parisc: implement irq stacks

Browse source

Default kernel stack size on parisc is 16k.  During tests we found that the
kernel stack can easily grow beyond 13k, which leaves 3k left for irq
processing.

This patch adds the possibility to activate an additional stack of 16k per CPU
which is being used during irq processing.  This implementation does not yet
uses this irq stack for the irq bh handler.

The assembler code for call_on_stack was heavily cleaned up by John
David Anglin.

CC: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

...

This commit is contained in:

Helge Deller 2013-05-07 20:25:42 +00:00

parent 9372450cc2

commit 200c880420

4 changed files with 94 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

arch/parisc/Kconfig

View file

19

arch/parisc/include/asm/processor.h

View file

41

arch/parisc/kernel/entry.S

View file

28

arch/parisc/kernel/irq.c

View file