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| author |   David S. Miller <davem@sunset.davemloft.net> | 2006-02-08 02:53:50 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:01 -0800 |
| commit | 5b0c0572fcd6204675c5f7ddfa572b5017f817dd (patch) | |
| tree | 1075a61338e887bd6d4ecd4517646ef95dc09fbc /arch/sparc64/kernel/us3_cpufreq.c | |
| parent | [SPARC64]: Allocate and register the 4 sun4v mondo queues at bootup. (diff) | |
| download | linux-dev-5b0c0572fcd6204675c5f7ddfa572b5017f817dd.tar.xz linux-dev-5b0c0572fcd6204675c5f7ddfa572b5017f817dd.zip | |
[SPARC64]: Sun4v interrupt handling.
Sun4v has 4 interrupt queues: cpu, device, resumable errors,
and non-resumable errors. A set of head/tail offset pointers
help maintain a work queue in physical memory. The entries
are 64-bytes in size.
Each queue is allocated then registered with the hypervisor
as we bring cpus up.
The two error queues each get a kernel side buffer that we
use to quickly empty the main interrupt queue before we
call up to C code to log the event and possibly take evasive
action.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/us3_cpufreq.c')
0 files changed, 0 insertions, 0 deletions