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| author |   Ken Raeburn <raeburn@redhat.com> | 2025-02-19 18:00:19 -0500 |
|---|---|---|
| committer |   Mikulas Patocka <mpatocka@redhat.com> | 2025-02-24 12:09:44 +0100 |
| commit | dc8f646cd870671ccebf896b35433362252b850d (patch) | |
| tree | 6aac855b309eed99acf6ec995dacf90be8b50159 /scripts/lib/kdoc/kdoc_output.py | |
| parent | dm vdo: remove remaining ring references (diff) | |
| download | linux-rng-dc8f646cd870671ccebf896b35433362252b850d.tar.xz linux-rng-dc8f646cd870671ccebf896b35433362252b850d.zip | |
dm vdo: rework processing of loaded refcount byte arrays
Clear provisional refcount values and count free/allocated blocks in
one integrated loop. Process 8 aligned bytes at a time instead of
every byte individually.
On an Intel i7-11850H this reduces the CPU time needed to process a
loaded refcount block by a factor of about 5-6. On a large system the
refcount loading may be the largest factor in device startup time.
Signed-off-by: Ken Raeburn <raeburn@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_output.py')
0 files changed, 0 insertions, 0 deletions