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WPP during boot by AutoLogger

weilin_jiangweilin_jiang Member - All Emails Posts: 75

I use WDK demo [tracedrv] , and set it to AutoLogger . The .etl file is created correctly but there are not have any log in it.
The problem is the same as described on this(https://community.osr.com/discussion/245267) website.

What settins are missing ?

Comments

  • reuvenabreuvenab Member Posts: 1

    Did you stop/flush trace session?

  • Scott_Noone_(OSR)Scott_Noone_(OSR) Administrator Posts: 3,299

    I think you also need EnableFlags set (try 3 based on the flags defined in the sample). Also, make sure the driver is actually generating messages during boot. Looks to me like the sample only generates messages when it receives a particular IOCTL.

    -scott
    OSR

  • weilin_jiangweilin_jiang Member - All Emails Posts: 75

    @Scott_Noone_(OSR) said:
    I think you also need EnableFlags set (try 3 based on the flags defined in the sample). Also, make sure the driver is actually generating messages during boot. Looks to me like the sample only generates messages when it receives a particular IOCTL.

    Has been resolved. Thanks~

  • Scott_Noone_(OSR)Scott_Noone_(OSR) Administrator Posts: 3,299

    Great! Care to share the details to help out the next person?

    -scott
    OSR

  • weilin_jiangweilin_jiang Member - All Emails Posts: 75

    @Scott_Noone_(OSR) said:
    Great! Care to share the details to help out the next person?

    As you said above,
    Every bits of EnableFlags is assosiated to the definition of WPP_CONTROL_GUIDS
    `

    define WPP_CONTROL_GUIDS \

    WPP_DEFINE_CONTROL_GUID(TraceTest,(d58c126f, b309, 11d1, 969e, 0000f875a5bc),  \
        WPP_DEFINE_BIT(FLAG_ONE)                \
        WPP_DEFINE_BIT(FLAG_TWO) )
    

    `
    The first bit of EnableFlags indicates the FLAG_ONE and so on.

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