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Historically, we have used several APIs (perfctr, libcpc, perf_event_open) for profiling.
For each hardware we have several tables of hardware counters.
Some information is duplicated in these tables.
Some of the information is no longer used.
I did not touch the existing hwc tables.
I added a new hwc table for an AMD Zen3 machine.
ChangeLog
2024-05-16 Vladimir Mezentsev <vladimir.mezentsev@oracle.com>
PR gprofng/31123
* common/core_pcbe.c (core_pcbe_get_events): Add new argument.
* common/hwc_cpus.h: New constants for AMD hardware.
* common/hwcdrv.c: Add new argument to hwcdrv_get_descriptions.
Clean up the code.
* common/hwcdrv.h: Likewise.
* common/hwcfuncs.c (hwcdrv_get_descriptions): Add new argument.
* common/hwctable.c: Add the hwc table for AMD Zen3.
* src/hwc_amd_zen3.h: New file.
* common/opteron_pcbe.c: Add new argument to opt_pcbe_get_events.
* src/collctrl.cc: Remove unused variable.
* src/collctrl.h: Likewise.
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Our hardware counter profiling is based on perf_event_open().
Our HWC tables are absent for new machines.
I have added HWC tables for the following events: PERF_TYPE_HARDWARE,
PERF_TYPE_SOFTWARE, PERF_TYPE_HW_CACHE. Other events require additional fixes.
Did a little cleaning: marked the symbols as static, used Stringbuilder,
created a function to read /proc/cpuinfo.
gprofng/ChangeLog
2024-01-08 Vladimir Mezentsev <vladimir.mezentsev@oracle.com>
PR gprofng/31123
* common/core_pcbe.c: Mark the symbols as static. Add events_generic[].
* common/hwc_cpus.h: Declare a new function read_cpuinfo.
* common/hwcdrv.c: Add a new parameter in init_perf_event().
* common/hwcentry.h: Add use_perf_event_type in Hwcentry.
* common/hwcfuncs.c (process_data_descriptor): Read use_perf_event_type,
type, config.
* common/hwctable.c: Add a new HWC table generic_list[].
* common/opteron_pcbe.c (opt_pcbe_init): Accept AMD machines.
* src/collctrl.cc: Use StringBuilder in Coll_Ctrl::build_data_desc().
Add a new function read_cpuinfo.
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Adds two new external authors to etc/update-copyright.py to cover
bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then
updates copyright messages as follows:
1) Update cgen/utils.scm emitted copyrights.
2) Run "etc/update-copyright.py --this-year" with an extra external
author I haven't committed, 'Kalray SA.', to cover gas testsuite
files (which should have their copyright message removed).
3) Build with --enable-maintainer-mode --enable-cgen-maint=yes.
4) Check out */po/*.pot which we don't update frequently.
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This adds 'Innovative Computing Labs' as an external author to
update-copyright.py, to cover the copyright notice in
gprofng/common/opteron_pcbe.c, and uses that plus another external
author 'Oracle and' to update gprofng copyright dates. I'm not going
to commit 'Oracle and' as an accepted author, but that covers the
string "Copyright (c) 2006, 2012, Oracle and/or its affiliates. All
rights reserved." found in gprofng/testsuite/gprofng.display/jsynprog
files.
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top-level
* Makefile.def: Add gprofng module.
* configure.ac: Add --enable-gprofng option.
* src-release.sh: Add gprofng.
* Makefile.in: Regenerate.
* configure: Regenerate.
* gprofng: New directory.
binutils
* MAINTAINERS: Add gprofng maintainer.
* README-how-to-make-a-release: Add gprofng.
include.
* collectorAPI.h: New file.
* libcollector.h: New file.
* libfcollector.h: New file.
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