# git rev-parse -q --verify cdc8fcb49905c0b67e355e027cb462ee168ffaa3^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify cdc8fcb49905c0b67e355e027cb462ee168ffaa3^{commit}
cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# git checkout -q -f -B kisskb cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# git clean -qxdf
# < git log -1
# commit cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# Merge: 382625d0d432 fa15bafb71fd
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Aug 3 13:01:22 2020 -0700
# 
#     Merge tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block
#     
#     Pull io_uring updates from Jens Axboe:
#      "Lots of cleanups in here, hardening the code and/or making it easier
#       to read and fixing bugs, but a core feature/change too adding support
#       for real async buffered reads. With the latter in place, we just need
#       buffered write async support and we're done relying on kthreads for
#       the fast path. In detail:
#     
#        - Cleanup how memory accounting is done on ring setup/free (Bijan)
#     
#        - sq array offset calculation fixup (Dmitry)
#     
#        - Consistently handle blocking off O_DIRECT submission path (me)
#     
#        - Support proper async buffered reads, instead of relying on kthread
#          offload for that. This uses the page waitqueue to drive retries
#          from task_work, like we handle poll based retry. (me)
#     
#        - IO completion optimizations (me)
#     
#        - Fix race with accounting and ring fd install (me)
#     
#        - Support EPOLLEXCLUSIVE (Jiufei)
#     
#        - Get rid of the io_kiocb unionizing, made possible by shrinking
#          other bits (Pavel)
#     
#        - Completion side cleanups (Pavel)
#     
#        - Cleanup REQ_F_ flags handling, and kill off many of them (Pavel)
#     
#        - Request environment grabbing cleanups (Pavel)
#     
#        - File and socket read/write cleanups (Pavel)
#     
#        - Improve kiocb_set_rw_flags() (Pavel)
#     
#        - Tons of fixes and cleanups (Pavel)
#     
#        - IORING_SQ_NEED_WAKEUP clear fix (Xiaoguang)"
#     
#     * tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block: (127 commits)
#       io_uring: flip if handling after io_setup_async_rw
#       fs: optimise kiocb_set_rw_flags()
#       io_uring: don't touch 'ctx' after installing file descriptor
#       io_uring: get rid of atomic FAA for cq_timeouts
#       io_uring: consolidate *_check_overflow accounting
#       io_uring: fix stalled deferred requests
#       io_uring: fix racy overflow count reporting
#       io_uring: deduplicate __io_complete_rw()
#       io_uring: de-unionise io_kiocb
#       io-wq: update hash bits
#       io_uring: fix missing io_queue_linked_timeout()
#       io_uring: mark ->work uninitialised after cleanup
#       io_uring: deduplicate io_grab_files() calls
#       io_uring: don't do opcode prep twice
#       io_uring: clear IORING_SQ_NEED_WAKEUP after executing task works
#       io_uring: batch put_task_struct()
#       tasks: add put_task_struct_many()
#       io_uring: return locked and pinned page accounting
#       io_uring: don't miscount pinned memory
#       io_uring: don't open-code recv kbuf managment
#       ...
# < /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 cdc8fcb49905c0b67e355e027cb462ee168ffaa3
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
KCONFIG_SEED=0x753DF580
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:5885:warning: override: reassigning to symbol STANDALONE
.config:5889:warning: override: reassigning to symbol PPC64
.config:5892:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
.config:5897:warning: override: reassigning to symbol UBSAN
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/platforms/powernv/pci-ioda.c:1888:13: warning: 'pnv_ioda_setup_bus_dma' defined but not used [-Wunused-function]
 static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus)
             ^
/kisskb/src/arch/powerpc/kernel/eeh.c:1707:12: warning: 'proc_eeh_show' defined but not used [-Wunused-function]
 static int proc_eeh_show(struct seq_file *m, void *v)
            ^
/kisskb/src/drivers/cpufreq/powernv-cpufreq.c: In function 'powernv_cpufreq_reboot_notifier':
/kisskb/src/drivers/cpufreq/powernv-cpufreq.c:896:1: warning: the frame size of 1264 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
