dean gaudet wrote:
On Mon, 8 Jan 2007, H. Peter Anvin wrote:
I *definitely* support the concept that RDPMC 0 should could CPU cycles by
convention in Linux.
unfortunately that'd be very limiting and annoying on core2 processors
which have dedicated perf counters for clocks unhalted (actual vs.
nominal), but only 2 configurable perf counters. i forget what ecx value
gets you the dedicated counters... but a solution which might work would
be a syscall to return the perf counter number...
or we could just merge perfmon ;)
OK, if there are dedicated counters in hardware at a different number,
we probably should make it an ELF entry value (no need to make it a
syscall for a constant.)
-hpa
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
