Re: [PATCH 2/4] io_uring: handle EAGAIN iopoll

[kernel test robot <lkp@intel.com>]

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Hi Pavel,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on next-20200622]
[cannot apply to linus/master v5.8-rc2 v5.8-rc1 v5.7 v5.8-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Pavel-Begunkov/iopoll-fixes-cleanups/20200623-062127
base:    27f11fea33608cbd321a97cbecfa2ef97dcc1821
config: x86_64-randconfig-a001-20200629-CONFIG_DEBUG_INFO_REDUCED (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project cf1d04484344be52ada8178e41d18fd15a9b880c)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   kernel/locking/rwsem.c:295:1: warning: unused function 'rwsem_owner_flags'
   rwsem_owner_flags(struct rw_semaphore unsigned long
   ^
   In file included from kernel/cpu.c:26:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/exit.c:53:
   In file included from include/linux/tracehook.h:50:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/panic.c:85:13: warning: no previous prototype for function 'panic_smp_self_stop'
   void __weak panic_smp_self_stop(void)
   ^
   kernel/panic.c:85:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __weak panic_smp_self_stop(void)
   ^
   static
   kernel/panic.c:95:13: warning: no previous prototype for function 'nmi_panic_self_stop'
   void __weak nmi_panic_self_stop(struct pt_regs
   ^
   kernel/panic.c:95:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __weak nmi_panic_self_stop(struct pt_regs
   ^
   static
   kernel/panic.c:106:13: warning: no previous prototype for function 'crash_smp_send_stop'
   void __weak crash_smp_send_stop(void)
   ^
   kernel/panic.c:106:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __weak crash_smp_send_stop(void)
   ^
   static
   3 warnings generated.
   In file included from kernel/fork.c:53:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/user.c:10:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/cpu.c:101:20: warning: unused function 'cpuhp_lock_acquire'
   static inline void cpuhp_lock_acquire(bool bringup) { }
   ^
   kernel/cpu.c:102:20: warning: unused function 'cpuhp_lock_release'
   static inline void cpuhp_lock_release(bool bringup) { }
   ^
   1 warning generated.
   1 warning generated.
   In file included from kernel/power/wakelock.c:23:
   In file included from kernel/power/power.h:2:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
>> kernel/power/wakelock.c:74:20: warning: unused function 'decrement_wakelocks_number'
   static inline void decrement_wakelocks_number(void)
   ^
   3 warnings generated.
   2 warnings generated.
   kernel/cpu.c:56: warning: cannot understand function prototype: 'struct cpuhp_cpu_state '
   kernel/cpu.c:113: warning: cannot understand function prototype: 'struct cpuhp_step '
   kernel/cpu.c:1884: warning: Function parameter or member 'name' not described in '__cpuhp_setup_state_cpuslocked'
   In file included from kernel/sched/core.c:9:
   In file included from kernel/sched/sched.h:63:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
>> kernel/trace/ftrace.c:6859:20: warning: unused function 'ftrace_startup_enable'
   static inline void ftrace_startup_enable(int command) { }
   ^
   1 warning generated.
   kernel/sched/core.c:4270:35: warning: no previous prototype for function 'schedule_user'
   asmlinkage __visible void __sched schedule_user(void)
   ^
   kernel/sched/core.c:4270:22: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage __visible void __sched schedule_user(void)
   ^
   static
   In file included from kernel/power/process.c:14:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   1 warning generated.
   1 warning generated.
