On Fri, May 22, 2015 at 08:58:22AM -0700, Sukadev Bhattiprolu wrote:
SNIP
> |
> | there's no concetion (yet) in the new build system to trigger
> | another binery build as a dependency for object file.. I'd
> | rather do this the framework way, please check attached patch
> |
> | also currently the pmu-events.c is generated every time,
> | so we need to add the event json data files as dependency
>
> pmu-events.c depends only on JSON files relevant to the arch perf is
> being built on and there could be several JSON files per arch. So it
> would complicate the Makefiles.
>
> Besides, didn't we conclude that the cost of generating pmu-events.c
> during build is negligible ?
yes, but only when it's necessary.. if there's no change in definitions
and we already have pmu-events.o built.. why rebuild?
> |
> | -libperf-y += pmu-events/
> | libperf-y += util/
> | libperf-y += arch/
> | libperf-y += ui/
> | diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> | index 57e46a541686..a4ba451cffa2 100644
> | --- a/tools/perf/Makefile.perf
> | +++ b/tools/perf/Makefile.perf
> | @@ -272,14 +272,29 @@ strip: $(PROGRAMS) $(OUTPUT)perf
> |
> | PERF_IN := $(OUTPUT)perf-in.o
> |
> | +JEVENTS := $(OUTPUT)pmu-events/jevents
> | +JEVENTS_IN := $(OUTPUT)pmu-events/jevents-in.o
> | +PMU_EVENTS_IN := $(OUTPUT)pmu-events/pmu-events-in.o
>
> I will try this out, but why not just add pmu-events.o to libperf?
this is related to my first comment:
> | there's no concetion (yet) in the new build system to trigger
> | another binery build as a dependency for object file.. I'd
> | rather do this the framework way, please check attached patch
it's not possible to trigger the application build within the Build file
in a way the framework was designed.. so it cannot easily display commands
handle dependencies etc.. just allows simple/hacky solution you did ;-)
so I separated the pmu-events.o so libperf does not have dependency
on the jevents applications, and treat it as separated object
jirka
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
