File: ChangeLogP420.txt

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2011-10-25

	* doc/: Makefile, doxygen_procedure.txt: Update doxygen_procedure
	  to note that we need a recent version of doxygen.

	* man/: man1/avail.c.1, man1/clockres.c.1, man1/command_flags_t.1,
	  man1/command_line.c.1, man1/component.c.1, man1/cost.c.1,
	  man1/decode.c.1, man1/error_codes.c.1, man1/event_chooser.c.1,
	  man1/mem_info.c.1, man1/native_avail.c.1, man1/options_t.1,
	  man1/papi_avail.1, man1/papi_clockres.1,
	  man1/papi_command_line.1, man1/papi_component_avail.1,
	  man1/papi_cost.1, man1/papi_decode.1, man1/papi_error_codes.1,
	  man1/papi_event_chooser.1, man1/papi_mem_info.1,
	  man1/papi_multiplex_cost.1, man1/papi_native_avail.1, man3/CDI.3,
	  man3/HighLevelInfo.3, man3/PAPIF.3, man3/PAPIF_accum.3,
	  man3/PAPIF_accum_counters.3, man3/PAPIF_add_event.3,
	  man3/PAPIF_add_events.3, man3/PAPIF_assign_eventset_component.3,
	  man3/PAPIF_cleanup_eventset.3, man3/PAPIF_create_eventset.3,
	  man3/PAPIF_destroy_eventset.3, man3/PAPIF_enum_event.3,
	  man3/PAPIF_event_code_to_name.3, man3/PAPIF_event_name_to_code.3,
	  man3/PAPIF_flips.3, man3/PAPIF_flops.3,
	  man3/PAPIF_get_clockrate.3, man3/PAPIF_get_dmem_info.3,
	  man3/PAPIF_get_domain.3, man3/PAPIF_get_event_info.3,
	  man3/PAPIF_get_exe_info.3, man3/PAPIF_get_granularity.3,
	  man3/PAPIF_get_hardware_info.3, man3/PAPIF_get_multiplex.3,
	  man3/PAPIF_get_preload.3, man3/PAPIF_get_real_cyc.3,
	  man3/PAPIF_get_real_nsec.3, man3/PAPIF_get_real_usec.3,
	  man3/PAPIF_get_virt_cyc.3, man3/PAPIF_get_virt_usec.3,
	  man3/PAPIF_ipc.3, man3/PAPIF_is_initialized.3,
	  man3/PAPIF_library_init.3, man3/PAPIF_lock.3,
	  man3/PAPIF_multiplex_init.3, man3/PAPIF_num_cmp_hwctrs.3,
	  man3/PAPIF_num_counters.3, man3/PAPIF_num_events.3,
	  man3/PAPIF_num_hwctrs.3, man3/PAPIF_perror.3,
	  man3/PAPIF_query_event.3, man3/PAPIF_read.3,
	  man3/PAPIF_read_ts.3, man3/PAPIF_register_thread.3,
	  man3/PAPIF_remove_event.3, man3/PAPIF_remove_events.3,
	  man3/PAPIF_reset.3, man3/PAPIF_set_cmp_domain.3,
	  man3/PAPIF_set_cmp_granularity.3, man3/PAPIF_set_debug.3,
	  man3/PAPIF_set_domain.3, man3/PAPIF_set_event_domain.3,
	  man3/PAPIF_set_granularity.3, man3/PAPIF_set_inherit.3,
	  man3/PAPIF_set_multiplex.3, man3/PAPIF_shutdown.3,
	  man3/PAPIF_start.3, man3/PAPIF_start_counters.3,
	  man3/PAPIF_state.3, man3/PAPIF_stop.3,
	  man3/PAPIF_stop_counters.3, man3/PAPIF_thread_id.3,
	  man3/PAPIF_thread_init.3, man3/PAPIF_unlock.3,
	  man3/PAPIF_unregister_thread.3, man3/PAPIF_write.3,
	  man3/PAPI_accum.3, man3/PAPI_accum_counters.3,
	  man3/PAPI_add_event.3, man3/PAPI_add_events.3,
	  man3/PAPI_addr_range_option_t.3, man3/PAPI_address_map_t.3,
	  man3/PAPI_all_thr_spec_t.3,
	  man3/PAPI_assign_eventset_component.3, man3/PAPI_attach.3,
	  man3/PAPI_attach_option_t.3, man3/PAPI_cleanup_eventset.3,
	  man3/PAPI_component_info_t.3, man3/PAPI_cpu_option_t.3,
	  man3/PAPI_create_eventset.3, man3/PAPI_debug_option_t.3,
	  man3/PAPI_descr_error.3, man3/PAPI_destroy_eventset.3,
	  man3/PAPI_detach.3, man3/PAPI_dmem_info_t.3,
	  man3/PAPI_domain_option_t.3, man3/PAPI_enum_event.3,
	  man3/PAPI_event_code_to_name.3, man3/PAPI_event_info_t.3,
	  man3/PAPI_event_name_to_code.3, man3/PAPI_exe_info_t.3,
	  man3/PAPI_flips.3, man3/PAPI_flops.3, man3/PAPI_get_cmp_opt.3,
	  man3/PAPI_get_component_info.3, man3/PAPI_get_dmem_info.3,
	  man3/PAPI_get_event_info.3, man3/PAPI_get_executable_info.3,
	  man3/PAPI_get_hardware_info.3, man3/PAPI_get_multiplex.3,
	  man3/PAPI_get_opt.3, man3/PAPI_get_overflow_event_index.3,
	  man3/PAPI_get_real_cyc.3, man3/PAPI_get_real_nsec.3,
	  man3/PAPI_get_real_usec.3, man3/PAPI_get_shared_lib_info.3,
	  man3/PAPI_get_thr_specific.3, man3/PAPI_get_virt_cyc.3,
	  man3/PAPI_get_virt_nsec.3, man3/PAPI_get_virt_usec.3,
	  man3/PAPI_granularity_option_t.3, man3/PAPI_hw_info_t.3,
	  man3/PAPI_inherit_option_t.3, man3/PAPI_ipc.3,
	  man3/PAPI_is_initialized.3, man3/PAPI_itimer_option_t.3,
	  man3/PAPI_library_init.3, man3/PAPI_list_events.3,
	  man3/PAPI_list_threads.3, man3/PAPI_lock.3,
	  man3/PAPI_mh_cache_info_t.3, man3/PAPI_mh_info_t.3,
	  man3/PAPI_mh_level_t.3, man3/PAPI_mh_tlb_info_t.3,
	  man3/PAPI_mpx_info_t.3, man3/PAPI_multiplex_init.3,
	  man3/PAPI_multiplex_option_t.3, man3/PAPI_num_cmp_hwctrs.3,
	  man3/PAPI_num_components.3, man3/PAPI_num_counters.3,
	  man3/PAPI_num_events.3, man3/PAPI_num_hwctrs.3,
	  man3/PAPI_option_t.3, man3/PAPI_overflow.3, man3/PAPI_perror.3,
	  man3/PAPI_preload_info_t.3, man3/PAPI_profil.3,
	  man3/PAPI_query_event.3, man3/PAPI_read.3,
	  man3/PAPI_read_counters.3, man3/PAPI_read_ts.3,
	  man3/PAPI_register_thread.3, man3/PAPI_remove_event.3,
	  man3/PAPI_remove_events.3, man3/PAPI_reset.3,
	  man3/PAPI_set_cmp_domain.3, man3/PAPI_set_cmp_granularity.3,
	  man3/PAPI_set_debug.3, man3/PAPI_set_domain.3,
	  man3/PAPI_set_granularity.3, man3/PAPI_set_multiplex.3,
	  man3/PAPI_set_opt.3, man3/PAPI_set_thr_specific.3,
	  man3/PAPI_shlib_info_t.3, man3/PAPI_shutdown.3,
	  man3/PAPI_sprofil.3, man3/PAPI_sprofil_t.3, man3/PAPI_start.3,
	  man3/PAPI_start_counters.3, man3/PAPI_state.3, man3/PAPI_stop.3,
	  man3/PAPI_stop_counters.3, man3/PAPI_strerror.3,
	  man3/PAPI_thread_id.3, man3/PAPI_thread_init.3,
	  man3/PAPI_unlock.3, man3/PAPI_unregister_thread.3,
	  man3/PAPI_write.3, man3/high_api.3, man3/low_api.3,
	  man3/papi_data_structures.3, man3/papi_vector_t.3,
	  man3/ret_codes.3: Update doxygen generated man-pages for the
	  pending release.

