kernel-ark/lib/show_mem.c
David Rientjes 7bf02ea22c arch, mm: filter disallowed nodes from arch specific show_mem functions
Architectures that implement their own show_mem() function did not pass
the filter argument to show_free_areas() to appropriately avoid emitting
the state of nodes that are disallowed in the current context.  This patch
now passes the filter argument to show_free_areas() so those nodes are now
avoided.

This patch also removes the show_free_areas() wrapper around
__show_free_areas() and converts existing callers to pass an empty filter.

ia64 emits additional information for each node, so skip_free_areas_zone()
must be made global to filter disallowed nodes and it is converted to use
a nid argument rather than a zone for this use case.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Helge Deller <deller@gmx.de>
Cc: James Bottomley <jejb@parisc-linux.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25 08:39:03 -07:00

64 lines
1.3 KiB
C

/*
* Generic show_mem() implementation
*
* Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
* All code subject to the GPL version 2.
*/
#include <linux/mm.h>
#include <linux/nmi.h>
#include <linux/quicklist.h>
void show_mem(unsigned int filter)
{
pg_data_t *pgdat;
unsigned long total = 0, reserved = 0, shared = 0,
nonshared = 0, highmem = 0;
printk("Mem-Info:\n");
show_free_areas(filter);
for_each_online_pgdat(pgdat) {
unsigned long i, flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; i++) {
struct page *page;
unsigned long pfn = pgdat->node_start_pfn + i;
if (unlikely(!(i % MAX_ORDER_NR_PAGES)))
touch_nmi_watchdog();
if (!pfn_valid(pfn))
continue;
page = pfn_to_page(pfn);
if (PageHighMem(page))
highmem++;
if (PageReserved(page))
reserved++;
else if (page_count(page) == 1)
nonshared++;
else if (page_count(page) > 1)
shared += page_count(page) - 1;
total++;
}
pgdat_resize_unlock(pgdat, &flags);
}
printk("%lu pages RAM\n", total);
#ifdef CONFIG_HIGHMEM
printk("%lu pages HighMem\n", highmem);
#endif
printk("%lu pages reserved\n", reserved);
printk("%lu pages shared\n", shared);
printk("%lu pages non-shared\n", nonshared);
#ifdef CONFIG_QUICKLIST
printk("%lu pages in pagetable cache\n",
quicklist_total_size());
#endif
}