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__show_mem() needs to iterate over all zones that have memory, we can simplify the code by using for_each_populated_zone(). Link: https://lkml.kernel.org/r/20230417035226.4013584-1-yajun.deng@linux.dev Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
38 lines
938 B
C
38 lines
938 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Generic show_mem() implementation
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*
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* Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
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*/
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#include <linux/mm.h>
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#include <linux/cma.h>
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void __show_mem(unsigned int filter, nodemask_t *nodemask, int max_zone_idx)
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{
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unsigned long total = 0, reserved = 0, highmem = 0;
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struct zone *zone;
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printk("Mem-Info:\n");
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__show_free_areas(filter, nodemask, max_zone_idx);
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for_each_populated_zone(zone) {
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total += zone->present_pages;
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reserved += zone->present_pages - zone_managed_pages(zone);
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if (is_highmem(zone))
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highmem += zone->present_pages;
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}
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printk("%lu pages RAM\n", total);
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printk("%lu pages HighMem/MovableOnly\n", highmem);
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printk("%lu pages reserved\n", reserved);
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#ifdef CONFIG_CMA
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printk("%lu pages cma reserved\n", totalcma_pages);
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#endif
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#ifdef CONFIG_MEMORY_FAILURE
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printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
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#endif
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}
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