diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-08-19 09:56:42 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-13 11:01:26 -0500 |
| commit | fe49a1d17f81b755e4f81fdca5e0c1164bad0685 (patch) | |
| tree | 7c12c2c6bb63cd4b0bfc730e558dd306f1feb270 /mm | |
| parent | b69897676b28082e708180bd1035a23a13dea91f (diff) | |
mm: Replace cgroup_page bit spinlock
Bit spinlocks are not working on RT. Replace them.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_cgroup.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 1ccbd714059c..84f3ce8ab938 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -13,6 +13,14 @@ static unsigned long total_usage; +static void page_cgroup_lock_init(struct page_cgroup *pc, int nr_pages) +{ +#ifdef CONFIG_PREEMPT_RT_BASE + for (; nr_pages; nr_pages--, pc++) + spin_lock_init(&pc->pcg_lock); +#endif +} + #if !defined(CONFIG_SPARSEMEM) @@ -60,6 +68,7 @@ static int __init alloc_node_page_cgroup(int nid) return -ENOMEM; NODE_DATA(nid)->node_page_cgroup = base; total_usage += table_size; + page_cgroup_lock_init(base, nr_pages); return 0; } @@ -150,6 +159,8 @@ static int __meminit init_section_page_cgroup(unsigned long pfn, int nid) return -ENOMEM; } + page_cgroup_lock_init(base, PAGES_PER_SECTION); + /* * The passed "pfn" may not be aligned to SECTION. For the calculation * we need to apply a mask. |