| commit | 9b8b41319dba06ca3adb53b7aeafa4798353ac5d | |
| author | Dennis Zhou <dennis@kernel.org> | |
| Tue, 18 Dec 2018 16:42:27 +0000 (18 08:42 -0800) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Tue, 12 Feb 2019 19:02:22 +0000 (12 20:02 +0100) | ||
| tree | ce183a9710c9ba549ee5aabf429440f66d0308dc | treesnapshot (tar.gz zip) |
| parent | ff32c3a3b0dd6d93de32a1c407d3a8247b23a407 | commitdiff |
percpu: convert spin_lock_irq to spin_lock_irqsave.
[ Upstream commit 6ab7d47bcbf0144a8cb81536c2cead4cde18acfe ]
From Michael Cree:
"Bisection lead to commit b38d08f3181c ("percpu: restructure
locking") as being the cause of lockups at initial boot on
the kernel built for generic Alpha.
On a suggestion by Tejun Heo that:
So, the only thing I can think of is that it's calling
spin_unlock_irq() while irq handling isn't set up yet.
Can you please try the followings?
1. Convert all spin_[un]lock_irq() to
spin_lock_irqsave/unlock_irqrestore()."
Fixes: b38d08f3181c ("percpu: restructure locking")
Reported-and-tested-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6ab7d47bcbf0144a8cb81536c2cead4cde18acfe ]
From Michael Cree:
"Bisection lead to commit b38d08f3181c ("percpu: restructure
locking") as being the cause of lockups at initial boot on
the kernel built for generic Alpha.
On a suggestion by Tejun Heo that:
So, the only thing I can think of is that it's calling
spin_unlock_irq() while irq handling isn't set up yet.
Can you please try the followings?
1. Convert all spin_[un]lock_irq() to
spin_lock_irqsave/unlock_irqrestore()."
Fixes: b38d08f3181c ("percpu: restructure locking")
Reported-and-tested-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| mm/percpu-km.c | diffblobblamehistory |