[PATCH 0/1] linux-yocto/3.4: make uprobes select perf events

[PATCH 0/1] linux-yocto/3.4: make uprobes select perf events

[Bruce Ashfield]

Richard/Saul,

This update addresses YOCTO #3111, which is a build a failure on the mpc8315
after uprobes was enabled.

We ended up fixing this twice (but both are good fixes), there's a kernel
Kconfig fix from me and a kernel configuration fix by TomZ.  Both fix the
problem for the board showing the build error and have no impact on the other
(already building) boards.

cc: Tom Zanussi <tom.zanussi@intel.com>

Cheers,

Bruce

The following changes since commit 1d5e637e32e10d7dabd19fbff9f4b25cc280daa2:

  linux-yocto: virtio and KVM guest configuration (2012-09-13 15:04:32 -0400)

are available in the git repository at:
  git://git.pokylinux.org/poky-contrib zedd/uprobes
  http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=zedd/uprobes

Bruce Ashfield (1):
  linux-yocto/3.4: make uprobes select perf events

 meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb |    6 +++---
 meta/recipes-kernel/linux/linux-yocto_3.4.bb    |   14 +++++++-------
 2 files changed, 10 insertions(+), 10 deletions(-)

-- 
1.7.5.4

[PATCH 1/1] linux-yocto/3.4: make uprobes select perf events

[Bruce Ashfield]

uprobes depends on functionality provided by perf events. After
uprobes was enabled in the standard kernel the mpc8315 board showed
link errors due to missing perf event functions.

This problem isn't isolated to the board or powerpc arch, but all
other boards have PERF_EVENTS enabled. To fix this, we make UPROBE_EVENT
select PERF_EVENTS, and any new boards will be protected from the
same failure.

We also update the configuration fragments since CONFIG_UPROBES depends on
CONFIG_PERF_EVENTS being set, so PERF_EVENTS needs to be added whenever
uprobes are enabled.

[YOCTO #3111]

Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
---
 meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb |    6 +++---
 meta/recipes-kernel/linux/linux-yocto_3.4.bb    |   14 +++++++-------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb b/meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb
index 3b6b4e7..e42216b 100644
--- a/meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb
+++ b/meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb
@@ -8,9 +8,9 @@ LINUX_KERNEL_TYPE = "preempt-rt"
 
 KMETA = "meta"
 
-SRCREV_machine ?= "a35693b1287c0e50cdca33a1b95af0ff48b43cd0"
-SRCREV_machine_qemuppc ?= "85a1190530cb5749f5f831670976b163438dc301"
-SRCREV_meta ?= "79947f1eb9f695c374ba63672f94deaa1de75561"
+SRCREV_machine ?= "dcecefa43e05f5450886648a93e2fda2ec35e2dc"
+SRCREV_machine_qemuppc ?= "5e8709c4777f07a12b0a05a22f0864f552ef9449"
+SRCREV_meta ?= "7c50e572635d356f0b66d9ab90823f127f835744"
 
 PR = "${INC_PR}.0"
 PV = "${LINUX_VERSION}+git${SRCPV}"
diff --git a/meta/recipes-kernel/linux/linux-yocto_3.4.bb b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
index 0812cff..7c082e7 100644
--- a/meta/recipes-kernel/linux/linux-yocto_3.4.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
@@ -3,13 +3,13 @@ require recipes-kernel/linux/linux-yocto.inc
 KBRANCH_DEFAULT = "standard/base"
 KBRANCH = "${KBRANCH_DEFAULT}"
 
-SRCREV_machine_qemuarm ?= "b15e7b1e9b58b9863bd87778775f86cd8d8880ea"
-SRCREV_machine_qemumips  ?= "8d5b98f263b5119af2dc30223f311be17173bab9"
-SRCREV_machine_qemuppc ?= "b9a720ca38d298ed457f37d099c85771f9164b19"
-SRCREV_machine_qemux86 ?= "46d8c757b3be1953f30d6745505d24436e2d6844"
-SRCREV_machine_qemux86-64 ?= "46d8c757b3be1953f30d6745505d24436e2d6844"
-SRCREV_machine ?= "46d8c757b3be1953f30d6745505d24436e2d6844"
-SRCREV_meta ?= "79947f1eb9f695c374ba63672f94deaa1de75561"
+SRCREV_machine_qemuarm ?= "679978b4fd1ef8cfea97d4ee4b4cd7c51bc62ee2"
+SRCREV_machine_qemumips  ?= "9c7810609ff37a77e8d39680f98f1baefee18a80"
+SRCREV_machine_qemuppc ?= "cf4bad14983753ad4b592c40fb36466b202b24a4"
+SRCREV_machine_qemux86 ?= "59c3ff750831338d05ab67d5efd7fc101c451aff"
+SRCREV_machine_qemux86-64 ?= "59c3ff750831338d05ab67d5efd7fc101c451aff"
+SRCREV_machine ?= "59c3ff750831338d05ab67d5efd7fc101c451aff"
+SRCREV_meta ?= "7c50e572635d356f0b66d9ab90823f127f835744"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto-3.4.git;protocol=git;nocheckout=1;branch=${KBRANCH},meta;name=machine,meta"
 
-- 
1.7.5.4

Re: [PATCH 1/1] linux-yocto/3.4: make uprobes select perf events

[Richard Purdie]

On Fri, 2012-09-14 at 00:57 -0400, Bruce Ashfield wrote:
> uprobes depends on functionality provided by perf events. After
> uprobes was enabled in the standard kernel the mpc8315 board showed
> link errors due to missing perf event functions.
> 
> This problem isn't isolated to the board or powerpc arch, but all
> other boards have PERF_EVENTS enabled. To fix this, we make UPROBE_EVENT
> select PERF_EVENTS, and any new boards will be protected from the
> same failure.
> 
> We also update the configuration fragments since CONFIG_UPROBES depends on
> CONFIG_PERF_EVENTS being set, so PERF_EVENTS needs to be added whenever
> uprobes are enabled.
> 
> [YOCTO #3111]
> 
> Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
> Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
> ---
>  meta/recipes-kernel/linux/linux-yocto-rt_3.4.bb |    6 +++---
>  meta/recipes-kernel/linux/linux-yocto_3.4.bb    |   14 +++++++-------
>  2 files changed, 10 insertions(+), 10 deletions(-)

Merged to master, thanks.

Richard