diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/tm')
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/Makefile | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/tm-sigreturn.c | 92 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/tm-unavailable.c | 24 |
3 files changed, 109 insertions, 9 deletions
diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile index 5c72ff978f27..c0e45d2dde25 100644 --- a/tools/testing/selftests/powerpc/tm/Makefile +++ b/tools/testing/selftests/powerpc/tm/Makefile @@ -4,7 +4,7 @@ SIGNAL_CONTEXT_CHK_TESTS := tm-signal-context-chk-gpr tm-signal-context-chk-fpu TEST_GEN_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack \ tm-vmxcopy tm-fork tm-tar tm-tmspr tm-vmx-unavail tm-unavailable tm-trap \ - $(SIGNAL_CONTEXT_CHK_TESTS) + $(SIGNAL_CONTEXT_CHK_TESTS) tm-sigreturn include ../../lib.mk diff --git a/tools/testing/selftests/powerpc/tm/tm-sigreturn.c b/tools/testing/selftests/powerpc/tm/tm-sigreturn.c new file mode 100644 index 000000000000..85d63449243b --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-sigreturn.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright 2015, Laurent Dufour, IBM Corp. + * + * Test the kernel's signal returning code to check reclaim is done if the + * sigreturn() is called while in a transaction (suspended since active is + * already dropped trough the system call path). + * + * The kernel must discard the transaction when entering sigreturn, since + * restoring the potential TM SPRS from the signal frame is requiring to not be + * in a transaction. + */ + +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "tm.h" +#include "utils.h" + + +void handler(int sig) +{ + uint64_t ret; + + asm __volatile__( + "li 3,1 ;" + "tbegin. ;" + "beq 1f ;" + "li 3,0 ;" + "tsuspend. ;" + "1: ;" + "std%X[ret] 3, %[ret] ;" + : [ret] "=m"(ret) + : + : "memory", "3", "cr0"); + + if (ret) + exit(1); + + /* + * We return from the signal handle while in a suspended transaction + */ +} + + +int tm_sigreturn(void) +{ + struct sigaction sa; + uint64_t ret = 0; + + SKIP_IF(!have_htm()); + + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = handler; + sigemptyset(&sa.sa_mask); + + if (sigaction(SIGSEGV, &sa, NULL)) + exit(1); + + asm __volatile__( + "tbegin. ;" + "beq 1f ;" + "li 3,0 ;" + "std 3,0(3) ;" /* trigger SEGV */ + "li 3,1 ;" + "std%X[ret] 3,%[ret] ;" + "tend. ;" + "b 2f ;" + "1: ;" + "li 3,2 ;" + "std%X[ret] 3,%[ret] ;" + "2: ;" + : [ret] "=m"(ret) + : + : "memory", "3", "cr0"); + + if (ret != 2) + exit(1); + + exit(0); +} + +int main(void) +{ + return test_harness(tm_sigreturn, "tm_sigreturn"); +} diff --git a/tools/testing/selftests/powerpc/tm/tm-unavailable.c b/tools/testing/selftests/powerpc/tm/tm-unavailable.c index e6a0fad2bfd0..156c8e750259 100644 --- a/tools/testing/selftests/powerpc/tm/tm-unavailable.c +++ b/tools/testing/selftests/powerpc/tm/tm-unavailable.c @@ -80,7 +80,7 @@ bool is_failure(uint64_t condition_reg) return ((condition_reg >> 28) & 0xa) == 0xa; } -void *ping(void *input) +void *tm_una_ping(void *input) { /* @@ -280,7 +280,7 @@ void *ping(void *input) } /* Thread to force context switch */ -void *pong(void *not_used) +void *tm_una_pong(void *not_used) { /* Wait thread get its name "pong". */ if (DEBUG) @@ -311,11 +311,11 @@ void test_fp_vec(int fp, int vec, pthread_attr_t *attr) do { int rc; - /* Bind 'ping' to CPU 0, as specified in 'attr'. */ - rc = pthread_create(&t0, attr, ping, (void *) &flags); + /* Bind to CPU 0, as specified in 'attr'. */ + rc = pthread_create(&t0, attr, tm_una_ping, (void *) &flags); if (rc) pr_err(rc, "pthread_create()"); - rc = pthread_setname_np(t0, "ping"); + rc = pthread_setname_np(t0, "tm_una_ping"); if (rc) pr_warn(rc, "pthread_setname_np"); rc = pthread_join(t0, &ret_value); @@ -333,13 +333,15 @@ void test_fp_vec(int fp, int vec, pthread_attr_t *attr) } } -int main(int argc, char **argv) +int tm_unavailable_test(void) { int rc, exception; /* FP = 0, VEC = 1, VSX = 2 */ pthread_t t1; pthread_attr_t attr; cpu_set_t cpuset; + SKIP_IF(!have_htm()); + /* Set only CPU 0 in the mask. Both threads will be bound to CPU 0. */ CPU_ZERO(&cpuset); CPU_SET(0, &cpuset); @@ -354,12 +356,12 @@ int main(int argc, char **argv) if (rc) pr_err(rc, "pthread_attr_setaffinity_np()"); - rc = pthread_create(&t1, &attr /* Bind 'pong' to CPU 0 */, pong, NULL); + rc = pthread_create(&t1, &attr /* Bind to CPU 0 */, tm_una_pong, NULL); if (rc) pr_err(rc, "pthread_create()"); /* Name it for systemtap convenience */ - rc = pthread_setname_np(t1, "pong"); + rc = pthread_setname_np(t1, "tm_una_pong"); if (rc) pr_warn(rc, "pthread_create()"); @@ -394,3 +396,9 @@ int main(int argc, char **argv) exit(0); } } + +int main(int argc, char **argv) +{ + test_harness_set_timeout(220); + return test_harness(tm_unavailable_test, "tm_unavailable_test"); +} |
