Relay buffer-only channels and its prereqs (resubmit)

Hello everybody,

Sorry for being so late to correct what Mathieu suggested.

Patch 1 has been acked by Mathieu. Vegard Nossum finds the 2nd patch useful for kmemcheck.

As previously discussed, these patches allow kmemtrace to start logging data as soon as kmem_cache_init() completes.

Please take a look and tell me what you think.

Cheers,
Eduard

Eduard - Gabriel Munteanu (3):
Unignore vmlinux.lds.h from Git.
Better interface for hooking early initcalls.
relay: Add buffer-only channels; useful for early logging.

 .gitignore                          |    1 +
 Documentation/filesystems/relay.txt |   11 +++
 include/asm-generic/vmlinux.lds.h   |    2 +
 include/linux/init.h                |    7 ++
 include/linux/relay.h               |    5 +
 init/main.c                         |   13 +++-
 kernel/relay.c                      |  141 +++++++++++++++++++++++++++--------
 7 files changed, 147 insertions(+), 33 deletions(-)