| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 28 Oct 2015 04:44:49 +0800
From: kbuild test robot <lkp@...el.com>
To: Bálint Czobor <czoborbalint@...il.com>
Cc: kbuild-all@...org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
Mike Chan <mike@...roid.com>,
Todd Poynor <toddpoynor@...gle.com>,
Bálint Czobor <czoborbalint@...il.com>
Subject: Re: [PATCH 01/70] cpufreq: interactive: New 'interactive' governor
Hi Mike,
[auto build test ERROR on pm/linux-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
url: https://github.com/0day-ci/linux/commits/B-lint-Czobor/cpufreq-interactive-New-interactive-governor/20151028-020715
config: sparc64-allyesconfig (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=sparc64
All errors (new ones prefixed by >>):
drivers/cpufreq/cpufreq_interactive.c: In function 'store_hispeed_freq':
drivers/cpufreq/cpufreq_interactive.c:446:2: error: implicit declaration of function 'strict_strtoull' [-Werror=implicit-function-declaration]
ret = strict_strtoull(buf, 0, &val);
^
drivers/cpufreq/cpufreq_interactive.c: In function 'store_go_hispeed_load':
drivers/cpufreq/cpufreq_interactive.c:469:2: error: implicit declaration of function 'strict_strtoul' [-Werror=implicit-function-declaration]
ret = strict_strtoul(buf, 0, &val);
^
drivers/cpufreq/cpufreq_interactive.c: In function 'cpufreq_interactive_idle_notifier':
>> drivers/cpufreq/cpufreq_interactive.c:623:7: error: 'IDLE_START' undeclared (first use in this function)
case IDLE_START:
^
drivers/cpufreq/cpufreq_interactive.c:623:7: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/cpufreq/cpufreq_interactive.c:626:7: error: 'IDLE_END' undeclared (first use in this function)
case IDLE_END:
^
drivers/cpufreq/cpufreq_interactive.c: In function 'cpufreq_interactive_init':
>> drivers/cpufreq/cpufreq_interactive.c:678:2: error: implicit declaration of function 'idle_notifier_register' [-Werror=implicit-function-declaration]
idle_notifier_register(&cpufreq_interactive_idle_nb);
^
cc1: some warnings being treated as errors
vim +/IDLE_START +623 drivers/cpufreq/cpufreq_interactive.c
440 struct attribute *attr, const char *buf,
441 size_t count)
442 {
443 int ret;
444 u64 val;
445
> 446 ret = strict_strtoull(buf, 0, &val);
447 if (ret < 0)
448 return ret;
449 hispeed_freq = val;
450 return count;
451 }
452
453 static struct global_attr hispeed_freq_attr = __ATTR(hispeed_freq, 0644,
454 show_hispeed_freq, store_hispeed_freq);
455
456
457 static ssize_t show_go_hispeed_load(struct kobject *kobj,
458 struct attribute *attr, char *buf)
459 {
460 return sprintf(buf, "%lu\n", go_hispeed_load);
461 }
462
463 static ssize_t store_go_hispeed_load(struct kobject *kobj,
464 struct attribute *attr, const char *buf, size_t count)
465 {
466 int ret;
467 unsigned long val;
468
> 469 ret = strict_strtoul(buf, 0, &val);
470 if (ret < 0)
471 return ret;
472 go_hispeed_load = val;
473 return count;
474 }
475
476 static struct global_attr go_hispeed_load_attr = __ATTR(go_hispeed_load, 0644,
477 show_go_hispeed_load, store_go_hispeed_load);
478
479 static ssize_t show_min_sample_time(struct kobject *kobj,
480 struct attribute *attr, char *buf)
481 {
482 return sprintf(buf, "%lu\n", min_sample_time);
483 }
484
485 static ssize_t store_min_sample_time(struct kobject *kobj,
486 struct attribute *attr, const char *buf, size_t count)
487 {
488 int ret;
489 unsigned long val;
490
491 ret = strict_strtoul(buf, 0, &val);
492 if (ret < 0)
493 return ret;
494 min_sample_time = val;
495 return count;
496 }
497
498 static struct global_attr min_sample_time_attr = __ATTR(min_sample_time, 0644,
499 show_min_sample_time, store_min_sample_time);
500
501 static ssize_t show_timer_rate(struct kobject *kobj,
502 struct attribute *attr, char *buf)
503 {
504 return sprintf(buf, "%lu\n", timer_rate);
505 }
506
507 static ssize_t store_timer_rate(struct kobject *kobj,
508 struct attribute *attr, const char *buf, size_t count)
509 {
510 int ret;
511 unsigned long val;
512
513 ret = strict_strtoul(buf, 0, &val);
514 if (ret < 0)
515 return ret;
516 timer_rate = val;
517 return count;
518 }
519
520 static struct global_attr timer_rate_attr = __ATTR(timer_rate, 0644,
521 show_timer_rate, store_timer_rate);
522
523 static struct attribute *interactive_attributes[] = {
524 &hispeed_freq_attr.attr,
525 &go_hispeed_load_attr.attr,
526 &min_sample_time_attr.attr,
527 &timer_rate_attr.attr,
528 NULL,
529 };
530
531 static struct attribute_group interactive_attr_group = {
532 .attrs = interactive_attributes,
533 .name = "interactive",
534 };
535
536 static int cpufreq_governor_interactive(struct cpufreq_policy *policy,
537 unsigned int event)
538 {
539 int rc;
540 unsigned int j;
541 struct cpufreq_interactive_cpuinfo *pcpu;
542 struct cpufreq_frequency_table *freq_table;
543
544 switch (event) {
545 case CPUFREQ_GOV_START:
546 if (!cpu_online(policy->cpu))
547 return -EINVAL;
548
549 freq_table =
550 cpufreq_frequency_get_table(policy->cpu);
551
552 for_each_cpu(j, policy->cpus) {
553 pcpu = &per_cpu(cpuinfo, j);
554 pcpu->policy = policy;
555 pcpu->target_freq = policy->cur;
556 pcpu->freq_table = freq_table;
557 pcpu->freq_change_time_in_idle =
558 get_cpu_idle_time_us(j,
559 &pcpu->freq_change_time);
560 pcpu->governor_enabled = 1;
561 smp_wmb();
562 }
563
564 if (!hispeed_freq)
565 hispeed_freq = policy->max;
566
567 /*
568 * Do not register the idle hook and create sysfs
569 * entries if we have already done so.
