CVS commit: src

["Ryo Shimizu" <ryo%netbsd.org@localhost>]

Module Name:    src
Committed By:   ryo
Date:           Thu Dec  1 00:32:52 UTC 2022

Modified Files:
        src/sys/arch/aarch64/include: armreg.h
        src/sys/dev/tprof: tprof.c tprof.h tprof_armv7.c tprof_armv8.c
            tprof_ioctl.h tprof_types.h tprof_x86.c tprof_x86_amd.c
            tprof_x86_intel.c
        src/usr.sbin/tprof: tprof.8 tprof.c tprof_analyze.c

Log Message:
Improve tprof(4)

- Multiple events can now be handled simultaneously.
- Counters should be configured with TPROF_IOC_CONFIGURE_EVENT in advance,
  instead of being configured at TPROF_IOC_START.
- The configured counters can be started and stopped repeatedly by
  PROF_IOC_START/TPROF_IOC_STOP.
- The value of the performance counter can be obtained at any timing as a 64bit
  value with TPROF_IOC_GETCOUNTS.
- Backend common parts are handled in tprof.c as much as possible, and functions
  on the tprof_backend side have been reimplemented to be more primitive.
- The reset value of counter overflows for profiling can now be adjusted.
  It is calculated by default from the CPU clock (speed of cycle counter) and
  TPROF_HZ, but for some events the value may be too large to be sufficient for
  profiling. The event counter can be specified as a ratio to the default or as
  an absolute value when configuring the event counter.
- Due to overall changes, API and ABI have been changed. TPROF_VERSION and
  TPROF_BACKEND_VERSION were updated.


To generate a diff of this commit:
cvs rdiff -u -r1.62 -r1.63 src/sys/arch/aarch64/include/armreg.h
cvs rdiff -u -r1.18 -r1.19 src/sys/dev/tprof/tprof.c
cvs rdiff -u -r1.6 -r1.7 src/sys/dev/tprof/tprof.h
cvs rdiff -u -r1.9 -r1.10 src/sys/dev/tprof/tprof_armv7.c
cvs rdiff -u -r1.17 -r1.18 src/sys/dev/tprof/tprof_armv8.c
cvs rdiff -u -r1.4 -r1.5 src/sys/dev/tprof/tprof_ioctl.h \
    src/sys/dev/tprof/tprof_x86_intel.c
cvs rdiff -u -r1.5 -r1.6 src/sys/dev/tprof/tprof_types.h \
    src/sys/dev/tprof/tprof_x86_amd.c
cvs rdiff -u -r1.1 -r1.2 src/sys/dev/tprof/tprof_x86.c
cvs rdiff -u -r1.16 -r1.17 src/usr.sbin/tprof/tprof.8
cvs rdiff -u -r1.13 -r1.14 src/usr.sbin/tprof/tprof.c
cvs rdiff -u -r1.5 -r1.6 src/usr.sbin/tprof/tprof_analyze.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.