	  In the future, we need to use a newer version of doxygen to
	  generate the pages (1.7 +) because locally installed verions
	  appear to have a  bug.

	* src/ctests/nmi_watchdog.c: The nmi_watchdog test should report a
	  Warning if nmi_watchdog is enabled   not an error.  (Since we do
	  work around it, even if performance is   likely impacted).

	* src/ctests/: Makefile, nmi_watchdog.c: I think the nmi_watchdog
	  stuff is going to cause us problems down the road.

	  Thus add a test that will tell users about the issue.

	* src/perf_events.c: The nmi_watchdog workaround is needed for
	  multiplexing too.

	  The kernel devs don't seem eager to fix this.  Until they do,
	  we'll have to fall back to software multiplexing on recent
	  kernels that have nmi_watchdog enabled (most vendor kernels).

	* src/multiplex.c: Yesterday's coverity fix to make sure the
	  cleanup and destroy rerturn values were checked ended up
	  over-writing "retval" in a way that broke the sdsc4-mpx test.
	  Fix things so that doesn't happen.

	* src/: papi.c, perf_events.c, ctests/overflow_allcounters.c: Some
	  changes for perf_event MIPS support

	  + Add __mips__ cases to the format_group, schedulability, and
	  broken   multiplexing bug workarounds, as even new Linux mips
	  kernels have	 these bugs + fix overflow_allcounters to work
	  properly if the MHz value   is zero.	+ Add some debugging to
	  PAPI_overflow() so that errors are more obvious   than just
	  returning PAPI_EINVAL, which made the previous item	a pain to
	  track down.

	* man/: footer.htm, header.htm, manServer_papi.pl, papiman.bat,
	  html/papi.html, html/papi_accum.html,
	  html/papi_accum_counters.html, html/papi_add_event.html,
	  html/papi_add_events.html,
	  html/papi_assign_eventset_component.html, html/papi_attach.html,
	  html/papi_avail.html, html/papi_cleanup_eventset.html,
	  html/papi_clockres.html, html/papi_command_line.html,
	  html/papi_cost.html, html/papi_create_eventset.html,
	  html/papi_decode.html, html/papi_destroy_eventset.html,
	  html/papi_detach.html, html/papi_encode_events.html,
	  html/papi_enum_event.html, html/papi_event_chooser.html,
	  html/papi_event_code_to_name.html,
	  html/papi_event_name_to_code.html, html/papi_flips.html,
	  html/papi_flops.html, html/papi_get_component_info.html,
	  html/papi_get_dmem_info.html, html/papi_get_event_info.html,
	  html/papi_get_executable_info.html,
	  html/papi_get_hardware_info.html, html/papi_get_multiplex.html,
	  html/papi_get_opt.html, html/papi_get_overflow_event_index.html,
	  html/papi_get_real_cyc.html, html/papi_get_real_usec.html,
	  html/papi_get_shared_lib_info.html,
	  html/papi_get_substrate_info.html,
	  html/papi_get_thr_specific.html, html/papi_get_virt_cyc.html,
	  html/papi_get_virt_usec.html, html/papi_help.html,
	  html/papi_ipc.html, html/papi_is_initialized.html,
	  html/papi_library_init.html, html/papi_list_events.html,
	  html/papi_list_threads.html, html/papi_lock.html,
	  html/papi_mem_info.html, html/papi_multiplex_init.html,
	  html/papi_native.html, html/papi_native_avail.html,
	  html/papi_num_cmp_hwctrs.html, html/papi_num_components.html,
	  html/papi_num_counters.html, html/papi_num_events.html,
	  html/papi_num_hwctrs.html, html/papi_overflow.html,
	  html/papi_perror.html, html/papi_presets.html,
	  html/papi_profil.html, html/papi_query_event.html,
	  html/papi_read.html, html/papi_read_counters.html,
	  html/papi_register_thread.html, html/papi_remove_event.html,
	  html/papi_remove_events.html, html/papi_reset.html,
	  html/papi_set_cmp_domain.html,
	  html/papi_set_cmp_granularity.html, html/papi_set_debug.html,
	  html/papi_set_domain.html, html/papi_set_event_info.html,
	  html/papi_set_granularity.html, html/papi_set_multiplex.html,
	  html/papi_set_opt.html, html/papi_set_thr_specific.html,
	  html/papi_shutdown.html, html/papi_sprofil.html,
	  html/papi_start.html, html/papi_start_counters.html,
	  html/papi_state.html, html/papi_stop.html,
	  html/papi_stop_counters.html, html/papi_strerror.html,
	  html/papi_thread_id.html, html/papi_thread_init.html,
	  html/papi_unlock.html, html/papi_unregister_thread.html,
	  html/papi_write.html, html/papif.html,
	  html/papif_get_clockrate.html, html/papif_get_domain.html,
	  html/papif_get_exe_info.html, html/papif_get_granularity.html,
	  html/papif_get_preload.html, html/papif_set_event_domain.html,
	  images/cssigoff.gif, images/cssigon.gif, images/headertop.jpg,
	  images/line.gif, images/logobottom.jpg, images/logoleft.jpg,
	  images/menubg.jpg, images/menubg95.jpg, images/rd.jpg,
	  images/spinbg.jpg, images/spinlogo.gif, images/stable.gif,
	  images/stripes2.jpg, images/trans.gif, images/utsigoff.gif,
	  images/utsigon.gif, images/white.jpg: Remove the old html
	  documentation and assorted helper files.

