stephane eranian <eran...@googlemail.com> wrote on 06/19/2009 12:27:31 PM:
> On Fri, Jun 19, 2009 at 9:20 PM, stephane > eranian<eran...@googlemail.com> wrote: > > On Fri, Jun 19, 2009 at 9:03 PM, Corey J Ashford<cjash...@us.ibm.com> wrote: > >> Hi Stephane, > >> > >> For these sort of events which require multiple pmds, how does libpfm > >> describe to the caller the formula for combining the values from the pmds? > >> Or is it expected that the caller knows how? > > > > It is expected the caller knows. > Well, libpfm4 would need to provide some help, at least to detect > that an event > description is indeed special. > > For instance, on AMD64, if I pass IBSOP_EVENT:m=0xfff0, then I will get > back one PMC and 7 PMDS. The tool somehow need to know user has requested > IBS and that special handling is required. > > We could do something such as: > int pfm_amd64_event_ibsop(const char *str); > int pfm_amd64_event_ibsfetch(const char *); Sorry, I'm not following this. The tool calls them with a full event string returns a boolean which says yes or no that the user requested IBS ? What does the ibsfetch vs. ibsop do? Originally, I thought you were talking not about PEBS/IBS so much as events similar to PAPI's preset events, or the generic events in PCL which can require multiple counters to implement. - Corey ------------------------------------------------------------------------------ Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
