Commit Graph

17 Commits

Author SHA1 Message Date
Joseph Koshy
5138c36a1b Add COMPATIBILITY and HISTORY sections.
MFC after:	3 days
2005-07-21 06:44:54 +00:00
Joseph Koshy
79b6b08fd5 Catch with the source code. Sort a list alphabetically. Add a
HISTORY section.

MFC after:	3 days
2005-07-21 06:42:30 +00:00
Christian Brueffer
f0ea72a038 - Remove MLINKS to nonexistant manpages
- Change some section numbers to match reality
- For MLINKS to manpages from ports, mention which port installs them

MFC after:	3 days
2005-07-14 20:29:08 +00:00
Joseph Koshy
82c83e34dd Fix a bug in pmclog_read() that causes it to return with a false
error when a log record crosses an internal buffer boundary.

Approved by:	re (scottl)
2005-07-09 17:12:30 +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
151392465f MFP4:
- pmcstat(8) gprof output mode fixes:

  lib/libpmc/pmclog.{c,h}, sys/sys/pmclog.h:
  + Add a 'is_usermode' field to the PMCLOG_PCSAMPLE event
  + Add an 'entryaddr' field to the PMCLOG_PROCEXEC event,
    so that pmcstat(8) can determine where the runtime loader
    /libexec/ld-elf.so.1 is getting loaded.

  sys/kern/kern_exec.c:
  + Use a local struct to group the entry address of the image being
    exec()'ed and the process credential changed flag to the exec
    handling hook inside hwpmc(4).

  usr.sbin/pmcstat/*:
  + Support "-k kernelpath", "-D sampledir".
  + Implement the ELF bits of 'gmon.out' profile generation in a new
    file "pmcstat_log.c".  Move all log related functions to this
    file.
  + Move local definitions and prototypes to "pmcstat.h"

- Other bug fixes:
  + lib/libpmc/pmclog.c: correctly handle EOF in pmclog_read().
  + sys/dev/hwpmc_mod.c: unconditionally log a PROCEXIT event to all
    attached PMCs when a process exits.
  + sys/sys/pmc.h: correct a function prototype.
  + Improve usage checks in pmcstat(8).

Approved by:	re (blanket hwpmc)
2005-06-30 19:01:26 +00:00
Ruslan Ermilov
9abe909b54 - Tidy up the markup.
- Clarify the sections on "Cascading P4 PMCs" and
  "Precise Event Based Sampling" (1)
- Bump document date.

Reviewed by:	jkoshy
Submitted by:	jkoshy (1)
Approved by:	re (blanket)
2005-06-24 16:56:24 +00:00
Ruslan Ermilov
f711ce99e5 Tidy up the markup.
Reviewed by:	jkoshy
Approved by:	re (blanket)
2005-06-24 16:13:36 +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
67edd22983 Note events affected by processor errata. 2005-04-23 05:45:18 +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
90f629a16a Remove superfluous CFLAGS lines. Use the conditional '?=' construct
for WARNS lines.

Submitted by:	ru
2005-04-19 14:43:59 +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