On Fri, 2009-05-08 at 16:15 +0200, Geert Uytterhoeven wrote: > Counters for the various classes of emulated instructions are available under > /sys/kernel/debug/powerpc/emulated_instructions (assumed debugfs is mounted on > /sys/kernel/debug). Optionally (controlled by > /sys/kernel/debug/powerpc/emulated_instructions/do_warn), rate-limited > warnings > can be printed to the console when instructions are emulated. > > Signed-off-by: Geert Uytterhoeven <geert.uytterhoe...@sonycom.com> > --- > Tested on ppc64 (ps3) and ppc32 (sequoia) using mfpvr. > > v3: > - add generic unaligned > - switch from sysfs + sysctl to debugfs. All virtual files now show up under > /sys/kernel/debug/powerpc/emulated_instructions (assumed debugfs mounted > on > /sys/kernel/debug) > - enable the printing of rate-limited warnings by writing a non-zero value > to > /sys/kernel/debug/powerpc/emulated_instructions/do_warn > - switch from per-CPU to system-wide counters > - always use 32-bit counters (was 64-bit on ppc64) > - counters are writable, i.e. can be reset (by root)
Nice :) My only query is whether it needs its own CONFIG option. Some folks might want other DEBUG_FS things but not this? cheers
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