diff options
| author | Andrew Pinski <apinski@cavium.com> | 2016-02-02 12:46:26 +0000 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-05-11 22:19:19 +0800 |
| commit | e46018fe4fd741b5f58b6c3cf8b94ed34603c325 (patch) | |
| tree | 807370ed9e832c0fbe7cb085b2f505e4ea0c9769 /tools/perf/scripts/python | |
| parent | 93c384820cf3c1db51073e746980866d2bce8af9 (diff) | |
arm64: lib: patch in prfm for copy_page if requested
On ThunderX T88 pass 1 and pass 2, there is no hardware prefetching so
we need to patch in explicit software prefetching instructions
Prefetching improves this code by 60% over the original code and 2x
over the code without prefetching for the affected hardware using the
benchmark code at https://github.com/apinski-cavium/copy_page_benchmark
Signed-off-by: Andrew Pinski <apinski@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Tested-by: Andrew Pinski <apinski@cavium.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 60e0a09db24adc8809696307e5d97cc4ba7cb3e0)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions