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6 Commits

Author SHA1 Message Date
davide
6fde656c55 malloc(9) cannot return NULL if M_WAITOK flag is specified. 2013-04-30 15:59:22 +00:00
fabient
5e81647255 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
mav
fdde785247 Add support for good old 8192Hz profiling clock to software PMC. 
Reviewed by:	fabient
 2013-02-26 18:13:42 +00:00
mav
d9ff8818e5 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
sbruno
c3acd922ed 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
fabient
5edfb77dd3 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