Hello, On Wed, Apr 01, 2015 at 04:31:43PM +0300, Stefan Strogin wrote: > Add trace events for cma_alloc() and cma_release(). > > The cma_alloc tracepoint is used both for successful and failed allocations, > in case of allocation failure pfn=-1UL is stored and printed. > > Signed-off-by: Stefan Strogin <stefan.strogin@xxxxxxxxx> > --- > > Took out from the patch set "mm: cma: add some debug information for CMA" v4 > (http://thread.gmane.org/gmane.linux.kernel.mm/129903) because of probable > uselessness of the rest of the patches. I think that patch 5/5 in previous submission is handy and simple to merge. Although we can calculate it by using bitmap, it would be good to get that information(used size and maxchunk size) directly. > @@ -414,6 +416,8 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align) > start = bitmap_no + mask + 1; > } > > + trace_cma_alloc(page ? pfn : -1UL, page, count); > + I think that tracing align is also useful. Is there any reason not to include it? Thanks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>