linux-kernel - Re: [ANNOUNCE] Kconfiglib menuconfig implementation

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Date:   Sun, 20 May 2018 19:45:22 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Ulf Magnusson <ulfalizer@...il.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [ANNOUNCE] Kconfiglib menuconfig implementation

On 05/19/2018 09:47 PM, Ulf Magnusson wrote:
> On Sun, May 20, 2018 at 6:03 AM, Randy Dunlap <rdunlap@...radead.org> wrote:
>> On 05/19/2018 08:45 PM, Randy Dunlap wrote:
>>> On 05/08/2018 09:59 AM, Ulf Magnusson wrote:
>>>> Hello,
>>>>
>>>> I've added incremental search for jumping directly to a symbol now.
>>>> Regular expressions are supported as well.
>>>>
>>>> Some screenshots below:
>>>>
>>>> https://raw.githubusercontent.com/ulfalizer/Kconfiglib/screenshots/screenshots/ss10.png
>>>> https://raw.githubusercontent.com/ulfalizer/Kconfiglib/screenshots/screenshots/ss11.png
>>>> https://raw.githubusercontent.com/ulfalizer/Kconfiglib/screenshots/screenshots/ss13.png
>>>>
>>>> The last screenshot shows how things might look after you jump to a
>>>> symbol. The jumped-to symbol wasn't visible in this case, so show-all
>>>> mode was turned on automatically.
>>>
>>> Hi Ulf,
>>>
>>>
>>>
>>> Hm, OK, I used the trick that you supplied a few weeks ago and I have the UI now.
>>>
>>>     ARCH=x86 SRCARCH=x86 KERNELVERSION=`make kernelversion` \
>>>         Kconfiglib/menuconfig.py
>>>
>>> so yes, a real Makefile target would be nice. :)
>>
>> I want to see all kconfig symbols that end with "_DEBUG" (so excluding
>> _DEBUGFS).  Using:
>>
>> /.*_DEBUG$
>>
>> shows me 6 symbols:
>> ATH9K_COMMON_DEBUG
>> DVB_B2C2_FLEXCOP_DEBUG
>> HAVE_DMA_API_DEBUG
>> IP_DCCP_TFRC_DEBUG
>> NFS_DEBUG
>> PM_SLEEP_DEBUG
>>
>> so where are the other (approx.) 176?
>> see:
>> $ find . -name Kconfig\* | xargs grep "config.*_DEBUG$" | grep -v \.orig | wc
>>     182     364    9179
>>
>>
>> Anyway, something for you to look at. :)
>>
>> --
>> ~Randy
> 
> It's related to how the search is done. Searching for "DEBUG\b" (word
> boundary) instead will find all of them.
> 
> A string is generated for each symbol. For symbols with prompts, this
> string includes the prompt as well, so you get e.g.
> 
>     AB8500_DEBUG "Enable debug info via debugfs"
> 
> Those strings are then searched/displayed.
> 
> What you got with your search was all symbols whose names end in
> "_DEBUG" that don't have a prompt.
> 
> The nice thing about searching both the name and the prompt is that
> e.g. "debugfs ab8500" will find the symbol above. I'm also planning to
> add menus to the search, by generating 'menu: "menu title"' strings
> for them.
> 
> It's a bit awkward/unintuitive that what you tried doesn't work
> though. Maybe the symbol name could be searched separately from the
> prompt, though I'd be a bit sad to abandon the super simple
> single-string-per-entry implementation approach. :)

Hi Ulf,

What else are you planning to do with /(search)?


/syscall lists 20 or so symbols. It would be nice if each one of those
showed its current setting [y,n,maybe^Wm].


I like Toggle show-all mode.  When I use xconfig, I usually turn on most
of its options, including one like that.

-- 
~Randy