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Date: Thu, 17 Aug 2023 00:35:58 +0800
From: kernel test robot <lkp@...el.com>
To: David Vernet <void@...ifault.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Alexei Starovoitov <ast@...nel.org>
Subject: kernel/bpf/cpumask.c:143:17: warning: no previous declaration for
'bpf_cpumask_first_and'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4853c74bd7ab7fdb83f319bd9ace8a08c031e9b6
commit: 5ba3a7a851e3ebffc4cb8f052a4581c4d8af3ae3 bpf: Add bpf_cpumask_first_and() kfunc
date: 9 weeks ago
config: x86_64-randconfig-x076-20230816 (https://download.01.org/0day-ci/archive/20230817/202308170002.DfQzgaVh-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce: (https://download.01.org/0day-ci/archive/20230817/202308170002.DfQzgaVh-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/202308170002.DfQzgaVh-lkp@intel.com/
All warnings (new ones prefixed by >>):
kernel/bpf/cpumask.c:53:33: warning: no previous declaration for 'bpf_cpumask_create' [-Wmissing-declarations]
__bpf_kfunc struct bpf_cpumask *bpf_cpumask_create(void)
^~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:79:33: warning: no previous declaration for 'bpf_cpumask_acquire' [-Wmissing-declarations]
__bpf_kfunc struct bpf_cpumask *bpf_cpumask_acquire(struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:103:18: warning: no previous declaration for 'bpf_cpumask_release' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_release(struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:116:17: warning: no previous declaration for 'bpf_cpumask_first' [-Wmissing-declarations]
__bpf_kfunc u32 bpf_cpumask_first(const struct cpumask *cpumask)
^~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:129:17: warning: no previous declaration for 'bpf_cpumask_first_zero' [-Wmissing-declarations]
__bpf_kfunc u32 bpf_cpumask_first_zero(const struct cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~~~~
>> kernel/bpf/cpumask.c:143:17: warning: no previous declaration for 'bpf_cpumask_first_and' [-Wmissing-declarations]
__bpf_kfunc u32 bpf_cpumask_first_and(const struct cpumask *src1,
^~~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:154:18: warning: no previous declaration for 'bpf_cpumask_set_cpu' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_set_cpu(u32 cpu, struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:167:18: warning: no previous declaration for 'bpf_cpumask_clear_cpu' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:184:18: warning: no previous declaration for 'bpf_cpumask_test_cpu' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_test_cpu(u32 cpu, const struct cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:201:18: warning: no previous declaration for 'bpf_cpumask_test_and_set_cpu' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_test_and_set_cpu(u32 cpu, struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:219:18: warning: no previous declaration for 'bpf_cpumask_test_and_clear_cpu' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_test_and_clear_cpu(u32 cpu, struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:231:18: warning: no previous declaration for 'bpf_cpumask_setall' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_setall(struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:240:18: warning: no previous declaration for 'bpf_cpumask_clear' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_clear(struct bpf_cpumask *cpumask)
^~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:257:18: warning: no previous declaration for 'bpf_cpumask_and' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_and(struct bpf_cpumask *dst,
^~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:272:18: warning: no previous declaration for 'bpf_cpumask_or' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_or(struct bpf_cpumask *dst,
^~~~~~~~~~~~~~
kernel/bpf/cpumask.c:287:18: warning: no previous declaration for 'bpf_cpumask_xor' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_xor(struct bpf_cpumask *dst,
^~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:305:18: warning: no previous declaration for 'bpf_cpumask_equal' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_equal(const struct cpumask *src1, const struct cpumask *src2)
^~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:321:18: warning: no previous declaration for 'bpf_cpumask_intersects' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_intersects(const struct cpumask *src1, const struct cpumask *src2)
^~~~~~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:337:18: warning: no previous declaration for 'bpf_cpumask_subset' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_subset(const struct cpumask *src1, const struct cpumask *src2)
^~~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:352:18: warning: no previous declaration for 'bpf_cpumask_empty' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_empty(const struct cpumask *cpumask)
^~~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:367:18: warning: no previous declaration for 'bpf_cpumask_full' [-Wmissing-declarations]
__bpf_kfunc bool bpf_cpumask_full(const struct cpumask *cpumask)
^~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:379:18: warning: no previous declaration for 'bpf_cpumask_copy' [-Wmissing-declarations]
__bpf_kfunc void bpf_cpumask_copy(struct bpf_cpumask *dst, const struct cpumask *src)
^~~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:394:17: warning: no previous declaration for 'bpf_cpumask_any' [-Wmissing-declarations]
__bpf_kfunc u32 bpf_cpumask_any(const struct cpumask *cpumask)
^~~~~~~~~~~~~~~
kernel/bpf/cpumask.c:411:17: warning: no previous declaration for 'bpf_cpumask_any_and' [-Wmissing-declarations]
__bpf_kfunc u32 bpf_cpumask_any_and(const struct cpumask *src1, const struct cpumask *src2)
^~~~~~~~~~~~~~~~~~~
vim +/bpf_cpumask_first_and +143 kernel/bpf/cpumask.c
94
95 /**
96 * bpf_cpumask_release() - Release a previously acquired BPF cpumask.
97 * @cpumask: The cpumask being released.
98 *
99 * Releases a previously acquired reference to a BPF cpumask. When the final
100 * reference of the BPF cpumask has been released, it is subsequently freed in
101 * an RCU callback in the BPF memory allocator.
102 */
> 103 __bpf_kfunc void bpf_cpumask_release(struct bpf_cpumask *cpumask)
104 {
105 if (refcount_dec_and_test(&cpumask->usage))
106 call_rcu(&cpumask->rcu, cpumask_free_cb);
107 }
108
109 /**
110 * bpf_cpumask_first() - Get the index of the first nonzero bit in the cpumask.
111 * @cpumask: The cpumask being queried.
112 *
113 * Find the index of the first nonzero bit of the cpumask. A struct bpf_cpumask
114 * pointer may be safely passed to this function.
115 */
116 __bpf_kfunc u32 bpf_cpumask_first(const struct cpumask *cpumask)
117 {
118 return cpumask_first(cpumask);
119 }
120
121 /**
122 * bpf_cpumask_first_zero() - Get the index of the first unset bit in the
123 * cpumask.
124 * @cpumask: The cpumask being queried.
125 *
126 * Find the index of the first unset bit of the cpumask. A struct bpf_cpumask
127 * pointer may be safely passed to this function.
128 */
129 __bpf_kfunc u32 bpf_cpumask_first_zero(const struct cpumask *cpumask)
130 {
131 return cpumask_first_zero(cpumask);
132 }
133
134 /**
135 * bpf_cpumask_first_and() - Return the index of the first nonzero bit from the
136 * AND of two cpumasks.
137 * @src1: The first cpumask.
138 * @src2: The second cpumask.
139 *
140 * Find the index of the first nonzero bit of the AND of two cpumasks.
141 * struct bpf_cpumask pointers may be safely passed to @src1 and @src2.
142 */
> 143 __bpf_kfunc u32 bpf_cpumask_first_and(const struct cpumask *src1,
144 const struct cpumask *src2)
145 {
146 return cpumask_first_and(src1, src2);
147 }
148
--
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