linux-toradex.git/include/asm-arm26, branch v2.6.16.2

[PATCH] add asm-generic/mman.h

2006-02-15T23:32:22+00:00

Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all
arches.  The idea is to make it possible to use them portably even before
distros include them in libc headers.

Move common flags to asm-generic/mman.h

Signed-off-by: Michael S. Tsirkin 
Cc: Roland Dreier 
Cc: Badari Pulavarty 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] madvise MADV_DONTFORK/MADV_DOFORK

2006-02-15T00:09:34+00:00

Currently, copy-on-write may change the physical address of a page even if the
user requested that the page is pinned in memory (either by mlock or by
get_user_pages).  This happens if the process forks meanwhile, and the parent
writes to that page.  As a result, the page is orphaned: in case of
get_user_pages, the application will never see any data hardware DMA's into
this page after the COW.  In case of mlock'd memory, the parent is not getting
the realtime/security benefits of mlock.

In particular, this affects the Infiniband modules which do DMA from and into
user pages all the time.

This patch adds madvise options to control whether memory range is inherited
across fork.  Useful e.g.  for when hardware is doing DMA from/into these
pages.  Could also be useful to an application wanting to speed up its forks
by cutting large areas out of consideration.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Hugh Dickins 
Cc: Michael Kerrisk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: add __kernel_old_dev_t for nfsd

2006-02-01T16:53:22+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: drop first arg of prepare_arch_switch, finish_arch_switch

2006-02-01T16:53:22+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: drop local task_running copy

2006-02-01T16:53:21+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: remove irq_exit() from hardirq.h

2006-02-01T16:53:21+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: fix warnings about NR_IRQS being not defined

2006-02-01T16:53:21+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: fix find_first_zero_bit related warnings

2006-02-01T16:53:21+00:00

include/linux/nodemask.h: In function `__first_unset_node':
include/linux/nodemask.h:254: warning: passing arg 1 of `_find_first_zero_bit_le' discards qualifiers from pointer target type
fs/minix/bitmap.c: In function `minix_new_block':
fs/minix/bitmap.c:89: warning: passing arg 1 of `_find_first_zero_bit_le' from incompatible pointer type

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: add L1_CACHE_SHIFT

2006-01-17T07:15:26+00:00

Fix reiserfs compilation as a side effect =)

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] fix arm26 THREAD_SIZE

2006-01-17T07:15:25+00:00

arm26 currently has a 256 kB THREAD_SIZE (sic).

Looking at the comment in the code, this seems to be based on a
misunderstanding.

The comment says:
this needs attention (see kernel/fork.c which gets a nice div by zero if
this is lower than 8*32768

kernel/fork.c does:
  max_threads = mempages / (8 * THREAD_SIZE / PAGE_SIZE)

Therefore, a division by 0 is impossible for all reasonable cases with
THREAD_SIZE >= PAGE_SIZE.

Since the minimum PAGE_SIZE Linux uses on the arm26 architecture is 16k,
PAGE_SIZE should be sufficient for THREAD_SIZE.

Signed-off-by: Adrian Bunk 
Signed-off-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds