Commit Graph

20 Commits

Author SHA1 Message Date
Jeff Roberson
597979c4b7 - Add support for nehalem/corei7 cpus. This supports all of the core
counters defined in the reference manual.  It does not support the
   'uncore' events.

Reviewed by:	jkoshy
Sponsored by:	Nokia
2009-01-27 07:29:37 +00:00
Joseph Koshy
b4d091f3a4 Fixes for Core2 Extreme support.
Submitted by:	 "Artem Belevich" <artemb at gmail dot com>
2008-12-03 17:30:36 +00:00
Joseph Koshy
0cfab8ddc1 - Add support for PMCs in Intel CPUs of Family 6, model 0xE (Core Solo
and Core Duo), models 0xF (Core2), model 0x17 (Core2Extreme) and
  model 0x1C (Atom).

  In these CPUs, the actual numbers, kinds and widths of PMCs present
  need to queried at run time.  Support for specific "architectural"
  events also needs to be queried at run time.

  Model 0xE CPUs support programmable PMCs, subsequent CPUs
  additionally support "fixed-function" counters.

- Use event names that are close to vendor documentation, taking in
  account that:
  - events with identical semantics on two or more CPUs in this family
    can have differing names in vendor documentation,
  - identical vendor event names may map to differing events across
    CPUs,
  - each type of CPU supports a different subset of measurable
    events.

  Fixed-function and programmable counters both use the same vendor
  names for events.  The use of a class name prefix ("iaf-" or
  "iap-" respectively) permits these to be distinguished.

- In libpmc, refactor pmc_name_of_event() into a public interface
  and an internal helper function, for use by log handling code.

- Minor code tweaks: staticize a global, freshen a few comments.

Tested by:	gnn
2008-11-27 09:00:47 +00:00
Joseph Koshy
789140c0e7 - Sparsely number enumerations 'pmc_cputype' and 'pmc_event' in order to
reduce ABI disruptions when new cpu types and new PMC events are added
  in the future.
- Support alternate spellings for PMC events.  Derive the canonical
  spelling of an event name from its enumeration name in 'enum pmc_event'.
- Provide a way for users to disambiguate between identically named events
  supported by multiple classes of PMCs in a CPU.
- Change libpmc's machine-dependent event specifier parsing code to
  better support CPUs containing two or more classes of PMC resources.
2008-10-09 14:55:45 +00:00
Joseph Koshy
48ddc62541 Whitespace fixes. 2008-09-17 04:13:14 +00:00
Joseph Koshy
0b9b757d45 Add event name aliases for Pentium PMCs. 2008-09-17 03:53:37 +00:00
Joseph Koshy
6aa5a19391 Correct an event name alias: event "k7-dc-misses" does not support
a unitmask.
2008-09-16 14:13:03 +00:00
Joseph Koshy
484202faab Bring the behaviour of pmc_capabilities() and pmc_width() in line with
documentation: set 'errno' and return -1 in case of an error.

Update (c) years.
2008-03-12 15:51:32 +00:00
Joseph Koshy
aa342b1f18 Improve style(9) compliance and trim a long text line. 2007-12-07 13:52:51 +00:00
Joseph Koshy
73e2d811e8 Correct a typo in an event name alias.
Reported by: 	Harald Servat <redcrash at gmail dot com>
2007-04-11 04:52:09 +00:00
Joseph Koshy
d8acba2a3e Update the pmc(3) manual page's date string and freshen the year in the (c) line for
pmc.3 and libpmc.c.
2006-03-20 15:28:59 +00:00
Joseph Koshy
177a2f2245 Add an alias 'unhalted-cycles' denoting cycles where the CPU is
not in a halt or sleep state.
2006-02-25 05:34:00 +00:00
Joseph Koshy
86a655492a - Update the CPU version check to recognize P4/EMT64 CPUs. [1]
- Allow libpmc(3) to support P4/EMT64 PMCs on the amd64 architecture
  and AMD K8 PMCs on the i386. [2]

Submitted by:	ps [1]
Pointy hat:	myself [2]
Approved by:	re (scottl)
2005-07-03 16:33:22 +00:00
Joseph Koshy
1455fcd32d Fix tinderbox breakage. 2005-06-10 03:45:04 +00:00
Joseph Koshy
f263522a45 MFP4:
- Implement sampling modes and logging support in hwpmc(4).

- Separate MI and MD parts of hwpmc(4) and allow sharing of
  PMC implementations across different architectures.
  Add support for P4 (EMT64) style PMCs to the amd64 code.

- New pmcstat(8) options: -E (exit time counts) -W (counts
  every context switch), -R (print log file).

- pmc(3) API changes, improve our ability to keep ABI compatibility
  in the future.  Add more 'alias' names for commonly used events.

- bug fixes & documentation.
2005-06-09 19:45:09 +00:00
Joseph Koshy
c5153e190b Add convenience APIs pmc_width() and pmc_capabilities() to -lpmc.
Have pmcstat(8) and pmccontrol(8) use these APIs.

Return PMC class-related constants (PMC widths and capabilities)
with the OP GETCPUINFO call leaving OP PMCINFO to return only the
dynamic information associated with a PMC (i.e., whether enabled,
owner pid, reload count etc.).

Allow pmc_read() (i.e., OPS PMCRW) on active self-attached PMCs to
get upto-date values from hardware since we can guarantee that the
hardware is running the correct PMC at the time of the call.

Bug fixes:
 - (x86 class processors) Fix a bug that prevented an RDPMC
   instruction from being recognized as permitted till after the
   attached process had context switched out and back in again after
   a pmc_start() call.

   Tighten the rules for using RDPMC class instructions: a GETMSR
   OP is now allowed only after an OP ATTACH has been done by the
   PMC's owner to itself.  OP GETMSR is not allowed for PMCs that
   track descendants, for PMCs attached to processes other than
   their owner processes.

 - (P4/HTT processors only) Fix a bug that caused the MI and MD
   layers to get out of sync.  Add a new MD operation 'get_config()'
   as part of this fix.

 - Allow multiple system-mode PMCs at the same row-index but on
   different CPUs to be allocated.

 - Reject allocation of an administratively disabled PMC.

Misc. code cleanups and refactoring.  Improve a few comments.
2005-05-01 14:11:49 +00:00
Joseph Koshy
d56c5d4bec Add event aliases for P6 and K8 PMCs. 2005-04-21 05:50:25 +00:00
Marcel Moolenaar
04e9feb06c o Do not include <machine/pmc_mdep.h>. It's automaticly included for
us when <sys/pmc.h> is included.
o  Replace "#if __i386__" and "#if __amd64__" with the equivalent of
   "#ifdef __i386__" and "#ifdef __amd64__" (resp.) These tokens are
   not defined on all platforms.
o  Conditionally compile pmc_parse_mask() on i386 and amd64 only. It's
   only referenced there. This will change when support for other
   platforms is added, of course.

Ok'd by: jkoshy@
2005-04-20 20:48:24 +00:00
Joseph Koshy
c570de2caf Remove extra Id keyword. 2005-04-20 05:36:43 +00:00
Joseph Koshy
ebccf1e3a6 Bring a working snapshot of hwpmc(4), its associated libraries, userland utilities
and documentation into -CURRENT.

Bump FreeBSD_version.

Reviewed by:	alc, jhb (kernel changes)
2005-04-19 04:01:25 +00:00