Hi Grygorii, [auto build test ERROR on v4.3-rc6 -- if it's inappropriate base, please suggest rules for selecting the more suitable base] url: https://github.com/0day-ci/linux/commits/Grygorii-Strashko/PM-sleep-freeze-fix-bug-sleeping-function-called-from-invalid-context/20151021-043733 config: avr32-atngw100_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=avr32 All error/warnings (new ones prefixed by >>): >> kernel/power/suspend.c:32:31: error: linux/wait-simple.h: No such file or directory >> kernel/power/suspend.c:41: warning: type defaults to 'int' in declaration of 'DEFINE_SWAIT_HEAD' >> kernel/power/suspend.c:41: warning: parameter names (without types) in function declaration kernel/power/suspend.c: In function 'freeze_enter': >> kernel/power/suspend.c:74: error: implicit declaration of function 'swait_event' >> kernel/power/suspend.c:74: error: 'suspend_freeze_wait_head' undeclared (first use in this function) kernel/power/suspend.c:74: error: (Each undeclared identifier is reported only once kernel/power/suspend.c:74: error: for each function it appears in.) kernel/power/suspend.c: In function 'freeze_wake': >> kernel/power/suspend.c:95: error: implicit declaration of function 'swait_wake' kernel/power/suspend.c:95: error: 'suspend_freeze_wait_head' undeclared (first use in this function) vim +32 kernel/power/suspend.c 26 #include <linux/suspend.h> 27 #include <linux/syscore_ops.h> 28 #include <linux/ftrace.h> 29 #include <trace/events/power.h> 30 #include <linux/compiler.h> 31 #include <linux/moduleparam.h> > 32 #include <linux/wait-simple.h> 33 34 #include "power.h" 35 36 const char *pm_labels[] = { "mem", "standby", "freeze", NULL }; 37 const char *pm_states[PM_SUSPEND_MAX]; 38 39 static const struct platform_suspend_ops *suspend_ops; 40 static const struct platform_freeze_ops *freeze_ops; > 41 static DEFINE_SWAIT_HEAD(suspend_freeze_wait_head); 42 43 enum freeze_state __read_mostly suspend_freeze_state; 44 static DEFINE_RAW_SPINLOCK(suspend_freeze_lock); 45 46 void freeze_set_ops(const struct platform_freeze_ops *ops) 47 { 48 lock_system_sleep(); 49 freeze_ops = ops; 50 unlock_system_sleep(); 51 } 52 53 static void freeze_begin(void) 54 { 55 suspend_freeze_state = FREEZE_STATE_NONE; 56 } 57 58 static void freeze_enter(void) 59 { 60 if (pm_wakeup_pending()) 61 goto out; 62 63 raw_spin_lock_irq(&suspend_freeze_lock); 64 suspend_freeze_state = FREEZE_STATE_ENTER; 65 raw_spin_unlock_irq(&suspend_freeze_lock); 66 67 get_online_cpus(); 68 cpuidle_resume(); 69 70 /* Push all the CPUs into the idle loop. */ 71 wake_up_all_idle_cpus(); 72 pr_debug("PM: suspend-to-idle\n"); 73 /* Make the current CPU wait so it can enter the idle loop too. */ > 74 swait_event(suspend_freeze_wait_head, 75 suspend_freeze_state == FREEZE_STATE_WAKE); 76 pr_debug("PM: resume from suspend-to-idle\n"); 77 78 cpuidle_pause(); 79 put_online_cpus(); 80 81 raw_spin_lock_irq(&suspend_freeze_lock); 82 83 out: 84 suspend_freeze_state = FREEZE_STATE_NONE; 85 raw_spin_unlock_irq(&suspend_freeze_lock); 86 } 87 88 void freeze_wake(void) 89 { 90 unsigned long flags; 91 92 raw_spin_lock_irqsave(&suspend_freeze_lock, flags); 93 if (suspend_freeze_state > FREEZE_STATE_NONE) { 94 suspend_freeze_state = FREEZE_STATE_WAKE; > 95 swait_wake(&suspend_freeze_wait_head); 96 } 97 raw_spin_unlock_irqrestore(&suspend_freeze_lock, flags); 98 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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