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linux/tools/testing/selftests/powerpc/tm/Makefile

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selftests/powerpc: Add checks for transactional FPUs in signal contexts If a thread receives a signal while transactional the kernel creates a second context to show the transactional state of the process. This test loads some known values and waits for a signal and confirms that the expected values are in the signal context. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-09-23 06:18:21 +00:00
SIGNAL_CONTEXT_CHK_TESTS := tm-signal-context-chk-gpr tm-signal-context-chk-fpu
selftests/powerpc: Add checks for transactional GPRs in signal contexts If a thread receives a signal while transactional the kernel creates a second context to show the transactional state of the process. This test loads some known values and waits for a signal and confirms that the expected values are in the signal context. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-09-23 06:18:20 +00:00
selftests/powerpc: exec() with suspended transaction Perform an exec() class syscall with a suspended transaction. This is a test for the bug we fixed in 8e96a87c5431 ("powerpc/tm: Always reclaim in start_thread() for exec() class syscalls"). Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Fix build errors, use a single binary for the test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-29 11:41:51 +00:00
TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack \
selftests/powerpc: Add checks for transactional GPRs in signal contexts If a thread receives a signal while transactional the kernel creates a second context to show the transactional state of the process. This test loads some known values and waits for a signal and confirms that the expected values are in the signal context. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-09-23 06:18:20 +00:00
tm-vmxcopy tm-fork tm-tar tm-tmspr $(SIGNAL_CONTEXT_CHK_TESTS)
powerpc: Correct DSCR during TM context switch Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> CC: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-05 06:19:22 +00:00
selftests: Add install support for the powerpc tests The bulk of the selftests are actually below the powerpc sub directory. This adds support for installing them, when on a powerpc machine, or if ARCH and CROSS_COMPILE are set appropriately. This is a little more complicated because of the sub directory structure under powerpc, but much of the common logic in lib.mk is still used. The net effect of the patch is still a reduction in code. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-11 04:06:01 +00:00
all: $(TEST_PROGS)
powerpc: Correct DSCR during TM context switch Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> CC: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-05 06:19:22 +00:00
selftests/powerpc: Skip tm-resched-dscr if we don't have TM Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-12-02 05:00:04 +00:00
$(TEST_PROGS): ../harness.c ../utils.c
powerpc: Correct DSCR during TM context switch Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> CC: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-05 06:19:22 +00:00
selftests/powerpc: exec() with suspended transaction Perform an exec() class syscall with a suspended transaction. This is a test for the bug we fixed in 8e96a87c5431 ("powerpc/tm: Always reclaim in start_thread() for exec() class syscalls"). Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Fix build errors, use a single binary for the test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-29 11:41:51 +00:00
CFLAGS += -mhtm
selftests/powerpc: Skip tm-resched-dscr if we don't have TM Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-12-02 05:00:04 +00:00
tm-syscall: tm-syscall-asm.S
selftests/powerpc: exec() with suspended transaction Perform an exec() class syscall with a suspended transaction. This is a test for the bug we fixed in 8e96a87c5431 ("powerpc/tm: Always reclaim in start_thread() for exec() class syscalls"). Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Fix build errors, use a single binary for the test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-29 11:41:51 +00:00
tm-syscall: CFLAGS += -I../../../../../usr/include
selftests/powerpc: Add test to check if TM SPRs are corrupted Testing that the TM SPRs are behaving the way they should. Uses more threads than cpus to see if the following register values persist with context switching: - the FS (failure summary) flag in TEXASR - TFIAR and TFHAR Signed-off-by: Rashmica Gupta <rashmicy@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-12-23 05:49:54 +00:00
tm-tmspr: CFLAGS += -pthread
selftests/powerpc: Add transactional syscall test Check that a syscall made during an active transaction will fail with the correct failure code and that one made during a suspended transaction will succeed. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-04-10 04:16:49 +00:00
selftests/powerpc: Add checks for transactional GPRs in signal contexts If a thread receives a signal while transactional the kernel creates a second context to show the transactional state of the process. This test loads some known values and waits for a signal and confirms that the expected values are in the signal context. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-09-23 06:18:20 +00:00
$(SIGNAL_CONTEXT_CHK_TESTS): tm-signal.S
$(SIGNAL_CONTEXT_CHK_TESTS): CFLAGS += -mhtm -m64 -mvsx
selftests: Add install support for the powerpc tests The bulk of the selftests are actually below the powerpc sub directory. This adds support for installing them, when on a powerpc machine, or if ARCH and CROSS_COMPILE are set appropriately. This is a little more complicated because of the sub directory structure under powerpc, but much of the common logic in lib.mk is still used. The net effect of the patch is still a reduction in code. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-11 04:06:01 +00:00
include ../../lib.mk
powerpc: Correct DSCR during TM context switch Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> CC: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-05 06:19:22 +00:00
clean:
selftests: Add install support for the powerpc tests The bulk of the selftests are actually below the powerpc sub directory. This adds support for installing them, when on a powerpc machine, or if ARCH and CROSS_COMPILE are set appropriately. This is a little more complicated because of the sub directory structure under powerpc, but much of the common logic in lib.mk is still used. The net effect of the patch is still a reduction in code. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-03-11 04:06:01 +00:00
rm -f $(TEST_PROGS) *.o
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