Interrupt handling

Functions
int32_t	ocs_hal_event_check (ocs_hal_t *hal, uint32_t vector)
	Check for the events associated with the interrupt vector. More...
int32_t	ocs_hal_eq_process (ocs_hal_t *hal, hal_eq_t *eq, uint32_t max_isr_time_msec)
	Process events associated with an EQ. More...

Function Details

int32_t ocs_hal_eq_process	(	ocs_hal_t *	hal,
		hal_eq_t *	eq,
		uint32_t	max_isr_time_msec
	)

Process events associated with an EQ.

Description

Loop termination:

Without a mechanism to terminate the completion processing loop, it is possible under some workload conditions for the loop to never terminate (or at least take longer than the OS is happy to have an interrupt handler or kernel thread context hold a CPU without yielding).

The approach taken here is to periodically check how much time we have been in this processing loop, and if we exceed a predetermined time (multiple seconds), the loop is terminated, and ocs_hal_process() returns.

Parameters

hal	Hardware context.
eq	Pointer to HAL EQ object.
max_isr_time_msec	Maximum time in msec to stay in this function.

Returns

Returns 0 on success, or a non-zero value on failure.

Definition at line 2588 of file ocs_hal.c.

int32_t ocs_hal_event_check	(	ocs_hal_t *	hal,
		uint32_t	vector
	)

Check for the events associated with the interrupt vector.

Parameters

hal	Hardware context.
vector	Zero-based interrupt vector number.

Returns

Returns 0 on success, or a non-zero value on failure.

Definition at line 2480 of file ocs_hal.c.