sparc64: Improvde documentation and readability of atomic backoff code.

Document what's going on in asm/backoff.h with a large and descriptive
comment.  Refer to it above the cpu_relax() definition in
asm/processor_64.h

Rename the pause patching section to have "3insn" in it's name like
the other patching sections do.

Based upon feedback from Sam Ravnborg.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 847f9f793618..0bacceb19150 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -132,10 +132,10 @@ SECTIONS
                 *(.popc_6insn_patch)
                 __popc_6insn_patch_end = .;
         }
-        .pause_patch : {
-                __pause_patch = .;
-                *(.pause_patch)
-                __pause_patch_end = .;
+        .pause_3insn_patch : {
+                __pause_3insn_patch = .;
+                *(.pause_3insn_patch)
+                __pause_3insn_patch_end = .;
         }
         PERCPU_SECTION(SMP_CACHE_BYTES)