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b7a2b011e9
Rather than have 2 Dwfl unify the Dwfl in skip-callchain-idx with that is used by libdw__addr2line(). Rename that variable in 'struct dso' from 'a2l_libdw' to just 'libdw' as it is now used in more than addr2line. The Dwfl in skip-callchain-idx uses a map address when being read with dwfl_report_elf (rather than dwfl_report_offline that addr2line uses). skip-callchain-idx is wrong as the map address can vary between processes because of ASLR, ie it should need a different Dwfl per process. In the code after this patch the base address becomes 0 and the mapped PC is used with the dwfl functions. This should increase the accuracy of skip-callchain-idx, but the impact has only been build tested. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Aditya Bodkhe <aditya.b1@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.ibm.com> Cc: Chun-Tse Shao <ctshao@google.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Dr. David Alan Gilbert <linux@treblig.org> Cc: Guo Ren <guoren@kernel.org> Cc: Haibo Xu <haibo1.xu@intel.com> Cc: Howard Chu <howardchu95@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Krzysztof Łopatowski <krzysztof.m.lopatowski@gmail.com> Cc: Leo Yan <leo.yan@linux.dev> Cc: Mark Wielaard <mark@klomp.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <pjw@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sergei Trofimovich <slyich@gmail.com> Cc: Shimin Guo <shimin.guo@skydio.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Thomas Falcon <thomas.falcon@intel.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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