kernel/tools/testing/selftests/powerpc/ptrace, branch linux-rolling-stable

selftests/powerpc: Use PKEY_UNRESTRICTED macro

2025-02-17T18:16:36Z

Replace literal 0 with macro PKEY_UNRESTRICTED where pkey_*() functions are used in mm selftests for memory protection keys for ppc target. Signed-off-by: Yury Khrustalev Suggested-by: Kevin Brodsky Reviewed-by: Kevin Brodsky Link: https://lore.kernel.org/r/20250113170619.484698-4-yury.khrustalev@arm.com Signed-off-by: Catalin Marinas

selftest/powerpc/ptrace: Cleanup duplicate macro definitions

2024-12-18T08:10:12Z

Both core-pkey.c and ptrace-pkey.c tests have similar macro definitions, move them to "pkeys.h" and remove the macro definitions from the C file. Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241216160257.87252-3-maddy@linux.ibm.com

selftest/powerpc/ptrace/ptrace-pkey: Remove duplicate macros

2024-12-18T08:10:12Z

./powerpc/ptrace/Makefile includes flags.mk. In flags.mk, -I$(selfdir)/powerpc/include is always included as part of CFLAGS. So it will pick up the "pkeys.h" defined in powerpc/include. ptrace-pkey.c test has macros defined which are part of "pkeys.h" header file. Remove those duplicates and include "pkeys.h" Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241216160257.87252-2-maddy@linux.ibm.com

selftest/powerpc/ptrace/core-pkey: Remove duplicate macros

2024-12-18T08:10:12Z

./powerpc/ptrace/Makefile includes flags.mk. In flags.mk, -I$(selfdir)/powerpc/include is always included as part of CFLAGS. So it will pick up the "pkeys.h" defined in powerpc/include. core-pkey.c test has couple of macros defined which are part of "pkeys.h" header file. Remove those duplicates and include "pkeys.h" Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241216160257.87252-1-maddy@linux.ibm.com

selftests/powerpc: Give all tests 2 minutes timeout

2024-11-07T11:36:30Z

Each of the powerpc selftests runs with a timeout of 2 minutes by default (see tools/testing/selftests/powerpc/harness.c). But when tests are run with run_kselftest.sh it uses a timeout of 45 seconds, meaning some tests run OK standalone but fail when run with the test runner. So tell run_kselftest.sh to give each test 130 seconds, that should allow the tests to complete, or be killed by the powerpc test harness after 2 minutes. If for some reason the harness fails, or for the few tests that don't use the harness, the 130 second timeout should catch them if they get stuck. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-2-mpe@ellerman.id.au

selftests/powerpc: make sub-folders buildable on their own

2024-04-29T13:54:42Z

Build breaks when executing make with run_tests for sub-folders under powerpc. This is because, CFLAGS and GIT_VERSION macros are defined in Makefile of toplevel powerpc folder. make: Entering directory '/home/maddy/linux/tools/testing/selftests/powerpc/mm' gcc hugetlb_vs_thp_test.c ../harness.c ../utils.c -o /home/maddy/selftest_output//hugetlb_vs_thp_test hugetlb_vs_thp_test.c:6:10: fatal error: utils.h: No such file or directory 6 | #include "utils.h" | ^~~~~~~~~ compilation terminated. Fix this by adding the flags.mk in each sub-folder Makefile. Also remove the CFLAGS and GIT_VERSION macros from powerpc/ folder Makefile since the same is definied in flags.mk Signed-off-by: Madhavan Srinivasan Signed-off-by: Michael Ellerman Link: https://msgid.link/20240229093711.581230-3-maddy@linux.ibm.com

selftests/powerpc/ptrace: Update ptrace-perf watchpoint selftest

2023-08-16T13:54:50Z

Now that ptrace and perf are no longer exclusive, update the test to exercise interesting interactions. An assembly file is used for the children to allow precise instruction choice and addresses, while avoiding any compiler quirks. Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20230801011744.153973-7-bgray@linux.ibm.com

selftests/powerpc/ptrace: Declare test temporary variables as volatile

2023-08-02T12:22:19Z

While the target is volatile, the temporary variables used to access the target cast away the volatile. This is undefined behaviour, and a compiler may optimise away/reorder these accesses, breaking the test. This was observed with GCC 13.1.1, but it can be difficult to reproduce because of the dependency on compiler behaviour. Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20230725005841.28854-5-bgray@linux.ibm.com

selftests/powerpc/ptrace: Fix typo in pid_max search error

2023-08-02T12:22:19Z

pid_max_addr() searches for the 'pid_max' symbol in /proc/kallsyms, and prints an error if it cannot find it. The error message has a typo, calling it pix_max. Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20230725005841.28854-4-bgray@linux.ibm.com

selftests/powerpc/ptrace: Explain why tests are skipped

2023-08-02T12:22:19Z

Many tests require specific hardware features/configurations that a typical machine might not have. As a result, it's common to see a test is skipped. But it is tedious to find out why a test is skipped when all it gives is the file location of the skip macro. Convert SKIP_IF() to SKIP_IF_MSG(), with appropriate descriptions of why the test is being skipped. This gives a general idea of why a test is skipped, which can be looked into further if it doesn't make sense. Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20230725005841.28854-3-bgray@linux.ibm.com