[PATCH v2 1/5] printk/nmi: Generic solution for safe printk in NMI
kbuild test robot
lkp at intel.com
Fri Nov 27 04:02:33 PST 2015
Hi Petr,
[auto build test ERROR on: powerpc/next]
[also build test ERROR on: v4.4-rc2 next-20151127]
[cannot apply to: tip/x86/core]
url: https://github.com/0day-ci/linux/commits/Petr-Mladek/Cleaning-printk-stuff-in-NMI-context/20151127-191620
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: i386-randconfig-s1-201547 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All error/warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/percpu.h:551:0,
from arch/x86/include/asm/current.h:5,
from arch/x86/include/asm/processor.h:15,
from arch/x86/include/asm/atomic.h:6,
from include/linux/atomic.h:4,
from include/linux/llist.h:58,
from include/linux/smp.h:14,
from kernel/printk/nmi.c:18:
kernel/printk/printk.h: In function 'vprintk_func':
>> include/asm-generic/percpu.h:111:2: error: implicit declaration of function 'preempt_disable' [-Werror=implicit-function-declaration]
preempt_disable(); \
^
>> include/asm-generic/percpu.h:305:31: note: in expansion of macro 'this_cpu_generic_read'
#define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
^
>> include/linux/percpu-defs.h:311:23: note: in expansion of macro 'this_cpu_read_8'
case 8: pscr_ret__ = stem##8(variable); break; \
^
>> include/linux/percpu-defs.h:494:29: note: in expansion of macro '__pcpu_size_call_return'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
>> kernel/printk/printk.h:34:9: note: in expansion of macro 'this_cpu_read'
return this_cpu_read(printk_func)(fmt, args);
^
>> include/asm-generic/percpu.h:113:2: error: implicit declaration of function 'preempt_enable' [-Werror=implicit-function-declaration]
preempt_enable(); \
^
>> include/asm-generic/percpu.h:305:31: note: in expansion of macro 'this_cpu_generic_read'
#define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
^
>> include/linux/percpu-defs.h:311:23: note: in expansion of macro 'this_cpu_read_8'
case 8: pscr_ret__ = stem##8(variable); break; \
^
>> include/linux/percpu-defs.h:494:29: note: in expansion of macro '__pcpu_size_call_return'
#define this_cpu_read(pcp) __pcpu_size_call_return(this_cpu_read_, pcp)
^
>> kernel/printk/printk.h:34:9: note: in expansion of macro 'this_cpu_read'
return this_cpu_read(printk_func)(fmt, args);
^
kernel/printk/nmi.c: In function '__printk_nmi_flush':
>> kernel/printk/nmi.c:106:9: error: unknown type name 'raw_spinlock_t'
static raw_spinlock_t read_lock =
^
>> kernel/printk/nmi.c:107:3: error: implicit declaration of function '__RAW_SPIN_LOCK_INITIALIZER' [-Werror=implicit-function-declaration]
__RAW_SPIN_LOCK_INITIALIZER(read_lock);
^
>> kernel/printk/nmi.c:107:3: error: initializer element is not constant
>> kernel/printk/nmi.c:118:2: error: implicit declaration of function 'raw_spin_lock' [-Werror=implicit-function-declaration]
raw_spin_lock(&read_lock);
^
>> kernel/printk/nmi.c:163:2: error: implicit declaration of function 'raw_spin_unlock' [-Werror=implicit-function-declaration]
raw_spin_unlock(&read_lock);
^
cc1: some warnings being treated as errors
vim +/preempt_disable +111 include/asm-generic/percpu.h
9c28278a24 Tejun Heo 2014-06-17 105 (__ret); \
9c28278a24 Tejun Heo 2014-06-17 106 })
9c28278a24 Tejun Heo 2014-06-17 107
