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Date: Fri, 15 Dec 2023 00:18:55 +0800
From: kernel test robot <lkp@...el.com>
To: Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: drivers/cpufreq/powernv-cpufreq.c:469:25: sparse: sparse: restricted
__be64 degrades to integer
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5bd7ef53ffe5ca580e93e74eb8c81ed191ddc4bd
commit: cb166fa937a2fbc14badcafca86202354c34a213 cpufreq: powernv: Register for OCC related opal_message notification
date: 8 years ago
config: powerpc64-randconfig-r113-20231107 (https://download.01.org/0day-ci/archive/20231215/202312150045.vKWdsr3O-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231215/202312150045.vKWdsr3O-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312150045.vKWdsr3O-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/cpufreq/powernv-cpufreq.c:175:18: sparse: sparse: symbol 'cpufreq_freq_attr_cpuinfo_nominal_freq' was not declared. Should it be static?
drivers/cpufreq/powernv-cpufreq.c:436:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] type @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:436:19: sparse: expected restricted __be64 [usertype] type
drivers/cpufreq/powernv-cpufreq.c:436:19: sparse: got unsigned long long
drivers/cpufreq/powernv-cpufreq.c:458:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] chip @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:458:27: sparse: expected restricted __be64 [usertype] chip
drivers/cpufreq/powernv-cpufreq.c:458:27: sparse: got unsigned long long
drivers/cpufreq/powernv-cpufreq.c:459:38: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] throttle_status @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:459:38: sparse: expected restricted __be64 [usertype] throttle_status
drivers/cpufreq/powernv-cpufreq.c:459:38: sparse: got unsigned long long
>> drivers/cpufreq/powernv-cpufreq.c:469:25: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:470:25: sparse: sparse: cast from restricted __be64
drivers/cpufreq/powernv-cpufreq.c:470:25: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:474:25: sparse: sparse: cast from restricted __be64
drivers/cpufreq/powernv-cpufreq.c:474:25: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:438:21: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:438:21: sparse: sparse: restricted __be64 degrades to integer
In file included from include/linux/kernel.h:11,
from drivers/cpufreq/powernv-cpufreq.c:22:
include/linux/log2.h:22:1: warning: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Wattributes]
22 | int ____ilog2_NaN(void);
| ^~~
drivers/cpufreq/powernv-cpufreq.c: In function 'powernv_cpufreq_throttle_check':
drivers/cpufreq/powernv-cpufreq.c:318:33: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
318 | if (chips[i].id == cpu_to_chip_id(cpu))
| ^~
In file included from include/linux/rcupdate.h:40,
from include/linux/idr.h:18,
from include/linux/kernfs.h:14,
from include/linux/sysfs.h:15,
from drivers/cpufreq/powernv-cpufreq.c:23:
drivers/cpufreq/powernv-cpufreq.c: In function 'init_chip_info':
include/linux/cpumask.h:221:23: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
221 | (cpu) < nr_cpu_ids;)
| ^
include/linux/cpumask.h:714:36: note: in expansion of macro 'for_each_cpu'
714 | #define for_each_possible_cpu(cpu) for_each_cpu((cpu), cpu_possible_mask)
| ^~~~~~~~~~~~
drivers/cpufreq/powernv-cpufreq.c:511:9: note: in expansion of macro 'for_each_possible_cpu'
511 | for_each_possible_cpu(cpu) {
| ^~~~~~~~~~~~~~~~~~~~~
drivers/cpufreq/powernv-cpufreq.c:524:23: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
524 | for (i = 0; i < nr_chips; i++) {
| ^
vim +469 drivers/cpufreq/powernv-cpufreq.c
417
418 static char throttle_reason[][30] = {
419 "No throttling",
420 "Power Cap",
421 "Processor Over Temperature",
422 "Power Supply Failure",
423 "Over Current",
424 "OCC Reset"
425 };
426
427 static int powernv_cpufreq_occ_msg(struct notifier_block *nb,
428 unsigned long msg_type, void *_msg)
429 {
430 struct opal_msg *msg = _msg;
431 struct opal_occ_msg omsg;
432
433 if (msg_type != OPAL_MSG_OCC)
434 return 0;
435
> 436 omsg.type = be64_to_cpu(msg->params[0]);
437
438 switch (omsg.type) {
439 case OCC_RESET:
440 occ_reset = true;
441 /*
442 * powernv_cpufreq_throttle_check() is called in
443 * target() callback which can detect the throttle state
444 * for governors like ondemand.
445 * But static governors will not call target() often thus
446 * report throttling here.
447 */
448 if (!throttled) {
449 throttled = true;
450 pr_crit("CPU Frequency is throttled\n");
451 }
452 pr_info("OCC: Reset\n");
453 break;
454 case OCC_LOAD:
455 pr_info("OCC: Loaded\n");
456 break;
457 case OCC_THROTTLE:
458 omsg.chip = be64_to_cpu(msg->params[1]);
459 omsg.throttle_status = be64_to_cpu(msg->params[2]);
460
461 if (occ_reset) {
462 occ_reset = false;
463 throttled = false;
464 pr_info("OCC: Active\n");
465 return 0;
466 }
467
468 if (omsg.throttle_status &&
> 469 omsg.throttle_status <= OCC_MAX_THROTTLE_STATUS)
470 pr_info("OCC: Chip %u Pmax reduced due to %s\n",
471 (unsigned int)omsg.chip,
472 throttle_reason[omsg.throttle_status]);
473 else if (!omsg.throttle_status)
474 pr_info("OCC: Chip %u %s\n", (unsigned int)omsg.chip,
475 throttle_reason[omsg.throttle_status]);
476 }
477 return 0;
478 }
479
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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