preempt-rt update (3.0.1-rt8 scc's)

The following series adds the necessary scc files in support of preempt-rt for the following machines. These have all been build tested, issues are noted below. A handful have been boot tested, also noted.
sugarbay
common-pc (boots)
common-pc-64
jasperforest
fri2
fishriver
emenlow
crownbay (boots)
qemuarm (arm-versatile-926ejs, boots)
qemumips (mti-malta32-be, panics on boot)
qemuppc (boot hangs with lost interrupts for hda) routerstationpro (build fails)
mpc8315e-rdb
beagleboard (build fails)

Also included in the series are some preempt-rt related configuration changes and a minor correction to a fix made for the mpc8315e-rdb compilation breakage with -Os in the boot Makefile.

The accompanying linux-yocto-rt recipes will follow once these are committed, and I have SRC_REVs to include in the recipes.

note: approximately 17 hadrosaurs were converted to electricity to complete
the necessary test builds.
The following changes since commit c692a2320dd10c7f3ac89f474f4bdd302da56634:

meta/rt: remove explicit patch references (2011-08-10 00:16:17 -0400)

are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/dvhart/yocto/linux-yocto-3.0.git dvhart/meta

Darren Hart (17):
meta/rt: use CONFIG_PREEMPT_RT_FULL for 3.0 kernels meta/rt: beagleboard preempt-rt support
meta/rt: mpc8315 preempt-rt support
meta-rt: rsp preempt-rt support
meta/rt: qemu-ppc32 preempt-rt support
meta/rt: mti-malta32-be preempt-rt support meta/rt: arm-versatile-926ejs preempt-rt support meta/rt: crownbay preempt-rt support
meta/rt: emenlow preempt-rt support
meta/rt: fishriver preempt-rt support
meta/rt: fri2 preempt-rt support
meta/rt: jasperforest preempt-rt support
meta/rt: common-pc[-64] preempt-rt no branch fix meta/rt: sugarbay preempt-rt support
mpc8315e-rdb: remove boot -Os patch which is now in base
routerstationpro: add remove-superfluous-endif patch to scc
routerstationpro: remove CONFIG_PREEMPT* definitions

 .../arm-versatile-926ejs-preempt-rt.scc            |    7 ++++
 .../bsp/beagleboard/beagleboard-preempt-rt.scc     |    7 ++++
 .../bsp/common-pc-64/common-pc-64-preempt-rt.scc   |    4 +-
 .../bsp/common-pc/common-pc-preempt-rt.scc         |    4 +-
 .../bsp/crownbay/crownbay-preempt-rt.scc           |    7 ++++
 .../bsp/emenlow/emenlow-preempt-rt.scc             |    7 ++++
 .../bsp/fishriver/fishriver-preempt-rt.scc         |    7 ++++
 meta/cfg/kernel-cache/bsp/fri2/fri2-preempt-rt.scc |    7 ++++
 .../fsl-mpc8315e-rdb-preempt-rt.scc                |    7 ++++
 .../bsp/fsl-mpc8315e-rdb/fsl-mpc8315e-rdb.scc      |    1 -
 .../powerpc-boot-remove-Os-from-BOOTFLAGS.patch    |   35 -------------------
 .../bsp/jasperforest/jasperforest-preempt-rt.scc   |    8 ++++
 .../bsp/mti-malta32/mti-malta32-be-preempt-rt.scc  |    8 ++++
 .../bsp/qemu-ppc32/qemu-ppc32-preempt-rt.scc       |    7 ++++
 .../remove-superfluous-endif-in-gpio-Kconfig.patch |   36 ++++++++++++++++++++
 .../routerstationpro-preempt-rt.scc                |    7 ++++
 .../bsp/routerstationpro/routerstationpro.cfg      |    3 --
 .../bsp/routerstationpro/routerstationpro.scc      |    1 +
 .../bsp/sugarbay/sugarbay-preempt-rt.scc           |    8 ++++
 .../kernel-cache/ktypes/preempt-rt/preempt-rt.cfg  |    2 +-
 20 files changed, 129 insertions(+), 44 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/arm-versatile-926ejs/arm-versatile-926ejs-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/beagleboard/beagleboard-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/crownbay/crownbay-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/emenlow/emenlow-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/fishriver/fishriver-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/fri2/fri2-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/fsl-mpc8315e-rdb/fsl-mpc8315e-rdb-preempt-rt.scc
 delete mode 100644 meta/cfg/kernel-cache/bsp/fsl-mpc8315e-rdb/powerpc-boot-remove-Os-from-BOOTFLAGS.patch
 create mode 100644 meta/cfg/kernel-cache/bsp/jasperforest/jasperforest-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/mti-malta32/mti-malta32-be-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/qemu-ppc32/qemu-ppc32-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/routerstationpro/remove-superfluous-endif-in-gpio-Kconfig.patch
 create mode 100644 meta/cfg/kernel-cache/bsp/routerstationpro/routerstationpro-preempt-rt.scc
 create mode 100644 meta/cfg/kernel-cache/bsp/sugarbay/sugarbay-preempt-rt.scc

1.7.6

The 3.0 preempt-rt patches use CONFIG_PREEMPT_RT_FULL instead of CONFIG_PREEMPT_RT. Without this fix, the preemmpt-rt kernels build with CONFIG_PREEMPT_NONE.

