[dpdk-dev] [kmods PATCH v2 4/4] windows/virt2phys: add tracing
Menon, Ranjit
ranjit.menon at intel.com
Fri Oct 1 00:07:58 CEST 2021
Hi Dmitry,
On 5/26/2021 2:01 PM, Dmitry Kozlyuk wrote:
> WPP tracing [1] allows kernel drivers to print logs that can be viewed
> without attaching a debugger to the running system. Traces are colelcted
> only when enabled. Instrument virt2phys with traces:
> * ERROR: failures that prevent the driver from working.
> * WARNING: incorrect calls to the driver.
> * INFO: starting or completing operations with memory.
>
> [1]: https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/wpp-software-tracing
>
> Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
> ---
> <snip!>
diff --git a/windows/virt2phys/virt2phys.vcxproj
b/windows/virt2phys/virt2phys.vcxproj
> index b462493..c9f884a 100644
> --- a/windows/virt2phys/virt2phys.vcxproj
> +++ b/windows/virt2phys/virt2phys.vcxproj
> @@ -41,6 +41,7 @@
> <ItemGroup>
> <ClInclude Include="virt2phys.h" />
> <ClInclude Include="virt2phys_logic.h" />
> + <ClInclude Include="virt2phys_trace.h" />
> </ItemGroup>
> <ItemGroup>
> <Inf Include="virt2phys.inf" />
> @@ -169,9 +170,9 @@
> </ItemDefinitionGroup>
> <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
> <ClCompile>
> - <WppEnabled>false</WppEnabled>
> + <WppEnabled>true</WppEnabled>
> <WppRecorderEnabled>true</WppRecorderEnabled>
> - <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">trace.h</WppScanConfigurationData>
> + <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">virt2phys_trace.h</WppScanConfigurationData>
This change is also required for the 'Release|x64' configuration,
otherwise 'Release' builds fail.
<snip!>
Also, it appears the newer version of the compiler (combined with the
new version of WDK/SDK), requires that the driver signing process
mandate a File Digest Algorithm (using the /fd option). It is a warning
today, but they claim it could become a requirement in the future.
To fix this, we can include the following in the project file:
<DriverSign>
<FileDigestAlgorithm>SHA256</FileDigestAlgorithm>
</DriverSign>
Or set the above, using project 'Properties'->Driver Signing->File
Digest Algorithm = 256.
(This will need to be fixed in the netuio driver project also)
thanks,
ranjit m.
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