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* torture: Avoid script syntax error when insufficient CPUsPaul E. McKenney2015-03-03
| | | | | | | Parentheses are special to bash, so use an overflow flag that doesn't use them. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
*-. Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', ↵Paul E. McKenney2015-01-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD doc.2015.01.07a: Documentation updates. fixes.2015.01.15a: Miscellaneous fixes. preempt.2015.01.06a: Changes to handling of lists of preempted tasks. srcu.2015.01.06a: SRCU updates. stall.2015.01.16a: RCU CPU stall-warning updates and fixes. torture.2015.01.11a: RCU torture-test updates and fixes.
| | * torture: Flag console.log file to prevent holdovers from earlier runsPaul E. McKenney2015-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A system misconfiguration that prevents qemu from running at all (for example, a missing dynamically linked library) will keep the console.log file from the previous run. This can fool the developer into thinking that this failed run actually completed correctly. This commit therefore overwrites the console.log file just before launching qemu. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * torture: Add "-enable-kvm -soundhw pcspk" to qemu command linePaul E. McKenney2015-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | More recent qemu implementations really want "-enable-kvm", and the "-soundhw pcspk" makes the script a bit less dependent on odd audio libraries being installed. This commit therefore adds both to the default qemu command line. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * rcutorture: Handle different mpstat versionsPaul E. McKenney2015-01-10
| | | | | | | | | | | | | | | | | | | | | | | | The mpstat command recently added the %gnice column, which messes up the cpu2use.sh script's idle-CPU calculations. This commit therefore uses $NF instead of $12 to select the last (%idle) column. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * rcutorture: Make build-output parsing correctly flag RCU's warningsPaul E. McKenney2015-01-10
| | | | | | | | | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * rcutorture: Issue warnings on close calls due to Reader Batch blowsPaul E. McKenney2015-01-10
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Normal rcutorture checking overestimates grace periods somewhat due to the fact that there is a delay from a grace-period request until the start of the corresponding grace period and another delay from the end of that grace period to notification of the requestor. This means that rcutorture's detection of RCU bugs is less sensitive than it might be. It turns out that rcutorture also checks the underlying grace-period "completed" counter (displayed in Reader Batch output), which in theory allows rcutorture to do exact checks. In practice, memory misordering (by both compiler and CPU) can result in false positives. However, experience on x86 shows that these false positives are quite rare, occurring less than one time per 1,000 hours of testing. This commit therefore does the exact checking, giving a warning if any Reader Batch blows happen, and flagging an error if they happen more often than once every three hours in long tests. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * rcutorture: Add checks for stall ending before dump startPaul E. McKenney2015-01-06
|/ | | | | | | | The current rcutorture scripting checks for actual stalls (via the "Call Trace:" check), but fails to spot the case where a stall ends just as it is being detected. This commit therefore adds a check for this case. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* rcutorture: Remove obsolete kversion param in kvm.shPranith Kumar2014-11-03
| | | | | | | | | Now that we have removed configs based on kernel version, we can also remove the kversion parameter in kvm.sh. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* torture: Run Linux-kernel binary out of results directoryPaul E. McKenney2014-11-03
| | | | | | | | | | | | The rcutorture scripts create a qemu-cmd script containing the actual qemu command. However, this command references the build directory, which will be overwritten by later builds. This commit therefore runs the kernel out of the results directory so that less hand-editing is required to re-run a previous test. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Check for nul bytes in console outputPaul E. McKenney2014-09-07
| | | | | | | | | | | | When starting a new torture run while an old one is still running, both qemu processes can be outputting to the same console.out file. This can cause quite a bit of confusion, so this commit checks for this situation, which is normally indicated by nul bytes in the console output. Yes, if your new run uses up an exact number of blocks of the file, this check will be ineffective, but the odds are not bad. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
* torture: Print PID in hung-kernel diagnostic messagePaul E. McKenney2014-09-07
| | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
* rcutorture: Specify MAXSMP=y for TREE01Paul E. McKenney2014-09-07
| | | | | | | | | | | | Setting CONFIG_MAXSMP=y causes cpumasks to be moved offstack, which introduces the possibility of NULL cpumask_var_t pointers. This commit therefore enables CONFIG_MAXSMP=y in TREE01 to increase test coverage. However, because CONFIG_MAXSMP=y implies 8192 CPUs, we need to use the maxcpus= boot parameter to limit the number of CPUs to something reasonable, which in turn requires updating the scripts to handle this. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
* rcutorture: Set executable bit and drop bash from UsagePranith Kumar2014-09-07
| | | | | | | | | | This commit sets the executable bit on test scripts config2frag.sh and kvm.sh. Since #!/bin/bash is set in all the scripts, this commit also drops it from all usage lines because the scripts can now all be invoked directly. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* rcutorture: Use bash shell for all the test scriptsPranith Kumar2014-09-07