---
 .../kernel-cache/ktypes/preempt-rt/preempt-rt.cfg  |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

index d27dd4a..b71c51c 100644
@@ -10,7 +10,7 @@
 . consult the product documentation.
 .
 ..........................................................................
-CONFIG_PREEMPT_RT=y
+CONFIG_PREEMPT_RT_FULL=y
 CONFIG_HWLAT_DETECTOR=m
 
 CONFIG_SLAB=y

1.7.6

---
 .../bsp/beagleboard/beagleboard-preempt-rt.scc     |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/beagleboard/beagleboard-preempt-rt.scc

new file mode 100644
index 0000000..aa71a94
@@ -0,0 +1,7 @@
+define KMACHINE beagleboard
+define KTYPE preempt-rt
+define KARCH arm
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include beagleboard.scc

1.7.6

---
 .../fsl-mpc8315e-rdb-preempt-rt.scc                |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/fsl-mpc8315e-rdb/fsl-mpc8315e-rdb-preempt-rt.scc

new file mode 100644
index 0000000..e508545
@@ -0,0 +1,7 @@
+define KMACHINE fsl-mpc8315e-rdb
+define KTYPE preempt-rt
+define KARCH powerpc
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include fsl-mpc8315e-rdb.scc

1.7.6

---
 .../routerstationpro-preempt-rt.scc                |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/routerstationpro/routerstationpro-preempt-rt.scc

new file mode 100644
index 0000000..de11f5b
@@ -0,0 +1,7 @@
+define KMACHINE routerstationpro
+define KTYPE preempt-rt
+define KARCH mips
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include routerstationpro.scc

1.7.6

---
 .../bsp/qemu-ppc32/qemu-ppc32-preempt-rt.scc       |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/qemu-ppc32/qemu-ppc32-preempt-rt.scc

new file mode 100644
index 0000000..f0e7c26
@@ -0,0 +1,7 @@
+define KMACHINE qemu-ppc32
+define KTYPE preempt-rt
+define KARCH powerpc
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include qemu-ppc32.scc

1.7.6

---
 .../bsp/crownbay/crownbay-preempt-rt.scc           |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/crownbay/crownbay-preempt-rt.scc

new file mode 100644
index 0000000..d58b4be
@@ -0,0 +1,7 @@
+define KMACHINE crownbay
+define KTYPE preempt-rt
+define KARCH i386
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include crownbay.scc

1.7.6

---
 .../bsp/emenlow/emenlow-preempt-rt.scc             |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/emenlow/emenlow-preempt-rt.scc

new file mode 100644
index 0000000..156e4c6
@@ -0,0 +1,7 @@
+define KMACHINE emenlow
+define KTYPE preempt-rt
+define KARCH i386
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include emenlow.scc

1.7.6

---
 .../bsp/jasperforest/jasperforest-preempt-rt.scc   |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/jasperforest/jasperforest-preempt-rt.scc

new file mode 100644
index 0000000..4b5c2ca
@@ -0,0 +1,8 @@
+define KMACHINE jasperforest
+define KTYPE preempt-rt
+define KARCH x86_64
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include bsp/common-pc-64/common-pc-64.scc
+include jasperforest.scc

1.7.6

---
 .../bsp/common-pc-64/common-pc-64-preempt-rt.scc   |    4 ++--
 .../bsp/common-pc/common-pc-preempt-rt.scc         |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

index ec75067..ea13b44 100644
@@ -2,7 +2,7 @@ define KMACHINE common-pc-64
 define KTYPE preempt-rt
 define KARCH x86_64
 
-scc_leaf ktypes/preempt-rt common-pc-64
-
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
 include bsp/common-pc-64/common-pc-64.scc
 

index 71f9a15..f8716ee 100644
@@ -2,6 +2,6 @@ define KMACHINE common-pc
 define KTYPE preempt-rt
 define KARCH i386
 
-scc_leaf ktypes/preempt-rt common-pc
-
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
 include bsp/common-pc/common-pc.scc

1.7.6

---
 .../bsp/sugarbay/sugarbay-preempt-rt.scc           |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/sugarbay/sugarbay-preempt-rt.scc

new file mode 100644
index 0000000..e824f6f
@@ -0,0 +1,8 @@
+define KMACHINE sugarbay
+define KTYPE preempt-rt
+define KARCH x86_64
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include bsp/common-pc-64/common-pc-64.scc
+include sugarbay.scc

1.7.6

I asked for this patch to be pushed down to standard/base so that it would be available in the preempt-rt build as well. Turns out it would have been and now that I have the rt scc files right, this patch was getting double applied and do_patch was failing.

