diff options
| author | Liao Chang <[email protected]> | 2022-09-27 10:24:35 +0800 |
|---|---|---|
| committer | Catalin Marinas <[email protected]> | 2022-09-30 09:17:15 +0100 |
| commit | a0caebbd04602cb7d28f6f316213a915ffab92a2 (patch) | |
| tree | a830eb7fcba98264df2b0315495eca5c88fc0a02 /scripts/gdb/linux/utils.py | |
| parent | 8c6e3657be6b39cd5943041d0a4ab6bd5d0c2258 (diff) | |
arm64/kprobe: Optimize the performance of patching single-step slot
Single-step slot would not be used until kprobe is enabled, that means
no race condition occurs on it under SMP, hence it is safe to pacth ss
slot without stopping machine.
Since I and D caches are coherent within single-step slot from
aarch64_insn_patch_text_nosync(), hence no need to do it again via
flush_icache_range().
Acked-by: Will Deacon <[email protected]>
Acked-by: Masami Hiramatsu (Google) <[email protected]>
Signed-off-by: Liao Chang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions