UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

powerpc/mm: Fix assert_pte_locked to work properly on uniprocessor 

Since the pte_lockptr is a spinlock it gets optimized away on
uniprocessor builds so using spin_is_locked is not correct.  We can use
assert_spin_locked instead and get the proper behavior between UP and
SMP builds.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2009-08-18 15:21:40 +00:00 committed by Benjamin Herrenschmidt
parent 433abcdf32
commit 797a747a82
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/mm/pgtable.c
View File

@ -254,7 +254,7 @@ void assert_pte_locked(struct mm_struct *mm, unsigned long addr)
BUG_ON(pud_none(*pud));
pmd = pmd_offset(pud, addr);
BUG_ON(!pmd_present(*pmd));
BUG_ON(!spin_is_locked(pte_lockptr(mm, pmd)));
assert_spin_locked(pte_lockptr(mm, pmd));
}
#endif /* CONFIG_DEBUG_VM */