Messages in this thread | | | Subject | Re: [PATCH 1/2] perf script: Show virtual addresses instead of offsets | From | Ravi Bangoria <> | Date | Fri, 18 May 2018 10:03:44 +0530 |
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Arnaldo,
We already have a binary offset handy in perf code but there is no way to dump it with perf script. We can derive it from symname+symoff but that's a manual work.
Will it be good to have a '-F binoff' option?
Ravi
On 05/18/2018 01:29 AM, Arnaldo Carvalho de Melo wrote: > Em Thu, May 17, 2018 at 12:03:25PM +0530, Sandipan Das escreveu: >> When perf data is recorded with the call-graph option enabled, >> the callchain shown by perf script shows the binary offsets of >> the symbols as the ip. This is incorrect for kernel symbols as >> the ip values are always off by a fixed offset depending on the >> architecture. If the offsets from the start of the symbols are >> printed, they are also incorrect for both kernel and userspace >> symbols. >> >> Without the call-graph option, the callchain shows the virtual >> addresses of the symbols rather than their binary offsets. The >> offsets printed in this case are also correct. >> >> This fixes the inconsistency in perf script's output. > > Thanks, tested and applied, > > - Arnaldo >
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