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9fdd8a875c
The struct page is opaque for userspace tools, so it'd be better to save pfn in order to identify page frames. The textual output of $debugfs/tracing/trace file remains unchanged and only raw (binary) data format is changed - but thanks to libtraceevent, userspace tools which deal with the raw data (like perf and trace-cmd) can parse the format easily. So impact on the userspace will also be minimal. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Based-on-patch-by: Joonsoo Kim <js1304@gmail.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1428298576-9785-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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