We can use this patch to remove it from the mpc8315 config, or we can revert pushing it down into standard/base.

---
 .../bsp/fsl-mpc8315e-rdb/fsl-mpc8315e-rdb.scc      |    1 -
 .../powerpc-boot-remove-Os-from-BOOTFLAGS.patch    |   35 --------------------
 2 files changed, 0 insertions(+), 36 deletions(-)
 delete mode 100644 meta/cfg/kernel-cache/bsp/fsl-mpc8315e-rdb/powerpc-boot-remove-Os-from-BOOTFLAGS.patch

index 4819a368..4a4d432 100644
@@ -4,6 +4,5 @@ include cfg/usb-mass-storage.scc
 include cfg/vfat.scc
 include features/dmaengine/dmaengine.scc
 
-patch powerpc-boot-remove-Os-from-BOOTFLAGS.patch
 patch fsl-mpc8315e-rdb-Enable-EEPROM.patch
 patch mpc8315erdb-fix-ethernet-at-boot-time.patch

deleted file mode 100644
index de0787c..0000000
@@ -1,35 +0,0 @@
-From 986e6eb66c26007cee7916d5d12f4756e6b5436f Mon Sep 17 00:00:00 2001
-From: Bruce Ashfield <[email protected]>
-Date: Thu, 14 Oct 2010 16:38:00 -0400
-Subject: [PATCH] powerpc/boot: remove -Os from BOOTFLAGS
-
-Some variants of gcc 4.5 have issues with -Os and will
-throw:
-
-  cc1: error: Do not use -Os option if --enable-target-optspace is not set.
-
--Os is not required to build a valid boot environment,
-so the easiest solution is to simply remove the boot
-flag.
-
-Signed-off-by: Bruce Ashfield <[email protected]>
----
- arch/powerpc/boot/Makefile |    2 +-
- 1 files changed, 1 insertions(+), 1 deletions(-)
-
-diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
-index bb2465b..c05f7ac 100644
---- a/arch/powerpc/boot/Makefile
-+++ b/arch/powerpc/boot/Makefile
-@@ -20,7 +20,7 @@
- all: $(obj)/zImage
- 
- BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
--		 -fno-strict-aliasing -Os -msoft-float -pipe \
-+		 -fno-strict-aliasing -msoft-float -pipe \
- 		 -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
- 		 -isystem $(shell $(CROSS32CC) -print-file-name=include)
- BOOTAFLAGS	:= -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
--- 
-1.7.0.4
-

1.7.6

The routerstationpro.cfg is a nearly complete .config and needs to be pruned. Among a lot of other things, it defines various CONFIG_PREEMPT* settings which conflict with the preempt-rt settings. Remove them as they should be ktype policy, not bsp specific settings.

---
 .../bsp/routerstationpro/routerstationpro.cfg      |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

index 1ac2c31..e08a92d 100644
@@ -197,9 +197,6 @@ CONFIG_HZ_250=y
 # CONFIG_HZ_1024 is not set
 CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
 CONFIG_HZ=250
-CONFIG_PREEMPT_NONE=y
-# CONFIG_PREEMPT_VOLUNTARY is not set
-# CONFIG_PREEMPT is not set
 CONFIG_SECCOMP=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_STACKTRACE_SUPPORT=y

1.7.6

---
 .../bsp/mti-malta32/mti-malta32-be-preempt-rt.scc  |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/mti-malta32/mti-malta32-be-preempt-rt.scc

new file mode 100644
index 0000000..9906af1
@@ -0,0 +1,8 @@
+define KMACHINE mti-malta32-be
+define KTYPE preempt-rt
+define KARCH mips
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include mti-malta32.scc
+kconf hardware mti-malta32-be.cfg

1.7.6

---
 .../arm-versatile-926ejs-preempt-rt.scc            |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/arm-versatile-926ejs/arm-versatile-926ejs-preempt-rt.scc

new file mode 100644
index 0000000..c5ba7fc
@@ -0,0 +1,7 @@
+define KMACHINE arm-versatile-926ejs
+define KTYPE preempt-rt
+define KARCH arm
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include arm-versatile-926ejs.scc

