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From: kernel test robot <lkp@intel.com>
To: Joe Damato <jdamato@fastly.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: Re: [RFC net-next 5/5] eventpoll: Control irq suspension for prefer_busy_poll
Date: Tue, 13 Aug 2024 15:19:07 +0800	[thread overview]
Message-ID: <202408131547.4WOQegMQ-lkp@intel.com> (raw)
In-Reply-To: <20240812125717.413108-6-jdamato@fastly.com>

Hi Joe,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Joe-Damato/net-Add-sysfs-parameter-irq_suspend_timeout/20240812-210114
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240812125717.413108-6-jdamato%40fastly.com
patch subject: [RFC net-next 5/5] eventpoll: Control irq suspension for prefer_busy_poll
config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240813/202408131547.4WOQegMQ-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project f86594788ce93b696675c94f54016d27a6c21d18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408131547.4WOQegMQ-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/202408131547.4WOQegMQ-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from fs/eventpoll.c:16:
   In file included from include/linux/mm.h:2228:
   include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     514 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from fs/eventpoll.c:33:
   In file included from arch/s390/include/asm/io.h:93:
   include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     548 |         val = __raw_readb(PCI_IOBASE + addr);
         |                           ~~~~~~~~~~ ^
   include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
      37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
         |                                                           ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
     102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
         |                                                      ^
   In file included from fs/eventpoll.c:33:
   In file included from arch/s390/include/asm/io.h:93:
   include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
      35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
         |                                                           ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
     115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
         |                                                      ^
   In file included from fs/eventpoll.c:33:
   In file included from arch/s390/include/asm/io.h:93:
   include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     585 |         __raw_writeb(value, PCI_IOBASE + addr);
         |                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     693 |         readsb(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     701 |         readsw(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     709 |         readsl(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     718 |         writesb(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     727 |         writesw(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     736 |         writesl(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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),                                           \
         |                           ^
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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)))
         |                                    ^
>> fs/eventpoll.c:805:39: error: no member named 'napi_id' in 'struct eventpoll'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                                          ~~  ^
   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))
         |                                                                         ^
>> fs/eventpoll.c:805:15: error: initializing 'unsigned int' with an expression of incompatible type 'void'
     805 |         unsigned int napi_id = READ_ONCE(ep->napi_id);
         |                      ^         ~~~~~~~~~~~~~~~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))                                       \
         |                       ^~~~~~~~~
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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),                                           \
         |                           ^
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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)))
         |                                    ^
>> fs/eventpoll.c:807:46: error: no member named 'prefer_busy_poll' in 'struct eventpoll'
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |                                                 ~~  ^
   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))
         |                                                                         ^
>> fs/eventpoll.c:807:29: error: invalid operands to binary expression ('int' and 'void')
     807 |         if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
         |             ~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> fs/eventpoll.c:808:3: error: call to undeclared function 'napi_resume_irqs'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     808 |                 napi_resume_irqs(napi_id);
         |                 ^
   13 warnings and 19 errors generated.


vim +805 fs/eventpoll.c

   802	
   803	static void ep_free(struct eventpoll *ep)
   804	{
 > 805		unsigned int napi_id = READ_ONCE(ep->napi_id);
   806	
 > 807		if (napi_id >= MIN_NAPI_ID && READ_ONCE(ep->prefer_busy_poll))
 > 808			napi_resume_irqs(napi_id);
   809		mutex_destroy(&ep->mtx);
   810		free_uid(ep->user);
   811		wakeup_source_unregister(ep->ws);
   812		kfree(ep);
   813	}
   814	

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           reply	other threads:[~2024-08-13  7:19 UTC|newest]

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