   In file included from kernel/power/snapshot.c:16:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/fork.c:1153: warning: Function parameter or member 'mm' not described in 'set_mm_exe_file'
   kernel/fork.c:1153: warning: Function parameter or member 'new_exe_file' not described in 'set_mm_exe_file'
   kernel/fork.c:1177: warning: Function parameter or member 'mm' not described in 'get_mm_exe_file'
   kernel/fork.c:1197: warning: Function parameter or member 'task' not described in 'get_task_exe_file'
   kernel/fork.c:1222: warning: Function parameter or member 'task' not described in 'get_task_mm'
   kernel/sched/core.c:227:1: warning: unused function 'rq_csd_init'
   rq_csd_init(struct rq call_single_data_t smp_call_func_t func)
   ^
   kernel/sched/core.c:3822:20: warning: unused function 'sched_tick_start'
   static inline void sched_tick_start(int cpu) { }
   ^
   kernel/sched/core.c:3823:20: warning: unused function 'sched_tick_stop'
   static inline void sched_tick_stop(int cpu) { }
   ^
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'ip' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5364: warning: Function parameter or member 'ops' not described in 'ftrace_ops_set_global_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'buf' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'len' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'ops' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'buf' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'len' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'reset' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'len' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'len' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:7471: warning: Function parameter or member 'ops' not described in 'register_ftrace_function'
   kernel/trace/ftrace.c:7493: warning: Function parameter or member 'ops' not described in 'unregister_ftrace_function'
   In file included from kernel/power/main.c:16:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/hibernate.c:15:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/swap.c:23:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/sched/loadavg.c:9:
   In file included from kernel/sched/sched.h:63:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/power/snapshot.c:1266:21: warning: unused function 'saveable_highmem_page'
   static inline void zone unsigned long p)
   ^
   1 warning generated.
   In file included from kernel/sysctl.c:25:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   1 warning generated.
   In file included from kernel/cgroup/cgroup.c:60:
   In file included from include/net/sock.h:53:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item'
   return vmstat_item_in_bytes(item);
   ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/power/hibernate.c:272:12: warning: no previous prototype for function 'arch_resume_nosmt'
   __weak int arch_resume_nosmt(void)
--
   In file included from kernel/power/user.c:10:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   1 warning generated.
   In file included from kernel/power/wakelock.c:23:
   In file included from kernel/power/power.h:2:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
>> kernel/power/wakelock.c:74:20: warning: unused function 'decrement_wakelocks_number' [-Wunused-function]
   static inline void decrement_wakelocks_number(void)
                      ^
   2 warnings generated.
   In file included from kernel/power/process.c:14:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/snapshot.c:16:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/main.c:16:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/hibernate.c:15:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   In file included from kernel/power/swap.c:23:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/power/snapshot.c:1266:21: warning: unused function 'saveable_highmem_page' [-Wunused-function]
   static inline void *saveable_highmem_page(struct zone *z, unsigned long p)
                       ^
   1 warning generated.
   kernel/power/hibernate.c:272:12: warning: no previous prototype for function 'arch_resume_nosmt' [-Wmissing-prototypes]
   __weak int arch_resume_nosmt(void)
              ^
   kernel/power/hibernate.c:272:8: note: declare 'static' if the function is not intended to be used outside of this translation unit
   __weak int arch_resume_nosmt(void)
          ^
          static 
   kernel/power/main.c:593: warning: Function parameter or member 'kobj' not described in 'state_show'
   kernel/power/main.c:593: warning: Function parameter or member 'attr' not described in 'state_show'
   kernel/power/main.c:593: warning: Function parameter or member 'buf' not described in 'state_show'
   2 warnings generated.
   kernel/power/snapshot.c:404: warning: Function parameter or member 'gfp_mask' not described in 'alloc_rtree_node'
   kernel/power/snapshot.c:404: warning: Function parameter or member 'safe_needed' not described in 'alloc_rtree_node'
   kernel/power/snapshot.c:404: warning: Function parameter or member 'ca' not described in 'alloc_rtree_node'
   kernel/power/snapshot.c:404: warning: Function parameter or member 'list' not described in 'alloc_rtree_node'
   kernel/power/snapshot.c:429: warning: Function parameter or member 'zone' not described in 'add_rtree_block'