WARNING: 136 bad relocations
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c000000001655536 R_PPC64_UADDR64   .rodata+0x0000000000bab5d8
c000000001655551 R_PPC64_UADDR64   .rodata+0x0000000000bab5e3
c00000000165556c R_PPC64_UADDR64   .rodata+0x0000000000bab5ee
c000000001655587 R_PPC64_UADDR64   .rodata+0x0000000000bab5fa
c0000000016555a2 R_PPC64_UADDR64   .rodata+0x0000000000bab607
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c0000000016555f3 R_PPC64_UADDR64   .rodata+0x0000000000bab627
c00000000165560e R_PPC64_UADDR64   .rodata+0x0000000000bab631
c000000001655629 R_PPC64_UADDR64   .rodata+0x0000000000bab639
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c00000000165565f R_PPC64_UADDR64   .rodata+0x0000000000bab64a
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c000000001655b39 R_PPC64_UADDR64   .rodata+0x0000000000babad5
c000000001655b54 R_PPC64_UADDR64   .rodata+0x0000000000babadf
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c000000001655ce9 R_PPC64_UADDR64   .rodata+0x0000000000bab85c
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c000000001655d3a R_PPC64_UADDR64   .rodata+0x0000000000bab87e
c000000001655d55 R_PPC64_UADDR64   .rodata+0x0000000000bab893
c000000001655d8b R_PPC64_UADDR64   .rodata+0x0000000000bab8b0
c000000001655da6 R_PPC64_UADDR64   .rodata+0x0000000000bab8c0
c000000001655dc1 R_PPC64_UADDR64   .rodata+0x0000000000bab8d0
c000000001655ddc R_PPC64_UADDR64   .rodata+0x0000000000bab8e1
c000000001655df7 R_PPC64_UADDR64   .rodata+0x0000000000bab8e9
c000000001655e12 R_PPC64_UADDR64   .rodata+0x0000000000bab8f3
c000000001655e2d R_PPC64_UADDR64   .rodata+0x0000000000bab8fd
c000000001655e63 R_PPC64_UADDR64   .rodata+0x0000000000bab919
c000000001655e7e R_PPC64_UADDR64   .rodata+0x0000000000bab922
c000000001655e99 R_PPC64_UADDR64   .rodata+0x0000000000bab92e
c000000001655eb4 R_PPC64_UADDR64   .rodata+0x0000000000bab93a
c000000001655ecf R_PPC64_UADDR64   .rodata+0x0000000000bab97b
c000000001655eea R_PPC64_UADDR64   .rodata+0x0000000000bab9a9
c000000001655f05 R_PPC64_UADDR64   .rodata+0x0000000000bab943
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c000000001655f71 R_PPC64_UADDR64   .rodata+0x0000000000bab971
c000000001655f8c R_PPC64_UADDR64   .rodata+0x0000000000bab97a
c000000001655fa7 R_PPC64_UADDR64   .rodata+0x0000000000bab983
c000000001655fc2 R_PPC64_UADDR64   .rodata+0x0000000000bab996
c000000001655fdd R_PPC64_UADDR64   .rodata+0x0000000000bab9a8
c000000001656013 R_PPC64_UADDR64   .rodata+0x0000000000bab9bc
c00000000165602e R_PPC64_UADDR64   .rodata+0x0000000000bab9c6
c000000001656049 R_PPC64_UADDR64   .rodata+0x0000000000bab9d1
c000000001656064 R_PPC64_UADDR64   .rodata+0x0000000000bab9dc
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c00000000165629b R_PPC64_UADDR64   .rodata+0x0000000000babab5
c0000000016562b6 R_PPC64_UADDR64   .rodata+0x0000000000babac0
c0000000016562d1 R_PPC64_UADDR64   .rodata+0x0000000000babaca
c0000000016562ec R_PPC64_UADDR64   .rodata+0x0000000000babad4
c000000001656307 R_PPC64_UADDR64   .rodata+0x0000000000babade
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c00000000165633d R_PPC64_UADDR64   .rodata+0x0000000000babaf2
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c00000000165638e R_PPC64_UADDR64   .rodata+0x0000000000babb17
c0000000016563a9 R_PPC64_UADDR64   .rodata+0x0000000000babb22
c0000000016563c4 R_PPC64_UADDR64   .rodata+0x0000000000babb2d
c0000000016563df R_PPC64_UADDR64   .rodata+0x0000000000babb38
c0000000016563fa R_PPC64_UADDR64   .rodata+0x0000000000babb43
c000000001656415 R_PPC64_UADDR64   .rodata+0x0000000000babb4e
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c000000001656466 R_PPC64_UADDR64   .rodata+0x0000000000babb6f
c000000001656481 R_PPC64_UADDR64   .rodata+0x0000000000babb7e
c00000000165649c R_PPC64_UADDR64   .rodata+0x0000000000babb18
c0000000016564b7 R_PPC64_UADDR64   .rodata+0x0000000000babb23
c0000000016564d2 R_PPC64_UADDR64   .rodata+0x0000000000babb2e
c0000000016564ed R_PPC64_UADDR64   .rodata+0x0000000000babb39
c000000001656523 R_PPC64_UADDR64   .rodata+0x0000000000babb4f
c00000000165653e R_PPC64_UADDR64   .rodata+0x0000000000babb5a
c000000001656559 R_PPC64_UADDR64   .rodata+0x0000000000babb65
WARNING: You need at least binutils >= 2.19 to build a CONFIG_RELOCATABLE kernel
Completed OK
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.9
# Build took: 0:07:21.200451