hpa 0x%p mem %luMB IOV %dMB (%d bits)\n", __func__, ioc->ioc_regs, - (unsigned long) num_physpages >> (20 - PAGE_SHIFT), + (unsigned long) totalram_pages >> (20 - PAGE_SHIFT), iova_space_size>>20, iov_order + PAGE_SHIFT); diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 123d8fe3427..57a6d19eba4 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -1390,7 +1390,7 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ** for DMA hints - ergo only 30 bits max. */ - iova_space_size = (u32) (num_physpages/global_ioc_cnt); + iova_space_size = (u32) (totalram_pages/global_ioc_cnt); /* limit IOVA space size to 1MB-1GB */ if (iova_space_size < (1 << (20 - PAGE_SHIFT))) { @@ -1415,7 +1415,7 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) DBG_INIT("%s() hpa 0x%lx mem %ldMB IOV %dMB (%d bits)\n", __func__, ioc->ioc_hpa, - (unsigned long) num_physpages >> (20 - PAGE_SHIFT), + (unsigned long) totalram_pages >> (20 - PAGE_SHIFT), iova_space_size>>20, iov_order + PAGE_SHIFT); diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index f5bbd9e8341..1b7123eb5d7 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -96,11 +96,7 @@ static struct balloon_stats balloon_stats; /* We increase/decrease in batches which fit in a page */ static unsigned long frame_list[PAGE_SIZE / sizeof(unsigned long)]; -/* VM /proc information for memory */ -extern unsigned long totalram_pages; - #ifdef CONFIG_HIGHMEM -extern unsigned long totalhigh_pages; #define inc_totalhigh_pages() (totalhigh_pages++) #define dec_totalhigh_pages() (totalhigh_pages--) #else -- cgit v1.2.3