RFC Kill hotplug_lock()/hotplug_unlock()
Get series with b4
b4 am [email protected]Versions newest first
- v1 RFC Latest2 patches 4 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | rt/locking/hotplug: Kill hotplug_lock()/hotplug_unlock()kernel/ | +47 | 0 replies | |
| 2/2 | rt/locking/hotplug: Fix rt_spin_lock_slowlock() migrate_disable() bugkernel/ | +17 | 4 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.
Cover letter [rfc patch 0/2] Kill hotplug_lock()/hotplug_unlock()
This is my stab at whacking $subject without adding any duct tape. My desktop box has run a thousand iterations of Steven's hotplug stress script accompanied with stockfish, futextest, hackbench and tbench to give hotplug lots of opportunity to prove this broken. So far, it has failed. 64 core DL980 is nowhere near as quick at iteration increment, but has been happily chugging along all the while.
Patches are against 4.6-rc2-rt13. Barring any frozen projectiles lobbed by either humans or hotplug, I'll see what a backport to 4.4-rt would look like. This one has lots of minus signs.
patch1:
kernel/cpu.c | 267 ++++++++++------------------------------------------------- 1 file changed, 47 insertions(+), 220 deletions(-) patch2: kernel/locking/rtmutex.c | 37 +++++++++++++++++-------------------- 1 file changed, 17 insertions(+), 20 deletions(-)