# git rev-parse -q --verify a816fd6b49b6b0628b968faefd49a6de4ce27066^{commit}
a816fd6b49b6b0628b968faefd49a6de4ce27066
already have revision, skipping fetch
# git checkout -q -f -B kisskb a816fd6b49b6b0628b968faefd49a6de4ce27066
# git clean -qxdf
# < git log -1
# commit a816fd6b49b6b0628b968faefd49a6de4ce27066
# Merge: 4a3164e3d7be 556a888a14af
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Apr 2 20:24:32 2019 -1000
# 
#     Merge tag 'pidfd-fixes-v5.1-rc3' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux
#     
#     Pull pidfd fix from Christian Brauner:
#      "This should be an uncontroversial fix for pidfd_send_signal() by Jann
#       to better align it's behavior with other signal sending functions:
#     
#       In one of the early versions of the patchset it was suggested to not
#       unconditionally error out when a signal with SI_USER is sent to a
#       non-current task (cf. [1]).
#     
#       Instead, pidfd_send_signal() currently silently changes this to a
#       regular kill signal. While this is technically fine, the semantics are
#       weird since the kernel just silently converts a user's request behind
#       their back and also no other signal sending function allows to do
#       this. It gets more hairy when we introduce sending signals to a
#       specific thread soon.
#     
#       So let's align pidfd_send_signal() with all the other signal sending
#       functions and error out when SI_USER signals are sent to a non-current
#       task"
#     
#     * tag 'pidfd-fixes-v5.1-rc3' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux:
#       signal: don't silently convert SI_USER signals to non-current pidfd
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-ld --version
# < git log --format=%s --max-count=1 a816fd6b49b6b0628b968faefd49a6de4ce27066
# < make -s -j 48 ARCH=parisc O=/kisskb/build/linus_a500_defconfig_parisc64 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-  a500_defconfig
# make -s -j 48 ARCH=parisc O=/kisskb/build/linus_a500_defconfig_parisc64 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
In file included from /kisskb/src/arch/parisc/include/asm/atomic.h:10,
                 from /kisskb/src/include/linux/atomic.h:7,
                 from /kisskb/src/arch/parisc/include/asm/bitops.h:13,
                 from /kisskb/src/include/linux/bitops.h:19,
                 from /kisskb/src/include/linux/kernel.h:12,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/module.h:9,
                 from /kisskb/src/drivers/scsi/scsi_debug.c:23:
/kisskb/src/drivers/scsi/scsi_debug.c: In function 'resp_start_stop':
/kisskb/src/arch/parisc/include/asm/cmpxchg.h:48:3: warning: value computed is not used [-Wunused-value]
  ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
/kisskb/src/arch/parisc/include/asm/atomic.h:78:30: note: in expansion of macro 'xchg'
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
                              ^~~~
/kisskb/src/drivers/scsi/scsi_debug.c:1623:2: note: in expansion of macro 'atomic_xchg'
  atomic_xchg(&devip->stopped, stop);
  ^~~~~~~~~~~
Completed OK
# rm -rf /kisskb/build/linus_a500_defconfig_parisc64
# Build took: 0:01:21.682798