Bjorn, I ran into one issue related with the new allocator.
In the case of a Core 2 Duo processor, the PMU implements more than just basic counters. In particular it supports fixed counters and PEBS where both use another set of MSRs. Those are not within a 66 bit distance from MSR_ARCH_PERFMON_EVNTSEL0. Thus the allocator fails with an assertion. I do know that perfmon is the only consumer of those extended features TODAY. Yet I think we need to define the allocator such that it can work with other "distant" MSRs as well. On Wed, Jun 20, 2007 at 08:33:15PM +0200, Bj?rn Steinbrink wrote: > On 2007.06.20 15:01:02 +0200, Andi Kleen wrote: > > > > > Once this is fixed (which is what Bjorn did), then I will agree with you. > > > For this, the allocator needs to be able to probe the CPU and initialize > > > its own data structures. > > > > Ok that sounds reasonable. Please someone send a patch that does only > > that. > > OK, here come the bugfixes without any restructuring. The first patch > enables unconditional probing of the watchdog. The second makes the > perfmon nmi watchdog reserve the correct perfctr/evntsel. > > Björn > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > oprofile-list mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/oprofile-list -- -Stephane - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
