1 files changed, 6 insertions, 1 deletions

diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 9cdf52eec48a..721e25f0e2ea 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -196,11 +196,16 @@ extern unsigned long get_wchan(struct task_struct *task);
 #define KSTK_EIP(tsk)  (task_pt_regs(tsk)->tpc)
 #define KSTK_ESP(tsk)  (task_pt_regs(tsk)->u_regs[UREG_FP])
 
+/* Please see the commentary in asm/backoff.h for a description of
+ * what these instructions are doing and how they have been choosen.
+ * To make a long story short, we are trying to yield the current cpu
+ * strand during busy loops.
+ */
 #define cpu_relax()     asm volatile("\n99:\n\t"                        \
                                      "rd        %%ccr, %%g0\n\t"        \
                                      "rd        %%ccr, %%g0\n\t"        \
                                      "rd        %%ccr, %%g0\n\t"        \
-                                     ".section  .pause_patch,\"ax\"\n\t"\
+                                     ".section  .pause_3insn_patch,\"ax\"\n\t"\
                                      ".word     99b\n\t"                \
                                      "wr        %%g0, 128, %%asr27\n\t" \
                                      "nop\n\t"                          \