From: Johannes Weiner <hannes@cmpxchg.org>
To: x86@kernel.org, Andrew Morton <akpm@linux-foundation.org>
Cc: Ben Hutchings <ben@decadent.org.uk>,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [patch 0/5] sparse-vmemmap: hotplug fixes & cleanups
Date: Wed, 20 Mar 2013 14:03:27 -0400 [thread overview]
Message-ID: <1363802612-32127-1-git-send-email-hannes@cmpxchg.org> (raw)
Hotplug can happen at times when the memory situation is less than
perfect to allocate huge pages for the vmemmap. This series makes the
allocation try harder in patch #1. The remaining patches allow x86-64
to fall back to regular pages as a last resort before the hotplug
event fails completely. As a prerequisite to this, the arch interface
to sparse is cleaned up a little, which should also enable other
architectures to easily mix huge and regular pages in the vmemmap.
arch/arm64/mm/mmu.c | 13 +++++--------
arch/ia64/mm/discontig.c | 7 +++----
arch/powerpc/mm/init_64.c | 11 +++--------
arch/s390/mm/vmem.c | 13 +++++--------
arch/sparc/mm/init_64.c | 7 +++----
arch/x86/mm/init_64.c | 68 ++++++++++++++++++++++++++++++++------------------------------------
include/linux/mm.h | 8 ++++----
mm/sparse-vmemmap.c | 27 +++++++++++++++++----------
mm/sparse.c | 10 ++++++++--
9 files changed, 80 insertions(+), 84 deletions(-)
next reply other threads:[~2013-03-20 18:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-20 18:03 Johannes Weiner [this message]
2013-03-20 18:03 ` [patch 1/5] mm: Try harder to allocate vmemmap blocks Johannes Weiner
2013-03-20 18:03 ` Johannes Weiner
2013-03-20 18:03 ` [patch 2/5] sparse-vmemmap: specify vmemmap population range in bytes Johannes Weiner
2013-03-20 18:03 ` Johannes Weiner
2013-03-20 18:43 ` David Miller
2013-03-20 18:03 ` [patch 3/5] x86-64: remove dead debugging code for !pse setups Johannes Weiner
2013-03-20 18:03 ` Johannes Weiner
2013-03-20 18:03 ` [patch 4/5] x86-64: use vmemmap_populate_basepages() " Johannes Weiner
2013-03-20 18:03 ` Johannes Weiner
2013-03-20 18:03 ` [patch 5/5] x86-64: fall back to regular page vmemmap on allocation failure Johannes Weiner
2013-03-20 18:03 ` Johannes Weiner
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