	* src/components/coretemp/linux-coretemp.c: Fix a possible
	  directory stream leak in the coretemp component.

	  reported by coverity checker.

	* src/ctests/calibrate.c: Properly free the arrays in calibrate,
	  introduced by yesterdays coverity fix.

	  Patch by Will Cohen


2011-10-24

	* src/components/coretemp/linux-coretemp.c: Fix coretemp to not
	  fail if /sys/class/hwmon doesn't exist.

	* src/components/coretemp/linux-coretemp.c: Patch coretemp to only
	  free the initialized data in shutdown_substrate (once per
	  PAPI_init) rather than shutdown (once per thread).

	  This was causing double free errors.

	  Patch from Will Cohen

	* src/utils/multiplex_cost.c: Fix various calls to PAPI_start() and
	  PAPI_stop() in multiplex_cost that didn't check the return value.
	  Took care to try to avoid changing timing measurements.  Noticed
	  by coverity checker.

	* src/utils/cost.c: In one case, cost was not checking the return
	  of PAPI_start()/PAPI_stop().	This change makes it does so, while
	  being careful not to interfere with the timing that is going on.

	* src/ctests/: pthrtough.c, pthrtough2.c: pthrtough and pthrtough2
	  were not checking the return value for pthread_attr_setscope().
	  Reported by coverity checker.

	* src/ctests/multiplex1_pthreads.c: multiplex1_pthreads was not
	  checking the return from PAPI_library_init() as flagged by
	  coverity checker.

	* src/ctests/inherit.c: inherit.c wasn't checking the result of the
	  waitpid() call, as reported by coverity checker.

	* src/ctests/clockres_pthreads.c: Check the return of
	  pthread_create().

	  Reported by coverity checker.

	* src/papi_libpfm4_events.c: Fix an actual bug (reported as
	  deadcode by coverity) where _papi_hwd_ntv_code_to_descr was
	  appending extraneous ", masks:" strings into an event
	  description.

	  None of our utils/ctests exercise this function, which is
	  probably why the bug wasn't noticed.

	* src/: multiplex.c, papi.c: Fix cases where PAPI_*() functions
	  were called without checking the return for an error.

	  Reported by coverity.

	* doc/Doxyfile.utils: Update version to 4.2.0 for pending release.

	* src/multiplex.c: Fix some code that could potentially dereference
	  a null pointer.

	  Found by the coverity checker.

	* src/papi_vector.c: Remove a dead code case as reported by
	  coverity.  Shouldn't break anything as I can't find anywhere that
	  vector_print_table() is actually called.

	* release_procedure.txt: Update release_procedure to reflect
	  another file that needs a version number bump. (Doxyfile.utils)

	* src/ctests/calibrate.c: Fix some weird code that was sharing a
	  memory allocation for both double and floats.  This was really
	  ugly and made the coverity checker sad.

	  Patch provided by Will Cohen.

	* src/testlib/test_utils.c: Fix a signed/unsigned comparison bug I
	  introduced.

	* src/components/coretemp/tests/coretemp_basic.c: Fix the test so
	  it correctly iterates all of the components.

	* src/components/coretemp/: linux-coretemp.c, tests/Makefile,
	  tests/coretemp_basic.c: Fix a potential memory leak in coretemp
	  (flagged by coverity).

	  Also added a test case for coretemp so I can actually test if
	  these changes are breaking anything.

	* src/solaris-ultra.c: Remove const decleration from get_virt_* in
	  solaris substrate.  Vince removed this from papi_vector.h back in
	  June.

	* src/testlib/test_utils.c: Improce the add_two_events() code in
	  the test library.  Before it was possible to overrun a buffer if
	  none of the potential predefined events were available.

	  Noticed by the coverity checker.

	* papi.spec, doc/Doxyfile, doc/Doxyfile-everything, src/configure,
	  src/papi.h, src/Makefile.in, src/configure.in: Update version to
	  4.2.0 for pending release.

2011-10-21

	* src/: Makefile.inc, configure, configure.in, papi.c, papi.h,
	  papi_internal.c, papi_user_events.c, papi_user_events.h: Merge in
	  the user events code , protected by a configure option.  (
	  --with-user-events )

	* src/testlib/test_utils.c: We now ensure that test_fail() always
	  exits.  There was some code around that tracked the number of
	  times test_fail() was called.  Remove that, as I think it was
	  confusing the coverity checker and causing a huge number of false
	  positives for NULL pointer dereferences.

	* src/components/acpi/linux-acpi.c: Some minor cleanups to the acpi
	  component.  It was choking a bit if ACPI didn't provide thermal
	  information, and also fix a few coverity bugs involving not
	  checking the result of a dup() call.

	* src/testlib/test_utils.c: Another problem with negative numbers,
	  this time one could potentially be passed to a malloc call.

	  noticed by coverity

	* src/ctests/overflow_pthreads.c: We were indexing an array with a
	  returned value that could be negative on failure.  Add a check to
	  avoid that.

	  We're also indexing a per-thread array with an EventSet number,
	  which sounds suspect, should probably investigate that further.

	* src/perf_events.c: perf_events.c was setting variables to -1 and
	  then potentially using them to index arrays or call close() on
	  them.

