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| author | David S. Miller <davem@davemloft.net> | 2012-10-28 13:04:47 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-28 13:04:47 -0700 |
| commit | 187818cd6a5ab6343eac47e52da2f3e40c544b98 (patch) | |
| tree | 09b55dad78359ae7e047f3eb533844adaa4094c6 /arch/sparc/kernel | |
| parent | e9b9eb59ffcdee09ec96b040f85c919618f4043e (diff) | |
| download | olio-linux-3.10-187818cd6a5ab6343eac47e52da2f3e40c544b98.tar.xz olio-linux-3.10-187818cd6a5ab6343eac47e52da2f3e40c544b98.zip | |
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>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/entry.h | 4 | ||||
| -rw-r--r-- | arch/sparc/kernel/setup_64.c | 4 | ||||
| -rw-r--r-- | arch/sparc/kernel/vmlinux.lds.S | 8 |
3 files changed, 8 insertions, 8 deletions
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h index 51742df63c7..cc3c5cb47cd 100644 --- a/arch/sparc/kernel/entry.h +++ b/arch/sparc/kernel/entry.h @@ -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 *, diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index b45cff408de..0eaf0059aae 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -320,8 +320,8 @@ static void __init pause_patch(void) { struct pause_patch_entry *p; - p = &__pause_patch; - while (p < &__pause_patch_end) { + p = &__pause_3insn_patch; + while (p < &__pause_3insn_patch_end) { unsigned long i, addr = p->addr; for (i = 0; i < 3; i++) { diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 847f9f79361..0bacceb1915 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) |