leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

genirq: Move status flag checks to core

Browse Source 
These checks are used by modules and prevent the removal of the export of
irq_to_desc(). Move the accessor into the core.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.703779349@linutronix.de
This commit is contained in:
Thomas Gleixner 2020-12-10 20:25:38 +01:00
parent a313357e70
commit fdd0296304
2 changed files with 25 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
include/linux/irqdesc.h
View File

@ -223,28 +223,21 @@ irq_set_chip_handler_name_locked(struct irq_data *data, struct irq_chip *chip,
data->chip = chip; data->chip = chip;
} }
bool irq_check_status_bit(unsigned int irq, unsigned int bitmask);
static inline bool irq_balancing_disabled(unsigned int irq) static inline bool irq_balancing_disabled(unsigned int irq)
{ {
struct irq_desc *desc; return irq_check_status_bit(irq, IRQ_NO_BALANCING_MASK);
desc = irq_to_desc(irq);
return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;
} }
static inline bool irq_is_percpu(unsigned int irq) static inline bool irq_is_percpu(unsigned int irq)
{ {
struct irq_desc *desc; return irq_check_status_bit(irq, IRQ_PER_CPU);
desc = irq_to_desc(irq);
return desc->status_use_accessors & IRQ_PER_CPU;
} }
static inline bool irq_is_percpu_devid(unsigned int irq) static inline bool irq_is_percpu_devid(unsigned int irq)
{ {
struct irq_desc *desc; return irq_check_status_bit(irq, IRQ_PER_CPU_DEVID);
desc = irq_to_desc(irq);
return desc->status_use_accessors & IRQ_PER_CPU_DEVID;
} }
static inline void static inline void

20
kernel/irq/manage.c
View File

@ -2839,3 +2839,23 @@ bool irq_has_action(unsigned int irq)
return res; return res;
} }
EXPORT_SYMBOL_GPL(irq_has_action); EXPORT_SYMBOL_GPL(irq_has_action);
/**
* irq_check_status_bit - Check whether bits in the irq descriptor status are set
* @irq: The linux irq number
* @bitmask: The bitmask to evaluate
*
* Returns: True if one of the bits in @bitmask is set
*/
bool irq_check_status_bit(unsigned int irq, unsigned int bitmask)
{
struct irq_desc *desc;
bool res = false;
rcu_read_lock();
desc = irq_to_desc(irq);
if (desc)
res = !!(desc->status_use_accessors & bitmask);
rcu_read_unlock();
return res;
}