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* - Correct a documentation bug: handles returned from a PMC_OP_PMCALLOCATEjkoshy2007-11-221-4/+11
| | | | | | | request are 32 bit values, and are not necessarily small. - Note that the PMC_F_KGMON flag is currently unimplemented. - Tweak description of an EINVAL error return. - Add an "AUTHORS" section.
* Describe an error return that was missed out earlier.jkoshy2007-10-131-1/+6
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* Improve a sentence.jkoshy2007-02-121-4/+1
| | | | | Prodded by: billf MFC after: 3 days
* Spelling/grammar fixes.jkoshy2006-04-211-11/+10
| | | | MFC after: 1 week
* Typo fix; "ing" -> "in".jkoshy2006-03-011-1/+1
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* Document the EOPNOTSUPP returned by hwpmc(4) if a sampling mode PMCjkoshy2005-12-271-0/+3
| | | | | | is requested on a CPU without an APIC. Requested by: anholt (a while ago)
* -mdoc sweep.ru2005-11-181-2/+2
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* Note the requirement for 'device apic' on i386 systems. [1]jkoshy2005-09-281-4/+7
| | | | | | | Consistently use 'x86' when referring to behaviour common to the i386 and amd64. Submitted by: Niklas Sorensson <nik@cs.chalmers.se> [1]
* Correct a typo.jkoshy2005-09-281-1/+1
| | | | MFC after: 3 days
* Document the diagnostic message printed at startup time. Keep thejkoshy2005-08-231-7/+26
| | | | | | | | | list of diagnostic messages sorted. Document the recently introduced EOPNOTSUPP error return. Repair sort ordering for the list of error descriptions. MFC after: 3 days
* Document two new diagnostic messages in hwpmc(4).jkoshy2005-07-301-0/+7
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* Add COMPATIBILITY and HISTORY sections. Fix an -mdoc error.jkoshy2005-07-211-0/+17
| | | | | | Cross-reference pmclog(3). Reviewed by: ru
* Fix typos and use consistent section names in manual pages:hrs2005-07-151-1/+1
| | | | | | | | | | s/SYSCTLS/SYSCTL VARIABLES/ s/TUNABLES/LOADER TUNABLES/ s/CAVEAT/CAVEATS/ s/DESCIPTION/DESCRIPTION/ Reviewed by: ru MFC after: 3 days
* Fix markup, correct typos, improve grammar, move the BUGS section tojkoshy2005-06-301-144/+144
| | | | | | | the end of the manual page. Submitted by: ru Approved by: re (blanket hwpmc)
* Correct spelling of options PMC_HOOKS to options HWPMC_HOOKS.rwatson2005-06-191-1/+1
| | | | Approved by: re (man page blanket)
* Document the need for a log file to be configured before a PMCjkoshy2005-06-091-3/+17
| | | | configured with logging options can be started.
* MFP4:jkoshy2005-06-091-22/+109
| | | | | | | | | | | | | | | | - 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.
* Add convenience APIs pmc_width() and pmc_capabilities() to -lpmc.jkoshy2005-05-011-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Bring a working snapshot of hwpmc(4), its associated libraries, userland ↵jkoshy2005-04-191-0/+583
utilities and documentation into -CURRENT. Bump FreeBSD_version. Reviewed by: alc, jhb (kernel changes)
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