# git rev-parse -q --verify 0bcfe68b876748762557797a940d0a82de700629^{commit} 0bcfe68b876748762557797a940d0a82de700629 already have revision, skipping fetch # git checkout -q -f -B kisskb 0bcfe68b876748762557797a940d0a82de700629 # git clean -qxdf # < git log -1 # commit 0bcfe68b876748762557797a940d0a82de700629 # Author: Linus Torvalds # Date: Tue Sep 7 11:26:23 2021 -0700 # # Revert "memcg: enable accounting for pollfd and select bits arrays" # # This reverts commit b655843444152c0a14b749308e4cb35d91cbcf0b. # # Just like with the memcg lock accounting, the kernel test robot reports # a sizeable performance regression for this commit, and while it clearly # does the rigth thing in theory, we'll need to look at just how to avoid # or minimize the performance overhead of the memcg accounting. # # People already have suggestions on how to do that, but it's "future # work". # # So revert it for now. # # [ Note: the first link below is for this same commit but a different # commit ID, because it's the kernel test robot ended up noticing it in # Andrew Morton's patch queue ] # # Link: https://lore.kernel.org/lkml/20210905132732.GC15026@xsang-OptiPlex-9020/ # Link: https://lore.kernel.org/lkml/20210907150757.GE17617@xsang-OptiPlex-9020/ # Acked-by: Jens Axboe # Acked-by: Shakeel Butt # Acked-by: Roman Gushchin # Cc: Tejun Heo # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 0bcfe68b876748762557797a940d0a82de700629 # < make -s -j 32 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 44x/fsp2_defconfig # < make -s -j 32 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 32 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 32 ARCH=powerpc O=/kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- Completed OK # rm -rf /kisskb/build/linus_44x_fsp2_defconfig_powerpc-gcc5 # Build took: 0:01:31.389842