[PATCH] linux-yocto/5.2: fix strace/ptrace long runtime issues

[PATCH] linux-yocto/5.2: fix strace/ptrace long runtime issues

[bruce.ashfield]

From: Bruce Ashfield <bruce.ashfield@gmail.com>

Bumping SRCREVs to pickup the following kernel commit:

[
    Author: Bruce Ashfield <bruce.ashfield@gmail.com>
    Date:   Tue Oct 8 13:15:46 2019 +0000

        signal/ptrace: fix cgroup2/freezer long runtimes

        As reported in the thread: https://lkml.org/lkml/2019/10/1/789, in
        kernels with commit 76f969e8948d82 [cgroup: cgroup v2 freezer], we
        were seeing much longer runtime in strace/ptrace tests (4 minutes
        versus 4 seconds).

        The issue only manifests if CONFIG_PREEMPT is enabled, which is in
        all of the default configurations.

        As sugggested in the thread, the movement of preempt_enable_no_resched()
        until after the cgroup is frozen returns the behaviour to pre-5.2
        runtimes.

        Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

With this change in place, our times are back to normal:

   root@qemux86-64:~# cd /usr/lib/strace/ptest/tests
   root@qemux86-64:/usr/lib/strace/ptest/tests# time ../strace -o log -qq -esignal=none -e/clock ./printpath-umovestr>ttt

   real    0m3.909s
   user    0m0.534s
   sys     0m3.342s

This will eventually loop around via -stable, or may need future
tweaks, but it does address the immediate issue/symptom that we are
seeing, with no obvious side effects.

[YOCTO #13556]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
 .../linux/linux-yocto-rt_5.2.bb               |  4 ++--
 .../linux/linux-yocto-tiny_5.2.bb             |  6 +++---
 meta/recipes-kernel/linux/linux-yocto_5.2.bb  | 20 +++++++++----------
 3 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/meta/recipes-kernel/linux/linux-yocto-rt_5.2.bb b/meta/recipes-kernel/linux/linux-yocto-rt_5.2.bb
index acae24edb1..e3fe54441f 100644
--- a/meta/recipes-kernel/linux/linux-yocto-rt_5.2.bb
+++ b/meta/recipes-kernel/linux/linux-yocto-rt_5.2.bb
@@ -11,8 +11,8 @@ python () {
         raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
 }
 
-SRCREV_machine ?= "90a5890111ca601af1cfba50939d4003fa8d9ce8"
-SRCREV_meta ?= "56f5bc749e5a8e40b55a3819288ac277813ec5ef"
+SRCREV_machine ?= "0a9f6ee2443b54c614107728ca76485916010023"
+SRCREV_meta ?= "b867b78b5019ae455af97dec7794cff7527d7624"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;branch=${KBRANCH};name=machine \
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-5.2;destsuffix=${KMETA}"
diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny_5.2.bb b/meta/recipes-kernel/linux/linux-yocto-tiny_5.2.bb
index e6eb78198c..f3f546866b 100644
--- a/meta/recipes-kernel/linux/linux-yocto-tiny_5.2.bb
+++ b/meta/recipes-kernel/linux/linux-yocto-tiny_5.2.bb
@@ -15,9 +15,9 @@ DEPENDS += "openssl-native util-linux-native"
 KMETA = "kernel-meta"
 KCONF_BSP_AUDIT_LEVEL = "2"
 
-SRCREV_machine_qemuarm ?= "e31887832108a1dfac19601459a84a2fa38207f7"
-SRCREV_machine ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_meta ?= "56f5bc749e5a8e40b55a3819288ac277813ec5ef"
+SRCREV_machine_qemuarm ?= "aaa66d462ec17345dadd69b1ec0f3fcc83e82536"
+SRCREV_machine ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_meta ?= "b867b78b5019ae455af97dec7794cff7527d7624"
 
 PV = "${LINUX_VERSION}+git${SRCPV}"
 
diff --git a/meta/recipes-kernel/linux/linux-yocto_5.2.bb b/meta/recipes-kernel/linux/linux-yocto_5.2.bb
index 49b14b6185..1a2c3ffcd2 100644
--- a/meta/recipes-kernel/linux/linux-yocto_5.2.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_5.2.bb
@@ -12,16 +12,16 @@ KBRANCH_qemux86  ?= "v5.2/standard/base"
 KBRANCH_qemux86-64 ?= "v5.2/standard/base"
 KBRANCH_qemumips64 ?= "v5.2/standard/mti-malta64"
 
-SRCREV_machine_qemuarm ?= "d956bb318771761069228fc70fea722ceabecb75"
-SRCREV_machine_qemuarm64 ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_machine_qemumips ?= "9e95334637a4a85b19bea120f9027ff0028d7069"
-SRCREV_machine_qemuppc ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_machine_qemuriscv64 ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_machine_qemux86 ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_machine_qemux86-64 ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_machine_qemumips64 ?= "29a8d126f60d1b9e9cf0985b38da2033ebde25db"
-SRCREV_machine ?= "25b14cdf9659c68ab32d66616dfdbbe2ece3fd94"
-SRCREV_meta ?= "56f5bc749e5a8e40b55a3819288ac277813ec5ef"
+SRCREV_machine_qemuarm ?= "47b80ef7bd932830f299ed76e2302df631ae4fbe"
+SRCREV_machine_qemuarm64 ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_machine_qemumips ?= "45ff64cb3f87c38db6f46353ea93005d049b0cf6"
+SRCREV_machine_qemuppc ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_machine_qemuriscv64 ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_machine_qemux86 ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_machine_qemux86-64 ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_machine_qemumips64 ?= "ea0fd387a459803ac60e9b8a1729f2fc7d3215f1"
+SRCREV_machine ?= "255a750d28cd45df8923c3aba1e82c322757a50d"
+SRCREV_meta ?= "b867b78b5019ae455af97dec7794cff7527d7624"
 
 # remap qemuarm to qemuarma15 for the 5.2 kernel
 # KMACHINE_qemuarm ?= "qemuarma15"
-- 
2.19.1

✗ patchtest: failure for linux-yocto/5.2: fix strace/ptrace long runtime issues

[Patchwork]

== Series Details ==

Series: linux-yocto/5.2: fix strace/ptrace long runtime issues
Revision: 1
URL   : https://patchwork.openembedded.org/series/20369/
State : failure

== Summary ==


Thank you for submitting this patch series to OpenEmbedded Core. This is
an automated response. Several tests have been executed on the proposed
series by patchtest resulting in the following failures:



* Issue             Series does not apply on top of target branch [test_series_merge_on_head] 
  Suggested fix    Rebase your series on top of targeted branch
  Targeted branch  master (currently at d5fd205239)



If you believe any of these test results are incorrect, please reply to the
mailing list (openembedded-core@lists.openembedded.org) raising your concerns.
Otherwise we would appreciate you correcting the issues and submitting a new
version of the patchset if applicable. Please ensure you add/increment the
version number when sending the new version (i.e. [PATCH] -> [PATCH v2] ->
[PATCH v3] -> ...).

---
Guidelines:     https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
Test framework: http://git.yoctoproject.org/cgit/cgit.cgi/patchtest
Test suite:     http://git.yoctoproject.org/cgit/cgit.cgi/patchtest-oe