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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 13:38:45 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 13:38:45 -0700
commit38cb162b7585d837083b8365da1eb32687c5164c (patch)
treee4ae15715b23b320b1a92699fac767bc766c8f0b /arch/ia64/kernel/irq_ia64.c
parentba7cc09c9c9e29a57045dc5bbf843ac1cfad3283 (diff)
parente180583b85f4a48bd55924712c88e5d8eb182e08 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] wire up pselect, ppoll [IA64] Add TIF_RESTORE_SIGMASK [IA64] unwind did not work for processes born with CLONE_STOPPED [IA64] Optional method to purge the TLB on SN systems [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64 [IA64-SN2][KJ] mmtimer.c-kzalloc [IA64] fix stack alignment for ia32 signal handlers [IA64] - Altix: hotplug after intr redirect can crash system [IA64] save and restore cpus_allowed in cpu_idle_wait [IA64] Removal of percpu TR cleanup in kexec code [IA64] Fix some section mismatch errors
Diffstat (limited to 'arch/ia64/kernel/irq_ia64.c')
-rw-r--r--arch/ia64/kernel/irq_ia64.c27
1 files changed, 22 insertions, 5 deletions
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 1c5044a80958..dce5341303de 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -38,6 +38,7 @@
#include <asm/machvec.h>
#include <asm/pgtable.h>
#include <asm/system.h>
+#include <asm/tlbflush.h>
#ifdef CONFIG_PERFMON
# include <asm/perfmon.h>
@@ -126,8 +127,10 @@ void destroy_irq(unsigned int irq)
#ifdef CONFIG_SMP
# define IS_RESCHEDULE(vec) (vec == IA64_IPI_RESCHEDULE)
+# define IS_LOCAL_TLB_FLUSH(vec) (vec == IA64_IPI_LOCAL_TLB_FLUSH)
#else
# define IS_RESCHEDULE(vec) (0)
+# define IS_LOCAL_TLB_FLUSH(vec) (0)
#endif
/*
* That's where the IVT branches when we get an external
@@ -179,8 +182,11 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
saved_tpr = ia64_getreg(_IA64_REG_CR_TPR);
ia64_srlz_d();
while (vector != IA64_SPURIOUS_INT_VECTOR) {
- if (unlikely(IS_RESCHEDULE(vector)))
- kstat_this_cpu.irqs[vector]++;
+ if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
+ smp_local_flush_tlb();
+ kstat_this_cpu.irqs[vector]++;
+ } else if (unlikely(IS_RESCHEDULE(vector)))
+ kstat_this_cpu.irqs[vector]++;
else {
ia64_setreg(_IA64_REG_CR_TPR, vector);
ia64_srlz_d();
@@ -226,8 +232,11 @@ void ia64_process_pending_intr(void)
* Perform normal interrupt style processing
*/
while (vector != IA64_SPURIOUS_INT_VECTOR) {
- if (unlikely(IS_RESCHEDULE(vector)))
- kstat_this_cpu.irqs[vector]++;
+ if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
+ smp_local_flush_tlb();
+ kstat_this_cpu.irqs[vector]++;
+ } else if (unlikely(IS_RESCHEDULE(vector)))
+ kstat_this_cpu.irqs[vector]++;
else {
struct pt_regs *old_regs = set_irq_regs(NULL);
@@ -259,12 +268,12 @@ void ia64_process_pending_intr(void)
#ifdef CONFIG_SMP
-extern irqreturn_t handle_IPI (int irq, void *dev_id);
static irqreturn_t dummy_handler (int irq, void *dev_id)
{
BUG();
}
+extern irqreturn_t handle_IPI (int irq, void *dev_id);
static struct irqaction ipi_irqaction = {
.handler = handle_IPI,
@@ -277,6 +286,13 @@ static struct irqaction resched_irqaction = {
.flags = IRQF_DISABLED,
.name = "resched"
};
+
+static struct irqaction tlb_irqaction = {
+ .handler = dummy_handler,
+ .flags = SA_INTERRUPT,
+ .name = "tlb_flush"
+};
+
#endif
void
@@ -302,6 +318,7 @@ init_IRQ (void)
#ifdef CONFIG_SMP
register_percpu_irq(IA64_IPI_VECTOR, &ipi_irqaction);
register_percpu_irq(IA64_IPI_RESCHEDULE, &resched_irqaction);
+ register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &tlb_irqaction);
#endif
#ifdef CONFIG_PERFMON
pfm_init_percpu();