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| author | Sebastian Andrzej Siewior <[email protected]> | 2025-05-12 09:27:35 +0000 |
|---|---|---|
| committer | Paolo Abeni <[email protected]> | 2025-05-15 13:23:31 +0000 |
| commit | 0af5928f358c40c1fe5ede79f66f040e23124044 (patch) | |
| tree | dfbac82d8607fa8df428661203fa13075f0685b4 /rust/macros/paste.rs | |
| parent | rds: Disable only bottom halves in rds_page_remainder_alloc() (diff) | |
| download | kernel-0af5928f358c40c1fe5ede79f66f040e23124044.tar.gz kernel-0af5928f358c40c1fe5ede79f66f040e23124044.zip | |
rds: Acquire per-CPU pointer within BH disabled section
rds_page_remainder_alloc() obtains the current CPU with get_cpu() while
disabling preemption. Then the CPU number is used to access the per-CPU
data structure via per_cpu().
This can be optimized by relying on local_bh_disable() to provide a
stable CPU number/ avoid migration and then using this_cpu_ptr() to
retrieve the data structure.
Cc: Allison Henderson <[email protected]>
Cc: [email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
Diffstat (limited to 'rust/macros/paste.rs')
0 files changed, 0 insertions, 0 deletions