On Thu, 17 Feb 2005, Parag Warudkar wrote: > > A question - is it safe to assume it is a kmalloc based leak? (I am thinking > of tracking it down by using kprobes to insert a probe into __kmalloc and > record the stack to see what is causing so many allocations.)
It's definitely kmalloc-based, but you may not catch it in __kmalloc. The "kmalloc()" function is actually an inline function which has some magic compile-time code that statically determines when the size is constant and can be turned into a direct call to "kmem_cache_alloc()" with the proper cache descriptor. So you'd need to either instrument kmem_cache_alloc() (and trigger on the proper slab descriptor) or you would need to modify the kmalloc() definition in <linux/slab.h> to not do the constant size optimization, at which point you can instrument just __kmalloc() and avoid some of the overhead. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/