On Tue, Mar 25, 2014 at 01:07:27PM -0700, Andi Kleen wrote: > From: Andi Kleen <[email protected]> > > Currently in perf IPC and other metrics cannot be directly shown > separately for both user and kernel in a single run. The problem was > that the metrics matching code did not check event qualifiers. > > With this patch the following case works correctly. > > % perf stat -e cycles:k,cycles:u,instructions:k,instructions:u true > > Performance counter stats for 'true': > > 531,718 cycles:k > 203,895 cycles:u > 338,151 instructions:k # 0.64 insns per cycle > 105,961 instructions:u # 0.52 insns per cycle > > 0.002989739 seconds time elapsed > > Previously it would misreport the ratios because they were matching > the wrong value. > > The patch is fairly big, but quite mechanic as it just > adds context indexes everywhere. > > I didn't support Hypervisor. It's not clear it's worth it. > > Reported-by: William Cohen <[email protected]> > Signed-off-by: Andi Kleen <[email protected]>
Acked-by: Jiri Olsa <[email protected]> thanks, jirka -- 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/
