This commit was manufactured by cvs2svn to create tag

[linux-2.6.git] / include / asm-sparc / hardirq.h

diff --git a/include/asm-sparc/hardirq.h b/include/asm-sparc/hardirq.h
index a741114..548b441 100644 (file)
--- a/include/asm-sparc/hardirq.h
+++ b/include/asm-sparc/hardirq.h
@@ -19,8 +19,29 @@ typedef struct {
 
 #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
 
+/*
+ * We put the hardirq and softirq counter into the preemption
+ * counter. The bitmask has the following meaning:
+ *
+ * - bits 0-7 are the preemption count (max preemption depth: 256)
+ * - bits 8-15 are the softirq count (max # of softirqs: 256)
+ * - bits 16-23 are the hardirq count (max # of hardirqs: 256)
+ *
+ * - ( bit 26 is the PREEMPT_ACTIVE flag. )
+ *
+ * PREEMPT_MASK: 0x000000ff
+ * SOFTIRQ_MASK: 0x0000ff00
+ * HARDIRQ_MASK: 0x00ff0000
+ */
+
+#define PREEMPT_BITS    8
+#define SOFTIRQ_BITS    8
 #define HARDIRQ_BITS    8
 
+#define PREEMPT_SHIFT   0
+#define SOFTIRQ_SHIFT   (PREEMPT_SHIFT + PREEMPT_BITS)
+#define HARDIRQ_SHIFT   (SOFTIRQ_SHIFT + SOFTIRQ_BITS)
+
 #define irq_enter()             (preempt_count() += HARDIRQ_OFFSET)
 #define irq_exit()                                                      \
 do {                                                                    \