Commit a4fea9b7 authored by Saurabh Sengar's avatar Saurabh Sengar Committed by Wei Liu
Browse files

drivers/clocksource/hyper-v: non ACPI support in hyperv clock 



Add a placeholder function for the hv_setup_stimer0_irq API to accommodate
systems without ACPI support. Since this function is not utilized on
x86/x64 systems and non-ACPI support is only intended for x86/x64 systems,
a placeholder function is sufficient for now and can be improved upon if
necessary in the future.

Signed-off-by: default avatarSaurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: default avatarMichael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1679298460-11855-2-git-send-email-ssengar@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
parent 6a8f57ae

drivers/clocksource/hyperv_timer.c

+13 −2
Original line number Diff line number Diff line
@@ -49,7 +49,7 @@ static bool direct_mode_enabled; 


static int stimer0_irq = -1;

static int stimer0_message_sint;

static DEFINE_PER_CPU(long, stimer0_evt);

static __maybe_unused DEFINE_PER_CPU(long, stimer0_evt);



/*

 * Common code for stimer0 interrupts coming via Direct Mode or
@@ -68,7 +68,7 @@ EXPORT_SYMBOL_GPL(hv_stimer0_isr); 
 * stimer0 interrupt handler for architectures that support

 * per-cpu interrupts, which also implies Direct Mode.

 */

static irqreturn_t hv_stimer0_percpu_isr(int irq, void *dev_id)

static irqreturn_t __maybe_unused hv_stimer0_percpu_isr(int irq, void *dev_id)

{

	hv_stimer0_isr();

	return IRQ_HANDLED;
@@ -196,6 +196,7 @@ void __weak hv_remove_stimer0_handler(void) 
{

};



#ifdef CONFIG_ACPI

/* Called only on architectures with per-cpu IRQs (i.e., not x86/x64) */

static int hv_setup_stimer0_irq(void)

{
@@ -230,6 +231,16 @@ static void hv_remove_stimer0_irq(void) 
		stimer0_irq = -1;

	}

}

#else

static int hv_setup_stimer0_irq(void)

{

	return 0;

}



static void hv_remove_stimer0_irq(void)

{

}

#endif



/* hv_stimer_alloc - Global initialization of the clockevent and stimer0 */

int hv_stimer_alloc(bool have_percpu_irqs)