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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-18 22:20:52 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-19 13:42:34 +0200
commitf9188e023c248d73f5b4a589b480e065c1864068 (patch)
tree86efe8c89c318fdf9b9db8471680ba225ec8f4e2 /tools
parentb8e6d829729d1a5991a9f628205b671cac2ec06f (diff)
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perf_counter: Make callchain samples extensible
Before exposing upstream tools to a callchain-samples ABI, tidy it up to make it more extensible in the future: Use markers in the IP chain to denote context, use (u64)-1..-4095 range for these context markers because we use them for ERR_PTR(), so these addresses are unlikely to be mapped. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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