From cdb9ea2a8b74d6675bd1af31835995a8f983bbf3 Mon Sep 17 00:00:00 2001 From: Bruce Ashfield Date: Tue, 8 Oct 2019 10:26:29 -0400 Subject: linux-yocto/5.2: fix strace/ptrace long runtime issues Bumping SRCREVs to pickup the following kernel commit: [ Author: Bruce Ashfield 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 ] 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] (From OE-Core rev: 55a54aed27ffa94a235da526a39aeea59caa3417) Signed-off-by: Bruce Ashfield Signed-off-by: Richard Purdie --- meta/recipes-kernel/linux/linux-yocto_5.2.bb | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'meta/recipes-kernel/linux/linux-yocto_5.2.bb') 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" -- cgit v1.2.3-54-g00ecf