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| author | Daniel Hellstrom | 2011-05-02 02:08:54 +0200 |
|---|---|---|
| committer | David S. Miller | 2011-05-16 22:07:44 +0200 |
| commit | 55dd23eca666876e6028aa35d5e391cfced54871 (patch) | |
| tree | 7f1006b68c8f04f4590c5442e5822b71d87e761d /arch/sparc/kernel/irq_64.c | |
| parent | sparc32, sun4m: Implemented SMP IPIs support for SUN4M machines (diff) | |
| download | kernel-qcow2-linux-55dd23eca666876e6028aa35d5e391cfced54871.tar.gz kernel-qcow2-linux-55dd23eca666876e6028aa35d5e391cfced54871.tar.xz kernel-qcow2-linux-55dd23eca666876e6028aa35d5e391cfced54871.zip | |
sparc32, sun4d: Implemented SMP IPIs support for SUN4D machines
The sun4d does not seem to have a distingstion between soft and hard
IRQs. When generating IPIs the generated IRQ looks like a hard IRQ,
this patch adds a "IPI check" in the sun4d irq trap handler at a
predefined IRQ number (SUN4D_IPI_IRQ). Before generating an IPI
a per-cpu memory structure is modified for the "IPI check" to
successfully detect a IPI request to a specific processor, the check
clears the IPI work requested.
All three IPIs (resched, single and cpu-mask) use the same IRQ
number.
The IPI IRQ should preferrably be on a separate IRQ and definitly
not shared with IRQ handlers requesting IRQ with IRQF_SHARED.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/irq_64.c')
0 files changed, 0 insertions, 0 deletions