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| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2022-01-24 12:12:42 -0500 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-02-02 13:11:34 +0100 |
| commit | 94b80a19ebfe347a01301d750040a61c38200e2b (patch) | |
| tree | 6379b75274ddf02fd73ce5b84f5100e41bbaa34c /tools/testing/selftests/rseq/rseq.c | |
| parent | 930378d056eac2c96407b02aafe4938d0ac9cc37 (diff) | |
| download | linux-next-94b80a19ebfe347a01301d750040a61c38200e2b.tar.gz linux-next-94b80a19ebfe347a01301d750040a61c38200e2b.zip | |
selftests/rseq: Remove volatile from __rseq_abi
This is done in preparation for the selftest uplift to become compatible
with glibc-2.35.
All accesses to the __rseq_abi fields are volatile, but remove the
volatile from the TLS variable declaration, otherwise we are stuck with
volatile for the upcoming rseq_get_abi() helper.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220124171253.22072-5-mathieu.desnoyers@efficios.com
Diffstat (limited to 'tools/testing/selftests/rseq/rseq.c')
| -rw-r--r-- | tools/testing/selftests/rseq/rseq.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/rseq/rseq.c b/tools/testing/selftests/rseq/rseq.c index bfe1b2692ffc..1f905b60728a 100644 --- a/tools/testing/selftests/rseq/rseq.c +++ b/tools/testing/selftests/rseq/rseq.c @@ -30,7 +30,7 @@ #include "../kselftest.h" #include "rseq.h" -__thread volatile struct rseq_abi __rseq_abi = { +__thread struct rseq_abi __rseq_abi = { .cpu_id = RSEQ_ABI_CPU_ID_UNINITIALIZED, }; @@ -92,7 +92,7 @@ int rseq_register_current_thread(void) goto end; } if (errno != EBUSY) - __rseq_abi.cpu_id = RSEQ_ABI_CPU_ID_REGISTRATION_FAILED; + RSEQ_WRITE_ONCE(__rseq_abi.cpu_id, RSEQ_ABI_CPU_ID_REGISTRATION_FAILED); ret = -1; __rseq_refcount--; end: |