linux-toradex.git/arch/hexagon/mm, branch v3.10.94

arch: mm: pass userspace fault flag to generic fault handler

2014-11-21T17:22:56+00:00

commit 759496ba6407c6994d6a5ce3a5e74937d7816208 upstream.

Unlike global OOM handling, memory cgroup code will invoke the OOM killer
in any OOM situation because it has no way of telling faults occuring in
kernel context - which could be handled more gracefully - from
user-triggered faults.

Pass a flag that identifies faults originating in user space from the
architecture-specific fault handlers to generic code so that memcg OOM
handling can be improved.

Signed-off-by: Johannes Weiner 
Reviewed-by: Michal Hocko 
Cc: David Rientjes 
Cc: KAMEZAWA Hiroyuki 
Cc: azurIt 
Cc: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Cong Wang 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

Hexagon: fix signal number for user mem faults

2013-05-01T00:40:27+00:00

Signed-off-by: Richard Kuo

Hexagon: update copyright dates

2013-05-01T00:40:27+00:00

Signed-off-by: Richard Kuo

Hexagon: add support for ARCH_PFN_OFFSET

2013-05-01T00:40:22+00:00

Add support for loading the kernel at a physical offset.  The
offset should still be 4M aligned.

Signed-off-by: Richard Kuo

Hexagon: Copyright marking changes

2012-10-18T22:07:21+00:00

Code Aurora Forum (CAF) is becoming a part of Linux Foundation Labs.

Signed-off-by: Richard Kuo

readahead: fault retry breaks mmap file read random detection

2012-10-09T07:22:47+00:00

.fault now can retry.  The retry can break state machine of .fault.  In
filemap_fault, if page is miss, ra->mmap_miss is increased.  In the second
try, since the page is in page cache now, ra->mmap_miss is decreased.  And
these are done in one fault, so we can't detect random mmap file access.

Add a new flag to indicate .fault is tried once.  In the second try, skip
ra->mmap_miss decreasing.  The filemap_fault state machine is ok with it.

I only tested x86, didn't test other archs, but looks the change for other
archs is obvious, but who knows :)

Signed-off-by: Shaohua Li 
Cc: Rik van Riel 
Cc: Wu Fengguang 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hexagon/mm/vm_fault.c: Port OOM changes to do_page_fault

2012-05-22T23:40:45+00:00

Commit d065bd810b6deb67d4897a14bfe21f8eb526ba99
(mm: retry page fault when blocking on disk transfer) and
commit 37b23e0525d393d48a7d59f870b3bc061a30ccdb
(x86,mm: make pagefault killable)

The above commits introduced changes into the x86 pagefault handler
for making the page fault handler retryable as well as killable.

These changes reduce the mmap_sem hold time, which is crucial
during OOM killer invocation.

Port these changes to hexagon.

Signed-off-by: Kautuk Consul 
Signed-off-by: Richard Kuo

Hexagon: Add configuration and makefiles for the Hexagon architecture.

2011-11-01T14:34:21+00:00

Signed-off-by: Linas Vepstas 
Signed-off-by: Richard Kuo 
Acked-by: Arnd Bergmann 
Signed-off-by: Linus Torvalds

Hexagon: Add page-fault support.

2011-11-01T14:34:20+00:00

Signed-off-by: Richard Kuo 
Signed-off-by: Linas Vepstas 
Acked-by: Arnd Bergmann 
Signed-off-by: Linus Torvalds

Hexagon: Add page table header files & etc.

2011-11-01T14:34:20+00:00

Signed-off-by: Richard Kuo 
Signed-off-by: Linas Vepstas 
Acked-by: Arnd Bergmann 
Signed-off-by: Linus Torvalds