[PATCH V3] tools/perf: Add includes for detected configs in Makefile.perf

[Athira Rajeev]

> On 13-Sep-2023, at 1:06 AM, Arnaldo Carvalho de Melo <acme at kernel.org> wrote:
> 
> Em Tue, Sep 12, 2023 at 07:00:00AM -0700, Ian Rogers escreveu:
>> On Mon, Sep 11, 2023 at 11:38 PM Athira Rajeev
>> <atrajeev at linux.vnet.ibm.com> wrote:
>>> 
>>> Makefile.perf uses "CONFIG_*" checks in the code. Example the config
>>> for libtraceevent is used to set PYTHON_EXT_SRCS
>>> 
>>>        ifeq ($(CONFIG_LIBTRACEEVENT),y)
>>>          PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources)
>>>        else
>>>          PYTHON_EXT_SRCS := $(shell grep -v '^\#\|util/trace-event.c' util/python-ext-sources)
>>>        endif
>>> 
>>> But this is not picking the value for CONFIG_LIBTRACEEVENT that is
>>> set using the settings in Makefile.config. Include the file
>>> ".config-detected" so that make will use the system detected
>>> configuration in the CONFIG checks. This will fix isues that
>>> could arise when other "CONFIG_*" checks are added to Makefile.perf
>>> in future as well.
>>> 
>>> Signed-off-by: Athira Rajeev <atrajeev at linux.vnet.ibm.com>
>> 
>> Reviewed-by: Ian Rogers <irogers at google.com>
> 
> Thanks, applied.
> 
> - Arnaldo
> 

Thanks Ian for the review and thanks Arnaldo for picking this fix

Athira
> 
>> Thanks,
>> Ian
>> 
>>> ---
>>> Changelog:
>>> v2 -> v3:
>>> Added -include since in some cases make clean or make
>>> will fail when config is not included and if config-detected
>>> file is not present.
>>> 
>>> v1 -> v2:
>>> Added $(OUTPUT) prefix to config-detected as pointed
>>> out by Ian
>>> 
>>> tools/perf/Makefile.perf | 3 +++
>>> 1 file changed, 3 insertions(+)
>>> 
>>> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
>>> index 37af6df7b978..f6fdc2d5a92f 100644
>>> --- a/tools/perf/Makefile.perf
>>> +++ b/tools/perf/Makefile.perf
>>> @@ -351,6 +351,9 @@ export PYTHON_EXTBUILD_LIB PYTHON_EXTBUILD_TMP
>>> 
>>> python-clean := $(call QUIET_CLEAN, python) $(RM) -r $(PYTHON_EXTBUILD) $(OUTPUT)python/perf*.so
>>> 
>>> +# Use the detected configuration
>>> +-include $(OUTPUT).config-detected
>>> +
>>> ifeq ($(CONFIG_LIBTRACEEVENT),y)
>>>   PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources)
>>> else
>>> --
>>> 2.31.1
>>> 
> 
> -- 
> 
> - Arnaldo