1.7.6

---
 .../bsp/fishriver/fishriver-preempt-rt.scc         |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/fishriver/fishriver-preempt-rt.scc

new file mode 100644
index 0000000..1a5e46a
@@ -0,0 +1,7 @@
+define KMACHINE fishriver
+define KTYPE preempt-rt
+define KARCH i386
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include fishriver.scc

1.7.6

---
 meta/cfg/kernel-cache/bsp/fri2/fri2-preempt-rt.scc |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/fri2/fri2-preempt-rt.scc

new file mode 100644
index 0000000..142d71a
@@ -0,0 +1,7 @@
+define KMACHINE fri2
+define KTYPE preempt-rt
+define KARCH i386
+
+# no new branch required, re-use the ktypes/preempt-rt branch
+include ktypes/preempt-rt
+include fri2.scc

1.7.6

This patch corresponds to the one I am sending for the standard/routerstationpro branch.

---
 .../remove-superfluous-endif-in-gpio-Kconfig.patch |   36 ++++++++++++++++++++
 .../bsp/routerstationpro/routerstationpro.scc      |    1 +
 2 files changed, 37 insertions(+), 0 deletions(-)
 create mode 100644 meta/cfg/kernel-cache/bsp/routerstationpro/remove-superfluous-endif-in-gpio-Kconfig.patch

new file mode 100644
index 0000000..32b4c33
@@ -0,0 +1,36 @@
+From 7c42fcf48b060cae1f8e4c54e4936bd3c6294110 Mon Sep 17 00:00:00 2001
+Message-Id: <7c42fcf48b060cae1f8e4c54e4936bd3c6294110.1313039692.git.dvhart@linux.intel.com>
+From: Darren Hart <[email protected]>
+Date: Wed, 10 Aug 2011 22:05:17 -0700
+Subject: [PATCH] routerstationpro: remove superfluous endif in gpio Kconfig
+
+The following patch introduced a superfluous endif at the end
+of drivers/gpio/Kconfig, resulting in configuration failures.
+
+commit d3bce96fa662b68f4de2146894c026a9da561df7
+Author: Zumeng Chen <[email protected]>
+Date:   Wed Sep 29 09:58:56 2010 +0800
+
+    Add gpio support for nxp_74hc153
+
+Remove the extra endif.
+
+Signed-off-by: Darren Hart <[email protected]>
+CC: Zumeng Chen <[email protected]>
+---
+ drivers/gpio/Kconfig |    2 --
+ 1 files changed, 0 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
+index 29591e2..df5c97c 100644
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -463,5 +463,3 @@ config GPIO_NXP_74HC153
+ 	help
+ 	  Platform driver for NXP 74HC153 Dual 4-input Multiplexer. This
+ 	  provides a GPIO interface supporting inputs.
+-
+-endif
+-- 
+1.7.6
+

index ce4b227..1bfa1ee 100644
@@ -6,6 +6,7 @@ include cfg/vfat.scc
 patch Add-arch-suport-for-ar71xx.patch
 patch Add-include-file-support-ar71xx.patch
 patch Add-gpio-support-for-nxp_74hc153.patch
+patch remove-superfluous-endif-in-gpio-Kconfig.patch
 patch Add-pci-supoprt-for-ar7xxx.patch
 patch Add-leds-support-for-ar71xx.patch
 patch Add-mtd-support-ar71xx.patch

1.7.6

On 08/11/2011 01:23 AM, Darren Hart wrote:

Oh the hypocrisy! For those of you that have caught my lack of detailed commentary for all the added preempt-rt .scc files - you are completely justified. I intended to paste a blurb for each and forgot by the time I sent them out. Probably not worth resending, but I will if Bruce is a 10th as picky as I am. Apologies.

--
Darren

Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel

Ack'd. This is good data, and we'll pull this in, since it improves the situation greatly. There is no guarantee that -rt will build and boot on ALL bsps, so having some non-functional boards is consistent with that approach.

I recall you mentioning that you'd open bugs for the issue, and that is a good idea. We can use it to track any efforts on this in the 1.1 and 1.1+ timeframe. We can disable the support in recipe space, or in the kernel before 1.1 is released, if we don't get any of the issues you raise addressed.

I just made a similar fix here, so we'll keep it pushed down, but keep the patch validation step happy.

17!

Merging has commenced, it will be in the upcoming pull request.

Bruce

I'll put something in place when merging. It really isn't very interesting, and is something that we can better describe outside of commits if anyone is interested. So a free pass on this one, and I'll do the tidyup.

Bruce