eba117889a Tejun Heo 2014-06-17 108 #define this_cpu_generic_read(pcp) \
eba117889a Tejun Heo 2014-06-17 109 ({ \
eba117889a Tejun Heo 2014-06-17 110 typeof(pcp) __ret; \
9c28278a24 Tejun Heo 2014-06-17 @111 preempt_disable(); \
eba117889a Tejun Heo 2014-06-17 112 __ret = *this_cpu_ptr(&(pcp)); \
9c28278a24 Tejun Heo 2014-06-17 @113 preempt_enable(); \
eba117889a Tejun Heo 2014-06-17 114 __ret; \
9c28278a24 Tejun Heo 2014-06-17 115 })
9c28278a24 Tejun Heo 2014-06-17 116
eba117889a Tejun Heo 2014-06-17 117 #define this_cpu_generic_to_op(pcp, val, op) \
9c28278a24 Tejun Heo 2014-06-17 118 do { \
eba117889a Tejun Heo 2014-06-17 119 unsigned long __flags; \
eba117889a Tejun Heo 2014-06-17 120 raw_local_irq_save(__flags); \
9c28278a24 Tejun Heo 2014-06-17 121 *raw_cpu_ptr(&(pcp)) op val; \
eba117889a Tejun Heo 2014-06-17 122 raw_local_irq_restore(__flags); \
9c28278a24 Tejun Heo 2014-06-17 123 } while (0)
9c28278a24 Tejun Heo 2014-06-17 124
eba117889a Tejun Heo 2014-06-17 125 #define this_cpu_generic_add_return(pcp, val) \
9c28278a24 Tejun Heo 2014-06-17 126 ({ \
eba117889a Tejun Heo 2014-06-17 127 typeof(pcp) __ret; \
eba117889a Tejun Heo 2014-06-17 128 unsigned long __flags; \
eba117889a Tejun Heo 2014-06-17 129 raw_local_irq_save(__flags); \
9c28278a24 Tejun Heo 2014-06-17 130 raw_cpu_add(pcp, val); \
eba117889a Tejun Heo 2014-06-17 131 __ret = raw_cpu_read(pcp); \
eba117889a Tejun Heo 2014-06-17 132 raw_local_irq_restore(__flags); \
eba117889a Tejun Heo 2014-06-17 133 __ret; \
9c28278a24 Tejun Heo 2014-06-17 134 })
9c28278a24 Tejun Heo 2014-06-17 135
eba117889a Tejun Heo 2014-06-17 136 #define this_cpu_generic_xchg(pcp, nval) \
eba117889a Tejun Heo 2014-06-17 137 ({ \
eba117889a Tejun Heo 2014-06-17 138 typeof(pcp) __ret; \
eba117889a Tejun Heo 2014-06-17 139 unsigned long __flags; \
eba117889a Tejun Heo 2014-06-17 140 raw_local_irq_save(__flags); \
eba117889a Tejun Heo 2014-06-17 141 __ret = raw_cpu_read(pcp); \
9c28278a24 Tejun Heo 2014-06-17 142 raw_cpu_write(pcp, nval); \
eba117889a Tejun Heo 2014-06-17 143 raw_local_irq_restore(__flags); \
eba117889a Tejun Heo 2014-06-17 144 __ret; \
9c28278a24 Tejun Heo 2014-06-17 145 })
9c28278a24 Tejun Heo 2014-06-17 146
eba117889a Tejun Heo 2014-06-17 147 #define this_cpu_generic_cmpxchg(pcp, oval, nval) \
9c28278a24 Tejun Heo 2014-06-17 148 ({ \
eba117889a Tejun Heo 2014-06-17 149 typeof(pcp) __ret; \
eba117889a Tejun Heo 2014-06-17 150 unsigned long __flags; \
eba117889a Tejun Heo 2014-06-17 151 raw_local_irq_save(__flags); \
eba117889a Tejun Heo 2014-06-17 152 __ret = raw_cpu_read(pcp); \
eba117889a Tejun Heo 2014-06-17 153 if (__ret == (oval)) \
9c28278a24 Tejun Heo 2014-06-17 154 raw_cpu_write(pcp, nval); \
eba117889a Tejun Heo 2014-06-17 155 raw_local_irq_restore(__flags); \
eba117889a Tejun Heo 2014-06-17 156 __ret; \
9c28278a24 Tejun Heo 2014-06-17 157 })
9c28278a24 Tejun Heo 2014-06-17 158
eba117889a Tejun Heo 2014-06-17 159 #define this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
9c28278a24 Tejun Heo 2014-06-17 160 ({ \
eba117889a Tejun Heo 2014-06-17 161 int __ret; \
eba117889a Tejun Heo 2014-06-17 162 unsigned long __flags; \
eba117889a Tejun Heo 2014-06-17 163 raw_local_irq_save(__flags); \
eba117889a Tejun Heo 2014-06-17 164 __ret = raw_cpu_generic_cmpxchg_double(pcp1, pcp2, \
9c28278a24 Tejun Heo 2014-06-17 165 oval1, oval2, nval1, nval2); \
