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6b8019c85e
linux/arch/blackfin/kernel
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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
..
cplb-mpu Blackfin: decouple unrelated cache settings to get exact behavior 2009-06-22 21:15:59 -04:00
cplb-nompu Blackfin: add CPLB entries for Core B on-chip L1 SRAM regions 2009-07-16 01:52:51 -04:00
.gitignore Blackfin: ignore generated vmlinux.lds 2009-05-27 00:27:03 -04:00
asm-offsets.c Blackfin: make EVT3->EVT5 lowering more robust wrt IPEND[4] 2009-09-16 21:28:28 -04:00
bfin_dma_5xx.c Blackfin: fix early_dma_memcpy() handling of busy channels 2009-07-16 01:52:26 -04:00
bfin_gpio.c Blackfin: fix bugs in GPIO resume code 2009-07-16 01:52:42 -04:00
bfin_ksyms.c Blackfin: pull in asm/io.h in ksyms for prototypes 2009-06-18 21:40:44 -04:00
cplbinfo.c Blackfin arch: Faster C implementation of no-MPU CPLB handler 2009-01-07 23:14:38 +08:00
dma-mapping.c [Blackfin] arch: __FUNCTION__ is gcc-specific, use __func__ 2008-04-23 09:39:01 +08:00
early_printk.c Blackfin: do not configure the UART early if on wrong processor 2009-06-13 07:20:10 -04:00
entry.S Blackfin: allow high priority domains to preempt schedule_tail() 2009-09-16 21:28:33 -04:00
fixed_code.S Blackfin arch: move fixed code into init section 2008-11-18 17:48:22 +08:00
flat.c
ftrace-entry.S Blackfin: initial support for ftrace grapher 2009-06-13 07:20:16 -04:00
ftrace.c Blackfin: initial support for ftrace grapher 2009-06-13 07:20:16 -04:00
gptimers.c Blackfin: update gptimers API 2009-06-12 06:11:47 -04:00
init_task.c mm: consolidate init_mm definition 2009-06-16 19:47:28 -07:00
ipipe.c Blackfin: fix misnomer of some I-pipe helpers 2009-09-16 21:28:30 -04:00
irqchip.c Blackfin: abstract irq14 lowering in do_irq 2009-06-22 21:15:46 -04:00
kgdb_test.c Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch 2009-03-05 16:44:53 +08:00
kgdb.c Blackfin: unify memory region checks between kgdb and traps 2009-06-22 21:15:34 -04:00
Makefile Blackfin: remove obsolete mcount support from I-pipe code 2009-06-22 21:15:56 -04:00
module.c Blackfin: rename Blackfin relocs according to the toolchain 2009-06-12 06:11:59 -04:00
process.c Blackfin: handle BF561 Core B memory regions better when SMP=n 2009-07-16 01:52:24 -04:00
ptrace.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
reboot.c Blackfin arch: bfin_reset->_bfin_reset redirection no longer needed 2009-02-04 16:49:45 +08:00
setup.c Blackfin: drop per-cpu loops_per_jiffy tracking 2009-07-16 01:52:44 -04:00
signal.c [Blackfin] arch: disable single stepping when delivering a signal 2008-05-07 11:41:26 +08:00
stacktrace.c Blackfin: add preliminary support for STACKTRACE 2009-06-13 07:20:14 -04:00
sys_bfin.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
time-ts.c Blackfin: add support for gptimer0 as a tick source 2009-06-12 06:11:37 -04:00
time.c Blackfin: convert SMP to only use generic time framework 2009-06-12 06:11:56 -04:00
traps.c Blackfin: export show_stack() to modules 2009-09-16 21:28:32 -04:00
vmlinux.lds.S linker script: unify usage of discard definition 2009-07-09 11:27:40 +09:00