kernel/linux.git/tools/testing/selftests/powerpc, branch v4.17.5

selftests/powerpc: Fix copyloops build since Power4 assembler change

2018-04-03T11:50:09+00:00

The recent commit 15a3204d24a3 ("powerpc/64s: Set assembler machine type to POWER4") set the machine type in our ASFLAGS when building the kernel, and removed some ".machine power4" directives from various asm files. This broke the selftests build on old toolchains (that don't assume Power4), because we build the kernel source files into the selftests using different ASFLAGS. The fix is simply to add -mpower4 to the selftest ASFLAGS as well. Fixes: 15a3204d24a3 ("powerpc/64s: Set assembler machine type to POWER4") Signed-off-by: Michael Ellerman

Merge branch 'fixes' into next

2018-03-28T11:59:50+00:00

Merge our fixes branch from the 4.16 cycle. There were a number of important fixes merged, in particular some Power9 workarounds that we want in next for testing purposes. There's also been some conflicting changes in the CPU features code which are best merged and tested before going upstream.

selftests/powerpc: Add process creation benchmark

2018-03-20T05:47:54+00:00

Signed-off-by: Nicholas Piggin [mpe: Add SPDX, and fixup formatting] Signed-off-by: Michael Ellerman

selftests/powerpc: Skip tm-unavailable if TM is not enabled

2018-03-13T04:10:15+00:00

Some processor revisions do not support transactional memory, and additionally kernel support can be disabled. In either case the tm-unavailable test should be skipped, otherwise it will fail with a SIGILL. That commit also sets this selftest to be called through the test harness as it's done for other TM selftests. Finally, it avoids using "ping" as a thread name since it's ambiguous and can be confusing when shown, for instance, in a kernel backtrace log. Fixes: 77fad8bfb1d2 ("selftests/powerpc: Check FP/VEC on exception in TM") Signed-off-by: Gustavo Romero Reviewed-by: Cyril Bur Signed-off-by: Michael Ellerman

selftest/powerpc: Add test for sigreturn in transaction

2018-03-13T04:10:14+00:00

Ensure that kernel is throwing away the suspended transaction when sigreturn() is called otherwise it if fails to restore the signal frame's TM SPRS. Signed-off-by: Laurent Dufour Reviewed-by: Cyril Bur [mpe: Add have_htm() check, minor formatting, add SPDX tag] Signed-off-by: Michael Ellerman

selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable

2018-03-02T00:37:04+00:00

The subpage_prot syscall is only functional when the system is using the Hash MMU. Since commit 5b2b80714796 ("powerpc/mm: Invalidate subpage_prot() system call on radix platforms") it returns ENOENT when the Radix MMU is active. Currently this just makes the test fail. Additionally the syscall is not available if the kernel is built with 4K pages, or if CONFIG_PPC_SUBPAGE_PROT=n, in which case it returns ENOSYS because the syscall is missing entirely. So check explicitly for ENOENT and ENOSYS and skip if we see either of those. Signed-off-by: Michael Ellerman

selftests/powerpc: Fix missing clean of pmu/lib.o

2018-02-28T11:28:35+00:00

The tm-resched-dscr test links against pmu/lib.o, but we don't have a rule to clean pmu/lib.o. This can lead to a build break if you build for big endian and then little, or vice versa. Fix it by making tm-resched-dscr depend on pmu/lib.c, causing the code to be built directly in, meaning no .o is generated. Signed-off-by: Michael Ellerman

selftests/powerpc: Skip tm-trap if transactional memory is not enabled

2018-02-26T02:18:25+00:00

Some processor revisions do not support transactional memory, and additionally kernel support can be disabled. In either case the tm-trap test should be skipped, otherwise it will fail with a SIGILL. Fixes: a08082f8e4e1 ("powerpc/selftests: Check endianness on trap in TM") Signed-off-by: Michael Ellerman

selftests/powerpc: Fix to use ucontext_t instead of struct ucontext

2018-02-13T11:44:18+00:00

With glibc 2.26 'struct ucontext' is removed to improve POSIX compliance, which breaks powerpc/alignment_handler selftest. Fix the test by using ucontext_t. Tested on ppc, works with older glibc versions as well. Fixes the following: alignment_handler.c: In function ‘sighandler’: alignment_handler.c:68:5: error: dereferencing pointer to incomplete type ‘struct ucontext’ ucp->uc_mcontext.gp_regs[PT_NIP] += 4; Signed-off-by: Harish Signed-off-by: Michael Ellerman

powerpc/selftests: Check endianness on trap in TM

2018-01-21T18:48:37+00:00

Add a selftest to check if endianness is flipped inadvertently to BE (MSR.LE set to zero) on BE and LE machines when a trap is caught in transactional mode and load_fp and load_vec are zero, i.e. when MSR.FP and MSR.VEC are zeroed (disabled). Signed-off-by: Gustavo Romero Signed-off-by: Michael Ellerman