	  This adds checks to avoid that.

	  Noticed by the coverity checker.

	* src/components/lustre/linux-lustre.h: Include stdint.h and
	  ctype.h; needed for uint64_t and isspace() respectivly.

	* src/components/coretemp/linux-coretemp.c: Fix problem where we
	  try to manipulate a NULL directory entry.

	  This fixes a segfault on a Nehalem machine we have here that has
	  a /sys/class/hwmon/hwmon0 directory without a "device"
	  subdirectory.

	* src/components/coretemp/linux-coretemp.c: We were opening a file
	  but not checking for failure before reading from it.

	  Flagged by the coverity checker.

	* src/components/coretemp/linux-coretemp.c: Both gcc and coverity
	  were complaining about using an uninitialized pointer.  This
	  makes sure it's not dereferenced if not initialized.

	* src/ctests/prof_utils.c: Stop doing unnecessary pointer math in a
	  print statement.

	  This was flagged as a problem by the coverity tool.

	* src/components/coretemp/linux-coretemp.c: Fix some wrong buffer
	  sizes in the coretemp component.

	  Patch from Will Cohen

	* src/ctests/sdsc.c: add some extra debug info for sdsc test
	  failures.

	* src/papi_hl.c: Add comment to PAPI_num_counters() documentation
	  about use of PAPI_num_cmp_hwctrs() for component counters.

2011-10-19

	* src/papi.c: Correct documentation errors for PAPI_strerror.

	* src/: configure, configure.in: Under a no-cpu-counters build,
	  still build all of the utils.  We probably want to rethink some
	  of the cost util details.

2011-10-11

	* src/run_tests.sh: Remove an unneeded call to "cat".  For some
	  reason it was printing pointless warnings that needlessly
	  cluttered the buildbot logs.

	* src/ctests/: Makefile, multiplex1.c: -lpapi should never be a
	  dependency.  -I.. is missing in makefile

	  You should be able to cd ctests and do: make <test> or make
	  multiplex.

	  Also, added the read after start multiplex case for multiplex1.
	  This triggers bugs in perf_events systems.

2011-10-10

	* src/: papi.c, papi_internal.c, threads.c: The multiplex1_pthreads
	  test was reporting a memory leak.

	  This is because the test was calling PAPI_unregister_thread()
	  without destroying its EventSets.

	  This added change adds code that at unregister_thread time will
	  destroy any events belonging to that thread.

	  This works on all the current ctests but I should check some of
	  the various corner cases not currently tested.

2011-10-07

	* src/libpfm4/: config.mk, lib/pfmlib_amd64.c, lib/pfmlib_common.c,
	  lib/pfmlib_intel_x86.c, lib/events/intel_nhm_events.h,
	  lib/events/intel_wsm_events.h: Merge the "conflicts" from the
	  libpfm4 merge

	* src/: threads.c, threads.h: Fix the MEMORY LEAK errors involving
	  the attach ctests (as seen on buildbot)

	  These came about when proper multiattach support was added.  A
	  "fake" thread structure is created for each attached process.
	  These fake thread structures were not being cleaned up at
	  shutdown,   hence the leak.

	  This fix adds support so at thread shutdown, if we have any
	  "fake" threads that we created, also shut them down too.

	  This was tricky, especially dealing with the circular-linked list
	    the thread info structs are in.  This fix seems to work without
	    negatively affecting the pthread cases.

	  ctests/multiplex1_pthreads still reports MEMORY LEAK but that
	  seems   to be an eventset issue, not a thread issue, so will be
	  investigated	 separately.

2011-10-06

	* src/: papi.h, papi_fwrappers.c: Add Fortran reference to  doxygen
	  main page.

2011-10-05

	* src/: papi.c, papi_internal.c, perf_events.c: There has been some
	  ongoing speculation about what would happen if you enabled
	  Multiplexing and Overflow at the same time.

	  It turns out (at least on perf_events) that if you have kernel
	  multiplexing, the results are what you expect.  You get
	  overflows, but less than in the non-multiplexing case because the
	  overflow counter isn't being run all the time.

	  The results for software multiplexing involved a segfault.  This
	  is because in the software multiplexing case the primary EventSet
	  is a fiction; a set of shadow EventSets are created behind the
	  scene, and these are the ones used.  Therefore when you enable
	  overflow, the overflow event is attempted to be enabled on the
	  fictious main EventSet.  There are no native events mapped for
	  it, so overflow tries to access native event array index "-1"
	  which causes bad things to happen.

	  This change avoids the issue by catching the "-1" case and
	  failing accordingly.	We should probably decide if we want to
	  catch the oflo/mpx combination earlier and outright ban it.

	  I also went through a lot of the code involved adding comments,
	  as it was really hard following what was going on.  This involved
	  the infamously dense "_papi_hwi_remap_event_position()" function
	  too.

	* src/papi.h: Moved cpu and inherit bits to end of structure for
	  compat across all 4.x lines.	Found by Will Cohen.

	  As it turns out, I ended up reviewing the CPU_ATTACH changes; I
	  had not done so before. This functionality actually belongs in
	  PAPI_set_granularity. A CPU is a natural unit of granularity of
	  counting, and that value was speced in papi.h a long time ago.
	  Right thing to do here is leave the current attach stuff but make
	  it work as part of set_granularity.

	  Consider that a TODO for 4.3.

2011-10-04

	* doc/: Doxyfile, Doxyfile-everything: Enable macro expansion in
	  the doxygen preprocessor step.

	  Doxygen was not creating docs for the fortran functions and I
	  believe it is because it was silently choking on our clever
	  preprocessor abuse; this fixes? that.  However, its worth taking
	  a critical eye to the generated pages again.

	* src/: papi.c, papi_fwrappers.c, papi_hl.c: make "* #include" into
	  "* \#include" so doxygen doesn't treat it as a command.

	* src/papi_fwrappers.c: Added all doxygen stubs to the PAPIF group.

2011-10-03

	* src/ctests/ipc.c: My previous "fix" for the array bounds issue in
	  ipc.c had multiple embarassing bugs.

	  Thanks to Will Cohen for noticing.  Things should be better now.

	* src/: Rules.perfctr-pfm, Rules.pfm_pe: Additionally remove the
	  now extraneous papi_libpfm_preset definition from the other Rules
	  files too.