| | | | | | | | | | | | Some of the scripts encode a default /bin/sh shell. On systems which use dash as default shell, these scripts fail as they are bash scripts. I encountered this while testing the sprintf() changes on a Debian system where dash is the default shell. This commit changes all such uses to use bash explicitly. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* torture: Clean up diagnostics from --buildonly runsPaul E. McKenney2014-06-26
| | | | | | | | | Currently the post-processing complains about the lack of rcutorture output when --buildonly is set and also emits misleading messages about kernels being started and finishing. This commit suppresses these complaints and messages. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* torture: Enable versions without CFcommon to function correctlyPaul E. McKenney2014-06-26
| | | | | | | | | The CFcommon file must now be present, which makes using the current scripts against old kernel versions cumbersome. This commit therefore makes the CFcommon file be optional, so that old kernel versions can be used with current torture scripts. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* rcutorture: Note diffs from git commitsPaul E. McKenney2014-05-14
| | | | | | | | | | | The current scripting only keeps track of the git SHA-1 of the current HEAD. This can cause confusion in cases where testing ran in a git tree where changes had not yet been checked in. This commit therefore also records the output of "git diff HEAD" to provide the information needed to reconstruct the source tree that was tested. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Use elapsed time to detect hangsPaul E. McKenney2014-05-14
| | | | | | | | | | The kvm-test-1-run.sh currently counts "sleep 1" commands to detect hangs. This can fail spectacularly on busy systems, where "sleep 1" might take far longer than one second to complete. This commit therefore changes hang detection to use elapsed time measurements. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Better summary diagnostics for build failuresPaul E. McKenney2014-05-14
| | | | | | | | | | | | The reaction of kvm-recheck.sh is obscure at best, and easy to miss completely. This commit therefore prints "BUG: Build failed" in the summary at the end of a run. This commit also adds the line of dashes in cases where performance info is not available, and also avoids printing nonsense diagnostics in cases where some of the normal test output is not available. In addition, this commit saves off the .config file even when the build fails. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* torture: Choose bzImage location based on architecturePaul E. McKenney2014-05-14
| | | | | | | | | | | | | | | | Currently, the scripts hard-code arch/x86/boot/bzImage, which does not work well for other architectures. This commit therefore provides a identify_boot_image function that selects the correct bzImage location relative to the top of the Linux source tree. This commit also adds a --bootimage argument that allows selecting some other file, for example, "vmlinux". This change requires that the definition of the QEMU variable be computed earlier in order to identify where to look for the boot image when it comes time to copy it to the results directory. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Permit multi-word qemu and boot argumentsPaul E. McKenney2014-05-14
| | | | | | | | This commit applies quotes to permit multi-word --qemu-args and --bootargs arguments. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Report diagnostics from qemuPaul E. McKenney2014-05-14
| | | | | | | | | | | The current script does record qemu diagnostics, but the user has to know where to look for them. This commit therefore puts them into the Warnings file so that kvm-recheck.sh will display them. This change is especially useful if you are in the habit of killing the qemu process when you realize that you messed something up, but then later on wonder why the process terminated early. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
* torture: Make "--dryrun script" use same environment as normal runPaul E. McKenney2014-05-14
| | | | | | | | | | | | | | | In a normal torture-test run, the script inherits its environment variables, but this does not work when producing a script that is to run later. Therefore, definitions and exports are prepended to a dryrun script but not to a script that is run immediately. This commit reconciles this by placing definitions and exports at the beginning of the script in both cases. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Conflicts: tools/testing/selftests/rcutorture/bin/kvm.sh
* torture: Make "--dryrun script" output self-sufficientPaul E. McKenney2014-05-14
| | | | | | | | | | The scripts produced by kvm.sh's "--dryrun script" argument were intended for debugging rather than to run, but it is easier to debug if the script output matches exactly what is run. This commit therefore makes this script runnable. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Make config-fragment filtering RCU-independentPaul E. McKenney2014-05-14
| | | | | | | | | | | | The torture tests need to set specific values for their respective Kconfig options (e.g., CONFIG_LOCK_TORTURE_TEST), and must therefore filter any conflicting definitions from the Kconfig fragment file. Unfortunately, the code in kvm-build.sh was looking only for CONFIG_RCU_TORTURE_TEST. This commit therefore handles the general case of CONFIG_[A-Z]*_TORTURE_TEST. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_QEMU_CMD to TORTURE_QEMU_CMDPaul E. McKenney2014-05-14
| | | | | | | | This commit makes the torture scripts a bit more RCU-independent. It also removes a redundant export of this same shell variable. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_QEMU_ARG to TORTURE_QEMU_ARGPaul E. McKenney2014-05-14
| | | | | | | This commit makes the torture scripts a bit more RCU-independent. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_QEMU_MAC to TORTURE_QEMU_MACPaul E. McKenney2014-05-14
| | | | | | | | This commit makes the torture scripts a bit more RCU-independent. It also drops an redundant "export" statement. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_QEMU_INTERACTIVE to TORTURE_QEMU_INTERACTIVEPaul E. McKenney2014-05-14
