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| author |   Dave Jones <davej@codemonkey.org.uk> | 2016-01-11 12:04:28 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-01-12 11:08:37 +0100 |
| commit | c9e0d39126af9e338495b719e9d565ca9ebcd4c5 (patch) | |
| tree | ae2556de5071b03e48b9199e342207c9fe625b58 /tools/testing/selftests/x86 | |
| parent | Merge commit 'linus' into x86/urgent, to pick up recent x86 changes (diff) | |
| download | wireguard-linux-c9e0d39126af9e338495b719e9d565ca9ebcd4c5.tar.xz wireguard-linux-c9e0d39126af9e338495b719e9d565ca9ebcd4c5.zip | |
x86/mm/pat: Make split_page_count() check for empty levels to fix /proc/meminfo output
In CONFIG_PAGEALLOC_DEBUG=y builds, we disable 2M pages.
Unfortunatly when we split up mappings during boot,
split_page_count() doesn't take this into account, and
starts decrementing an empty direct_pages_count[] level.
This results in /proc/meminfo showing crazy things like:
DirectMap2M: 18446744073709543424 kB
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/x86')
0 files changed, 0 insertions, 0 deletions