From: Olof Johansson <olof@lixom.net>
Date: Sat, 10 Nov 2007 20:59:29 +0000 (+1100)
Subject: [POWERPC] Fix CONFIG_SMP=n build error on ppc64
X-Git-Tag: v2.6.24-rc3~146^2~3
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bafbb0c4d8df8b6baa1b917abfc10dc0969cd9d;p=linux-2.6

[POWERPC] Fix CONFIG_SMP=n build error on ppc64

The patch "KVM: fix !SMP build error" change the way smp_call_function()
actually uses the passed in function names on non-SMP builds.  So
previously it was never caught that the function passed in was never
actually defined.

This causes a build error on ppc64_defconfig + CONFIG_SMP=n:

arch/powerpc/mm/tlb_64.c: In function 'pgtable_free_now':
arch/powerpc/mm/tlb_64.c:71: error: 'pte_free_smp_sync' undeclared (first use in this function)
arch/powerpc/mm/tlb_64.c:71: error: (Each undeclared identifier is reported only once
arch/powerpc/mm/tlb_64.c:71: error: for each function it appears in.)

So we need to define it even if CONFIG_SMP is off. Either that or ifdef
out the smp_call_function() call, but that's ugly.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/mm/tlb_64.c b/arch/powerpc/mm/tlb_64.c
index eafbca52bf..e2d867ce1c 100644
--- a/arch/powerpc/mm/tlb_64.c
+++ b/arch/powerpc/mm/tlb_64.c
@@ -54,12 +54,10 @@ unsigned long pte_freelist_forced_free;
 	((PAGE_SIZE - sizeof(struct pte_freelist_batch)) \
 	  / sizeof(pgtable_free_t))
 
-#ifdef CONFIG_SMP
 static void pte_free_smp_sync(void *arg)
 {
 	/* Do nothing, just ensure we sync with all CPUs */
 }
-#endif
 
 /* This is only called when we are critically out of memory
  * (and fail to get a page in pte_free_tlb).