tracing, Text Edit Lock - kprobes architecture independent support, nommu fix
authorIngo Molnar <mingo@elte.hu>
Fri, 20 Mar 2009 10:05:04 +0000 (11:05 +0100)
committerIngo Molnar <mingo@elte.hu>
Fri, 20 Mar 2009 10:09:27 +0000 (11:09 +0100)
commit505f2b970b2269ce4cb669b3ff4f6479d379cec2
tree741b9ed4752d852eb8b01dd4b4be765c9f37015e
parent22de89b371a18086162eacd9f8c960299334ab01
tracing, Text Edit Lock - kprobes architecture independent support, nommu fix

Impact: build fix on SH !CONFIG_MMU

Stephen Rothwell reported this linux-next build failure on the SH
architecture:

  kernel/built-in.o: In function `disable_all_kprobes':
  kernel/kprobes.c:1382: undefined reference to `text_mutex'
  [...]

And observed:

| Introduced by commit 4460fdad85becd569f11501ad5b91814814335ff ("tracing,
| Text Edit Lock - kprobes architecture independent support") from the
| tracing tree.  text_mutex is defined in mm/memory.c which is only built
| if CONFIG_MMU is defined, which is not true for sh allmodconfig.

Move this lock to kernel/extable.c (which is already home to various
kernel text related routines), which file is always built-in.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
LKML-Reference: <20090320110602.86351a91.sfr@canb.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/extable.c
mm/memory.c