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Message-ID: <cea465e6-ff24-4552-b4f6-a0594ea9ea6c@linaro.org>
Date:   Tue, 12 Dec 2023 20:21:41 +0100
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Reply-To: neil.armstrong@linaro.org
Subject: Re: [PATCH 1/3] soc: qcom: pmic_pdcharger_ulog: Search current
 directory for headers
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From:   Neil Armstrong <neil.armstrong@linaro.org>
To:     Andrew Halaney <ahalaney@redhat.com>
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20231205-pmicpdcharger-ulog-fixups-v1-0-71c95162cb84@redhat.com>
 <20231205-pmicpdcharger-ulog-fixups-v1-1-71c95162cb84@redhat.com>
 <320864f5-fdd2-4345-a0dd-b97bcf17f473@linaro.org>
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 <139f9af0-ca6a-4a58-ae18-79ef6fac47e3@linaro.org>
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On 12/12/2023 17:52, Neil Armstrong wrote:
> On 12/12/2023 17:15, Andrew Halaney wrote:
>> On Tue, Dec 12, 2023 at 09:54:48AM -0600, Andrew Halaney wrote:
>>> On Tue, Dec 12, 2023 at 04:23:20PM +0100, Neil Armstrong wrote:
>>>> Hi Andrew,
>>>>
>>>> On 06/12/2023 00:05, Andrew Halaney wrote:
>>>>> As specified in samples/trace_events/Makefile:
>>>>>
>>>>>       If you include a trace header outside of include/trace/events
>>>>>       then the file that does the #define CREATE_TRACE_POINTS must
>>>>>       have that tracer file in its main search path. This is because
>>>>>       define_trace.h will include it, and must be able to find it from
>>>>>       the include/trace directory.
>>>>>
>>>>> Without this the following compilation error is seen:
>>>>>
>>>>>         CC      drivers/soc/qcom/pmic_pdcharger_ulog.o
>>>>>       In file included from drivers/soc/qcom/pmic_pdcharger_ulog.h:36,
>>>>>                        from drivers/soc/qcom/pmic_pdcharger_ulog.c:15:
>>>>>       ./include/trace/define_trace.h:95:42: fatal error: ./pmic_pdcharger_ulog.h: No such file or directory
>>>>>          95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
>>>>>             |                                          ^
>>>>>       compilation terminated.
>>>>
>>>> I never experienced such error, and no CI even reported it, can you explain how you got this ?
>>>
>>> To be honest, I am unsure why I'm experiencing this (and until I saw
>>> another thread about it today I thought maybe I had screwed something
>>> up!).
>>>
>>> I just took it as an opportunity to try and read up on the tracing
>>> infrastructure and sent this series. Definitely no expertise with the
>>> in's and out's of tracing :)
>>>
>>> I'm able to reproduce this on next-20231211:
>>>
>>>      ahalaney@fedora ~/git/linux-next (git)-[b4/b4-stmmac-handle-mdio-enodev] % ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make mrproper
>>>      <snip>
>>>      ahalaney@fedora ~/git/linux-next (git)-[b4/b4-stmmac-handle-mdio-enodev] % ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make defconfig
>>>      <snip>
>>>      *** Default configuration is based on 'defconfig'
>>>      #
>>>      # configuration written to .config
>>>      #
>>
>> Realized I missed a step, actually enabling tracing and the driver at
>> play here... but the result is the same.
>>
>> Attached is a config where I hit this.
>>
>>>      130 ahalaney@fedora ~/git/linux-next (git)-[b4/b4-stmmac-handle-mdio-enodev] % ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make drivers/soc/qcom/pmic_pdcharger_ulog.o
>>>        HOSTCC  scripts/dtc/dtc.o
>>>      <snip>
>>>        CC      drivers/soc/qcom/pmic_pdcharger_ulog.o
>>>      In file included from drivers/soc/qcom/pmic_pdcharger_ulog.h:36,
>>>              from drivers/soc/qcom/pmic_pdcharger_ulog.c:15:
>>>      ./include/trace/define_trace.h:95:42: fatal error: ./pmic_pdcharger_ulog.h: No such file or directory
>>>         95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
>>>      <snip>
>>>      2 ahalaney@fedora ~/git/linux-next (git)-[b4/b4-stmmac-handle-mdio-enodev] %
>>>
>>> I even tried it in a fedora container with the above build commands and
>>> the following podman invocation (plus some package installs) and saw the error:
>>>
>>>      podman run -it -v ~/git/linux-next:/linux-next:z quay.io/fedora/fedora:latest /bin/bash
>>>
>>> So I'm unsure if it's a fedora package version thing (which I'm running on my host)
>>> or something else... Once I saw it was sort of spelled out in the
>>> examples I referenced here I just decided it was something needed
>>> fixing, regardless of why I'm hitting it while others seem ok.
> 
> Interesting, I don't get the problem with the same tag, same .config but with gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu
> 
> I'll try with gcc 13.

Ok tried with ARM's arm-gnu-toolchain-13.2.rel1-x86_64-aarch64-none-linux-gnu (https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads),
and no error, and I even tried with https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/13.2.0/ and same no error...

Neil

> 
> Neil
> 
>>>
>>>>
>>>> Thanks,
>>>> Neil
>>>>
>>>>>
>>>>> Fixes: 086fdb48bc65 ("soc: qcom: add ADSP PDCharger ULOG driver")
>>>>> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
>>>>> ---
>>>>>    drivers/soc/qcom/Makefile | 1 +
>>>>>    1 file changed, 1 insertion(+)
>>>>>
>>>>> diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
>>>>> index 110108e23669..05b3d54e8dc9 100644
>>>>> --- a/drivers/soc/qcom/Makefile
>>>>> +++ b/drivers/soc/qcom/Makefile
>>>>> @@ -10,6 +10,7 @@ obj-$(CONFIG_QCOM_PDR_HELPERS)    += pdr_interface.o
>>>>>    obj-$(CONFIG_QCOM_PMIC_GLINK)    += pmic_glink.o
>>>>>    obj-$(CONFIG_QCOM_PMIC_GLINK)    += pmic_glink_altmode.o
>>>>>    obj-$(CONFIG_QCOM_PMIC_PDCHARGER_ULOG)    += pmic_pdcharger_ulog.o
>>>>> +CFLAGS_pmic_pdcharger_ulog.o    :=  -I$(src)
>>>>>    obj-$(CONFIG_QCOM_QMI_HELPERS)    += qmi_helpers.o
>>>>>    qmi_helpers-y    += qmi_encdec.o qmi_interface.o
>>>>>    obj-$(CONFIG_QCOM_RAMP_CTRL)    += ramp_controller.o
>>>>>
>>>>
>