# git rev-parse -q --verify 8b817fded42d8fe3a0eb47b1149d907851a3c942^{commit}
8b817fded42d8fe3a0eb47b1149d907851a3c942
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8b817fded42d8fe3a0eb47b1149d907851a3c942
# git clean -qxdf
# < git log -1
# commit 8b817fded42d8fe3a0eb47b1149d907851a3c942
# Merge: 7a6c8e512fa0 a2d910f02231
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon May 29 07:20:13 2023 -0400
# 
#     Merge tag 'trace-v6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
#     
#     Pull tracing fixes from Steven Rostedt:
#      "User events:
#     
#        - Use long instead of int for storing the enable set/clear bit, as it
#          was found that big endian machines could end up using the wrong
#          bits.
#     
#        - Split allocating mm and attaching it. This keeps the allocation
#          separate from the registration and avoids various races.
#     
#        - Remove RCU locking around pin_user_pages_remote() as that can
#          schedule. The RCU protection is no longer needed with the above
#          split of mm allocation and attaching.
#     
#        - Rename the "link" fields of the various structs to something more
#          meaningful.
#     
#        - Add comments around user_event_mm struct usage and locking
#          requirements.
#     
#       Timerlat tracer:
#     
#        - Fix missed wakeup of timerlat thread caused by the timerlat
#          interrupt triggering when tracing is off. The timer interrupt
#          handler needs to always wake up the timerlat thread regardless if
#          tracing is enabled or not, otherwise, it will never wake up.
#     
#       Histograms:
#     
#        - Fix regression of breaking the "stacktrace" modifier for variables.
#          That modifier cannot be used for values, but can be used for
#          variables that are passed from one histogram to the next. This was
#          broken when adding the restriction to values as the variable logic
#          used the same code.
#     
#        - Rename the special field "stacktrace" to "common_stacktrace".
#     
#          Special fields (that are not actually part of the event, but can
#          act just like event fields, like 'comm' and 'timestamp') should be
#          prefixed with 'common_' for consistency. To keep backward
#          compatibility, 'stacktrace' can still be used (as with the special
#          field 'cpu'), but can be overridden if the event has a field called
#          'stacktrace'.
#     
#        - Update the synthetic event selftests to use the new name (synthetic
#          events are created by histograms)
#     
#       Tracing bootup selftests:
#     
#        - Reorganize the code to keep artifacts of the selftests not compiled
#          in when selftests are not configured.
#     
#        - Add various cond_resched() around the selftest code, as the
#          softlock watchdog was triggering much more often. It appears that
#          the kernel runs slower now with full debugging enabled.
#     
#        - While debugging ftrace with ftrace (using an instance ring buffer
#          instead of the top level one), I found that the selftests were
#          disabling prints to the debug instance.
#     
#          This should not happen, as the selftests only disable printing to
#          the main buffer as the selftests examine the main buffer to see if
#          it has what it expects, and prints can make the tests fail.
#     
#          Make the selftests only disable printing to the toplevel buffer,
#          and leave the instance buffers alone"
#     
#     * tag 'trace-v6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
#       tracing: Have function_graph selftest call cond_resched()
#       tracing: Only make selftest conditionals affect the global_trace
#       tracing: Make tracing_selftest_running/delete nops when not used
#       tracing: Have tracer selftests call cond_resched() before running
#       tracing: Move setting of tracing_selftest_running out of register_tracer()
#       tracing/selftests: Update synthetic event selftest to use common_stacktrace
#       tracing: Rename stacktrace field to common_stacktrace
#       tracing/histograms: Allow variables to have some modifiers
#       tracing/user_events: Document user_event_mm one-shot list usage
#       tracing/user_events: Rename link fields for clarity
#       tracing/user_events: Remove RCU lock while pinning pages
#       tracing/user_events: Split up mm alloc and attach
#       tracing/timerlat: Always wakeup the timerlat thread
#       tracing/user_events: Use long vs int for atomic bit ops
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 8b817fded42d8fe3a0eb47b1149d907851a3c942
# < make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-  allyesconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_KCOV=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig 
# < make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/linus_s390-allyesconfig_s390x-gcc11
# Build took: 0:19:47.598981