Messages in this thread | | | Date | Wed, 14 Mar 2012 00:03:02 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCH] trace: Fix build breakage without CONFIG_PERF_EVENTS |
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On Tue, Feb 28, 2012 at 03:57:44PM +0100, Jiri Olsa wrote: > On Tue, Feb 28, 2012 at 11:10:23AM +0000, Mark Brown wrote: > > Today's -next fails to build for me: > > > > CC kernel/trace/trace_export.o > > In file included from kernel/trace/trace_export.c:197: kernel/trace/trace_entries.h:58: error: 'perf_ftrace_event_register' undeclared here (not in a function) > > make[2]: *** [kernel/trace/trace_export.o] Error 1 > > make[1]: *** [kernel/trace] Error 2 > > make: *** [kernel] Error 2 > > > > because as of ced390 (ftrace, perf: Add support to use function > > tracepoint in perf) perf_trace_event_register() is declared in trace.h > > only if CONFIG_PERF_EVENTS is enabled but I don't have that set. > > > > Ensure that we always have a definition of perf_trace_event_register() > > by providing a definition if CONFIG_PERF_EVENTS is disabled. > > > > Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> > > --- > > > > This one had the build test run all the way... > > > > kernel/trace/trace.h | 2 ++ > > 1 files changed, 2 insertions(+), 0 deletions(-) > > > > diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h > > index 54faec7..2aef24e 100644 > > --- a/kernel/trace/trace.h > > +++ b/kernel/trace/trace.h > > @@ -842,6 +842,8 @@ int perf_ftrace_event_register(struct ftrace_event_call *call, > > #else > > #define perf_ftrace_event_register NULL > > #endif /* CONFIG_FUNCTION_TRACER */ > > +#else > > +#define perf_ftrace_event_register NULL > > #endif /* CONFIG_PERF_EVENTS */ > > > > #endif /* _LINUX_KERNEL_TRACE_H */ > > -- > > 1.7.9.1 > > > > ook, this one fixies that for me as well ;) I got your replies mixed in > mailbox and thought this one was not actually working.. > > I also added this bit to get rid of the switch warnings, > feel free to use it.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
> > thanks, > jirka > --- > diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h > index dd478fc..5f3f3be 100644 > --- a/include/linux/ftrace_event.h > +++ b/include/linux/ftrace_event.h > @@ -144,12 +144,14 @@ struct event_filter; > enum trace_reg { > TRACE_REG_REGISTER, > TRACE_REG_UNREGISTER, > +#ifdef CONFIG_PERF_EVENTS > TRACE_REG_PERF_REGISTER, > TRACE_REG_PERF_UNREGISTER, > TRACE_REG_PERF_OPEN, > TRACE_REG_PERF_CLOSE, > TRACE_REG_PERF_ADD, > TRACE_REG_PERF_DEL, > +#endif > }; > > struct ftrace_event_call;
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