Messages in this thread Patch in this message | | | Date | Tue, 27 Mar 2018 15:35:53 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH v1 2/3] perf version: Print the status of compiled-in libraries |
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On Tue, Mar 27, 2018 at 09:17:57PM +0800, Jin, Yao wrote:
SNIP
> > +#define IS_BUILTIN(option) __is_defined(option) > > + > > + > > +static void status_print(const char *name, const char *status) > > +{ > > + printf("%22s: [ %3s ]\n", name, status); > > +} > > + > > int cmd_version(int argc __maybe_unused, const char **argv __maybe_unused) > > { > > printf("perf version %s\n", perf_version_string); > > + > > +#define STATUS(__d, __m) \ > > + if (IS_BUILTIN(__d)) \ > > + status_print(#__m, "on"); \ > > + else \ > > + status_print(#__m, "OFF"); > > + > > + STATUS(HAVE_DWARF_SUPPORT, dwarf) > > + STATUS(HAVE_KRAVA_SUPPORT, krava) > > return 0; > > } > > > > Hi Jiri, > > It looks we need to copy the IS_BUILTIN and associated macro definitions to > a common header file. > > I guess you will post this patch if Arnaldo agree with this idea, right? > > I plan to post v2 of this patch series after this 'IS_BUILTIN' patch gets > merged.
please post patch below with your patchset and feel free to change it if needed
thanks, jirka
--- From bdd36e208bde1576bba54679734174c9a2064822 Mon Sep 17 00:00:00 2001 From: Jiri Olsa <jolsa@kernel.org> Date: Tue, 27 Mar 2018 15:30:26 +0200 Subject: [PATCH] tools include: Add config.h header file
Adding IS_BUILTIN macro and its dependencies into tools world.
It's taken from kernel's include/linux/kconfig.h, which can't be taken completely due to its kconfig dependencies.
Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/include/tools/config.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 tools/include/tools/config.h
diff --git a/tools/include/tools/config.h b/tools/include/tools/config.h new file mode 100644 index 000000000000..08ade7df8132 --- /dev/null +++ b/tools/include/tools/config.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TOOLS_CONFIG_H +#define _TOOLS_CONFIG_H + +/* Subset of include/linux/kconfig.h */ + +#define __ARG_PLACEHOLDER_1 0, +#define __take_second_arg(__ignored, val, ...) val + +/* + * Helper macros to use CONFIG_ options in C/CPP expressions. Note that + * these only work with boolean and tristate options. + */ + +/* + * Getting something that works in C and CPP for an arg that may or may + * not be defined is tricky. Here, if we have "#define CONFIG_BOOGER 1" + * we match on the placeholder define, insert the "0," for arg1 and generate + * the triplet (0, 1, 0). Then the last step cherry picks the 2nd arg (a one). + * When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when + * the last step cherry picks the 2nd arg, we get a zero. + */ +#define __is_defined(x) ___is_defined(x) +#define ___is_defined(val) ____is_defined(__ARG_PLACEHOLDER_##val) +#define ____is_defined(arg1_or_junk) __take_second_arg(arg1_or_junk 1, 0) + +/* + * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0 + * otherwise. For boolean options, this is equivalent to + * IS_ENABLED(CONFIG_FOO). + */ +#define IS_BUILTIN(option) __is_defined(option) + +#endif /* _TOOLS_CONFIG_H */ -- 2.13.6
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