On Tue, 25 Jun 2013, Runzhen Wang wrote: > This patch makes all the POWER7 events available in sysfs. > > ... > > $ size arch/powerpc/perf/power7-pmu.o > text data bss dec hex filename > 3073 2720 0 5793 16a1 arch/powerpc/perf/power7-pmu.o > > and after the patch is applied, it is: > > $ size arch/powerpc/perf/power7-pmu.o > text data bss dec hex filename > 15950 31112 0 47062 b7d6 arch/powerpc/perf/power7-pmu.o
So if I'm reading this right, there's 45k of overhead for just one cpu type? What happens if we do this on x86? If we have similar for p6/p4/core2/nehalem/ivb/snb/amd10h/amd15h/amd16h/knb that's 450k of event defintions in the kernel. And may I remind everyone that you can't compile perf_event support as a module, nor can you unconfigure it on x86 (it's always built in, no option to disable). I'd like to repeat my unpopular position that we just link perf against libpfm4 and keep event tables in userspace where they belong. Vince _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
