Re: SLUB: Use ilog2 instead of series of constant comparisons.

[Christoph Lameter <clameter@sgi.com>]

On Wed, 6 Jun 2007, Martin Bligh wrote:

> > I tried to build gcc-3.3.3 the other day.  Would you believe that gcc-4.1.0
> > fails to compile gcc-3.3.3?
> 
> IIRC, the SUSE ones were customized anyway, so not sure that'd help you.
> Might do though.

Tried building with gcc-3.3

clameter@schroedinger:~/software/slub$ powerpc-linux-gnu-gcc --version
powerpc-linux-gnu-gcc (GCC) 3.3.6 (Debian 1:3.3.6-15)

but cell_defconfig and pseries_defconfig fail to build straight out.
This is what happens with pseries_defconfig:

  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  CC      arch/powerpc/kernel/asm-offsets.s
In file included from include/asm/mmu.h:7,
                 from include/asm/lppaca.h:32,
                 from include/asm/paca.h:20,
                 from include/asm/hw_irq.h:17,
                 from include/asm/system.h:9,
                 from include/linux/list.h:9,
                 from include/linux/signal.h:8,
                 from arch/powerpc/kernel/asm-offsets.c:16:
include/asm/mmu-hash64.h: In function `hpte_encode_r':
include/asm/mmu-hash64.h:216: warning: integer constant is too large for 
"unsigned long" type
include/asm/mmu-hash64.h: In function `hpt_hash':
include/asm/mmu-hash64.h:231: warning: integer constant is too large for 
"unsigned long" type
include/asm/mmu-hash64.h: In function `vsid_scramble':
include/asm/mmu-hash64.h:387: warning: right shift count >= width of type
include/asm/mmu-hash64.h:387: warning: left shift count >= width of type
include/asm/mmu-hash64.h:388: warning: right shift count >= width of type
include/asm/mmu-hash64.h:388: warning: left shift count >= width of type
include/asm/mmu-hash64.h: In function `get_kernel_vsid':
include/asm/mmu-hash64.h:395: error: `SID_SHIFT' undeclared (first use in 
this function)

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