[0/3] linux-yocto: consolidated pull request

Submitted by Bruce Ashfield on Sept. 18, 2013, 6:24 p.m. | Patch ID: 58339


Message ID cover.1379528498.git.bruce.ashfield@windriver.com
State New
Headers show


git://git.pokylinux.org/poky-contrib zedd/kernel

Commit Message

Bruce Ashfield Sept. 18, 2013, 6:24 p.m.

Here are three fixes for the upcoming RCs and release. Once is a new branch, but
has zero impact on existing boards, so I've gone ahead and added it for this
upcoming release. The other two are bug fixes.

[PATCH 1/3] linux-yocto/3.8: add haswell-wc board config and branch

   Bumping the meta branch SRCREV to import the following board support:

     meta: add haswell-wc bsp for Intel Haswell Platform (Walnut Canyon CRB) scc and config files

[PATCH 2/3] linux-yocto/3.10: mips configuration changes

   Updating the 3.10 SRCREV to import the following MIPS configuration changes

      4f689aa meta: remove ftrace/ftrace-disable feature
      3058d81 mips: have the mips BSPs disable function tracing instead of ftrace
      935f43f meta: add ftrace/ftrace-function-tracer-disable feature
      0d72a03 mti-malta64: Default to support o32 and n32 userspace binaries

   The first three changes improve the ftrace disabling fragments, to allow tracepoints
   and ftrace to be enabled, while only disabling dynamic ftrace. This allows tools
   that required tracepoints (like lttng) to be built against MIPS.

   The mti-malta64 change adds n32 and o32 support to the default configuration to
   support a broader range of userspace binaries.

   [YOCTO #5215]

   Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
   Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

[PATCH 3/3] linux-yocto/3.10: fix long perf compile times

   perf's builtin-sched.c triggers extremly long build times on some
   architectures due to gcc 4.7+ var-tracking functionality.

   To fix this, we can cherry pick the 3.12 commit:

     f36f83f94 [perf sched: Move struct perf_sched definition out of cmd_sched()]

   With this change build times are reduced from 15 to 20 minutes for qemuarm to:

     real    2m19.940s
     user    1m35.438s
     sys     0m11.165s

   For kernel's that are not carrying this patch, the following can be added
   to the perf recipe to also fix the issue:

       +++ b/meta/recipes-kernel/perf/perf.bb
       @@ -68,6 +68,7 @@ EXTRA_OEMAKE = \
		       CC="${CC}" \
		       AR="${AR}" \
		       perfexecdir=${libexecdir} \
       +               EXTRA_CFLAGS="-fno-var-tracking" \



The following changes since commit 99b41732458871080cfa7a9bad3f8dfe03e026be:

  perf: Add LDFLAGS to allow build of old kernels without patching (2013-09-18 17:54:42 +0100)

are available in the git repository at:

  git://git.pokylinux.org/poky-contrib zedd/kernel

Bruce Ashfield (3):
  linux-yocto/3.8: add haswell-wc board config and branch
  linux-yocto/3.10: mips configuration changes
  linux-yocto/3.10: fix long perf compile times

 meta/recipes-kernel/linux/linux-yocto-rt_3.10.bb   |    6 +++---
 meta/recipes-kernel/linux/linux-yocto-rt_3.8.bb    |    2 +-
 meta/recipes-kernel/linux/linux-yocto-tiny_3.10.bb |    4 ++--
 meta/recipes-kernel/linux/linux-yocto-tiny_3.8.bb  |    2 +-
 meta/recipes-kernel/linux/linux-yocto_3.10.bb      |   16 ++++++++--------
 meta/recipes-kernel/linux/linux-yocto_3.8.bb       |    2 +-
 6 files changed, 16 insertions(+), 16 deletions(-)