On 06/13/2014 01:05 AM, Vincent Guittot wrote:
Hi Guenter,

There are also such kind of function in ARM and powerpc architecture

with the additional changes below, you can add my
Acked-by Vincent Guittot <[email protected]>


I'd prefer to fix those instances with separate patches, since they
will normally be handled by different maintainers. That simplifies
acceptance.

Guenter

Vincent

diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 1576d05..7e56b2f 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -275,7 +275,7 @@ void store_cpu_topology(unsigned int cpuid)
   cpu_topology[cpuid].socket_id, mpidr);
  }

-static inline const int cpu_corepower_flags(void)
+static inline int cpu_corepower_flags(void)
  {
   return SD_SHARE_PKG_RESOURCES  | SD_SHARE_POWERDOMAIN;
  }
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 10ffffe..49d5d4e 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -768,7 +768,7 @@ int setup_profiling_timer(unsigned int multiplier)

  #ifdef CONFIG_SCHED_SMT
  /* cpumask of CPUs with asymetric SMT dependancy */
-static const int powerpc_smt_flags(void)
+static int powerpc_smt_flags(void)
  {
   int flags = SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES;


On 13 June 2014 01:08, Guenter Roeck <[email protected]> wrote:
Commit 143e1e28cb (sched: Rework sched_domain topology definition)
introduced a number of functions with a return value of 'const int'.
gcc doesn't know what to do with that and, if the kernel is compiled
with W=1, complains with the following warnings whenever sched.h
is included.

include/linux/sched.h:875:25: warning:
         type qualifiers ignored on function return type
include/linux/sched.h:882:25: warning:
         type qualifiers ignored on function return type
include/linux/sched.h:889:25: warning:
         type qualifiers ignored on function return type
include/linux/sched.h:1002:21: warning:
         type qualifiers ignored on function return type

Drop 'const' from the function declarations to fix the problem.

Cc: Vincent Guittot <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
---
  include/linux/sched.h | 8 ++++----
  1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index ea74596..65046b3 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -872,21 +872,21 @@ enum cpu_idle_type {
  #define SD_NUMA                        0x4000  /* cross-node balancing */

  #ifdef CONFIG_SCHED_SMT
-static inline const int cpu_smt_flags(void)
+static inline int cpu_smt_flags(void)
  {
         return SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES;
  }
  #endif

  #ifdef CONFIG_SCHED_MC
-static inline const int cpu_core_flags(void)
+static inline int cpu_core_flags(void)
  {
         return SD_SHARE_PKG_RESOURCES;
  }
  #endif

  #ifdef CONFIG_NUMA
-static inline const int cpu_numa_flags(void)
+static inline int cpu_numa_flags(void)
  {
         return SD_NUMA;
  }
@@ -999,7 +999,7 @@ void free_sched_domains(cpumask_var_t doms[], unsigned int 
ndoms);
  bool cpus_share_cache(int this_cpu, int that_cpu);

  typedef const struct cpumask *(*sched_domain_mask_f)(int cpu);
-typedef const int (*sched_domain_flags_f)(void);
+typedef int (*sched_domain_flags_f)(void);

  #define SDTL_OVERLAP   0x01

--
1.9.1




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