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

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Submitter Bruce Ashfield
Date Sept. 14, 2012, 4:57 a.m.
Message ID <5f0da99ea0b685191dc7b8fd5fd633783ed92664.1347597967.git.bruce.ashfield@windriver.com>
Download mbox | patch
Permalink /patch/36517/
State Accepted
Commit b681b74624d1c8c4c98b2a121828e010fc5c3a25
Headers show

Comments

Bruce Ashfield - Sept. 14, 2012, 4:57 a.m.
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(-)
Richard Purdie - Sept. 14, 2012, 8:58 a.m.
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

Patch

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"