# git rev-parse -q --verify 7f2444d38f6bbfa12bc15e2533d8f9daa85ca02b^{commit}
7f2444d38f6bbfa12bc15e2533d8f9daa85ca02b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7f2444d38f6bbfa12bc15e2533d8f9daa85ca02b
# git clean -qxdf
# < git log -1
# commit 7f2444d38f6bbfa12bc15e2533d8f9daa85ca02b
# Merge: c5f12fdb8bd8 77b4b5420422
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Sep 17 12:35:15 2019 -0700
# 
#     Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull core timer updates from Thomas Gleixner:
#      "Timers and timekeeping updates:
#     
#        - A large overhaul of the posix CPU timer code which is a preparation
#          for moving the CPU timer expiry out into task work so it can be
#          properly accounted on the task/process.
#     
#          An update to the bogus permission checks will come later during the
#          merge window as feedback was not complete before heading of for
#          travel.
#     
#        - Switch the timerqueue code to use cached rbtrees and get rid of the
#          homebrewn caching of the leftmost node.
#     
#        - Consolidate hrtimer_init() + hrtimer_init_sleeper() calls into a
#          single function
#     
#        - Implement the separation of hrtimers to be forced to expire in hard
#          interrupt context even when PREEMPT_RT is enabled and mark the
#          affected timers accordingly.
#     
#        - Implement a mechanism for hrtimers and the timer wheel to protect
#          RT against priority inversion and live lock issues when a (hr)timer
#          which should be canceled is currently executing the callback.
#          Instead of infinitely spinning, the task which tries to cancel the
#          timer blocks on a per cpu base expiry lock which is held and
#          released by the (hr)timer expiry code.
#     
#        - Enable the Hyper-V TSC page based sched_clock for Hyper-V guests
#          resulting in faster access to timekeeping functions.
#     
#        - Updates to various clocksource/clockevent drivers and their device
#          tree bindings.
#     
#        - The usual small improvements all over the place"
#     
#     * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (101 commits)
#       posix-cpu-timers: Fix permission check regression
#       posix-cpu-timers: Always clear head pointer on dequeue
#       hrtimer: Add a missing bracket and hide `migration_base' on !SMP
#       posix-cpu-timers: Make expiry_active check actually work correctly
#       posix-timers: Unbreak CONFIG_POSIX_TIMERS=n build
#       tick: Mark sched_timer to expire in hard interrupt context
#       hrtimer: Add kernel doc annotation for HRTIMER_MODE_HARD
#       x86/hyperv: Hide pv_ops access for CONFIG_PARAVIRT=n
#       posix-cpu-timers: Utilize timerqueue for storage
#       posix-cpu-timers: Move state tracking to struct posix_cputimers
#       posix-cpu-timers: Deduplicate rlimit handling
#       posix-cpu-timers: Remove pointless comparisons
#       posix-cpu-timers: Get rid of 64bit divisions
#       posix-cpu-timers: Consolidate timer expiry further
#       posix-cpu-timers: Get rid of zero checks
#       rlimit: Rewrite non-sensical RLIMIT_CPU comment
#       posix-cpu-timers: Respect INFINITY for hard RTTIME limit
#       posix-cpu-timers: Switch thread group sampling to array
#       posix-cpu-timers: Restructure expiry array
#       posix-cpu-timers: Remove cputime_expires
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 7f2444d38f6bbfa12bc15e2533d8f9daa85ca02b
# < make -s -j 120 ARCH=arm O=/kisskb/build/linus_iop13xx_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  iop13xx_defconfig
***
*** Can't find default configuration "arch/arm/configs/iop13xx_defconfig"!
***
make[2]: *** [/kisskb/src/scripts/kconfig/Makefile:90: iop13xx_defconfig] Error 1
make[1]: *** [/kisskb/src/Makefile:562: iop13xx_defconfig] Error 2
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 120 ARCH=arm O=/kisskb/build/linus_iop13xx_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  iop13xx_defconfig' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_iop13xx_defconfig_arm
# Build took: 0:00:01.514634