From 5e0b8d508ed51004bd836384293be00950ee62c9 Mon Sep 17 00:00:00 2001 From: Pasha Date: Tue, 20 Feb 2024 18:49:50 +0000 Subject: init gnumach copy --- linux/dev/kernel/softirq.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 linux/dev/kernel/softirq.c (limited to 'linux/dev/kernel/softirq.c') diff --git a/linux/dev/kernel/softirq.c b/linux/dev/kernel/softirq.c new file mode 100644 index 0000000..ac95a7d --- /dev/null +++ b/linux/dev/kernel/softirq.c @@ -0,0 +1,48 @@ +/* + * linux/kernel/softirq.c + * + * Copyright (C) 1992 Linus Torvalds + * + * do_bottom_half() runs at normal kernel priority: all interrupts + * enabled. do_bottom_half() is atomic with respect to itself: a + * bottom_half handler need not be re-entrant. + */ + +#define MACH_INCLUDE +#include +#include +#include + +#include + +int bh_mask_count[32]; +unsigned int bh_active = 0; +unsigned int bh_mask = 0; +void (*bh_base[32]) (void); + +void +linux_soft_intr (void) +{ + unsigned int active; + unsigned int mask, left; + void (**bh) (void); + + sti (); + bh = bh_base; + active = bh_active & bh_mask; + for (mask = 1, left = ~0; left & active; bh++, mask += mask, left += left) + { + if (mask & active) + { + void (*fn) (void); + bh_active &= ~mask; + fn = *bh; + if (!fn) + goto bad_bh; + fn (); + } + } + return; +bad_bh: + printk ("linux_soft_intr:bad interrupt handler entry %08x\n", mask); +} -- cgit v1.2.1