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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2010-04-07 11:52:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-07 16:15:05 -0700 |
| commit | 3eac4abaa69949af0e2f64e5c55ee8a22bbdd3e7 (patch) | |
| tree | 9620ae3c39a0870a010a08166e29823a7afbf262 /kernel/trace/trace.c | |
| parent | 04287f975e68038051eb9c79896866d36610b8e0 (diff) | |
| download | linux-3eac4abaa69949af0e2f64e5c55ee8a22bbdd3e7.tar.gz linux-3eac4abaa69949af0e2f64e5c55ee8a22bbdd3e7.tar.bz2 linux-3eac4abaa69949af0e2f64e5c55ee8a22bbdd3e7.zip | |
rwsem generic spinlock: use IRQ save/restore spinlocks
rwsems can be used with IRQs disabled, particularily in early boot
before IRQs are enabled. Currently the spin_unlock_irq() usage in the
slow-patch will unconditionally enable interrupts and cause problems
since interrupts are not yet initialized or enabled.
This patch uses save/restore versions of IRQ spinlocks in the slowpath
to ensure interrupts are not unintentionally disabled.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/trace/trace.c')
0 files changed, 0 insertions, 0 deletions