Commit-ID: 69790ba92b8d67eaee5e50b30a5b696d40664caf
Gitweb: https://git.kernel.org/tip/69790ba92b8d67eaee5e50b30a5b696d40664caf
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Fri, 29 Dec 2017 16:44:34 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 29 Dec 2017 21:13:04 +0100
genirq: Introduce IRQD_CAN_RESERVE flag
Add a new flag to mark interrupts which can use reservation mode. This is
going to be used in subsequent patches to disable reservation mode for a
certain class of MSI devices.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Alexandru Chirvasitu <achirvasub@xxxxxxxxx>
Tested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Maciej W. Rozycki <macro@xxxxxxxxxxxxxx>
Cc: Mikael Pettersson <mikpelinux@xxxxxxxxx>
Cc: Josh Poulson <jopoulso@xxxxxxxxxxxxx>
Cc: Mihai Costache <v-micos@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Dexuan Cui <decui@xxxxxxxxxxxxx>
Cc: Simon Xiao <sixiao@xxxxxxxxxxxxx>
Cc: Saeed Mahameed <saeedm@xxxxxxxxxxxx>
Cc: Jork Loeser <Jork.Loeser@xxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: devel@xxxxxxxxxxxxxxxxxxxxxx
Cc: KY Srinivasan <kys@xxxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxx>
Cc: Sakari Ailus <sakari.ailus@xxxxxxxxx>,
Cc: linux-media@xxxxxxxxxxxxxxx
---
include/linux/irq.h | 17 +++++++++++++++++
kernel/irq/debugfs.c | 1 +
2 files changed, 18 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index e140f69..a0231e9 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -212,6 +212,7 @@ struct irq_data {
* mask. Applies only to affinity managed irqs.
* IRQD_SINGLE_TARGET - IRQ allows only a single affinity target
* IRQD_DEFAULT_TRIGGER_SET - Expected trigger already been set
+ * IRQD_CAN_RESERVE - Can use reservation mode
*/
enum {
IRQD_TRIGGER_MASK = 0xf,
@@ -233,6 +234,7 @@ enum {
IRQD_MANAGED_SHUTDOWN = (1 << 23),
IRQD_SINGLE_TARGET = (1 << 24),
IRQD_DEFAULT_TRIGGER_SET = (1 << 25),
+ IRQD_CAN_RESERVE = (1 << 26),
};
#define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors)
@@ -377,6 +379,21 @@ static inline bool irqd_is_managed_and_shutdown(struct irq_data *d)
return __irqd_to_state(d) & IRQD_MANAGED_SHUTDOWN;
}
+static inline void irqd_set_can_reserve(struct irq_data *d)
+{
+ __irqd_to_state(d) |= IRQD_CAN_RESERVE;
+}
+
+static inline void irqd_clr_can_reserve(struct irq_data *d)
+{
+ __irqd_to_state(d) &= ~IRQD_CAN_RESERVE;
+}
+
+static inline bool irqd_can_reserve(struct irq_data *d)
+{
+ return __irqd_to_state(d) & IRQD_CAN_RESERVE;
+}
+
#undef __irqd_to_state
static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c
index 7f608ac..acfaaef 100644
--- a/kernel/irq/debugfs.c
+++ b/kernel/irq/debugfs.c
@@ -113,6 +113,7 @@ static const struct irq_bit_descr irqdata_states[] = {
BIT_MASK_DESCR(IRQD_SETAFFINITY_PENDING),
BIT_MASK_DESCR(IRQD_AFFINITY_MANAGED),
BIT_MASK_DESCR(IRQD_MANAGED_SHUTDOWN),
+ BIT_MASK_DESCR(IRQD_CAN_RESERVE),
BIT_MASK_DESCR(IRQD_FORWARDED_TO_VCPU),
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|