src/sys/dev/hwpmc, branch release/6.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2005-11-03T00:35:26+00:00

'RELENG_6_0_0_RELEASE'.

This commit was manufactured to restore the state of the 6.0-RELEASE image.

MFC r1.12:

2005-09-15T15:48:16+00:00

  ``Process one NMI interrupt per handler invocation as the processor
  buffers pending NMIs from multiple interrupting PMCs and delivers
  them serially.''

Approved by:	re (kensmith)

MFC:

2005-08-26T19:49:32+00:00

 [ hwpmc_mod.c:1.14,1.15 ]
 - Print PMC capabilities at module load time.

 - Return EOPNOTSUPP instead of EINVAL if a PMC allocation request
   specifies a PMC capability (e.g., sampling) that is not supported
   by hardware.  Return EINVAL early if the PMC class passed in is
   not recognized.

 [ hwpmc_x86.c:1.3 ]
 - On x86 processors, turn off 'INTERRUPT' capabilities on PMCs
   if the CPU does not have its local APIC enabled.

Approved by:	re (scottl)

MFC { sys/dev/hwpmc/hwpmc_mod.c:1.13, sys/kern/kern_pmc.c:1.5,

2005-08-15T18:46:13+00:00

    sys/sys/pmckern.h:1.5 }

Fail the module loading process if the currently executing kernel
was not compiled with 'options HWPMC_HOOKS' or if the compiled-in
version numbers of the kernel and module are not in sync.

Approved by:	re (kensmith)

MFC: Convert the atomic pointer operations to operate on uintptr_t rather

2005-08-05T19:44:00+00:00

than void *.

Approved by:	re (kensmith)

MFC r1.9:

2005-07-29T03:01:40+00:00

  Fix breakage introduced in rev 1.7.

Approved by:	re (kensmith)

MFC r1.12:

2005-07-29T02:58:34+00:00

  Use LK_CANRECURSE since when a PMC-owning process performs an exec(),
  the new text vnode is already locked by itself.

Approved by:	re (kensmith)

sys/dev/hwpmc/hwpmc_{amd,piv,ppro}.c:

2005-07-09T17:29:36+00:00

- Update driver interrupt statistics correctly.

sys/sys/pmc.h, sys/dev/hwpmc/hwpmc_mod.c:
- Fix a bug affecting debug printfs.
- Move the 'stalled' flag from being in a bit in the
  'pm_flags' field of a 'struct pmc' to a field of its own in the
  same structure.  This flag is updated from the NMI handler and
  keeping it separate makes it easier to avoid races with other
  parts of the code.

sys/dev/hwpmc/hwpmc_logging.c:
- Do arithmetic with 'uintptr_t' types rather that casting
  to and from 'char *'.

Approved by:	re (scottl)

- Update the CPU version check to recognize P4/EMT64 CPUs. [1]

2005-07-03T16:33:22+00:00

- 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)

MFP4:

2005-06-30T19:01:26+00:00

- 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)