lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[IA64] Add mapping table between irq and vector

Browse Source 
Add mapping tables between irqs and vectors, and its management code.
This is necessary for supporting multiple vector domain because 1:1
mapping between irq and vector will be changed to n:1.

The irq == vector relationship between irqs and vectors is explicitly
remained for percpu interrupts, platform interrupts, isa IRQs and
vectors assigned using assign_irq_vector() because some programs might
depend on it.

And I should consider the following problem.

When pci drivers enabled/disabled devices dynamically, its irq number
is changed to the different one. Therefore, suspend/resume code may
happen problem.

To fix this problem, I bound gsi to irq.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Yasuaki Ishimatsu
2007-07-17 21:22:23 +09:00
committed by Tony Luck
parent f8c087f31e
commit e1b30a3928
5 changed files with 218 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/ia64/kernel/smpboot.c
View File

@@ -395,9 +395,13 @@ smp_callin (void)
fix_b0_for_bsp();
lock_ipi_calllock();
spin_lock(&vector_lock);
/* Setup the per cpu irq handling data structures */
__setup_vector_irq(cpuid);
cpu_set(cpuid, cpu_online_map);
unlock_ipi_calllock();
per_cpu(cpu_state, cpuid) = CPU_ONLINE;
spin_unlock(&vector_lock);
smp_setup_percpu_timer();