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| author | Eric Dumazet <edumazet@google.com> | 2021-04-13 13:33:50 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-04-14 18:04:09 +0200 |
| commit | 60af388d23889636011488c42763876bcdda3eab (patch) | |
| tree | 9fa22b294c260a515a6243a3cc77090b79ec5ec5 /crypto/ecrdsa_params.asn1 | |
| parent | 4bad58ebc8bc4f20d89cff95417c9b4674769709 (diff) | |
rseq: Optimize rseq_update_cpu_id()
Two put_user() in rseq_update_cpu_id() are replaced
by a pair of unsafe_put_user() with appropriate surroundings.
This removes one stac/clac pair on x86 in fast path.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lkml.kernel.org/r/20210413203352.71350-2-eric.dumazet@gmail.com
Diffstat (limited to 'crypto/ecrdsa_params.asn1')
0 files changed, 0 insertions, 0 deletions