   kernel/power/snapshot.c:429: warning: Function parameter or member 'gfp_mask' not described in 'add_rtree_block'
   kernel/power/snapshot.c:429: warning: Function parameter or member 'safe_needed' not described in 'add_rtree_block'
   kernel/power/snapshot.c:429: warning: Function parameter or member 'ca' not described in 'add_rtree_block'
   kernel/power/snapshot.c:502: warning: Function parameter or member 'gfp_mask' not described in 'create_zone_bm_rtree'
   kernel/power/snapshot.c:502: warning: Function parameter or member 'safe_needed' not described in 'create_zone_bm_rtree'
   kernel/power/snapshot.c:502: warning: Function parameter or member 'ca' not described in 'create_zone_bm_rtree'
   kernel/power/snapshot.c:502: warning: Function parameter or member 'start' not described in 'create_zone_bm_rtree'
   kernel/power/snapshot.c:502: warning: Function parameter or member 'end' not described in 'create_zone_bm_rtree'
   kernel/power/snapshot.c:537: warning: Function parameter or member 'zone' not described in 'free_zone_bm_rtree'
   kernel/power/snapshot.c:537: warning: Function parameter or member 'clear_nosave_free' not described in 'free_zone_bm_rtree'
   kernel/power/snapshot.c:644: warning: Function parameter or member 'bm' not described in 'memory_bm_create'
   kernel/power/snapshot.c:644: warning: Function parameter or member 'gfp_mask' not described in 'memory_bm_create'
   kernel/power/snapshot.c:644: warning: Function parameter or member 'safe_needed' not described in 'memory_bm_create'
   kernel/power/snapshot.c:686: warning: Function parameter or member 'clear_nosave_free' not described in 'memory_bm_free'
   kernel/power/snapshot.c:708: warning: Function parameter or member 'bm' not described in 'memory_bm_find_bit'
   kernel/power/snapshot.c:708: warning: Function parameter or member 'pfn' not described in 'memory_bm_find_bit'
   kernel/power/snapshot.c:708: warning: Function parameter or member 'addr' not described in 'memory_bm_find_bit'
   kernel/power/snapshot.c:708: warning: Function parameter or member 'bit_nr' not described in 'memory_bm_find_bit'
   kernel/power/snapshot.c:949: warning: Function parameter or member 'start_pfn' not described in '__register_nosave_region'
   kernel/power/snapshot.c:949: warning: Function parameter or member 'end_pfn' not described in '__register_nosave_region'
   kernel/power/snapshot.c:949: warning: Function parameter or member 'use_kmalloc' not described in '__register_nosave_region'
   kernel/power/snapshot.c:1219: warning: Function parameter or member 'zone' not described in 'saveable_highmem_page'
   kernel/power/snapshot.c:1219: warning: Function parameter or member 'pfn' not described in 'saveable_highmem_page'
   kernel/power/snapshot.c:1283: warning: Function parameter or member 'zone' not described in 'saveable_page'
   kernel/power/snapshot.c:1283: warning: Function parameter or member 'pfn' not described in 'saveable_page'
   kernel/power/snapshot.c:1354: warning: Function parameter or member 'dst' not described in 'safe_copy_page'
   kernel/power/snapshot.c:1354: warning: Function parameter or member 's_page' not described in 'safe_copy_page'
   kernel/power/snapshot.c:1567: warning: Function parameter or member 'x' not described in '__fraction'
   kernel/power/snapshot.c:1567: warning: Function parameter or member 'multiplier' not described in '__fraction'
   kernel/power/snapshot.c:1567: warning: Function parameter or member 'base' not described in '__fraction'
   kernel/power/snapshot.c:1858: warning: Function parameter or member 'nr_highmem' not described in 'count_pages_for_highmem'
   kernel/power/snapshot.c:1876: warning: Function parameter or member 'nr_pages' not described in 'enough_free_mem'
   kernel/power/snapshot.c:1876: warning: Function parameter or member 'nr_highmem' not described in 'enough_free_mem'
   kernel/power/snapshot.c:1899: warning: Function parameter or member 'safe_needed' not described in 'get_highmem_buffer'
   kernel/power/snapshot.c:1912: warning: Function parameter or member 'bm' not described in 'alloc_highmem_pages'
   kernel/power/snapshot.c:1912: warning: Function parameter or member 'nr_highmem' not described in 'alloc_highmem_pages'
   kernel/power/snapshot.c:1947: warning: Function parameter or member 'copy_bm' not described in 'swsusp_alloc'
   kernel/power/snapshot.c:1947: warning: Function parameter or member 'nr_pages' not described in 'swsusp_alloc'
   kernel/power/snapshot.c:1947: warning: Function parameter or member 'nr_highmem' not described in 'swsusp_alloc'
   kernel/power/snapshot.c:2160: warning: Function parameter or member 'bm' not described in 'mark_unsafe_pages'
   kernel/power/snapshot.c:2195: warning: Function parameter or member 'info' not described in 'load_header'
   kernel/power/snapshot.c:2349: warning: Function parameter or member 'page' not described in 'get_highmem_page_buffer'
   kernel/power/snapshot.c:2349: warning: Function parameter or member 'ca' not described in 'get_highmem_page_buffer'
   kernel/power/snapshot.c:2534: warning: Function parameter or member 'bm' not described in 'get_buffer'
   kernel/power/snapshot.c:2534: warning: Function parameter or member 'ca' not described in 'get_buffer'
   kernel/power/snapshot.c:2658: warning: Function parameter or member 'handle' not described in 'snapshot_write_finalize'
   1 warning generated.
