tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next head: ccc0666e2049e5818c236e647cf20c552a7b053b commit: ccc0666e2049e5818c236e647cf20c552a7b053b [34/34] rcu: Allow boot-time use of cond_resched_rcu_qs() config: i386-randconfig-x008-201648 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout ccc0666e2049e5818c236e647cf20c552a7b053b # save the attached .config to linux build tree make ARCH=i386
All error/warnings (new ones prefixed by >>):
In file included from include/linux/srcu.h:33:0,
from include/linux/notifier.h:15,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:777,
from include/linux/gfp.h:5,
from include/linux/mm.h:9,
from mm/page_alloc.c:18:
mm/page_alloc.c: In function '__alloc_pages_nodemask':
>> include/linux/rcupdate.h:426:6: error: 'rcu_scheduler_active' undeclared
>> (first use in this function)
if (rcu_scheduler_active && !cond_resched()) \
^
>> mm/page_alloc.c:3746:2: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:426:6: note: each undeclared identifier is reported
only once for each function it appears in
if (rcu_scheduler_active && !cond_resched()) \
^
>> mm/page_alloc.c:3746:2: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/srcu.h:33:0,
from include/linux/notifier.h:15,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:777,
from include/linux/gfp.h:5,
from include/linux/mm.h:9,
from mm/vmscan.c:16:
mm/vmscan.c: In function 'shrink_node_memcg':
>> include/linux/rcupdate.h:426:6: error: 'rcu_scheduler_active' undeclared
>> (first use in this function)
if (rcu_scheduler_active && !cond_resched()) \
^
>> mm/vmscan.c:2355:4: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:426:6: note: each undeclared identifier is reported
only once for each function it appears in
if (rcu_scheduler_active && !cond_resched()) \
^
>> mm/vmscan.c:2355:4: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
mm/vmscan.c: In function 'shrink_node':
>> include/linux/rcupdate.h:426:6: error: 'rcu_scheduler_active' undeclared
>> (first use in this function)
if (rcu_scheduler_active && !cond_resched()) \
^
mm/vmscan.c:2535:6: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/srcu.h:33:0,
from include/linux/notifier.h:15,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:777,
from include/linux/gfp.h:5,
from include/linux/mm.h:9,
from include/linux/mman.h:4,
from mm/mlock.c:9:
mm/mlock.c: In function 'apply_mlockall_flags':
>> include/linux/rcupdate.h:426:6: error: 'rcu_scheduler_active' undeclared
>> (first use in this function)
if (rcu_scheduler_active && !cond_resched()) \
^
mm/mlock.c:782:3: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:426:6: note: each undeclared identifier is reported
only once for each function it appears in
if (rcu_scheduler_active && !cond_resched()) \
^
mm/mlock.c:782:3: note: in expansion of macro 'cond_resched_rcu_qs'
cond_resched_rcu_qs();
^~~~~~~~~~~~~~~~~~~
vim +/rcu_scheduler_active +426 include/linux/rcupdate.h
420 * This macro resembles cond_resched(), except that it is defined to
421 * report potential quiescent states to RCU-tasks even if the
cond_resched()
422 * machinery were to be shut off, as some advocate for PREEMPT kernels.
423 */
424 #define cond_resched_rcu_qs() \
425 do { \
> 426 if (rcu_scheduler_active && !cond_resched()) \
427 rcu_note_voluntary_context_switch(current); \
428 } while (0)
429
---
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