CVS commit: src

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Fri Mar 10 13:09:11 UTC 2017

Modified Files:
        src/sys/arch/i386/i386: pmc.c
        src/sys/arch/x86/include: sysarch.h
        src/usr.bin/pmc: pmc.1 pmc.c

Log Message:
Switch to per-CPU PMC results, and completely rewrite the pmc(1) tool. Now
the PMCs are system-wide, fine-grained and more tunable by the user.

We don't do application tracking, since it would require to store the PMC
values in mdproc and starting/stopping the counters on each context switch.
While this doesn't seem to be particularly difficult to achieve, I don't
think it is really interesting; and if someone really wants to measure
the performance of an application, they can simply schedctl it to a cpu
and look at the PMC results for this cpu.

Note that several options are implemented but not yet used.


To generate a diff of this commit:
cvs rdiff -u -r1.24 -r1.25 src/sys/arch/i386/i386/pmc.c
cvs rdiff -u -r1.10 -r1.11 src/sys/arch/x86/include/sysarch.h
cvs rdiff -u -r1.9 -r1.10 src/usr.bin/pmc/pmc.1
cvs rdiff -u -r1.19 -r1.20 src/usr.bin/pmc/pmc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.