   2 warnings generated.
--
>> kernel/trace/ftrace.c:6859:20: warning: unused function 'ftrace_startup_enable' [-Wunused-function]
   static inline void ftrace_startup_enable(int command) { }
                      ^
   1 warning generated.
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'ip' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'remove' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5350: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter_ip'
   kernel/trace/ftrace.c:5364: warning: Function parameter or member 'ops' not described in 'ftrace_ops_set_global_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'ops' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'buf' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'len' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5392: warning: Function parameter or member 'reset' not described in 'ftrace_set_filter'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'ops' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'buf' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'len' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5411: warning: Function parameter or member 'reset' not described in 'ftrace_set_notrace'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'len' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5426: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_filter'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'buf' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'len' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:5442: warning: Function parameter or member 'reset' not described in 'ftrace_set_global_notrace'
   kernel/trace/ftrace.c:7471: warning: Function parameter or member 'ops' not described in 'register_ftrace_function'
   kernel/trace/ftrace.c:7493: warning: Function parameter or member 'ops' not described in 'unregister_ftrace_function'
   kernel/trace/ring_buffer.c:1141: warning: Function parameter or member 'cpu_buffer' not described in 'rb_check_list'
   kernel/trace/ring_buffer.c:1141: warning: Function parameter or member 'list' not described in 'rb_check_list'
   kernel/trace/trace.c:313: warning: Function parameter or member 'this_tr' not described in 'trace_array_put'
   kernel/trace/trace.c:392: warning: Function parameter or member 'filtered_no_pids' not described in 'trace_ignore_this_task'
   kernel/trace/trace_seq.c:142: warning: Function parameter or member 'args' not described in 'trace_seq_vprintf'
   kernel/trace/trace_preemptirq.c:88:16: warning: no previous prototype for function 'trace_hardirqs_on_caller' [-Wmissing-prototypes]
   __visible void trace_hardirqs_on_caller(unsigned long caller_addr)
                  ^
   kernel/trace/trace_preemptirq.c:88:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
   __visible void trace_hardirqs_on_caller(unsigned long caller_addr)
             ^
             static 
   kernel/trace/trace_preemptirq.c:103:16: warning: no previous prototype for function 'trace_hardirqs_off_caller' [-Wmissing-prototypes]
   __visible void trace_hardirqs_off_caller(unsigned long caller_addr)
                  ^
   kernel/trace/trace_preemptirq.c:103:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
   __visible void trace_hardirqs_off_caller(unsigned long caller_addr)
             ^
             static 
   2 warnings generated.
   In file included from kernel/trace/fgraph.c:10:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   include/linux/memcontrol.h:45:30: warning: implicit conversion from enumeration type 'enum memcg_stat_item' to different enumeration type 'enum node_stat_item' [-Wenum-conversion]
           return vmstat_item_in_bytes(item);
                  ~~~~~~~~~~~~~~~~~~~~ ^~~~
   kernel/trace/fgraph.c:232:15: warning: no previous prototype for function 'ftrace_return_to_handler' [-Wmissing-prototypes]
   unsigned long ftrace_return_to_handler(unsigned long frame_pointer)
                 ^
   kernel/trace/fgraph.c:232:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   unsigned long ftrace_return_to_handler(unsigned long frame_pointer)
   ^
   static 
   kernel/trace/fgraph.c:348:6: warning: no previous prototype for function 'ftrace_graph_sleep_time_control' [-Wmissing-prototypes]
   void ftrace_graph_sleep_time_control(bool enable)
        ^
   kernel/trace/fgraph.c:348:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void ftrace_graph_sleep_time_control(bool enable)
   ^
   static 
   3kernel/trace/trace_events_filter.c:1565:1:  warningwarning: unused function 'event_set_no_set_filter_flag' [-Wunused-function]s
    generated.
