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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.h | |
| parent | selftests/rseq: Remove useless assignment to cpu variable (diff) | |
| download | wireguard-linux-94b80a19ebfe347a01301d750040a61c38200e2b.tar.xz wireguard-linux-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.h')
| -rw-r--r-- | tools/testing/selftests/rseq/rseq.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/rseq/rseq.h b/tools/testing/selftests/rseq/rseq.h index cb6bbc53b586..d580f8e9c001 100644 --- a/tools/testing/selftests/rseq/rseq.h +++ b/tools/testing/selftests/rseq/rseq.h @@ -43,7 +43,7 @@ #define RSEQ_INJECT_FAILED #endif -extern __thread volatile struct rseq_abi __rseq_abi; +extern __thread struct rseq_abi __rseq_abi; extern int __rseq_handled; #define rseq_likely(x) __builtin_expect(!!(x), 1) @@ -139,7 +139,7 @@ static inline uint32_t rseq_current_cpu(void) static inline void rseq_clear_rseq_cs(void) { - __rseq_abi.rseq_cs.arch.ptr = 0; + RSEQ_WRITE_ONCE(__rseq_abi.rseq_cs.arch.ptr, 0); } /* |