On 01/05/2015 01:28 PM, Shuah Khan wrote: > On 12/31/2014 07:31 PM, Tim Bird wrote: ... >> The install phase is desperately needed for usage of kselftest in >> cross-target situations (applicable to almost all embedded). So this >> is great stuff. > > Thanks. > >> >> I worked a bit on isolating the install stuff to a makefile include file. >> This allows simplifying some of the sub-level Makefiles a bit, and allowing >> control of some of the install and run logic in less places. >> >> This is still a work in progress, but before I got too far along, I wanted >> to post it for people to provide feedback. A couple of problems cropped >> up that are worth discussing, IMHO. >> >> 1) I think it should be a requirement that each test has a single >> "main" program to execute to run the tests. If multiple tests are supported >> or more flexibility is desired for additional arguments, or that sort of >> thing, then that's fine, but the automated script builder should be able >> to run just a single program or script to have things work. This also >> makes things more consistent. In the case of the firmware test, I created >> a single fw_both.sh script to do this, instead of having two separate >> blocks in the kselftest.sh script. > > It is a good goal for individual tests to use a main program to run > tests, even though, I would not make it a requirement. I would like to > leave that decision up to the individual test writer. > OK. It helps to have a single line when trying to isolate RUN_TEST creation into the include file, but there may be other ways to accomplish this. >> >> 2) I've added a CROSS_INSTALL variable, which can call an arbitrary program >> to place files on the target system (rather than just calling 'install'). >> In my case, I'd use my own 'ttc cp' command, which I can extend as necessary >> to put things on a remote machine. This works for a single directory, >> but things get dicier with sub-directory trees full of files (like >> the ftrace test uses.) >> >> If additional items need to be installed to the target, then maybe a setup >> program should be used, rather than just copying files. >> >> 3) Some of the scripts were using /bin/bash to execute them, rather >> than rely on the interpreter line in the script itself (and having >> the script have executable privileges). Is there a reason for this? >> I modified a few scripts to be executable, and got rid of the >> explicit execution with /bin/bash. > > Probably no reason other than the choice made by the test writer. > It could be cleaned up and made consistent, however, I would see > this as a separate enhancement type work that could be done on its > own and not include it in the install work. OK - this was also something that simplified the creation of the RUN_TEST variable in the isolated include file. Also, having the interpreter explicit in the invocation line in the Makefile as well as in the script itself is a bit redundant. >> >> The following is just a start... Let me know if this direction looks >> OK, and I'll finish this up. The main item to look at is >> kselftest.include file. Note that these patches are based on Shuah's >> series - but if you want to use these ideas I can rebase them onto >> mainline, and break them out per test sub-level like Shuah did. > > One of the reasons I picked install target approach is to enable the > feature by extending the existing run_tests support. This way we will > have the feature available quickly. Once that is supported, we can work > on evolving to a generic approach to use the include file approach, as > the changes you are proposing are based on the the series I sent out, > and makes improvements to it. > > kselftest.include file approach could work for several tests and tests > that can't use the generic could add their own install support. > > I propose evolving to a generic kselftest.include as the second step in > evolving the install feature. Can I count on you do the work and update > the tests to use kselftest.include, CROSS_INSTALL variable support? Yes. I'd be happy to evolve it through phases to support the include file and cross-target install feature. Is there anything I can help with in the mean time? Some of the tests require a directory tree of files rather than just a few top-level files (e.g. ftrace). I was thinking about doing some work to tar-ify the needed directories of data files during build, and untar it in the execution area during the install step. Do you want me to propose something there? -- Tim -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
