On Fri, 2010-03-19 at 14:57 +0800, Li Zefan wrote: > A symbol's value won't be recalc-ed until we save config file or > enter the menu where the symbol sits. > > So If I enable OPTIMIZE_FOR_SIZE, and search FUNCTION_GRAPH_TRACER: > > Symbol: FUNCTION_GRAPH_TRACER [=y] > Prompt: Kernel Function Graph Tracer > Defined at kernel/trace/Kconfig:140 > Depends on: ... [=y] && (!X86_32 [=y] || !CC_OPTIMIZE_FOR_SIZE [=y]) [ off topic ] I'm not sure we need that anymore. I think Thomas added a patch that can disable the cases that gcc causes the function graph to fail. I pushed a patch before that also runs a check at compile time to make sure that gcc does not produce a bad mcount setup that would screw up the function graph tracer. http://lkml.org/lkml/2009/11/20/2 It probably still makes sense to add it. -- Steve > ... > > >From the dependency it should result in FUNCTION_GRAPH_TRACER=n, > but it still shows FUNCTION_GRAPH_TRACER=y. > > Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx> > --- > scripts/kconfig/symbol.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c > index 6c8fbbb..dfef8d1 100644 > --- a/scripts/kconfig/symbol.c > +++ b/scripts/kconfig/symbol.c > @@ -750,6 +750,7 @@ struct symbol **sym_re_search(const char *pattern) > return NULL; > } > } > + sym_calc_value(sym); > sym_arr[cnt++] = sym; > } > if (sym_arr) > -- 1.6.3 > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
