kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-09-20 18:15:29 +00:00
Code Issues Releases Packages Activity
linux/include/asm-mips/irqflags.h
Ralf Baechle ac8be95504 [MIPS] SMTC: Instant IPI replay. 
SMTC pseudo-interrupts between TCs are deferred and queued if the target
TC is interrupt-inhibited (IXMT). In the first SMTC prototypes, these
queued IPIs were serviced on return to user mode, or on entry into the
kernel idle loop. The INSTANT_REPLAY option dispatches them as part of
local_irq_restore() processing, which adds runtime overhead (hence the
option to turn it off), but ensures that IPIs are handled promptly even
under heavy I/O interrupt load.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-01-23 18:26:47 +00:00

272 lines
6.4 KiB
Raw Permalink Blame History