# git rev-parse -q --verify ce77a983b603b21b1b4b209fd264011f09064af5^{commit} ce77a983b603b21b1b4b209fd264011f09064af5 already have revision, skipping fetch # git checkout -q -f -B kisskb ce77a983b603b21b1b4b209fd264011f09064af5 # git clean -qxdf # < git log -1 # commit ce77a983b603b21b1b4b209fd264011f09064af5 # Author: Nicholas Piggin # Date: Fri May 11 03:20:05 2018 +1000 # # powerpc/powernv: process all OPAL event interrupts with kopald # # Using irq_work for processing OPAL event interrupts is not necessary. # irq_work is typically used to schedule work from NMI context, a # softirq may be more appropriate. However OPAL events are not # particularly performance or latency critical, so they can all be # invoked by kopald. # # This patch removes the irq_work queueing, and instead wakes up # kopald when there is an event to be processed. kopald processes # interrupts individually, enabling irqs and calling cond_resched # between each one to minimise latencies. # # Event handlers themselves should still use threaded handlers, # workqueues, etc. as necessary to avoid high interrupts-off latencies # within any single interrupt. # # Signed-off-by: Nicholas Piggin # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < git log --format=%s --max-count=1 ce77a983b603b21b1b4b209fd264011f09064af5 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_c2k_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- c2k_defconfig WARNING: unmet direct dependencies detected for NOT_COHERENT_CACHE Depends on [n]: 4xx [=n] || PPC_8xx [=n] || E200 [=n] || PPC_MPC512x [=n] || GAMECUBE_COMMON [=n] Selected by [y]: - PPC_C2K [=y] && EMBEDDED6xx [=y] WARNING: unmet direct dependencies detected for NOT_COHERENT_CACHE Depends on [n]: 4xx [=n] || PPC_8xx [=n] || E200 [=n] || PPC_MPC512x [=n] || GAMECUBE_COMMON [=n] Selected by [y]: - PPC_C2K [=y] && EMBEDDED6xx [=y] # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_c2k_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- WARNING: unmet direct dependencies detected for NOT_COHERENT_CACHE Depends on [n]: 4xx [=n] || PPC_8xx [=n] || E200 [=n] || PPC_MPC512x [=n] || GAMECUBE_COMMON [=n] Selected by [y]: - PPC_C2K [=y] && EMBEDDED6xx [=y] WARNING: unmet direct dependencies detected for NOT_COHERENT_CACHE Depends on [n]: 4xx [=n] || PPC_8xx [=n] || E200 [=n] || PPC_MPC512x [=n] || GAMECUBE_COMMON [=n] Selected by [y]: - PPC_C2K [=y] && EMBEDDED6xx [=y] INFO: Uncompressed kernel (size 0x6bffe4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) Image Name: Linux-4.17.0-rc3-gce77a98 Created: Fri Jun 1 02:15:02 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3291931 Bytes = 3214.78 kB = 3.14 MB Load Address: 00700000 Entry Point: 00700508 Completed OK # rm -rf /kisskb/build/powerpc-next_c2k_defconfig_powerpc-5.3 # Build took: 0:01:38.546824