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sparc64: Improvde documentation and readability of atomic backoff code.

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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>
This commit is contained in:
David S. Miller 2012-10-28 13:04:47 -07:00
parent e9b9eb59ff
commit 187818cd6a
5 changed files with 55 additions and 10 deletions
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4
arch/sparc/kernel/entry.h
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@ -63,8 +63,8 @@ struct pause_patch_entry {
unsigned int addr;
unsigned int insns[3];
};
extern struct pause_patch_entry __pause_patch,
__pause_patch_end;
extern struct pause_patch_entry __pause_3insn_patch,
__pause_3insn_patch_end;
extern void __init per_cpu_patch(void);
extern void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *,