diff options
| author | Christoph Muellner <cmuellner@linux.com> | 2021-04-06 03:53:54 +0200 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-04-09 18:48:50 +0530 |
| commit | 4d8e2f135d659697337f8d4a33fec60cd475f0dc (patch) | |
| tree | 9f1bd8ef91f5b6a52123db13b5f80437e62ba197 /docs/platform | |
| parent | d0e406fa44a108210d29b26281777206961cd772 (diff) | |
lib: sbi: Replace test-and-set locks by ticket locks
Replace the test-and-set spinlock implementation with ticket locks
in order to get fairness (in form of FIFO order).
The implementation uses a 32-bit wide struct, which consists of
two 16-bit counters (owner and next). This is inspired by similar
spinlock implementations on other architectures.
This allows that the code works for both, RV32 and RV64.
Signed-off-by: Christoph Muellner <cmuellner@linux.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Diffstat (limited to 'docs/platform')
0 files changed, 0 insertions, 0 deletions