	* src/: Makefile.inc, Rules.pfm4_pe: The change to make the preset
	  code generic accidentally ended up defining the build rules for
	  the file in duplicate places.  This fixes that.

2011-09-30

	* src/: linux-common.c, utils/decode.c: Fix two unused variable
	  warnings.

	* src/ctests/second.c: We were allocating the "values" array but
	  never freeing it.

	* src/ctests/: sdsc2.c, sdsc4.c: The SDSC tests could walk off the
	  end of an array.

	* src/ctests/overflow_twoevents.c: We could potentially access
	  outside an array boundary in overflow_twoevents.

	* src/ctests/ipc.c: ipc was also abusing array boundaries.

	* src/ctests/flops.c: The flops.c ctest was abusing the notion of C
	  arrays, by writing INDEX*INDEX values to mresult[0][i], I suppose
	  "knowing" that this would fill in the whole array.  Fix things to
	  use an additional iterator.

	* src/ctests/byte_profile.c: The coverity checker rightly points
	  out that the last argument to strncat should be buffersize-1.

	* src/ctests/: exeinfo.c, shlib.c: Coverity flagged that there were
	  some tests that had no effect. In particular the are tests that
	  the pointers are non-null. However, they are arrays rather than
	  pointers. This patch make it clear that arrays are being used in
	  the code.

	  Patch from Will Cohen at redhat

	* src/ctests/clockcore.c: This is a relatively minor patch that
	  ensures that all the allocated memory is initialized to zero
	  before it is used.  Coverity might not be smart enough to
	  determine whether the test actually wrote into all the locations
	  because of the case statement. This is make it easier for
	  coverity to determine that the memory has been initialized.

	  Path from Will Cohen at redhat.

	* src/multiplex.c: Coverity scan showed that MPX_cleanup() function
	  was blindly accessing a value through a pointer and then checking
	  to see that the pointer was null.  This patch makes sure that the
	  pointer is checked before it is used.

	  Patch from Will Cohen at redhat.

	* src/ctests/: pthrtough.c, pthrtough2.c: Coverity found that the
	  sizeof argument for pthrtough2.c and pthrtough.c was using
	  sizeof(pthread *) rather than sizeof(pthread). This patch fixes
	  that problem.

	  Patch from Will Cohen at redhat

	* src/papi_internal.c: This change moves the setting for default
	  domain to be enforced at eventset add time, rather than eventset
	  creation time.

	  This fixes some problems seen when multiplexing.

	  The patch was provided by Phil Mucci.

	* src/pmapi-ppc64.h: One more file that is no longer needed.

	* src/: configure, configure.in, perfctr.c, pmapi-ppc64_events.c,
	  ppc64_events.c: Clean up the now not-needed pmapi-ppc64_events.c
	  file.

	* src/: Makefile.inc, aix.c, aix.h, configure, configure.in,
	  papi_libpfm_presets.c: Finalize the merge of the preset code.

	* src/aix.c: Fix a missing include.

	* src/: aix.c, configure, configure.in: Move more code to its
	  proper place.

	* src/: aix.c, configure, configure.in, pmapi-ppc64.c,
	  pmapi-ppc64_events.c, ppc64_events.c: Move the
	  ppc64_setup_native_table() routines out of the preset code.

	  This is complicated, as there are two very similar routines
	  setup_ppc64_native_table() used by AIX/pmapi and
	  ppc64_setup_native_table() used by perfctr

	  These could probably be merged too, but this is definitely not
	  the time.

	* src/: aix.c, papi_libpfm_presets.c, pmapi-ppc64_events.c: move
	  pmapi_find_full_event to be _aix_ntv_name_to_code() as it
	  probably always should have been.

	* src/: papi_libpfm_presets.c, papi_setup_presets.h,
	  pmapi-ppc64_events.c: Make papi_libpfm_presets more generic by
	  calling    _papi_hwi_native_name_to_code() rather than a
	  substrate-specific call.

	* src/: aix.c, papi_libpfm_presets.c, pmapi-ppc64_events.c: I was
	  mainly doing this to aid debugging, but now the
	  papi_libpfm_presets.c file and pmapi-ppc64_events.c file are
	  close enough to being identical I might try to merge them.

2011-09-29

	* src/: papi_libpfm_presets.c, pmapi-ppc64_events.c,
	  ppc64_events.h: The files are almost the same now.

	* src/: papi_libpfm_presets.c, pmapi-ppc64_events.c: More making
	  these files the same, including some memory leak fixes that made
	  it to the former but not the latter.

	* src/: papi_libpfm_presets.c, pmapi-ppc64_events.c: Tracking down
	  problems on AIX can be a bit of a pain because
	  papi_libpfm_presets.c and pmapi-ppc64_events.c are almost (but
	  not quite)   the same.  This change makes the files more similar,
	  mostly by   cleaning up whitespace and normalizing comments and
	  debugging statements	 between the two.

	* src/pmapi-ppc64_events.c: Ugh, obvious typo in that last commit.

	* src/pmapi-ppc64_events.c: In ppc64_setup_gps() the current code
	  sometimes walks off the end of the group array and trashes
	  unrelated memory.

	  Until we work out the proper fix, this prints an error message
	  and stops the loop before memory is corrupted.

	* src/papi_data.h: No one seems to remember the last time this file
	  was used, so let's remove it.

2011-09-28

	* src/Makefile.inc: Remove the "u" option to the "ar" command that
	  links libpapi.a, as it was breaking the build on MIPS.

	  This *shouldn't* break anything, but messing around with "ar"
	  options can be potentially dangerous.  I'll double-check the
	  non-Linux builds.

	* src/libpfm4/lib/: Makefile, pfmlib_mips_priv.h,
	  events/intel_nhm_events.h, events/intel_wsm_events.h: Fix up the
	  "collisions" from the libpfm4 import

2011-09-26

	* src/Makefile.inc: We would like to use parallel make on packages
	  to speed things up. However, when this was tried with papi the
	  "make -j4" failed
	  (https://bugzilla.redhat.com/show_bug.cgi?id=740909). I took a
	  look through the code and found that some of dependencies were
	  not quite right. Turns out that $(papiLIBS) is substituted during
	  the configure, but it isn't available for the actual make.
	  Attached is the patch that ensures that the $(LIBS) are built
	  before utils and tests.

	  Patch from Will Cohen <wcohen at redhat.com>

	* src/run_tests.sh: Modify run_tests.sh so that you can set the
	  VALGRIND command externally via environment variable without
	  having to edit run_tests.sh itself.