   event_set_no_set_filter_flag(struct trace_event_file *file)
   ^
   kernel/trace/trace_events_filter.c:1571:1: warning: unused function 'event_clear_no_set_filter_flag' [-Wunused-function]
   event_clear_no_set_filter_flag(struct trace_event_file *file)
   ^
   kernel/trace/trace_events_filter.c:1577:1: warning: unused function 'event_no_set_filter_flag' [-Wunused-function]
   event_no_set_filter_flag(struct trace_event_file *file)
   ^
   kernel/trace/fgraph.c:298: warning: Function parameter or member 'task' not described in 'ftrace_graph_ret_addr'
   kernel/trace/fgraph.c:298: warning: Function parameter or member 'idx' not described in 'ftrace_graph_ret_addr'
   kernel/trace/fgraph.c:298: warning: Function parameter or member 'ret' not described in 'ftrace_graph_ret_addr'
   kernel/trace/fgraph.c:298: warning: Function parameter or member 'retp' not described in 'ftrace_graph_ret_addr'
   kernel/trace/trace_branch.c:205:6: warning: no previous prototype for function 'ftrace_likely_update' [-Wmissing-prototypes]
   void ftrace_likely_update(struct ftrace_likely_data *f, int val,
        ^
   kernel/trace/trace_branch.c:205:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void ftrace_likely_update(struct ftrace_likely_data *f, int val,
   ^
   static 
   1 warning generated.
   kernel/trace/trace_events_trigger.c:58: warning: Function parameter or member 'event' not described in 'event_triggers_call'
   kernel/trace/trace_events_trigger.c:917: warning: Function parameter or member 'named_data' not described in 'set_named_trigger_data'
   3 warnings generated.
   kernel/trace/trace_events_filter.c:99: warning: cannot understand function prototype: 'struct prog_entry '
   kernel/trace/trace_events_filter.c:118: warning: Function parameter or member 'invert' not described in 'update_preds'
   kernel/trace/trace_events_filter.c:118: warning: Excess function parameter 'when_to_branch' description in 'update_preds'
   kernel/trace/trace_events_filter.c:1736: warning: Function parameter or member 'tr' not described in 'create_filter'
   kernel/trace/trace_events_filter.c:1736: warning: Function parameter or member 'filter_string' not described in 'create_filter'
   kernel/trace/trace_events_filter.c:1736: warning: Excess function parameter 'filter_str' description in 'create_filter'
   kernel/trace/trace_events_filter.c:1776: warning: Function parameter or member 'dir' not described in 'create_system_filter'
   kernel/trace/trace_events_filter.c:1776: warning: Function parameter or member 'tr' not described in 'create_system_filter'
   kernel/trace/trace_events_filter.c:1776: warning: Excess function parameter 'system' description in 'create_system_filter'
..

vim +/decrement_wakelocks_number +74 kernel/power/wakelock.c

c73893e2ca731b Rafael J. Wysocki 2012-05-05  73  
c73893e2ca731b Rafael J. Wysocki 2012-05-05 @74  static inline void decrement_wakelocks_number(void)
c73893e2ca731b Rafael J. Wysocki 2012-05-05  75  {
c73893e2ca731b Rafael J. Wysocki 2012-05-05  76  	number_of_wakelocks--;
c73893e2ca731b Rafael J. Wysocki 2012-05-05  77  }
c73893e2ca731b Rafael J. Wysocki 2012-05-05  78  #else /* CONFIG_PM_WAKELOCKS_LIMIT = 0 */
c73893e2ca731b Rafael J. Wysocki 2012-05-05  79  static inline bool wakelocks_limit_exceeded(void) { return false; }
c73893e2ca731b Rafael J. Wysocki 2012-05-05  80  static inline void increment_wakelocks_number(void) {}
c73893e2ca731b Rafael J. Wysocki 2012-05-05  81  static inline void decrement_wakelocks_number(void) {}
c73893e2ca731b Rafael J. Wysocki 2012-05-05  82  #endif /* CONFIG_PM_WAKELOCKS_LIMIT */
c73893e2ca731b Rafael J. Wysocki 2012-05-05  83  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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