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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2025-05-12 11:27:35 +0200 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2025-05-15 15:23:31 +0200 |
| commit | 0af5928f358c40c1fe5ede79f66f040e23124044 (patch) | |
| tree | dfbac82d8607fa8df428661203fa13075f0685b4 /scripts/gdb/linux/modules.py | |
| parent | rds: Disable only bottom halves in rds_page_remainder_alloc() (diff) | |
| download | wireguard-linux-0af5928f358c40c1fe5ede79f66f040e23124044.tar.xz wireguard-linux-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 <allison.henderson@oracle.com>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20250512092736.229935-15-bigeasy@linutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'scripts/gdb/linux/modules.py')
0 files changed, 0 insertions, 0 deletions