eba117889a Tejun Heo 2014-06-17 166 raw_local_irq_restore(__flags); \
eba117889a Tejun Heo 2014-06-17 167 __ret; \
9c28278a24 Tejun Heo 2014-06-17 168 })
9c28278a24 Tejun Heo 2014-06-17 169
47b69ad673 Tejun Heo 2014-06-17 170 #ifndef raw_cpu_read_1
47b69ad673 Tejun Heo 2014-06-17 171 #define raw_cpu_read_1(pcp) (*raw_cpu_ptr(&(pcp)))
47b69ad673 Tejun Heo 2014-06-17 172 #endif
47b69ad673 Tejun Heo 2014-06-17 173 #ifndef raw_cpu_read_2
47b69ad673 Tejun Heo 2014-06-17 174 #define raw_cpu_read_2(pcp) (*raw_cpu_ptr(&(pcp)))
47b69ad673 Tejun Heo 2014-06-17 175 #endif
47b69ad673 Tejun Heo 2014-06-17 176 #ifndef raw_cpu_read_4
47b69ad673 Tejun Heo 2014-06-17 177 #define raw_cpu_read_4(pcp) (*raw_cpu_ptr(&(pcp)))
47b69ad673 Tejun Heo 2014-06-17 178 #endif
47b69ad673 Tejun Heo 2014-06-17 179 #ifndef raw_cpu_read_8
47b69ad673 Tejun Heo 2014-06-17 180 #define raw_cpu_read_8(pcp) (*raw_cpu_ptr(&(pcp)))
47b69ad673 Tejun Heo 2014-06-17 181 #endif
47b69ad673 Tejun Heo 2014-06-17 182
47b69ad673 Tejun Heo 2014-06-17 183 #ifndef raw_cpu_write_1
eba117889a Tejun Heo 2014-06-17 184 #define raw_cpu_write_1(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
47b69ad673 Tejun Heo 2014-06-17 185 #endif
47b69ad673 Tejun Heo 2014-06-17 186 #ifndef raw_cpu_write_2
eba117889a Tejun Heo 2014-06-17 187 #define raw_cpu_write_2(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
47b69ad673 Tejun Heo 2014-06-17 188 #endif
47b69ad673 Tejun Heo 2014-06-17 189 #ifndef raw_cpu_write_4
eba117889a Tejun Heo 2014-06-17 190 #define raw_cpu_write_4(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
47b69ad673 Tejun Heo 2014-06-17 191 #endif
47b69ad673 Tejun Heo 2014-06-17 192 #ifndef raw_cpu_write_8
eba117889a Tejun Heo 2014-06-17 193 #define raw_cpu_write_8(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
47b69ad673 Tejun Heo 2014-06-17 194 #endif
47b69ad673 Tejun Heo 2014-06-17 195
47b69ad673 Tejun Heo 2014-06-17 196 #ifndef raw_cpu_add_1
eba117889a Tejun Heo 2014-06-17 197 #define raw_cpu_add_1(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
47b69ad673 Tejun Heo 2014-06-17 198 #endif
47b69ad673 Tejun Heo 2014-06-17 199 #ifndef raw_cpu_add_2
eba117889a Tejun Heo 2014-06-17 200 #define raw_cpu_add_2(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
47b69ad673 Tejun Heo 2014-06-17 201 #endif
47b69ad673 Tejun Heo 2014-06-17 202 #ifndef raw_cpu_add_4
eba117889a Tejun Heo 2014-06-17 203 #define raw_cpu_add_4(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
47b69ad673 Tejun Heo 2014-06-17 204 #endif
47b69ad673 Tejun Heo 2014-06-17 205 #ifndef raw_cpu_add_8
eba117889a Tejun Heo 2014-06-17 206 #define raw_cpu_add_8(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
47b69ad673 Tejun Heo 2014-06-17 207 #endif
47b69ad673 Tejun Heo 2014-06-17 208
47b69ad673 Tejun Heo 2014-06-17 209 #ifndef raw_cpu_and_1
eba117889a Tejun Heo 2014-06-17 210 #define raw_cpu_and_1(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
47b69ad673 Tejun Heo 2014-06-17 211 #endif
47b69ad673 Tejun Heo 2014-06-17 212 #ifndef raw_cpu_and_2
eba117889a Tejun Heo 2014-06-17 213 #define raw_cpu_and_2(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
47b69ad673 Tejun Heo 2014-06-17 214 #endif
47b69ad673 Tejun Heo 2014-06-17 215 #ifndef raw_cpu_and_4
