aha/arch/blackfin
Philippe Gerum 6b8019c85e Blackfin: allow high priority domains to preempt schedule_tail()
ret_from_fork is always entered with hw interrupts off, which prevents
real-time domains to preempt the Linux kernel during part of the
initial context switch to the new task, which could in turn raise the
worst-case latency figures.

To avoid this, stall the root domain stage in the interrupt pipeline
to keep the scheduling tail code free from Linux-handled IRQs, then
enable hardware interrupts again.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-09-16 21:28:33 -04:00
..
boot Blackfin: stick the CPU name into boot image name 2009-06-22 21:16:03 -04:00
configs Blackfin: update defconfigs 2009-06-22 21:16:01 -04:00
include/asm Blackfin: fix misnomer of some I-pipe helpers 2009-09-16 21:28:30 -04:00
kernel Blackfin: allow high priority domains to preempt schedule_tail() 2009-09-16 21:28:33 -04:00
lib Blackfin: fix misnomer of some I-pipe helpers 2009-09-16 21:28:30 -04:00
mach-bf518 Blackfin: fix incomplete renaming of the bfin-twi-lcd driver 2009-07-16 01:52:32 -04:00
mach-bf527 Blackfin: fix incomplete renaming of the bfin-twi-lcd driver 2009-07-16 01:52:32 -04:00
mach-bf533 Blackfin: fix incomplete renaming of the bfin-twi-lcd driver 2009-07-16 01:52:32 -04:00
mach-bf537 Blackfin: bf537-stamp: add resources for AD1938 audio card 2009-09-16 21:28:26 -04:00
mach-bf538 Blackfin: fix wrong CTS inversion 2009-07-16 01:52:30 -04:00
mach-bf548 Blackfin: fix incomplete renaming of the bfin-twi-lcd driver 2009-07-16 01:52:32 -04:00
mach-bf561 Blackfin: fix wrong CTS inversion 2009-07-16 01:52:30 -04:00
mach-common Blackfin: make EVT3->EVT5 lowering more robust wrt IPEND[4] 2009-09-16 21:28:28 -04:00
mm Merge branch 'master' into for-next 2009-07-04 07:13:18 +09:00
oprofile Blackfin arch: remove hardware PM code, oprofile not use it 2009-01-07 23:14:39 +08:00
Kconfig Blackfin: fix GPTMR0_CLOCKSOURCE dependency on BFIN_GPTIMERS 2009-06-22 21:16:15 -04:00
Kconfig.debug Blackfin: make deferred hardware errors more exact 2009-06-12 06:11:44 -04:00
Makefile Blackfin: add support for bzip2/lzma compressed kernel images 2009-06-13 07:20:13 -04:00