On 05/30/2012 04:17 PM, Frederic Weisbecker wrote:
On Fri, May 25, 2012 at 05:03:36PM +0400, Glauber Costa wrote:#endif /* CONFIG_CGROUP_MEM_RES_CTLR_KMEM */ +static __always_inline struct kmem_cache * +mem_cgroup_get_kmem_cache(struct kmem_cache *cachep, gfp_t gfp) +{ + if (!mem_cgroup_kmem_on) + return cachep; + if (!current->mm) + return cachep; + if (in_interrupt()) + return cachep;Does that mean interrupts are kept out of accounting?
Well, since interrupts have no process context, if you are in an interrupt I can't think of any sane thing to do than relay it to the root memcg. That's what happen when I return cachep: I return the original parent cache, and we allocate from that.
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