From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753254AbaFMPOG (ORCPT ); Fri, 13 Jun 2014 11:14:06 -0400 Received: from mail.active-venture.com ([67.228.131.205]:60416 "EHLO mail.active-venture.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752637AbaFMPOF (ORCPT ); Fri, 13 Jun 2014 11:14:05 -0400 X-Originating-IP: 108.223.40.66 Message-ID: <539B1534.5020603@roeck-us.net> Date: Fri, 13 Jun 2014 08:13:56 -0700 From: Guenter Roeck User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Vincent Guittot CC: linux-kernel , Peter Zijlstra , Ingo Molnar Subject: Re: [PATCH] sched: Fix compiler warnings References: <1402614493-12521-1-git-send-email-linux@roeck-us.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > 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 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 >> Signed-off-by: Guenter Roeck >> --- >> 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 >> > >