570 */
571 if (atomic_inc_return(&active_count) > 1)
572 return 0;
573
574 rc = sysfs_create_group(cpufreq_global_kobject,
575 &interactive_attr_group);
576 if (rc)
577 return rc;
578
579 break;
580
581 case CPUFREQ_GOV_STOP:
582 for_each_cpu(j, policy->cpus) {
583 pcpu = &per_cpu(cpuinfo, j);
584 pcpu->governor_enabled = 0;
585 smp_wmb();
586 del_timer_sync(&pcpu->cpu_timer);
587
588 /*
589 * Reset idle exit time since we may cancel the timer
590 * before it can run after the last idle exit time,
591 * to avoid tripping the check in idle exit for a timer
592 * that is trying to run.
593 */
594 pcpu->idle_exit_time = 0;
595 }
596
597 flush_work(&freq_scale_down_work);
598 if (atomic_dec_return(&active_count) > 0)
599 return 0;
600
601 sysfs_remove_group(cpufreq_global_kobject,
602 &interactive_attr_group);
603
604 break;
605
606 case CPUFREQ_GOV_LIMITS:
607 if (policy->max < policy->cur)
608 __cpufreq_driver_target(policy,
609 policy->max, CPUFREQ_RELATION_H);
610 else if (policy->min > policy->cur)
611 __cpufreq_driver_target(policy,
612 policy->min, CPUFREQ_RELATION_L);
613 break;
614 }
615 return 0;
616 }
617
618 static int cpufreq_interactive_idle_notifier(struct notifier_block *nb,
619 unsigned long val,
620 void *data)
621 {
622 switch (val) {
> 623 case IDLE_START:
624 cpufreq_interactive_idle_start();
625 break;
> 626 case IDLE_END:
627 cpufreq_interactive_idle_end();
628 break;
629 }
630
631 return 0;
632 }
633
634 static struct notifier_block cpufreq_interactive_idle_nb = {
635 .notifier_call = cpufreq_interactive_idle_notifier,
636 };
637
638 static int __init cpufreq_interactive_init(void)
639 {
640 unsigned int i;
641 struct cpufreq_interactive_cpuinfo *pcpu;
642 struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
643
644 go_hispeed_load = DEFAULT_GO_HISPEED_LOAD;
645 min_sample_time = DEFAULT_MIN_SAMPLE_TIME;
646 timer_rate = DEFAULT_TIMER_RATE;
647
648 /* Initalize per-cpu timers */
649 for_each_possible_cpu(i) {
650 pcpu = &per_cpu(cpuinfo, i);
651 init_timer(&pcpu->cpu_timer);
652 pcpu->cpu_timer.function = cpufreq_interactive_timer;
653 pcpu->cpu_timer.data = i;
654 }
655
656 up_task = kthread_create(cpufreq_interactive_up_task, NULL,
657 "kinteractiveup");
658 if (IS_ERR(up_task))
659 return PTR_ERR(up_task);
660
661 sched_setscheduler_nocheck(up_task, SCHED_FIFO, ¶m);
662 get_task_struct(up_task);
663
664 /* No rescuer thread, bind to CPU queuing the work for possibly
665 warm cache (probably doesn't matter much). */
666 down_wq = alloc_workqueue("knteractive_down", 0, 1);
667
668 if (!down_wq)
669 goto err_freeuptask;
670
671 INIT_WORK(&freq_scale_down_work,
672 cpufreq_interactive_freq_down);
673
674 spin_lock_init(&up_cpumask_lock);
675 spin_lock_init(&down_cpumask_lock);
676 mutex_init(&set_speed_lock);
677
> 678 idle_notifier_register(&cpufreq_interactive_idle_nb);
679
680 return cpufreq_register_governor(&cpufreq_gov_interactive);
681
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Download attachment ".config.gz" of type "application/octet-stream" (43764 bytes)
Powered by blists - more mailing lists