	  Also adds Date and cpuinfo information to the beginning of
	  run_tests.sh results.  This can help when run run_tests.sh output
	  is passed around when debugging a problem.

	  Patch from Phil Mucci

	* src/: configure, configure.in: If we have no Fortran compiler
	  available, then our current build system tries to build the
	  Fortran examples with an empty compiler string which just
	  generates strange errors.

	  This patch changes F77 to be "echo" which at least avoids the
	  errors.  The proper fix is probably just not to build the Fortran
	  samples if no compiler is available.

	  Patch from Phil Mucci

	* src/papi_libpfm4_events.c: The build on power6 was warning in a
	  DEBUG statement because sizeof() returns an int rather than a
	  long.  So use a cast to avoid this.

	* src/perf_events.c: The move to use pid_t for pid values caused
	  warnings on a --with-debug build due to the lack of a way to
	  print a pid_t value without a cast.

	  This fix adds the proper casts.

2011-09-23

	* src/papi_libpfm4_events.c: Rename the "perfmon_idx" structure
	  field the more evocative "libpfm4_idx" value.

	  Patch from Phil Mucci

	* src/ctests/all_native_events.c: Fix problem where we were passing
	  a pointer to an EventSet rather than the actual EventSet number
	  to PAPI_cleanup_eventset().

	  Also include some of the cleanups from Phil Mucci's MIPS tree.

	* src/: perf_events.c, perf_events.h: Make the perf_event ctl
	  structure have more explicit data types.

	  Patch from Philip Mucci

	* src/: cycle.h, linux-common.c, linux-context.h, linux-lock.h,
	  linux-timer.c, mb.h, papi.h: Add bare minimal MIPS74k support,
	  enough to compile.

	  Patch from Philip Mucci

	* src/papi_events.csv: Add MIPS 74k pre-defined events

	  Patch by Philip Mucci

2011-09-22

	* src/ctests/all_native_events.c: Heike's cleanup_eventset work
	  allows the calling of PAPI_cleanup_eventset with cuda, so
	  uncomment the eventset cleanup code in all_native_events.

	* src/papi.h: Update papi.h to properly detect if being built with
	  a C99 compiler.

	* src/papi_events.csv: Update PAPI_FP_INS event name on amd_fam14h
	  as it was changed in the most recent libpfm4 merge

	* src/libpfm4/: README, config.mk, docs/Makefile,
	  docs/man3/pfm_get_event_info.3, examples/Makefile,
	  examples/showevtinfo.c, include/Makefile,
	  include/perfmon/perf_event.h, lib/Makefile, lib/pfmlib_common.c,
	  lib/pfmlib_gen_mips64_priv.h, lib/pfmlib_mips.c,
	  lib/pfmlib_mips_74k.c, lib/pfmlib_mips_perf_event.c,
	  lib/pfmlib_mips_priv.h, lib/pfmlib_perf_event_pmu.c,
	  lib/pfmlib_priv.h, lib/events/intel_atom_events.h,
	  lib/events/intel_core_events.h, lib/events/intel_nhm_events.h,
	  lib/events/intel_snb_events.h, lib/events/intel_wsm_events.h: Fix
	  the "conflicts" from the libpfm4 git import

	* src/libpfm4/: docs/man3/libpfm_mips_74k.3, tests/validate_arm.c,
	  tests/validate_mips.c: Initial revision

2011-09-21

	* src/multiplex.c: Fix problem where we were freeing a
	  singly-linked list in a for loop, possibly free()ing the
	  allocation before dereferencing ->next

	  Problem reported by coverity tool, via Will Cohen

	* src/utils/cost.c: Fixed uninitialized data problem in papi_cost

	  Problem reported by coverity tool, via Will Cohen

	* src/papi_internal.c: Fix problem where we were copying around
	  chunks of memory that were not initialized yet.

	  Problem reported by coverity tool, via Will Cohen

	* src/multiplex.c: Fix two cases where we were dereferencing a
	  pointer without checking for NULL.

	  Problem reported by coverity tool, via Will Cohen

	* src/linux-memory.c: We were opening files but not properly
	  closing them if we returned early with an error condition.

	  Problem reported by coverity tool, via Will Cohen

	* src/linux-common.c: The coverity tool noticed that we allocate
	  and populate a cpu node info structure, but we never pass any
	  info on this structure outside of the cpu detection routine, in
	  effect leaking the allocation.

	  For now just comment out this code as it is not used by anyone.

	  Problem reported by coverity tool, via Will Cohen

	* src/: papi.c, papi_libpfm3_events.c, perfctr-x86.c: The coverity
	  checker was reporting we forgot to fclose() /proc/cpuinfo in
	  papi.c

	  The bigger question, is why were we unconditionally trying to
	  open /proc/cpuinfo in generic code in papi.c anyway?

	  Turns out it was to set the event masks properly for itanium and
	  p4.

	  The platform code sets CPU vendor and family for us though, so if
	  we just make the event mask code use those values then we don't
	  have to open cpuinfo.  This also means that non-Linux users with
	  the misfortune of running on a P4 might actually work too.

	* src/: papi_internal.c, papi_libpfm_presets.c: In various places
	  we were using MAX_COUNTER_TERMS (defined by substrate) rather
	  than PAPI_MAX_COUNTER_TERMS (a papi predefined event define).
	  This could cause buffer overruns.

	  This fixes things, though really we shouldn't have such similar
	  names for different defines.

	  Problem reported by coverity tool, via Will Cohen

	* src/multiplex.c: Avoid case where we could have been
	  dereferencing a NULL pointer in MPX_stop()

	  Reported by coverity tool, via Will Cohen

	* src/papi.c: Fix problem where thread and cpu could be
	  dereferenced as NULL in PAPI_start()

	  Reported by coverity tool, via Will Cohen

	* src/papi_events.csv: Update the AMD Family 14h (Bobcat)
	  pre-defined events.

	  It turns out they are different enough from 10h that they need
	  their own category.

	  In going through the Fam14h BKDG it turns out that Bobcat has a
	  really nice set of events available, especially for
	  Floating-Point/SSE but also memory bandwidth.

	  With this change, all of the ctests pass on a Bobcat machine.

	* src/: configure, configure.in: Recent Ubuntu versions use the ld
	  flag --as-needed by default.

