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0b707e572a
- Add support for ftrace with direct call and ftrace direct call samples. - Add support for kernel command lines longer than current 896 bytes and make its length configurable. - Add support for BEAR enhancement facility to improve last breaking event instruction tracking. - Add kprobes sanity checks and testcases to prevent kprobe in the mid of an instruction. - Allow concurrent access to /dev/hwc for the CPUMF users. - Various ftrace / jump label improvements. - Convert unwinder tests to KUnit. - Add s390_iommu_aperture kernel parameter to tweak the limits on concurrently usable DMA mappings. - Add ap.useirq AP module option which can be used to disable interrupt use. - Add add_disk() error handling support to block device drivers. - Drop arch specific and use generic implementation of strlcpy and strrchr. - Several __pa/__va usages fixes. - Various cio, crypto, pci, kernel doc and other small fixes and improvements all over the code. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmGFW6EACgkQjYWKoQLX FBg20Qf/UbohgnKnE6vxbbH3sNTlI2dk3Cw4z3IobcsZgqXAu6AFLgLQGLk/X07F DIyUdrgSgCzLIEKLqrLrFXIOMIK44zAGaurIltNt7IrnWWlA+/YVD+YeL2gHwccq wT7KXRcrVMZQ1z18djJQ45DpPUC8ErBdL6+P+ftHck90YGFZsfMA5S7jf8X1h08U IlqdPTmY8t4unKHWVpHbxx9b+xrUuV6KTEXADsllpMV2jQoTLdDECd3vmefYR6tR 3lssgop1m/RzH5OCqvia5Sy2D5fOQObNWDMakwOkVMxOD43lmGCTHstzS2Uo2OFE QcY79lfZ5NrzKnenUdE5Fd0XJ9kSwQ== =k0Ab -----END PGP SIGNATURE----- Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for ftrace with direct call and ftrace direct call samples. - Add support for kernel command lines longer than current 896 bytes and make its length configurable. - Add support for BEAR enhancement facility to improve last breaking event instruction tracking. - Add kprobes sanity checks and testcases to prevent kprobe in the mid of an instruction. - Allow concurrent access to /dev/hwc for the CPUMF users. - Various ftrace / jump label improvements. - Convert unwinder tests to KUnit. - Add s390_iommu_aperture kernel parameter to tweak the limits on concurrently usable DMA mappings. - Add ap.useirq AP module option which can be used to disable interrupt use. - Add add_disk() error handling support to block device drivers. - Drop arch specific and use generic implementation of strlcpy and strrchr. - Several __pa/__va usages fixes. - Various cio, crypto, pci, kernel doc and other small fixes and improvements all over the code. [ Merge fixup as per https://lore.kernel.org/all/YXAqZ%2FEszRisunQw@osiris/ ] * tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (63 commits) s390: make command line configurable s390: support command lines longer than 896 bytes s390/kexec_file: move kernel image size check s390/pci: add s390_iommu_aperture kernel parameter s390/spinlock: remove incorrect kernel doc indicator s390/string: use generic strlcpy s390/string: use generic strrchr s390/ap: function rework based on compiler warning s390/cio: make ccw_device_dma_* more robust s390/vfio-ap: s390/crypto: fix all kernel-doc warnings s390/hmcdrv: fix kernel doc comments s390/ap: new module option ap.useirq s390/cpumf: Allow multiple processes to access /dev/hwc s390/bitops: return true/false (not 1/0) from bool functions s390: add support for BEAR enhancement facility s390: introduce nospec_uses_trampoline() s390: rename last_break to pgm_last_break s390/ptrace: add last_break member to pt_regs s390/sclp: sort out physical vs virtual pointers usage s390/setup: convert start and end initrd pointers to virtual ... |
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ftracetest | ||
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README | ||
settings |
Linux Ftrace Testcases This is a collection of testcases for ftrace tracing feature in the Linux kernel. Since ftrace exports interfaces via the debugfs, we just need shell scripts for testing. Feel free to add new test cases. Running the ftrace testcases ============================ At first, you need to be the root user to run this script. To run all testcases: $ sudo ./ftracetest To run specific testcases: # ./ftracetest test.d/basic3.tc Or you can also run testcases under given directory: # ./ftracetest test.d/kprobe/ Contributing new testcases ========================== Copy test.d/template to your testcase (whose filename must have *.tc extension) and rewrite the test description line. * The working directory of the script is <debugfs>/tracing/. * Take care with side effects as the tests are run with root privilege. * The tests should not run for a long period of time (more than 1 min.) These are to be unit tests. * You can add a directory for your testcases under test.d/ if needed. * The test cases should run on dash (busybox shell) for testing on minimal cross-build environments. * Note that the tests are run with "set -e" (errexit) option. If any command fails, the test will be terminated immediately. * The tests can return some result codes instead of pass or fail by using exit_unresolved, exit_untested, exit_unsupported and exit_xfail. Result code =========== Ftracetest supports following result codes. * PASS: The test succeeded as expected. The test which exits with 0 is counted as passed test. * FAIL: The test failed, but was expected to succeed. The test which exits with !0 is counted as failed test. * UNRESOLVED: The test produced unclear or intermidiate results. for example, the test was interrupted or the test depends on a previous test, which failed. or the test was set up incorrectly The test which is in above situation, must call exit_unresolved. * UNTESTED: The test was not run, currently just a placeholder. In this case, the test must call exit_untested. * UNSUPPORTED: The test failed because of lack of feature. In this case, the test must call exit_unsupported. * XFAIL: The test failed, and was expected to fail. To return XFAIL, call exit_xfail from the test. There are some sample test scripts for result code under samples/. You can also run samples as below: # ./ftracetest samples/ TODO ==== * Fancy colored output :)