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kprintf: only call eventfd() if it is safe to interrupt

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Missing ARM64 implementation, cannot test right now

Change-Id: Ia05e8b7952b19bcd8fdac1f920d9bfe341be8b97
This commit is contained in:
Dominique Martinet
2018-06-18 18:05:07 +09:00
committed by Dominique Martinet
parent 6df4bd8f8c
commit ad2cb6375a
3 changed files with 18 additions and 4 deletions
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10
kernel/debug.c
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@@ -84,7 +84,8 @@ void kputs(char *buf)
debug_spin_unlock_irqrestore(&kmsg_buf->lock, flags_inner);
kprintf_unlock(flags_outer);
if (DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
if (irqflags_can_interrupt(flags_outer) &&
DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
eventfd(IHK_OS_EVENTFD_TYPE_KMSG);
ihk_mc_delay_us(IHK_KMSG_NOTIFY_DELAY);
}
@@ -123,8 +124,8 @@ int __kprintf(const char *format, ...)
}
debug_spin_unlock_irqrestore(&kmsg_buf->lock, flags_inner);
if (DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
if (irqflags_can_interrupt(flags_inner) &&
DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
eventfd(IHK_OS_EVENTFD_TYPE_KMSG);
ihk_mc_delay_us(IHK_KMSG_NOTIFY_DELAY);
}
@@ -165,7 +166,8 @@ int kprintf(const char *format, ...)
debug_spin_unlock_irqrestore(&kmsg_buf->lock, flags_inner);
kprintf_unlock(flags_outer);
if (DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
if (irqflags_can_interrupt(flags_outer) &&
DEBUG_KMSG_USED > IHK_KMSG_HIGH_WATER_MARK) {
eventfd(IHK_OS_EVENTFD_TYPE_KMSG);
ihk_mc_delay_us(IHK_KMSG_NOTIFY_DELAY);
}