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Message-ID: <202408311318.wcMCNEWH-lkp@intel.com>
Date: Sat, 31 Aug 2024 13:51:05 +0800
From: kernel test robot <lkp@...el.com>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [paulmck-rcu:dev.2024.08.30a 27/33] include/linux/srcu.h:246:37:
error: 'SRCU_READ_FLAVOR_NORMAL' undeclared
tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2024.08.30a
head: 05416eb79213ad6a9770faa795059fdd00adb6e0
commit: d4401cc54f3e2985675be825f5222aff9764ab8b [27/33] srcu: Convert srcu_data ->srcu_reader_flavor to bit field
config: m68k-randconfig-r072-20240831 (https://download.01.org/0day-ci/archive/20240831/202408311318.wcMCNEWH-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408311318.wcMCNEWH-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/202408311318.wcMCNEWH-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/notifier.h:16,
from include/linux/memory_hotplug.h:7,
from include/linux/mmzone.h:1432,
from include/linux/topology.h:33,
from include/linux/irq.h:19,
from include/asm-generic/hardirq.h:17,
from ./arch/m68k/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:11,
from include/linux/interrupt.h:11,
from include/linux/kernel_stat.h:8,
from arch/m68k/kernel/asm-offsets.c:16:
include/linux/srcu.h: In function 'srcu_read_lock':
>> include/linux/srcu.h:246:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
246 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h:246:37: note: each undeclared identifier is reported only once for each function it appears in
include/linux/srcu.h: In function 'srcu_read_lock_nmisafe':
>> include/linux/srcu.h:267:37: error: 'SRCU_READ_FLAVOR_NMI' undeclared (first use in this function)
267 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NMI);
| ^~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_read_lock_notrace':
include/linux/srcu.h:279:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
279 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_down_read':
include/linux/srcu.h:308:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
308 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_read_unlock':
include/linux/srcu.h:323:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
323 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_read_unlock_nmisafe':
include/linux/srcu.h:339:37: error: 'SRCU_READ_FLAVOR_NMI' undeclared (first use in this function)
339 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NMI);
| ^~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_read_unlock_notrace':
include/linux/srcu.h:348:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
348 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/srcu.h: In function 'srcu_up_read':
include/linux/srcu.h:365:37: error: 'SRCU_READ_FLAVOR_NORMAL' undeclared (first use in this function)
365 | srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
| ^~~~~~~~~~~~~~~~~~~~~~~
make[3]: *** [scripts/Makefile.build:117: arch/m68k/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1193: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:224: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/SRCU_READ_FLAVOR_NORMAL +246 include/linux/srcu.h
221
222 /**
223 * srcu_read_lock - register a new reader for an SRCU-protected structure.
224 * @ssp: srcu_struct in which to register the new reader.
225 *
226 * Enter an SRCU read-side critical section. Note that SRCU read-side
227 * critical sections may be nested. However, it is illegal to
228 * call anything that waits on an SRCU grace period for the same
229 * srcu_struct, whether directly or indirectly. Please note that
230 * one way to indirectly wait on an SRCU grace period is to acquire
231 * a mutex that is held elsewhere while calling synchronize_srcu() or
232 * synchronize_srcu_expedited().
233 *
234 * The return value from srcu_read_lock() must be passed unaltered
235 * to the matching srcu_read_unlock(). Note that srcu_read_lock() and
236 * the matching srcu_read_unlock() must occur in the same context, for
237 * example, it is illegal to invoke srcu_read_unlock() in an irq handler
238 * if the matching srcu_read_lock() was invoked in process context. Or,
239 * for that matter to invoke srcu_read_unlock() from one task and the
240 * matching srcu_read_lock() from another.
241 */
242 static inline int srcu_read_lock(struct srcu_struct *ssp) __acquires(ssp)
243 {
244 int retval;
245
> 246 srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NORMAL);
247 retval = __srcu_read_lock(ssp);
248 srcu_lock_acquire(&ssp->dep_map);
249 return retval;
250 }
251
252 /**
253 * srcu_read_lock_nmisafe - register a new reader for an SRCU-protected structure.
254 * @ssp: srcu_struct in which to register the new reader.
255 *
256 * Enter an SRCU read-side critical section, but in an NMI-safe manner.
257 * See srcu_read_lock() for more information.
258 *
259 * If srcu_read_lock_nmisafe() is ever used on an srcu_struct structure,
260 * then none of the other flavors may be used, whether before, during,
261 * or after.
262 */
263 static inline int srcu_read_lock_nmisafe(struct srcu_struct *ssp) __acquires(ssp)
264 {
265 int retval;
266
> 267 srcu_check_read_flavor(ssp, SRCU_READ_FLAVOR_NMI);
268 retval = __srcu_read_lock_nmisafe(ssp);
269 rcu_try_lock_acquire(&ssp->dep_map);
270 return retval;
271 }
272
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