Commit Graph

18 Commits

Author SHA1 Message Date
Justin Hibbits
cdf9344e50 e5500 HWPMC is identical to e500mc, so add support check for it. 2016-01-17 00:14:22 +00:00
Justin Hibbits
a745246822 Implement hwpmc(4) for Freescale e500 core.
This supports e500v1, e500v2, and e500mc. Tested only on e500v2, but the
performance counters are identical across all, with e500mc having some
additional events.

Relnotes:	Yes
2015-04-18 21:39:17 +00:00
Justin Hibbits
cddd0f61e3 Fix PowerPC backtraces. Since kernel and user have completely separate address
spaces, rather than a split address, we actually can't check for being within
the kernel's address range.  Instead, do what other backtraces do, and use
trapexit()/asttrapexit() as the stack sentinel.

MFC after:	3 weeks
2014-09-14 22:03:41 +00:00
Justin Hibbits
e42edd4db6 Fix a bug in hwpmc(4) callchain retrieval, for both user and kernel.
The array index for the callchain is getting double-incremented -- both in the
loop and the storing.  It should only be incremented in one location.

Also, constrain the stack pointer range check.

MFC after:	2 weeks
2014-07-03 06:52:26 +00:00
Justin Hibbits
5c0761ba72 Fix callchain capture for hwpmc(4). While here, some style(9) fixes, too.
MFC after:	2 weeks
2014-02-27 04:45:29 +00:00
Justin Hibbits
169dd953b0 Add hwpmc(4) support for the PowerPC 970 class processors, direct events.
This also fixes asserts on removal of the module for the mpc74xx.

The PowerPC 970 processors have two different types of events: direct events
and indirect events.  Thus far only direct events are supported.  I included
some documentation in the driver on how indirect events work, but support is
for the future.

MFC after:	1 month
2014-02-01 02:03:50 +00:00
Justin Hibbits
e35effceaf MPC74xx should not fall through, to the error case.
MFC after:	1 week
2014-01-25 22:50:42 +00:00
Justin Hibbits
0587a07215 Add userland PMC backtracing, and use the PMC trapframe macros for kernel
backtraces.

MFC after:	1 week
2013-12-14 20:12:28 +00:00
Justin Hibbits
995df27c66 Fix the build. 2013-09-05 01:13:26 +00:00
Justin Hibbits
177f0102f4 Fix hwpmc(4) for 32-bit PowerPC. 2013-09-04 04:11:38 +00:00
Justin Hibbits
b2fb58a11d Refactor PowerPC hwpmc(4) driver into generic and specific. More refactoring
will likely be done as more drivers are added, since AIM-compatible processors
have similar PMC configuration logic.
2013-09-03 00:34:18 +00:00
Fabien Thomas
5df02332df Fix class malloc init for mips and powerpc that was not converted
by r233628.

Found by: monthadar, adrian
MFC after:	1 week
2012-04-23 08:58:01 +00:00
Fabien Thomas
f5f9340b98 Add software PMC support.
New kernel events can be added at various location for sampling or counting.
This will for example allow easy system profiling whatever the processor is
with known tools like pmcstat(8).

Simultaneous usage of software PMC and hardware PMC is possible, for example
looking at the lock acquire failure, page fault while sampling on
instructions.

Sponsored by: NETASQ
MFC after:	1 month
2012-03-28 20:58:30 +00:00
Bjoern A. Zeeb
d9667fc69e Quite the tinderbox for the holidays. Remove the assert[1].
Suggested by:	jhibbits [1]
MFC after:	3 days
2011-12-25 14:29:36 +00:00
Justin Hibbits
7b25dcca76 Implement hwpmc counting PMC support for PowerPC G4+ (MPC745x/MPC744x).
Sampling is in progress.

Approved by:	nwhitehorn (mentor)
MFC after:	9.0-RELEASE
2011-12-24 19:34:52 +00:00
Joseph Koshy
c85e8dcf18 Unbreak LINT. 2008-11-22 12:34:49 +00:00
Joseph Koshy
9596916c4d Add stub functions to unbreak LINT. 2007-12-07 17:21:53 +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