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6 Commits

Author SHA1 Message Date
Davide Italiano
c0c97b9962 malloc(9) cannot return NULL if M_WAITOK flag is specified. 2013-04-30 15:59:22 +00:00
Fabien Thomas
d49302aead Add a generic way to call per event allocate / release function. 
Reviewed by:	mav
MFC after:	1 month
 2013-03-05 10:18:48 +00:00
Alexander Motin
1af19ee4a2 Add support for good old 8192Hz profiling clock to software PMC. 
Reviewed by:	fabient
 2013-02-26 18:13:42 +00:00
Alexander Motin
8a4f65bc33 Change the way how software PMC updates counters. 
This at least fixes -n option of pmcstat.

Reviewed by:	fabient
 2013-02-26 13:59:39 +00:00
Sean Bruno
ca57f64f7d Quiesce a couple of clang warnings 
Submitted by:	hiren panchasara <hiren.panchasara@gmail.com>
Obtained from:	Yahoo! Inc
 2013-01-12 18:30:52 +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