Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
new file mode 100644
index 0000000..d71e8f0
--- /dev/null
+++ b/arch/um/kernel/irq.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ * Derived (i.e. mostly copied) from arch/i386/kernel/irq.c:
+ * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
+ */
+
+#include "linux/config.h"
+#include "linux/kernel.h"
+#include "linux/module.h"
+#include "linux/smp.h"
+#include "linux/irq.h"
+#include "linux/kernel_stat.h"
+#include "linux/interrupt.h"
+#include "linux/random.h"
+#include "linux/slab.h"
+#include "linux/file.h"
+#include "linux/proc_fs.h"
+#include "linux/init.h"
+#include "linux/seq_file.h"
+#include "linux/profile.h"
+#include "linux/hardirq.h"
+#include "asm/irq.h"
+#include "asm/hw_irq.h"
+#include "asm/atomic.h"
+#include "asm/signal.h"
+#include "asm/system.h"
+#include "asm/errno.h"
+#include "asm/uaccess.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "irq_user.h"
+#include "irq_kern.h"
+
+
+/*
+ * Generic, controller-independent functions:
+ */
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+ int i = *(loff_t *) v, j;
+ struct irqaction * action;
+ unsigned long flags;
+
+ if (i == 0) {
+ seq_printf(p, " ");
+ for_each_online_cpu(j)
+ seq_printf(p, "CPU%d ",j);
+ seq_putc(p, '\n');
+ }
+
+ if (i < NR_IRQS) {
+ spin_lock_irqsave(&irq_desc[i].lock, flags);
+ action = irq_desc[i].action;
+ if (!action)
+ goto skip;
+ seq_printf(p, "%3d: ",i);
+#ifndef CONFIG_SMP
+ seq_printf(p, "%10u ", kstat_irqs(i));
+#else
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+#endif
+ seq_printf(p, " %14s", irq_desc[i].handler->typename);
+ seq_printf(p, " %s", action->name);
+
+ for (action=action->next; action; action = action->next)
+ seq_printf(p, ", %s", action->name);
+
+ seq_putc(p, '\n');
+skip:
+ spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ } else if (i == NR_IRQS) {
+ seq_putc(p, '\n');
+ }
+
+ return 0;
+}
+
+/*
+ * do_IRQ handles all normal device IRQ's (the special
+ * SMP cross-CPU interrupts have their own specific
+ * handlers).
+ */
+unsigned int do_IRQ(int irq, union uml_pt_regs *regs)
+{
+ irq_enter();
+ __do_IRQ(irq, (struct pt_regs *) regs);
+ irq_exit();
+ return 1;
+}
+
+int um_request_irq(unsigned int irq, int fd, int type,
+ irqreturn_t (*handler)(int, void *, struct pt_regs *),
+ unsigned long irqflags, const char * devname,
+ void *dev_id)
+{
+ int err;
+
+ err = request_irq(irq, handler, irqflags, devname, dev_id);
+ if(err)
+ return(err);
+
+ if(fd != -1)
+ err = activate_fd(irq, fd, type, dev_id);
+ return(err);
+}
+EXPORT_SYMBOL(um_request_irq);
+EXPORT_SYMBOL(reactivate_fd);
+
+static DEFINE_SPINLOCK(irq_spinlock);
+
+unsigned long irq_lock(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&irq_spinlock, flags);
+ return(flags);
+}
+
+void irq_unlock(unsigned long flags)
+{
+ spin_unlock_irqrestore(&irq_spinlock, flags);
+}
+
+/* presently hw_interrupt_type must define (startup || enable) &&
+ * disable && end */
+static void dummy(unsigned int irq)
+{
+}
+
+static struct hw_interrupt_type SIGIO_irq_type = {
+ .typename = "SIGIO",
+ .disable = dummy,
+ .enable = dummy,
+ .ack = dummy,
+ .end = dummy
+};
+
+static struct hw_interrupt_type SIGVTALRM_irq_type = {
+ .typename = "SIGVTALRM",
+ .shutdown = dummy, /* never called */
+ .disable = dummy,
+ .enable = dummy,
+ .ack = dummy,
+ .end = dummy
+};
+
+void __init init_IRQ(void)
+{
+ int i;
+
+ irq_desc[TIMER_IRQ].status = IRQ_DISABLED;
+ irq_desc[TIMER_IRQ].action = NULL;
+ irq_desc[TIMER_IRQ].depth = 1;
+ irq_desc[TIMER_IRQ].handler = &SIGVTALRM_irq_type;
+ enable_irq(TIMER_IRQ);
+ for(i=1;i<NR_IRQS;i++){
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = NULL;
+ irq_desc[i].depth = 1;
+ irq_desc[i].handler = &SIGIO_irq_type;
+ enable_irq(i);
+ }
+ init_irq_signals(0);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only. This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */