Re: [PATCH net-next 3/5] net: napi: Make gro_flush_timeout per-NAPI

[kernel test robot <lkp@intel.com>]

Hi Joe,

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-napi-Make-napi_defer_hard_irqs-per-NAPI/20240829-211617
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240829131214.169977-4-jdamato%40fastly.com
patch subject: [PATCH net-next 3/5] net: napi: Make gro_flush_timeout per-NAPI
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20240831/202408310043.fmwHg8BS-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408310043.fmwHg8BS-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/202408310043.fmwHg8BS-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/minmax.h:5,
                    from include/linux/jiffies.h:8,
                    from include/net/pkt_sched.h:5,
                    from drivers/net/ethernet/intel/idpf/idpf.h:12,
                    from drivers/net/ethernet/intel/idpf/idpf_dev.c:4:
   include/linux/build_bug.h:78:41: error: static assertion failed: "offsetof(struct idpf_q_vector, __cacheline_group_end__read_write) - offsetofend(struct idpf_q_vector, __cacheline_group_begin__read_write) == (424 + 2 * sizeof(struct dim))"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/net/libeth/cache.h:17:9: note: in expansion of macro 'static_assert'
      17 |         static_assert(offsetof(type, __cacheline_group_end__##grp) -          \
         |         ^~~~~~~~~~~~~
   include/net/libeth/cache.h:62:9: note: in expansion of macro 'libeth_cacheline_group_assert'
      62 |         libeth_cacheline_group_assert(type, read_write, rw);                  \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/idpf/idpf_txrx.h:475:1: note: in expansion of macro 'libeth_cacheline_set_assert'
     475 | libeth_cacheline_set_assert(struct idpf_q_vector, 104,
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct idpf_q_vector) == ((((((104)) + ((__typeof__((104)))(((1 << 6))) - 1)) & ~((__typeof__((104)))(((1 << 6))) - 1)) + ((((424 + 2 * sizeof(struct dim))) + ((__typeof__((424 + 2 * sizeof(struct dim))))(((1 << 6))) - 1)) & ~((__typeof__((424 + 2 * sizeof(struct dim))))(((1 << 6))) - 1)) + ((((8 + sizeof(cpumask_var_t))) + ((__typeof__((8 + sizeof(cpumask_var_t))))(((1 << 6))) - 1)) & ~((__typeof__((8 + sizeof(cpumask_var_t))))(((1 << 6))) - 1))))"
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                         ^~~~~~~~~~~~~~
   include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
      77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
         |                                  ^~~~~~~~~~~~~~~
   include/net/libeth/cache.h:21:9: note: in expansion of macro 'static_assert'
      21 |         static_assert(sizeof(type) == (sz))
         |         ^~~~~~~~~~~~~
   include/net/libeth/cache.h:48:9: note: in expansion of macro '__libeth_cacheline_struct_assert'
      48 |         __libeth_cacheline_struct_assert(type, __libeth_cls(__VA_ARGS__));    \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/net/libeth/cache.h:64:9: note: in expansion of macro 'libeth_cacheline_struct_assert'
      64 |         libeth_cacheline_struct_assert(type, ro, rw, c)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/idpf/idpf_txrx.h:475:1: note: in expansion of macro 'libeth_cacheline_set_assert'
     475 | libeth_cacheline_set_assert(struct idpf_q_vector, 104,
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +78 include/linux/build_bug.h

bc6245e5efd70c Ian Abbott       2017-07-10  60  
6bab69c65013be Rasmus Villemoes 2019-03-07  61  /**
6bab69c65013be Rasmus Villemoes 2019-03-07  62   * static_assert - check integer constant expression at build time
6bab69c65013be Rasmus Villemoes 2019-03-07  63   *
6bab69c65013be Rasmus Villemoes 2019-03-07  64   * static_assert() is a wrapper for the C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07  65   * little macro magic to make the message optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07  66   * stringification of the tested expression).
6bab69c65013be Rasmus Villemoes 2019-03-07  67   *
6bab69c65013be Rasmus Villemoes 2019-03-07  68   * Contrary to BUILD_BUG_ON(), static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07  69   * scope, but requires the expression to be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07  70   * expression (i.e., it is not enough that __builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07  71   * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07  72   *
6bab69c65013be Rasmus Villemoes 2019-03-07  73   * Also note that BUILD_BUG_ON() fails the build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07  74   * true, while static_assert() fails the build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07  75   * false.
6bab69c65013be Rasmus Villemoes 2019-03-07  76   */
6bab69c65013be Rasmus Villemoes 2019-03-07  77  #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @78  #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07  79  
07a368b3f55a79 Maxim Levitsky   2022-10-25  80  

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