Re: [PATCH 1/1] powerpc/jump_label: use HAVE_JUMP_LABEL?

[Michael Ellerman]

On Thu, 2014-08-21 at 10:41 +0800, Zhouyi Zhou wrote:
 CONFIG_JUMP_LABEL doesn't ensure HAVE_JUMP_LABEL, if it
 is not the case use maintainers's own mutex to guard
 the modification of global values.
 
OK, so CONFIG_JUMP_LABEL says the user wants to use jump labels. But we also
need the toolchain to support it.

That is reflected in CC_HAVE_ASM_GOTO=y, and if both are set then
HAVE_JUMP_LABEL is set to true.

So this looks right to me.

cheers


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[PATCH 1/1] powerpc/jump_label: use HAVE_JUMP_LABEL?

[Zhouyi Zhou]

CONFIG_JUMP_LABEL doesn't ensure HAVE_JUMP_LABEL, if it
is not the case use maintainers's own mutex to guard
the modification of global values.


Signed-off-by: Zhouyi Zhou yizhouz...@ict.ac.cn
---
 arch/powerpc/platforms/powernv/opal-tracepoints.c |2 +-
 arch/powerpc/platforms/pseries/lpar.c |2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/opal-tracepoints.c 
b/arch/powerpc/platforms/powernv/opal-tracepoints.c
index d8a000a..ae14c40 100644
--- a/arch/powerpc/platforms/powernv/opal-tracepoints.c
+++ b/arch/powerpc/platforms/powernv/opal-tracepoints.c
@@ -2,7 +2,7 @@
 #include linux/jump_label.h
 #include asm/trace.h
 
-#ifdef CONFIG_JUMP_LABEL
+#ifdef HAVE_JUMP_LABEL
 struct static_key opal_tracepoint_key = STATIC_KEY_INIT;
 
 void opal_tracepoint_regfunc(void)
diff --git a/arch/powerpc/platforms/pseries/lpar.c 
b/arch/powerpc/platforms/pseries/lpar.c
index 34e6423..059cfe0 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -642,7 +642,7 @@ EXPORT_SYMBOL(arch_free_page);
 #endif
 
 #ifdef CONFIG_TRACEPOINTS
-#ifdef CONFIG_JUMP_LABEL
+#ifdef HAVE_JUMP_LABEL
 struct static_key hcall_tracepoint_key = STATIC_KEY_INIT;
 
 void hcall_tracepoint_regfunc(void)
-- 
1.7.10.4

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