From: Eric Dumazet <[email protected]> rseq is a heavy user of copy to/from user data in fast paths. This series tries to reduce the cost.
v3: Third patch going back to v1 (only deal with 64bit arches) v2: Addressed Peter and Mathieu feedbacks, thanks ! Eric Dumazet (3): rseq: optimize rseq_update_cpu_id() rseq: remove redundant access_ok() rseq: optimise rseq_get_rseq_cs() and clear_rseq_cs() kernel/rseq.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) -- 2.31.1.295.g9ea45b61b8-goog