eba117889a Tejun Heo 2014-06-17 216 #define raw_cpu_and_4(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
47b69ad673 Tejun Heo 2014-06-17 217 #endif
47b69ad673 Tejun Heo 2014-06-17 218 #ifndef raw_cpu_and_8
eba117889a Tejun Heo 2014-06-17 219 #define raw_cpu_and_8(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
47b69ad673 Tejun Heo 2014-06-17 220 #endif
47b69ad673 Tejun Heo 2014-06-17 221
47b69ad673 Tejun Heo 2014-06-17 222 #ifndef raw_cpu_or_1
eba117889a Tejun Heo 2014-06-17 223 #define raw_cpu_or_1(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
47b69ad673 Tejun Heo 2014-06-17 224 #endif
47b69ad673 Tejun Heo 2014-06-17 225 #ifndef raw_cpu_or_2
eba117889a Tejun Heo 2014-06-17 226 #define raw_cpu_or_2(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
47b69ad673 Tejun Heo 2014-06-17 227 #endif
47b69ad673 Tejun Heo 2014-06-17 228 #ifndef raw_cpu_or_4
eba117889a Tejun Heo 2014-06-17 229 #define raw_cpu_or_4(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
47b69ad673 Tejun Heo 2014-06-17 230 #endif
47b69ad673 Tejun Heo 2014-06-17 231 #ifndef raw_cpu_or_8
eba117889a Tejun Heo 2014-06-17 232 #define raw_cpu_or_8(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
47b69ad673 Tejun Heo 2014-06-17 233 #endif
47b69ad673 Tejun Heo 2014-06-17 234
47b69ad673 Tejun Heo 2014-06-17 235 #ifndef raw_cpu_add_return_1
47b69ad673 Tejun Heo 2014-06-17 236 #define raw_cpu_add_return_1(pcp, val) raw_cpu_generic_add_return(pcp, val)
47b69ad673 Tejun Heo 2014-06-17 237 #endif
47b69ad673 Tejun Heo 2014-06-17 238 #ifndef raw_cpu_add_return_2
47b69ad673 Tejun Heo 2014-06-17 239 #define raw_cpu_add_return_2(pcp, val) raw_cpu_generic_add_return(pcp, val)
47b69ad673 Tejun Heo 2014-06-17 240 #endif
47b69ad673 Tejun Heo 2014-06-17 241 #ifndef raw_cpu_add_return_4
47b69ad673 Tejun Heo 2014-06-17 242 #define raw_cpu_add_return_4(pcp, val) raw_cpu_generic_add_return(pcp, val)
47b69ad673 Tejun Heo 2014-06-17 243 #endif
47b69ad673 Tejun Heo 2014-06-17 244 #ifndef raw_cpu_add_return_8
47b69ad673 Tejun Heo 2014-06-17 245 #define raw_cpu_add_return_8(pcp, val) raw_cpu_generic_add_return(pcp, val)
47b69ad673 Tejun Heo 2014-06-17 246 #endif
47b69ad673 Tejun Heo 2014-06-17 247
47b69ad673 Tejun Heo 2014-06-17 248 #ifndef raw_cpu_xchg_1
47b69ad673 Tejun Heo 2014-06-17 249 #define raw_cpu_xchg_1(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
47b69ad673 Tejun Heo 2014-06-17 250 #endif
47b69ad673 Tejun Heo 2014-06-17 251 #ifndef raw_cpu_xchg_2
47b69ad673 Tejun Heo 2014-06-17 252 #define raw_cpu_xchg_2(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
47b69ad673 Tejun Heo 2014-06-17 253 #endif
47b69ad673 Tejun Heo 2014-06-17 254 #ifndef raw_cpu_xchg_4
47b69ad673 Tejun Heo 2014-06-17 255 #define raw_cpu_xchg_4(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
47b69ad673 Tejun Heo 2014-06-17 256 #endif
47b69ad673 Tejun Heo 2014-06-17 257 #ifndef raw_cpu_xchg_8
47b69ad673 Tejun Heo 2014-06-17 258 #define raw_cpu_xchg_8(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
47b69ad673 Tejun Heo 2014-06-17 259 #endif
47b69ad673 Tejun Heo 2014-06-17 260
47b69ad673 Tejun Heo 2014-06-17 261 #ifndef raw_cpu_cmpxchg_1
eba117889a Tejun Heo 2014-06-17 262 #define raw_cpu_cmpxchg_1(pcp, oval, nval) \
eba117889a Tejun Heo 2014-06-17 263 raw_cpu_generic_cmpxchg(pcp, oval, nval)
47b69ad673 Tejun Heo 2014-06-17 264 #endif
