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11 Commits

Author SHA1 Message Date
ngie
6a7cf1f692 Tweak r315363 slightly 
I noticed after commit that kvm_dpcpu_setcpu was defined in the manpage.
Thus, the correct macro for the function reference is .Fn, not .Xr.

MFC after:	1 week
X-MFC with:	r315363
Sponsored by:	Dell EMC Isilon
 2017-03-16 03:24:15 +00:00
ngie
999eea0e28 Fix manlint errors 
- Add missing comma after kvm_dpcpu_setcpu .Nm macro use (multiple
  .Nm entries should be separated by commas)
- Add missing section for kvm_dpcpu_setcpu Xr.

MFC after:	1 week
Reported by:	make manlint
Sponsored by:	Dell EMC Isilon
 2017-03-16 03:20:59 +00:00
glebius
d231df0ee2 Add kvm_getncpus() to obtain mp_ncpus. 
Sponsored by:	Nginx, Inc.
 2014-02-12 19:22:48 +00:00
glebius
25d59f119c While it isn't too late and kvm_read_zpcpu() function isn't yet used 
outside libkvm(3), change its order of arguments, so that it is the
same as in kvm_read().

Sponsored by:	Nginx, Inc.
 2014-02-12 09:41:17 +00:00
joel
3750352678 Remove EOL whitespace. 2013-04-11 13:05:38 +00:00
glebius
147dda2e5e o Provide function kvm_read_zpcpu() to access UMA_ZONE_PCPU allocations. 
o Provide function kvm_counter_u64_fetch() to fetch valut of a counter(9).

Sponsored by:	Nginx, Inc.
 2013-04-10 20:26:53 +00:00
gjb
8670397617 General mdoc(7) and typo fixes. 
PR:		167734
Submitted by:	Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after:	3 days
 2012-05-11 20:06:46 +00:00
uqs
8f141f1a13 Fix several typos in macros or macro misusage. 
Found by:	make manlint
Reviewed by:	ru
Approved by:	philip (mentor)
 2010-03-12 10:01:06 +00:00
rwatson
2c2940cdf7 A first cut at teaching libkvm how to deal with dynamic per-CPU storage 
(DPCPU):

A new API, kvm_dpcpu_setcpu(3), selects the active CPU for the purposes
of DPCPU.  Calls to kvm_nlist(3) will automatically translate DPCPU
symbols and return a pointer to the current CPU's version of the data.
Consumers needing to read the same symbol on several CPUs will invoke a
series of setcpu/nlist calls, one per CPU of interest.

This addition makes it possible for tools like netstat(1) to query the
values of DPCPU variables during crashdump analysis, and is based on
similar code handling virtualized global variables.

MFC after:	1 week
Sponsored by:	Juniper Networks, Inc.
 2010-03-01 00:27:55 +00:00
jhb
50652bcc22 Add a "CACHING" section regarding the internal caching of kernel variables 
and the ability to clear that cache.
 2008-08-21 19:22:13 +00:00
jhb
78678aa46b Add two new routines to libkvm for working with per-CPU data: 
kvm_getmaxcpu() and kvm_getpcpu().

MFC after:	1 week
 2008-08-19 19:55:33 +00:00