# git rev-parse -q --verify 5695e51619745d4fe3ec2506a2f0cd982c5e27a4^{commit} 5695e51619745d4fe3ec2506a2f0cd982c5e27a4 already have revision, skipping fetch # git checkout -q -f -B kisskb 5695e51619745d4fe3ec2506a2f0cd982c5e27a4 # git clean -qxdf # < git log -1 # commit 5695e51619745d4fe3ec2506a2f0cd982c5e27a4 # Merge: 5ceabb6078b8 d6ce7f6761bf # Author: Linus Torvalds # Date: Sat Feb 27 08:29:02 2021 -0800 # # Merge tag 'io_uring-worker.v3-2021-02-25' of git://git.kernel.dk/linux-block # # Pull io_uring thread rewrite from Jens Axboe: # "This converts the io-wq workers to be forked off the tasks in question # instead of being kernel threads that assume various bits of the # original task identity. # # This kills > 400 lines of code from io_uring/io-wq, and it's the worst # part of the code. We've had several bugs in this area, and the worry # is always that we could be missing some pieces for file types doing # unusual things (recent /dev/tty example comes to mind, userfaultfd # reads installing file descriptors is another fun one... - both of # which need special handling, and I bet it's not the last weird oddity # we'll find). # # With these identical workers, we can have full confidence that we're # never missing anything. That, in itself, is a huge win. Outside of # that, it's also more efficient since we're not wasting space and code # on tracking state, or switching between different states. # # I'm sure we're going to find little things to patch up after this # series, but testing has been pretty thorough, from the usual # regression suite to production. Any issue that may crop up should be # manageable. # # There's also a nice series of further reductions we can do on top of # this, but I wanted to get the meat of it out sooner rather than later. # The general worry here isn't that it's fundamentally broken. Most of # the little issues we've found over the last week have been related to # just changes in how thread startup/exit is done, since that's the main # difference between using kthreads and these kinds of threads. In fact, # if all goes according to plan, I want to get this into the 5.10 and # 5.11 stable branches as well. # # That said, the changes outside of io_uring/io-wq are: # # - arch setup, simple one-liner to each arch copy_thread() # implementation. # # - Removal of net and proc restrictions for io_uring, they are no # longer needed or useful" # # * tag 'io_uring-worker.v3-2021-02-25' of git://git.kernel.dk/linux-block: (30 commits) # io-wq: remove now unused IO_WQ_BIT_ERROR # io_uring: fix SQPOLL thread handling over exec # io-wq: improve manager/worker handling over exec # io_uring: ensure SQPOLL startup is triggered before error shutdown # io-wq: make buffered file write hashed work map per-ctx # io-wq: fix race around io_worker grabbing # io-wq: fix races around manager/worker creation and task exit # io_uring: ensure io-wq context is always destroyed for tasks # arch: ensure parisc/powerpc handle PF_IO_WORKER in copy_thread() # io_uring: cleanup ->user usage # io-wq: remove nr_process accounting # io_uring: flag new native workers with IORING_FEAT_NATIVE_WORKERS # net: remove cmsg restriction from io_uring based send/recvmsg calls # Revert "proc: don't allow async path resolution of /proc/self components" # Revert "proc: don't allow async path resolution of /proc/thread-self components" # io_uring: move SQPOLL thread io-wq forked worker # io-wq: make io_wq_fork_thread() available to other users # io-wq: only remove worker from free_list, if it was there # io_uring: remove io_identity # io_uring: remove any grabbing of context # ... # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 5695e51619745d4fe3ec2506a2f0cd982c5e27a4 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_defconfig # < make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:10:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:12, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd5da04) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd4d2d8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6499488 Bytes = 6347.16 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6500091 Bytes = 6347.75 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497402 Bytes = 6345.12 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6500125 Bytes = 6347.78 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497337 Bytes = 6345.06 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6500222 Bytes = 6347.87 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497581 Bytes = 6345.29 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6500296 Bytes = 6347.95 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6468170 Bytes = 6316.57 KiB = 6.17 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497412 Bytes = 6345.13 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497721 Bytes = 6345.43 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497403 Bytes = 6345.12 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497812 Bytes = 6345.52 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497813 Bytes = 6345.52 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497581 Bytes = 6345.29 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-g5695e5161974 Created: Sun Feb 28 07:37:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6497823 Bytes = 6345.53 KiB = 6.20 MiB Load Address: 00e00000 Entry Point: 00e00314 Completed OK # rm -rf /kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.9 # Build took: 0:01:21.090134