	  This breaks the PAPI configure step for the libdl check, as the
	  --as-needed flag enforces the rule that libraries (in this case
	  -ldl)   must come after the object files on the command line, not
	  before.

	  The fix for this is easy, the libdl check was wrongly sticking
	  -ldl in LDFLAGS rather than in LIBS.	Putting it in LIBS   makes
	  things work as expected.

	  You can see here:
	  http://www.gentoo.org/proj/en/qa/asneeded.xml

	  For more info on this issue than you probably ever want to know.

2011-09-19

	* src/: ctests/Makefile, ftests/Makefile, utils/Makefile: When
	  building testlib dependencies from ctests/ ftests/ and utils/
	  call $(MAKE) and not make, this should fix aix.

2011-09-14

	* src/: aix.c, freebsd.c, linux-bgp.c, papi_vector.c,
	  perf_events.c, perfctr-ppc64.c, perfctr-x86.c, perfmon-ia64.c,
	  perfmon.c, solaris-niagara2.c, solaris-ultra.c,
	  components/acpi/linux-acpi.c,
	  components/coretemp/linux-coretemp.c,
	  components/coretemp_freebsd/coretemp_freebsd.c,
	  components/example/example.c,
	  components/infiniband/linux-infiniband.c,
	  components/lmsensors/linux-lmsensors.c,
	  components/lustre/linux-lustre.c, components/mx/linux-mx.c,
	  components/net/linux-net.c, win2k/substrate/win32.c,
	  win2k/substrate/winpmc-p3.c: Change initialization of function
	  pointer cleanup_eventset() from vec_int_dummy to vec_int_ok_dummy
	  so that it returns PAPI_OK by default. Roll back initialization
	  for every substrate. AGAIN, keep an eye on builtbot.

	* src/libpfm4/lib/: pfmlib_mips.c, pfmlib_mips_74k.c,
	  pfmlib_mips_perf_event.c, pfmlib_mips_priv.h,
	  events/mips_74k_events.h: Merged with HEAD, still passing all
	  tests

2011-09-13

	* src/papi_libpfm4_events.c: The libpfm4 code was doing a full call
	  to	pfm_get_os_event_encoding() during every call to
	  update_control_state().

	  This is unnecessary, as we can call pfm_get_os_event_encoding()
	  once	 at event creation time and cache the results.	There's no
	  need	 to call it each update_control_state(), as that is called
	   during PAPI_start() and thus relatively time critical.

	* src/run_tests.sh: Missed a $

	* src/: run_tests.sh, components/example/tests/HelloWorld.c: Update
	  run_tests.sh to run component tests, and update the example test
	  to act more like a ctest.

	* src/components/example/example.c: Fix warnings generated by the
	  example component.

	* src/: Makefile.inc, components/Makefile_comp_tests,
	  ctests/Makefile, ctests/do_loops.c, ctests/dummy.c,
	  ctests/papi_test.h, ctests/test_utils.c, ctests/test_utils.h,
	  ftests/Makefile, testlib/Makefile, testlib/do_loops.c,
	  testlib/dummy.c, testlib/papi_test.h, testlib/test_utils.c,
	  testlib/test_utils.h, utils/Makefile: ctests, ftests, utils, and
	  the component tests were all using some files in ctests.

	  These weren't being built when --with-no-cpu-counters was
	  enabled, so the PAPI build was breaking when that was enabled as
	  well as a component.

	  Move the shared files to their own directory, testlib Then update
	  all the users to look in the right place.

	  After this commit you might need to do a "cvs -d update" to make
	  sure you get the new subdirectory.

	* src/: configure, configure.in: When compiling with
	  --with-no-cpu-counters configure would report the platform as
	  linux-perfctr-x86.  This changes it to report as
	  linux-no-counters

2011-09-12

	* src/: aix.c, freebsd.c, linux-bgp.c, perf_events.c,
	  perfctr-ppc64.c, perfctr-x86.c, perfmon-ia64.c, perfmon.c,
	  solaris-niagara2.c, solaris-ultra.c,
	  components/acpi/linux-acpi.c,
	  components/coretemp/linux-coretemp.c,
	  components/coretemp_freebsd/coretemp_freebsd.c,
	  components/example/example.c,
	  components/infiniband/linux-infiniband.c,
	  components/lmsensors/linux-lmsensors.c,
	  components/lustre/linux-lustre.c, components/mx/linux-mx.c,
	  components/net/linux-net.c, win2k/substrate/win32.c,
	  win2k/substrate/winpmc-p3.c: Initialize new function pointer
	  cleanup_eventset() for every substrate. Keep an eye on builtbot.

	* src/components/cuda/: linux-cuda.c, linux-cuda.h: Cannot override
	  void* definitions from PAPI framework layer (e.g.
	  hwd_control_state_t) with typedefs to conform to PAPI Component
	  layer code if this technique has already been used in another
	  substrate (e.g. perfctr-x86). Or short: #undef and typedef can't
	  be done twice.

	* src/perf_events.c: Fix bug caused by forgetting to drop the
	  stream name when converting a fprintf() into a SUBDBG()

	* src/papi_libpfm_presets.c: Patch from William Cohen fixing a
	  potential problem found by a static analysis tool where we could
	  possibly pass a NULL pointer to free_notes().

	* src/papi_libpfm_presets.c: Some memory leak fixes made to libpfm3
	  papi_pfm_events.c by Robert Richter were lost when the
	  libpfm4/libpfm4 presets merge was done.

	  This re-applies these fixes.

2011-09-10

	* src/run_tests.sh: Cleaned up old comment regarding CUDA pre-4.0
	  when it was not possible to access a GPU from multiple CPU
	  threads.

	* src/: papi.c, papi_protos.h, papi_vector.c, papi_vector.h,
	  components/README, components/cuda/linux-cuda.c,
	  components/cuda/linux-cuda.h: Deleted function pointer
	  destroy_eventset from the PAPI vector table, and added
	  cleanup_eventset instead. PAPI_destroy_eventset() requires an
	  empty EventSet. Hence, usually PAPI_cleanup_eventset() is called
	  before PAPI_destroy_eventset(); which also sets the CompIdx to
	  -1. This means, PAPI_destroy_eventset() won't have any knowledge
	  about components. However, in order to disable CUDA eventGroups
	  and to free perfmon hardware on the GPU, knowledge about the CUDA
	  component index is required. Hence, I replaced
	  CUDA_destroy_eventset() with CUDA_cleanup_eventset() in the CUDA
	  component. NOTE: Please make sure you call
	  PAPI_cleanup_eventset() before calling PAPI_shutdown().