47b69ad673 Tejun Heo 2014-06-17 265 #ifndef raw_cpu_cmpxchg_2
eba117889a Tejun Heo 2014-06-17 266 #define raw_cpu_cmpxchg_2(pcp, oval, nval) \
eba117889a Tejun Heo 2014-06-17 267 raw_cpu_generic_cmpxchg(pcp, oval, nval)
47b69ad673 Tejun Heo 2014-06-17 268 #endif
47b69ad673 Tejun Heo 2014-06-17 269 #ifndef raw_cpu_cmpxchg_4
eba117889a Tejun Heo 2014-06-17 270 #define raw_cpu_cmpxchg_4(pcp, oval, nval) \
eba117889a Tejun Heo 2014-06-17 271 raw_cpu_generic_cmpxchg(pcp, oval, nval)
47b69ad673 Tejun Heo 2014-06-17 272 #endif
47b69ad673 Tejun Heo 2014-06-17 273 #ifndef raw_cpu_cmpxchg_8
eba117889a Tejun Heo 2014-06-17 274 #define raw_cpu_cmpxchg_8(pcp, oval, nval) \
eba117889a Tejun Heo 2014-06-17 275 raw_cpu_generic_cmpxchg(pcp, oval, nval)
47b69ad673 Tejun Heo 2014-06-17 276 #endif
47b69ad673 Tejun Heo 2014-06-17 277
47b69ad673 Tejun Heo 2014-06-17 278 #ifndef raw_cpu_cmpxchg_double_1
47b69ad673 Tejun Heo 2014-06-17 279 #define raw_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \
47b69ad673 Tejun Heo 2014-06-17 280 raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
47b69ad673 Tejun Heo 2014-06-17 281 #endif
47b69ad673 Tejun Heo 2014-06-17 282 #ifndef raw_cpu_cmpxchg_double_2
47b69ad673 Tejun Heo 2014-06-17 283 #define raw_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \
47b69ad673 Tejun Heo 2014-06-17 284 raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
47b69ad673 Tejun Heo 2014-06-17 285 #endif
47b69ad673 Tejun Heo 2014-06-17 286 #ifndef raw_cpu_cmpxchg_double_4
47b69ad673 Tejun Heo 2014-06-17 287 #define raw_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \
47b69ad673 Tejun Heo 2014-06-17 288 raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
47b69ad673 Tejun Heo 2014-06-17 289 #endif
47b69ad673 Tejun Heo 2014-06-17 290 #ifndef raw_cpu_cmpxchg_double_8
47b69ad673 Tejun Heo 2014-06-17 291 #define raw_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \
47b69ad673 Tejun Heo 2014-06-17 292 raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
47b69ad673 Tejun Heo 2014-06-17 293 #endif
47b69ad673 Tejun Heo 2014-06-17 294
47b69ad673 Tejun Heo 2014-06-17 295 #ifndef this_cpu_read_1
eba117889a Tejun Heo 2014-06-17 296 #define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
47b69ad673 Tejun Heo 2014-06-17 297 #endif
47b69ad673 Tejun Heo 2014-06-17 298 #ifndef this_cpu_read_2
eba117889a Tejun Heo 2014-06-17 299 #define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
47b69ad673 Tejun Heo 2014-06-17 300 #endif
47b69ad673 Tejun Heo 2014-06-17 301 #ifndef this_cpu_read_4
eba117889a Tejun Heo 2014-06-17 302 #define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
47b69ad673 Tejun Heo 2014-06-17 303 #endif
47b69ad673 Tejun Heo 2014-06-17 304 #ifndef this_cpu_read_8
eba117889a Tejun Heo 2014-06-17 @305 #define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
47b69ad673 Tejun Heo 2014-06-17 306 #endif
47b69ad673 Tejun Heo 2014-06-17 307
47b69ad673 Tejun Heo 2014-06-17 308 #ifndef this_cpu_write_1
:::::: The code at line 111 was first introduced by commit
:::::: 9c28278a24c01c0073fb89e53c1d2a605ab9587d percpu: reorder macros in percpu header files
:::::: TO: Tejun Heo <tj at kernel.org>
:::::: CC: Tejun Heo <tj at kernel.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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