diff options
| author | Prarit Bhargava <prarit@sgi.com> | 2005-07-06 14:59:44 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-07-06 14:59:44 -0700 |
| commit | cb4cb2cb9b0b14bdf2fc7125e099ed7e818cea42 (patch) | |
| tree | 11e110ce3201e0cbd3e30f1d4a1b0dc6ebe19bfa /include/asm-ia64/sn/intr.h | |
| parent | bd53d1270f51c6cfb53b06c8f93fd42327871d6b (diff) | |
[IA64] hotplug/ia64: SN Hotplug Driver: SN IRQ Fixes
This patch fixes the SN IRQ code such that cpu affinity and
Hotplug can modify IRQ values. The sn_irq_info structures are now locked
using a RCU lock mechanism to avoid lock contention in the lost interrupt
WAR code.
Signed-off-by: Prarit Bhargava <prarit@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/sn/intr.h')
| -rw-r--r-- | include/asm-ia64/sn/intr.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/asm-ia64/sn/intr.h b/include/asm-ia64/sn/intr.h index e51471fb0867..e190dd4213d5 100644 --- a/include/asm-ia64/sn/intr.h +++ b/include/asm-ia64/sn/intr.h @@ -9,6 +9,8 @@ #ifndef _ASM_IA64_SN_INTR_H #define _ASM_IA64_SN_INTR_H +#include <linux/rcupdate.h> + #define SGI_UART_VECTOR (0xe9) #define SGI_PCIBR_ERROR (0x33) @@ -33,7 +35,7 @@ // The SN PROM irq struct struct sn_irq_info { - struct sn_irq_info *irq_next; /* sharing irq list */ + struct sn_irq_info *irq_next; /* deprecated DO NOT USE */ short irq_nasid; /* Nasid IRQ is assigned to */ int irq_slice; /* slice IRQ is assigned to */ int irq_cpuid; /* kernel logical cpuid */ @@ -47,6 +49,8 @@ struct sn_irq_info { int irq_cookie; /* unique cookie */ int irq_flags; /* flags */ int irq_share_cnt; /* num devices sharing IRQ */ + struct list_head list; /* list of sn_irq_info structs */ + struct rcu_head rcu; /* rcu callback list */ }; extern void sn_send_IPI_phys(int, long, int, int); |