# git rev-parse -q --verify b92d1aabe9aace6ffd3399cae2ba52b6a927f7d7^{commit} b92d1aabe9aace6ffd3399cae2ba52b6a927f7d7 already have revision, skipping fetch # git checkout -q -f -B kisskb b92d1aabe9aace6ffd3399cae2ba52b6a927f7d7 # git clean -qxdf # < git log -1 # commit b92d1aabe9aace6ffd3399cae2ba52b6a927f7d7 # Author: Nicholas Piggin # Date: Wed Nov 10 12:50:56 2021 +1000 # # powerpc/watchdog: read TB close to where it is used # # When taking watchdog actions, printing messages, comparing and # re-setting wd_smp_last_reset_tb, etc., read TB close to the point of use # and under wd_smp_lock or printing lock (if applicable). # # This should keep timebase mostly monotonic with kernel log messages, and # could prevent (in theory) a laggy CPU updating wd_smp_last_reset_tb to # something a long way in the past, and causing other CPUs to appear to be # stuck. # # These additional TB reads are all slowpath (lockup has been detected), # so performance does not matter. # # Signed-off-by: Nicholas Piggin # Reviewed-by: Laurent Dufour # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20211110025056.2084347-5-npiggin@gmail.com # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version # < git log --format=%s --max-count=1 b92d1aabe9aace6ffd3399cae2ba52b6a927f7d7 # < make -s -j 8 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux- defconfig # < make -s -j 8 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux- help # make -s -j 8 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux- olddefconfig # make -s -j 8 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux- Completed OK # rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc11 # Build took: 0:13:27.226707