Commit-ID: f230b6d5c48f8d12f4dfa1f8b5ab0b0320076d21
Gitweb: http://git.kernel.org/tip/f230b6d5c48f8d12f4dfa1f8b5ab0b0320076d21
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Sat, 5 Feb 2011 15:20:04 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sat, 19 Feb 2011 12:58:18 +0100
genirq: Add IRQ_MOVE_PENDING to irq_data.state
chip implementations need to know about it. Keep status in sync until
all users are fixed.
Accessor function: irqd_is_setaffinity_pending(irqdata)
Coders who access them directly will be tracked down and slapped with
stinking trouts.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/irq.h | 20 ++++++++++++++++++--
kernel/irq/compat.h | 11 +++++++++++
kernel/irq/internals.h | 15 +++++++++++++++
kernel/irq/manage.c | 4 ++--
kernel/irq/migration.c | 6 +++---
kernel/irq/proc.c | 2 +-
kernel/irq/settings.h | 2 ++
7 files changed, 52 insertions(+), 8 deletions(-)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 62bb08e..2899905 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -58,15 +58,16 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
#define IRQ_DISABLED 0x00000800 /* DEPRECATED */
#define IRQ_PENDING 0x00001000 /* DEPRECATED */
#define IRQ_MASKED 0x00002000 /* DEPRECATED */
+/* DEPRECATED use irq_setaffinity_pending() instead*/
+#define IRQ_MOVE_PENDING 0x00004000
#endif
-#define IRQ_LEVEL 0x00004000 /* IRQ level triggered */
+#define IRQ_LEVEL 0x00008000 /* IRQ level triggered */
#define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */
#define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */
#define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */
#define IRQ_NOAUTOEN 0x00080000 /* IRQ will not be enabled on request irq */
#define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */
-#define IRQ_MOVE_PENDING 0x00200000 /* need to re-target IRQ destination */
#define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */
#define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */
#define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/
@@ -128,6 +129,21 @@ struct irq_data {
#endif
};
+/*
+ * Bit masks for irq_data.state
+ *
+ * IRQD_SETAFFINITY_PENDING - Affinity setting is pending
+ */
+enum {
+ /* Bit 0 - 7 reserved for TYPE will use later */
+ IRQD_SETAFFINITY_PENDING = (1 << 8),
+};
+
+static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
+{
+ return d->state_use_accessors & IRQD_SETAFFINITY_PENDING;
+}
+
/**
* struct irq_chip - hardware interrupt chip descriptor
*
diff --git a/kernel/irq/compat.h b/kernel/irq/compat.h
index 593abec..5e33aad 100644
--- a/kernel/irq/compat.h
+++ b/kernel/irq/compat.h
@@ -37,6 +37,15 @@ static inline void irq_compat_clr_masked(struct irq_desc *desc)
{
desc->status &= ~IRQ_MASKED;
}
+static inline void irq_compat_set_move_pending(struct irq_desc *desc)
+{
+ desc->status |= IRQ_MOVE_PENDING;
+}
+
+static inline void irq_compat_clr_move_pending(struct irq_desc *desc)
+{
+ desc->status &= ~IRQ_MOVE_PENDING;
+}
#else
static inline void irq_compat_set_progress(struct irq_desc *desc) { }
static inline void irq_compat_clr_progress(struct irq_desc *desc) { }
@@ -46,5 +55,7 @@ static inline void irq_compat_set_pending(struct irq_desc *desc) { }
static inline void irq_compat_clr_pending(struct irq_desc *desc) { }
static inline void irq_compat_set_masked(struct irq_desc *desc) { }
static inline void irq_compat_clr_masked(struct irq_desc *desc) { }
+static inline void irq_compat_set_move_pending(struct irq_desc *desc) { }
+static inline void irq_compat_clr_move_pending(struct irq_desc *desc) { }
#endif
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index cef0849..e93e609 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -125,6 +125,21 @@ static inline void chip_bus_sync_unlock(struct irq_desc *desc)
}
/*
+ * Manipulation functions for irq_data.state
+ */
+static inline void irqd_set_move_pending(struct irq_data *d)
+{
+ d->state_use_accessors |= IRQD_SETAFFINITY_PENDING;
+ irq_compat_set_move_pending(irq_data_to_desc(d));
+}
+
+static inline void irqd_clr_move_pending(struct irq_data *d)
+{
+ d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING;
+ irq_compat_clr_move_pending(irq_data_to_desc(d));
+}
+
+/*
* Debugging printout:
*/
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ccc9389..9a99c47 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -107,7 +107,7 @@ static inline bool irq_can_move_pcntxt(struct irq_desc *desc)
}
static inline bool irq_move_pending(struct irq_desc *desc)
{
- return desc->status & IRQ_MOVE_PENDING;
+ return irqd_is_setaffinity_pending(&desc->irq_data);
}
static inline void
irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
@@ -156,7 +156,7 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
ret = 0;
}
} else {
- desc->status |= IRQ_MOVE_PENDING;
+ irqd_set_move_pending(&desc->irq_data);
irq_copy_pending(desc, mask);
}
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 6f2f984..9485ae0 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -9,7 +9,7 @@ void move_masked_irq(int irq)
struct irq_desc *desc = irq_to_desc(irq);
struct irq_chip *chip = desc->irq_data.chip;
- if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+ if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
return;
/*
@@ -20,7 +20,7 @@ void move_masked_irq(int irq)
return;
}
- desc->status &= ~IRQ_MOVE_PENDING;
+ irqd_clr_move_pending(&desc->irq_data);
if (unlikely(cpumask_empty(desc->pending_mask)))
return;
@@ -58,7 +58,7 @@ void move_native_irq(int irq)
struct irq_desc *desc = irq_to_desc(irq);
bool masked;
- if (likely(!(desc->status & IRQ_MOVE_PENDING)))
+ if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
return;
if (unlikely(desc->istate & IRQS_DISABLED))
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 2644923..afe4e68 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -25,7 +25,7 @@ static int irq_affinity_proc_show(struct seq_file *m, void *v)
const struct cpumask *mask = desc->irq_data.affinity;
#ifdef CONFIG_GENERIC_PENDING_IRQ
- if (desc->status & IRQ_MOVE_PENDING)
+ if (irqd_is_setaffinity_pending(&desc->irq_data))
mask = desc->pending_mask;
#endif
seq_cpumask(m, mask);
diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h
index ef09824..bb104a2 100644
--- a/kernel/irq/settings.h
+++ b/kernel/irq/settings.h
@@ -20,3 +20,5 @@ enum {
#define IRQ_MASKED GOT_YOU_MORON
#undef IRQ_WAKEUP
#define IRQ_WAKEUP GOT_YOU_MORON
+#undef IRQ_MOVE_PENDING
+#define IRQ_MOVE_PENDING GOT_YOU_MORON
--
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