| | | | | | | This commit makes the torture scripts a bit more RCU-independent. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_BUILDONLY to TORTURE_BUILDONLYPaul E. McKenney2014-05-14
| | | | | | | | | This commit makes the torture scripts a bit more RCU-independent by changing RCU_BUILDONLY to TORTURE_BUILDONLY. It also removes an unnecessary export command. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_BOOTARGS to TORTURE_BOOTARGSPaul E. McKenney2014-05-14
| | | | | | | This commit makes the torture scripts a bit more RCU-independent. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_KMAKE_ARG to TORTURE_KMAKE_ARGPaul E. McKenney2014-05-14
| | | | | | | | | This commit makes the torture scripts a bit more RCU-independent by changing RCU_KMAKE_ARG to TORTURE_KMAKE_ARG. It also removes the unnecessary export command. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Allow variations of "defconfig" to be specifiedPaul E. McKenney2014-05-14
| | | | | | | | | Some environments require some variation on "make defconfig" to initialize the .config file. This commit therefore adds a --defconfig argument to allow this to be specified. The default value is of course "defconfig". Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Rename RCU_INITRD to TORTURE_INITRDPaul E. McKenney2014-05-13
| | | | | | | This commit makes the torture scripts a bit more RCU-independent. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Make parse-rcutorture.sh less RCU-specificPaul E. McKenney2014-05-13
| | | | | | | | | It can be a bit jarring to see a locking test complain about RCU, so this commit renames parse-rcutorture.sh to parse-torture.sh and makes the messages it emits more generic. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Add batch headers "--dryrun sched"Paul E. McKenney2014-05-13
| | | | | | | | This commit makes the output of "--dryrun sched" more user-friendly, clearly indicating the batch starts. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* torture: Remove obsolete builddir optionsPaul E. McKenney2014-05-13
| | | | | | | | | | | The --builddir and --relbuilddir options were initially intended to handle parallel tests. However, since commit 43e38ab3d518 (Enable concurrent rcutorture runs), the script manages multiple build directories as needed for parallel testing. This commit therefore removes these two obsolete options. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Save kvm.sh output to logPaul E. McKenney2014-02-23
| | | | | | | | This commit logs the progress text that kvm.sh outputs, improving after-the-fact troubleshooting. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Place kvm-test-1-run.sh output into res directoryPaul E. McKenney2014-02-23
| | | | | | | | | | | The output of each kvm-test-1-run.sh script is placed into a file whose name parallels that of the build directory. This means that the kvm-test-1-run.sh output is overwritten by later run. This commit therefore places the kvm-test-1-run.sh output into the per-test-case directory in the "res" hierarchy. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* locktorture: Add kvm-recheck.sh plug-in for locktorturePaul E. McKenney2014-02-23
| | | | | | | | This commit adds the kvm-recheck-lock.sh plug-in for locktorture to print out lock-specific progress statistics. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* locktorture: Add vestigial locktorture configurationPaul E. McKenney2014-02-23
| | | | | | | | This commit adds a trivial set of configuration files for lock torturing. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Introduce "rcu" directory level underneath configsPaul E. McKenney2014-02-23
| | | | | | | | | | | This commit uses the standard software ploy of introducing another level of indirection below the configs directory. This allows each torture-test suite to have its own set of Kconfig files, boot parameters, and version-specific scripts. Initially, we have only rcu, but lock will follow soonish. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Rename kvm-test-1-rcu.shPaul E. McKenney2014-02-23
| | | | | | | | The kvm-test-1-rcu.sh is not specific to RCU, so this commit renames it to kvm-test-1-run.sh. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Remove RCU dependencies from ver_functions.sh APIPaul E. McKenney2014-02-23
| | | | | | | | | | | The current set of functions in ver_functions.sh have APIs that are specific to RCU. This commit therefore makes an RCU-independent function that outputs version-specific boot arguments. This has the benefit that a test-type-independent call in kvm-test-1-rcu.sh can now handle any type of test, given a test-type-specific set of files in a configs directory. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Create CFcommon file for common Kconfig parametersPaul E. McKenney2014-02-23
| | | | | | | | | | | | Currently, CONFIG_RCU_TORTURE_TEST=y is hardcoded into the kvm-test-1-rcu.sh script and CONFIG_PRINTK_TIME=y is mentioned in each and every configs file. This commit creates a CFcommon file for these two Kconfig parameters, and modifies kvm-test-1-rcu.sh to copy this new file into the .config file during the build. This change will allow these scripts to operate on torture types other than just rcutorture. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Abstract kvm-recheck.shPaul E. McKenney2014-02-23
| | | | | | | | This commit creates a plug-in to allow kvm-recheck.sh to process non-rcutorture console output. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Print dates when doing parallel rcutorture runsPaul E. McKenney2014-02-23
| | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* rcutorture: Don't create results directory for dryrunsPaul E. McKenney2014-02-23
| | | | | | | | | This commit prevents the results directory from being created for dryruns. However, a script generated from a dryrun will create the results directory should it be run. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org
* rcutorture: Print results directory when dumping resultsPaul E. McKenney2014-02-18
| | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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