* [qais-yousef:sched-setscheduler-hide 2/11] kernel/rcu/rcutorture.c:3174:9: error: call to undeclared function 'rcu_get_gp_kthreads_prio'; ISO C99 and later do not support implicit function declarations
@ 2023-10-12 17:28 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-10-12 17:28 UTC (permalink / raw)
To: Qais Yousef; +Cc: llvm, oe-kbuild-all
tree: https://github.com/qais-yousef/linux sched-setscheduler-hide
head: 557fb1e21399de5f674beb93fa6793adce124cc2
commit: 029b407f286d7bc9a7ace79c65483efa8ead8671 [2/11] rcu: Use a new sched_set_rcu_fifo() to set gp kthread prio
config: hexagon-randconfig-r025-20230826 (https://download.01.org/0day-ci/archive/20231013/202310130106.IaEpFCPA-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231013/202310130106.IaEpFCPA-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310130106.IaEpFCPA-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from kernel/rcu/rcutorture.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from kernel/rcu/rcutorture.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from kernel/rcu/rcutorture.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
kernel/rcu/rcutorture.c:412:16: warning: variable 'started' set but not used [-Wunused-but-set-variable]
412 | unsigned long started;
| ^
kernel/rcu/rcutorture.c:413:16: warning: variable 'completed' set but not used [-Wunused-but-set-variable]
413 | unsigned long completed;
| ^
kernel/rcu/rcutorture.c:416:21: warning: variable 'ts' set but not used [-Wunused-but-set-variable]
416 | unsigned long long ts;
| ^
kernel/rcu/rcutorture.c:1967:21: warning: variable 'ts' set but not used [-Wunused-but-set-variable]
1967 | unsigned long long ts;
| ^
>> kernel/rcu/rcutorture.c:3174:9: error: call to undeclared function 'rcu_get_gp_kthreads_prio'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
3174 | prio = rcu_get_gp_kthreads_prio();
| ^
10 warnings and 1 error generated.
vim +/rcu_get_gp_kthreads_prio +3174 kernel/rcu/rcutorture.c
fae4b54f28f034d kernel/rcutorture.c Paul E. McKenney 2012-02-20 3163
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3164) static bool rcu_torture_can_boost(void)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3165) {
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3166) static int boost_warn_once;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3167) int prio;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3168)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3169) if (!(test_boost == 1 && cur_ops->can_boost) && test_boost != 2)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3170) return false;
ea6d962e80b6199 kernel/rcu/rcutorture.c Paul E. McKenney 2021-03-30 3171 if (!cur_ops->start_gp_poll || !cur_ops->poll_gp_state)
5e59fba573e64cf kernel/rcu/rcutorture.c Paul E. McKenney 2021-01-15 3172 return false;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3173)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 @3174) prio = rcu_get_gp_kthreads_prio();
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3175) if (!prio)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3176) return false;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3177)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3178) if (prio < 2) {
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3179) if (boost_warn_once == 1)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3180) return false;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3181)
bf5b64355a3ce41 kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3182) pr_alert("%s: WARN: RCU kthread priority too low to test boosting. Skipping RCU boost test. Try passing rcutree.kthread_prio > 1 on the kernel command line.\n", KBUILD_MODNAME);
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3183) boost_warn_once = 1;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3184) return false;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3185) }
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3186)
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3187) return true;
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3188) }
4babd855fd6137f kernel/rcu/rcutorture.c Joel Fernandes (Google 2018-06-19 3189)
:::::: The code at line 3174 was first introduced by commit
:::::: 4babd855fd6137f9792117eb73b096c221a49d3c rcutorture: Add support to detect if boost kthread prio is too low
:::::: TO: Joel Fernandes (Google) <joel@joelfernandes.org>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2023-10-12 17:28 [qais-yousef:sched-setscheduler-hide 2/11] kernel/rcu/rcutorture.c:3174:9: error: call to undeclared function 'rcu_get_gp_kthreads_prio'; ISO C99 and later do not support implicit function declarations kernel test robot
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