imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-10-29 21:33:00 +01:00
Code Issues Packages Projects Releases Wiki Activity

debugobjects: Make them PREEMPT_RT aware

Browse Source 
On PREEMPT_RT enabled kernels it is not possible to refill the object pool
from atomic context (preemption or interrupts disabled) as the allocator
might acquire 'sleeping' spinlocks.

Guard the invocation of fill_pool() accordingly.

Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Sebastian Andrzej Siewior <[email protected]>
Link: https://lore.kernel.org/r/87sfzehdnl.ffs@tglx
This commit is contained in:
Thomas Gleixner committed 2021-08-13 10:07:44 +02:00
1 parent 36a21d5172
commit 4bedcc2846
1 file changed
+6 -1
Download Patch File Download Diff File Expand all files Collapse all files
lib/debugobjects.c
+6 -1
View File
@@ -557,7 +557,12 @@ __debug_object_init(void *addr, const struct debug_obj_descr *descr, int onstack
struct debug_obj *obj;
unsigned long flags;
fill_pool();
/*
* On RT enabled kernels the pool refill must happen in preemptible
* context:
*/
if (!IS_ENABLED(CONFIG_PREEMPT_RT) || preemptible())
fill_pool();
db = get_bucket((unsigned long) addr);