On Thursday 05 March 2009 19:03:52 Stephen Rothwell wrote:
> Hi Rusty,
>
> Today's linux-next build (sparc64 defconfig) failed like this:
>
> drivers/pci/probe.c: In function 'pci_bus_show_cpuaffinity':
> drivers/pci/probe.c:56: error: 'CPU_MASK_ALL_PTR' undeclared (first use in this function)
>
> Caused by commit 66ec53ceff39a3daf3b1a3628bca1198bd88c7b3
> ("cpumask:remove-CPU_MASK_ALL_PTR"). 2.6.29-rc2 added cpumask_of_pcibus()
> (which references CPU_MASK_ALL_PTR) to
> arch/sparc/include/asm/topology_64.h .
Hmm, I *did* get that, but somehow lost it from the series file in the patch
shuffle.
cpumask:remove-address-of-CPU_MASK_ALL-sparc.patch
cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: sparc
Impact: cleanup
(Thanks to Al Viro for reminding me of this, via Ingo)
CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so:
#define CPU_MASK_ALL (cpumask_t) { { ... } }
Taking the address of such a temporary is questionable at best,
unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added
CPU_MASK_ALL_PTR:
#define CPU_MASK_ALL_PTR (&CPU_MASK_ALL)
Which formalizes this practice. One day gcc could bite us over this
usage (though we seem to have gotten away with it so far).
So replace everywhere which used &CPU_MASK_ALL or CPU_MASK_ALL_PTR
with the modern "cpu_all_mask" (a real struct cpumask *), and remove
CPU_MASK_ALL_PTR altogether.
Also remove the confusing and deprecated large-NR_CPUS-only
"cpu_mask_all".
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Mike Travis <travis@xxxxxxx>
---
arch/mips/alchemy/common/time.c | 2 +-
arch/sparc/include/asm/topology_64.h | 2 +-
arch/x86/include/asm/es7000/apic.h | 2 +-
arch/x86/include/asm/numaq/apic.h | 2 +-
include/linux/cpumask.h | 6 ------
init/main.c | 7 +------
kernel/kmod.c | 2 +-
kernel/kthread.c | 4 ++--
mm/pdflush.c | 2 +-
9 files changed, 9 insertions(+), 20 deletions(-)
diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h
--- a/arch/sparc/include/asm/topology_64.h
+++ b/arch/sparc/include/asm/topology_64.h
@@ -45,7 +45,7 @@ static inline int pcibus_to_node(struct
#define cpumask_of_pcibus(bus) \
(pcibus_to_node(bus) == -1 ? \
- CPU_MASK_ALL_PTR : \
+ cpu_all_mask : \
cpumask_of_node(pcibus_to_node(bus)))
#define SD_NODE_INIT (struct sched_domain) { \
--
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