cputime: Generic on-demand virtual cputime accounting

[mirror_ubuntu-zesty-kernel.git] / arch / ia64 / include / asm / xen / minstate.h

diff --git a/arch/ia64/include/asm/xen/minstate.h b/arch/ia64/include/asm/xen/minstate.h
index 4d92d9bbda7be19dd419107a34c08f344edfbff1..00cf03e0cb8295c8f489107cc025bf6fd377b108 100644 (file)
--- a/arch/ia64/include/asm/xen/minstate.h
+++ b/arch/ia64/include/asm/xen/minstate.h
@@ -1,3 +1,12 @@
+
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
+/* read ar.itc in advance, and use it before leaving bank 0 */
+#define XEN_ACCOUNT_GET_STAMP          \
+       MOV_FROM_ITC(pUStk, p6, r20, r2);
+#else
+#define XEN_ACCOUNT_GET_STAMP
+#endif
+
 /*
  * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
  * the minimum state necessary that allows us to turn psr.ic back
@@ -123,7 +132,7 @@
        ;;                                                                                      \
 .mem.offset 0,0; st8.spill [r16]=r2,16;                                                                \
 .mem.offset 8,0; st8.spill [r17]=r3,16;                                                                \
-       ACCOUNT_GET_STAMP                                                                       \
+       XEN_ACCOUNT_GET_STAMP                                                                   \
        adds r2=IA64_PT_REGS_R16_OFFSET,r1;                                                     \
        ;;                                                                                      \
        EXTRA;                                                                                  \