Buildresult: linus/um-defconfig/um-x86_64 built on Jul 23 2022, 07:19

kisskb

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Status:	OK
Date/Time:	Jul 23 2022, 07:19
Duration:	0:00:29.356671
Builder:	ka7
Revision:	Merge tag 'rcu-urgent.2022.07.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu (`4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6)`
Target:	linus/um-defconfig/um-x86_64
Branch:	linus
Compiler:	um-x86_64 (x86_64-linux-gcc.br_real (Buildroot 2017.05) 5.4.0 / GNU ld (GNU Binutils) 2.27)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6^{commit} 4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6 already have revision, skipping fetch # git checkout -q -f -B kisskb 4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6 # git clean -qxdf # < git log -1 # commit 4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6 # Merge: 7fb5e5083190 4f2bfd9494a0 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Fri Jul 22 10:01:20 2022 -0700 # # Merge tag 'rcu-urgent.2022.07.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu # # Pull RCU fix from Paul McKenney: # "This contains a pair of commits that fix 282d8998e997 ("srcu: Prevent # expedited GPs and blocking readers from consuming CPU"), which was # itself a fix to an SRCU expedited grace-period problem that could # prevent kernel live patching (KLP) from completing. # # That SRCU fix for KLP introduced large (as in minutes) boot-time # delays to embedded Linux kernels running on qemu/KVM. These delays # were due to the emulation of certain MMIO operations controlling # memory layout, which were emulated with one expedited grace period per # access. Common configurations required thousands of boot-time MMIO # accesses, and thus thousands of boot-time expedited SRCU grace # periods. # # In these configurations, the occasional sleeps that allowed KLP to # proceed caused excessive boot delays. These commits preserve enough # sleeps to permit KLP to proceed, but few enough that the virtual # embedded kernels still boot reasonably quickly. # # This represents a regression introduced in the v5.19 merge window, and # the bug is causing significant inconvenience" # # * tag 'rcu-urgent.2022.07.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: # srcu: Make expedited RCU grace periods block even less frequently # srcu: Block less aggressively for expedited grace periods # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 4ba1329cbb9456c937bff1ed8ad4ca91ab75eab6 # < make -s -j 32 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig # < make -s -j 32 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help # make -s -j 32 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig # make -s -j 32 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 LINK linux Completed OK # rm -rf /kisskb/build/linus_um-defconfig_um-x86_64 # Build took: 0:00:29.356671

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