2011-09-09

	* src/: papi_protos.h, papi_vector.c, papi_vector.h,
	  components/cuda/linux-cuda.c, components/cuda/linux-cuda.h: CUDA
	  component is now thread-safe. Starting in CUDA 4.0, multiple CPU
	  threads can access the same CUDA context. This is a much easier
	  programming model then pre-4.0 as threads - using the same CUDA
	  context - can share memory, data, etc. Note, it's possible to
	  create a different CUDA context for each thread, but then we are
	  likely running into a limitation that only one context can be
	  profiled at a time.

2011-09-07

	* src/ctests/: do_loops.c, test_utils.c: Apply fixes to problems
	  noticed by a static analysis tool.

	  Provided by William Cohen at RedHat

	* src/papi_events.csv: Update SandyBridge preset events.

	  These were provided by Michel Brown at Bull

	* src/libpfm4/lib/: pfmlib_gen_mips64.c, pfmlib_mips.c,
	  pfmlib_mips_74k.c, pfmlib_mips_perf_event.c, pfmlib_mips_priv.h,
	  events/gen_mips64_events.h, events/mips_74k_events.h: MIPS 74K
	  little endian perf event support, requires 3.0.3+ kernel

2011-09-06

	* src/perf_events.c: The warning I had print on nmi_watchdog being
	  found was a bit much, make it a SUBDBG() call instead.

	  I do wish there were a way to notify the user more visibly,
	  because losing a counter (when you might only have 4 total to
	  begin with) is a big deal, and most Linux vendors are starting to
	  ship kernels with the nmi_watchdog enabled.

	* src/: linux-common.c, linux-common.h, perf_events.c: On newer
	  Linux kernels (2.6.34+) the nmi_watchdog counter can	 steal one
	  of the counters, reducing by one the total available.

	  There's a bug in Linux where if you try to use the full number of
	    counters on such a system with a group leader, the
	  sys_perf_open()   call will succeed only to fail at read time.
	  (instead of the proper   error code at open time).

	  This patch attempts to work around this issue by detecting if   a
	  watchdog timer is being used, and in that case re-use the
	  existing KERNEL_CHECKS_SCHEDUABILITY_UPON_OPEN bugfix code.

	* src/papi_events.csv: We were missing a proper libpfm4 interlagos
	  CPU name in the papi_events.csv file

2011-09-02

	* src/libpfm4/: include/perfmon/perf_event.h, lib/Makefile,
	  lib/pfmlib_intel_nhm_unc.c, lib/pfmlib_intel_x86.c,
	  lib/pfmlib_intel_x86_priv.h, lib/pfmlib_priv.h,
	  lib/events/amd64_events_fam10h.h, lib/events/amd64_events_k7.h,
	  lib/events/amd64_events_k8.h, lib/events/intel_atom_events.h,
	  lib/events/intel_core_events.h,
	  lib/events/intel_coreduo_events.h, lib/events/intel_nhm_events.h,
	  lib/events/intel_nhm_unc_events.h, lib/events/intel_p6_events.h,
	  lib/events/intel_snb_events.h, lib/events/intel_wsm_events.h,
	  lib/events/intel_wsm_unc_events.h,
	  lib/events/intel_x86_arch_events.h: Fix "conflicts" from the
	  libpfm4 import

	* src/papi_libpfm4_events.c: Explicitly set num_native_events to
	  zero at init time.

	  Somehow the value was surviving fork/exec and making the
	  fork/exec test cases fail on a recent Debian system.

	* src/perf_events.c: Set FD_CLOEXEC on the overflow signal handler
	  fd.

	  Otherwise if we exec() with overflow enabled, the exec'd process
	  will quickly die due to lack of signal handler.

	  This patch is needed due to a change in behavior in Linux 3.0.

	  Mark Krentel first noticed this problem.

	* src/: Rules.perfctr-pfm, Rules.pfm, Rules.pfm4_pe, Rules.pfm_pe:
	  Remove the "unexport CFLAGS" lines from the Rules files.

	* src/: multiplex.c, papi_internal.c, utils/component.c: Fix a few
	  warnings reported by gcc-4.6

	* src/: configure, configure.in: Override auto-detection of
	  substrate if the user specifies what they want to build with.
	  This allows building perfctr and perfmon2 PAPI on systems
	  auto-detected as having perf_event support.

	* src/: configure, configure.in: Add a "--with-libpfm3" argument to
	  configure that lets us specify libpfm3 for testing purposes.

	* src/solaris-niagara2.c: Fix solaris niagara2 build problems
	  reported by tigrage on the PAPI forum.

2011-08-30

	* src/configure: Regen

2011-08-29

	* src/configure.in: Check for a requested interface to tweak build
	  flags

	* src/: configure, configure.in: Last bit for cross compiling...

	* src/: configure, configure.in: Better double quotes

	* src/: configure, configure.in: There can be only 1. (choice of
	  perfctr, perfmon or perf events)

	* src/: configure, configure.in: Further refinement of the
	  combinations of --with-perfctr --with-perfmon and
	  --with-perf-events

	  True autotools cross not yet supported until we move to automake.

	  I did trick it into doing a cross compile with...  # ARCH=mips
	  CC=scgcc ./configure --with-arch=mips
	  --host=mips64el-gentoo-linux-gnu- --with-ffsll --with-libpfm4 --w
	  ith-perf-events --with-virtualtimer=times
	  --with-walltimer=gettimeofday --with-tls=__thread --with-CPU=mips
	  # cross compiling should work differently...

	  Wow, do I hate specifying mips in 3 places...

	* src/: config.h.in, configure, configure.in: Some fixes for cross
	  compiling and not including x86_cache_info.c when not ensured an
	  x86.

	* src/Makefile.inc: Surround component tests and cleanup recipies
	  with a conditional, the version of sh that our aix machine has
	  does not handle	   for i in {Empty set};

	  treating it as a syntax error.

	  NOTE: This requires gnu make, my shell-foo couldn't make sh
	  happy, so for now gnu conditionals!

	* ChangeLogP414.txt, RELEASENOTES.txt: Update Release Notes and add
	  ChangeLog for PAPI 4.1.4.

	* src/configure: Rebuild from configure.in with version number bump
	  to 4.1.4 in advance of pending internal vendor release for Cray.