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authorIngo Molnar <mingo@elte.hu>2008-12-31 10:31:57 +0300
committerIngo Molnar <mingo@elte.hu>2008-12-31 10:31:57 +0300
commita9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch)
tree886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/um/include/asm/delay.h
parentb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
downloadlinux-a9de18eb761f7c1c860964b2e5addc1a35c7e861.tar.xz
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
Diffstat (limited to 'arch/um/include/asm/delay.h')
-rw-r--r--arch/um/include/asm/delay.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/um/include/asm/delay.h b/arch/um/include/asm/delay.h
new file mode 100644
index 000000000000..c71e32b6741e
--- /dev/null
+++ b/arch/um/include/asm/delay.h
@@ -0,0 +1,20 @@
+#ifndef __UM_DELAY_H
+#define __UM_DELAY_H
+
+#define MILLION 1000000
+
+/* Undefined on purpose */
+extern void __bad_udelay(void);
+
+extern void __udelay(unsigned long usecs);
+extern void __delay(unsigned long loops);
+
+#define udelay(n) ((__builtin_constant_p(n) && (n) > 20000) ? \
+ __bad_udelay() : __udelay(n))
+
+/* It appears that ndelay is not used at all for UML, and has never been
+ * implemented. */
+extern void __unimplemented_ndelay(void);
+#define ndelay(n) __unimplemented_ndelay()
+
+#endif