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authorHelge Deller <deller@gmx.de>2013-05-08 00:25:42 +0400
committerHelge Deller <deller@gmx.de>2013-05-08 00:30:35 +0400
commit200c880420a2c02a0899120ce52d801fad705b90 (patch)
treec7f206861dbe5707fe319122bee0eabb67da7b9f /arch/parisc/mm
parent9372450cc22d185f708e5cc3557cf991be4b7dc5 (diff)
downloadlinux-200c880420a2c02a0899120ce52d801fad705b90.tar.xz
parisc: implement irq stacks
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>
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