* Re: [RFC 3/6] percpu-refcount: Extend managed mode to allow runtime switching
[not found] <20240916050811.473556-4-Neeraj.Upadhyay@amd.com>
@ 2024-09-16 19:07 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-09-16 19:07 UTC (permalink / raw)
To: Neeraj Upadhyay; +Cc: llvm, oe-kbuild-all
Hi Neeraj,
[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-nonmm-unstable]
[also build test ERROR on linus/master dennis-percpu/for-next v6.11]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Neeraj-Upadhyay/percpu-refcount-Add-managed-mode-for-RCU-released-objects/20240916-131210
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link: https://lore.kernel.org/r/20240916050811.473556-4-Neeraj.Upadhyay%40amd.com
patch subject: [RFC 3/6] percpu-refcount: Extend managed mode to allow runtime switching
config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20240917/202409170250.ukGxk6pH-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240917/202409170250.ukGxk6pH-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/202409170250.ukGxk6pH-lkp@intel.com/
All errors (new ones prefixed by >>):
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^
include/linux/compiler_types.h:477:10: note: expanded from macro '__native_word'
477 | (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
| ^
include/linux/compiler_types.h:510:22: note: expanded from macro 'compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:498:23: note: expanded from macro '_compiletime_assert'
498 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:490:9: note: expanded from macro '__compiletime_assert'
490 | if (!(condition)) \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^
include/linux/compiler_types.h:477:39: note: expanded from macro '__native_word'
477 | (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
| ^
include/linux/compiler_types.h:510:22: note: expanded from macro 'compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:498:23: note: expanded from macro '_compiletime_assert'
498 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:490:9: note: expanded from macro '__compiletime_assert'
490 | if (!(condition)) \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^
include/linux/compiler_types.h:478:10: note: expanded from macro '__native_word'
478 | sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
| ^
include/linux/compiler_types.h:510:22: note: expanded from macro 'compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:498:23: note: expanded from macro '_compiletime_assert'
498 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:490:9: note: expanded from macro '__compiletime_assert'
490 | if (!(condition)) \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
include/asm-generic/rwonce.h:36:35: note: expanded from macro 'compiletime_assert_rwonce_type'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^
include/linux/compiler_types.h:478:38: note: expanded from macro '__native_word'
478 | sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
| ^
include/linux/compiler_types.h:510:22: note: expanded from macro 'compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:498:23: note: expanded from macro '_compiletime_assert'
498 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:490:9: note: expanded from macro '__compiletime_assert'
490 | if (!(condition)) \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
include/asm-generic/rwonce.h:36:48: note: expanded from macro 'compiletime_assert_rwonce_type'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^
include/linux/compiler_types.h:510:22: note: expanded from macro 'compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:498:23: note: expanded from macro '_compiletime_assert'
498 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:490:9: note: expanded from macro '__compiletime_assert'
490 | if (!(condition)) \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
include/linux/compiler_types.h:466:13: note: expanded from macro '__unqual_scalar_typeof'
466 | _Generic((x), \
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
include/linux/compiler_types.h:473:15: note: expanded from macro '__unqual_scalar_typeof'
473 | default: (x)))
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
>> lib/percpu-refcount.c:741:19: error: use of undeclared identifier 'last_percpu_ref_node'; did you mean 'next_percpu_ref_node'?
741 | while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
| ^~~~~~~~~~~~~~~~~~~~
| next_percpu_ref_node
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:72: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
lib/percpu-refcount.c:51:26: note: 'next_percpu_ref_node' declared here
51 | static struct list_head *next_percpu_ref_node = &percpu_ref_manage_head;
| ^
8 errors generated.
vim +741 lib/percpu-refcount.c
377193f4f16a1b Neeraj Upadhyay 2024-09-16 722
377193f4f16a1b Neeraj Upadhyay 2024-09-16 723 void percpu_ref_test_flush_release_work(void)
377193f4f16a1b Neeraj Upadhyay 2024-09-16 724 {
377193f4f16a1b Neeraj Upadhyay 2024-09-16 725 int max_flush = READ_ONCE(max_scan_count);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 726 int max_count = 1000;
377193f4f16a1b Neeraj Upadhyay 2024-09-16 727
377193f4f16a1b Neeraj Upadhyay 2024-09-16 728 /* Complete any executing release work */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 729 flush_delayed_work(&percpu_ref_release_work);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 730 /* Scan till the end of the llist */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 731 WRITE_ONCE(max_scan_count, INT_MAX);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 732 /* max scan count update visible to release work */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 733 smp_mb();
377193f4f16a1b Neeraj Upadhyay 2024-09-16 734 flush_delayed_work(&percpu_ref_release_work);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 735 /* max scan count update visible to release work */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 736 smp_mb();
377193f4f16a1b Neeraj Upadhyay 2024-09-16 737 WRITE_ONCE(max_scan_count, 1);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 738 /* max scan count update visible to work */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 739 smp_mb();
377193f4f16a1b Neeraj Upadhyay 2024-09-16 740 flush_delayed_work(&percpu_ref_release_work);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 @741 while (READ_ONCE(last_percpu_ref_node) != NULL && max_count--)
377193f4f16a1b Neeraj Upadhyay 2024-09-16 742 flush_delayed_work(&percpu_ref_release_work);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 743 /* max scan count update visible to work */
377193f4f16a1b Neeraj Upadhyay 2024-09-16 744 smp_mb();
377193f4f16a1b Neeraj Upadhyay 2024-09-16 745 WRITE_ONCE(max_scan_count, max_flush);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 746 }
377193f4f16a1b Neeraj Upadhyay 2024-09-16 747 EXPORT_SYMBOL_GPL(percpu_ref_test_flush_release_work);
377193f4f16a1b Neeraj Upadhyay 2024-09-16 748
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