linux-kernel - [tip:smp/hotplug 42/44] include/linux/jump_label.h:260:20: error: inlining failed in call to always_inline 'static_key_disable_cpuslocked.constprop.99': recursive inlining

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Date:   Sun, 23 Apr 2017 23:37:41 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:smp/hotplug 42/44] include/linux/jump_label.h:260:20: error:
 inlining failed in call to always_inline
 'static_key_disable_cpuslocked.constprop.99': recursive inlining

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git smp/hotplug
head:   8b836972c33553d3ff70954af090debfc9dc84c6
commit: 924726b2b5e5000dfb8eb6032651baed1b1bdc6c [42/44] perf: Cure hotplug lock ordering issues
config: x86_64-randconfig-n0-04232222 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        git checkout 924726b2b5e5000dfb8eb6032651baed1b1bdc6c
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   In file included from arch/x86/include/asm/string_64.h:5:0,
                    from arch/x86/include/asm/string.h:4,
                    from include/linux/string.h:18,
                    from include/linux/bitmap.h:8,
                    from include/linux/cpumask.h:11,
                    from arch/x86/include/asm/cpumask.h:4,
                    from arch/x86/include/asm/msr.h:10,
                    from arch/x86/include/asm/processor.h:20,
                    from arch/x86/include/asm/cpufeature.h:4,
                    from arch/x86/include/asm/thread_info.h:52,
                    from include/linux/thread_info.h:25,
                    from arch/x86/include/asm/preempt.h:6,
                    from include/linux/preempt.h:80,
                    from include/linux/spinlock.h:50,
                    from include/linux/wait.h:8,
                    from include/linux/fs.h:5,
                    from kernel/events/core.c:12:
   include/linux/jump_label.h: In function 'static_key_disable_cpuslocked.constprop.99':
>> include/linux/jump_label.h:260:20: error: inlining failed in call to always_inline 'static_key_disable_cpuslocked.constprop.99': recursive inlining
    static inline void static_key_disable_cpuslocked(struct static_key *key)
                       ^
   include/linux/jump_label.h:262:31: error: called from here
     static_key_disable_cpuslocked(key);
                                  ^
   include/linux/jump_label.h: In function 'perf_sched_delayed':
>> include/linux/jump_label.h:260:20: error: inlining failed in call to always_inline 'static_key_disable_cpuslocked.constprop.99': recursive inlining
    static inline void static_key_disable_cpuslocked(struct static_key *key)
                       ^
   include/linux/jump_label.h:262:31: error: called from here
     static_key_disable_cpuslocked(key);
                                  ^

vim +260 include/linux/jump_label.h

e33886b3 Peter Zijlstra  2015-07-24  244  	WARN_ON_ONCE(count < 0 || count > 1);
e33886b3 Peter Zijlstra  2015-07-24  245  
e33886b3 Peter Zijlstra  2015-07-24  246  	if (!count)
e33886b3 Peter Zijlstra  2015-07-24  247  		static_key_slow_inc(key);
e33886b3 Peter Zijlstra  2015-07-24  248  }
e33886b3 Peter Zijlstra  2015-07-24  249  
e33886b3 Peter Zijlstra  2015-07-24  250  static inline void static_key_disable(struct static_key *key)
e33886b3 Peter Zijlstra  2015-07-24  251  {
e33886b3 Peter Zijlstra  2015-07-24  252  	int count = static_key_count(key);
e33886b3 Peter Zijlstra  2015-07-24  253  
e33886b3 Peter Zijlstra  2015-07-24  254  	WARN_ON_ONCE(count < 0 || count > 1);
e33886b3 Peter Zijlstra  2015-07-24  255  
e33886b3 Peter Zijlstra  2015-07-24  256  	if (count)
e33886b3 Peter Zijlstra  2015-07-24  257  		static_key_slow_dec(key);
e33886b3 Peter Zijlstra  2015-07-24  258  }
e33886b3 Peter Zijlstra  2015-07-24  259  
fc932a04 Thomas Gleixner 2017-04-23 @260  static inline void static_key_disable_cpuslocked(struct static_key *key)
fc932a04 Thomas Gleixner 2017-04-23  261  {
fc932a04 Thomas Gleixner 2017-04-23  262  	static_key_disable_cpuslocked(key);
fc932a04 Thomas Gleixner 2017-04-23  263  }
fc932a04 Thomas Gleixner 2017-04-23  264  
1f69bf9c Jason Baron     2016-08-03  265  #define STATIC_KEY_INIT_TRUE	{ .enabled = ATOMIC_INIT(1) }
1f69bf9c Jason Baron     2016-08-03  266  #define STATIC_KEY_INIT_FALSE	{ .enabled = ATOMIC_INIT(0) }
1f69bf9c Jason Baron     2016-08-03  267  
1f69bf9c Jason Baron     2016-08-03  268  #endif	/* HAVE_JUMP_LABEL */

:::::: The code at line 260 was first introduced by commit
:::::: fc932a0477d0f16934847eacba1c8b7ccf71e650 jump_label: Provide static_key_[disable|/slow_dec]_cpuslocked()

:::::: TO: Thomas Gleixner <tglx@...utronix.de>
:::::: CC: Thomas Gleixner <tglx@...utronix.de>

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