Date: Sat, 15 Jan 2011 19:23:14 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/lib/libkvm Makefile kvm.c kvm.h kvm_getpcpu.3 kvm_pcpu.c kvm_private.h Message-ID: <201101151923.p0FJNSsr028600@repoman.freebsd.org>
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rwatson 2011-01-15 19:23:14 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
lib/libkvm Makefile kvm.c kvm.h kvm_getpcpu.3
kvm_pcpu.c kvm_private.h
Log:
SVN rev 217454 on 2011-01-15 19:23:14Z by rwatson
Merge r204494, r204511 from head to stable/8:
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.
Sponsored by: Juniper Networks, Inc.
Not all programs including kvm.h include the necessary headers to use
u_int, so prefer unsigned int.
Pointed out by: bz, kib, Mr Tinderbox
Revision Changes Path
1.21.2.2 +1 -0 src/lib/libkvm/Makefile
1.34.2.2 +20 -3 src/lib/libkvm/kvm.c
1.19.2.2 +1 -0 src/lib/libkvm/kvm.h
1.2.4.2 +33 -4 src/lib/libkvm/kvm_getpcpu.3
1.1.4.2 +140 -0 src/lib/libkvm/kvm_pcpu.c
1.14.2.2 +15 -0 src/lib/libkvm/kvm_private.h
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