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This is something that Fedora implemented (as "MiniDebuginfo" [1]). There are more details in v1. I've tested it with binaries that have .gnu_debugdata, and I've also ensured that the build & runtime work when LZMA is disabled. [1]: https://fedoraproject.org/wiki/Features/MiniDebugInfo Changes since v1: * Reuses the existing LZMA decompression helpers, rather than implementing a new LZMA decompression loop. This does involve creating a temporary file, but I think that actually makes things cleaner, since now the symsrc has a file descriptor to close, rather than adding a new pointer that needs freeing. * I did also remove the pr_debug() for the case where there is no ".gnu_debugdata" section. That's not really an error worth logging, that's just normal operation. * I added a pr_debug() for the case where we successfully load .gnu_debugdata so that it's easier to determine whether it gets used in tests. v1: https://lore.kernel.org/linux-perf-users/20250213190542.3249050-1-stephen.s.brennan@oracle.com/ Stephen Brennan (3): tools: perf: add dummy functions for !HAVE_LZMA_SUPPORT tools: perf: add LZMA decompression from FILE tools: perf: support .gnu_debugdata for symbols tools/perf/util/compress.h | 20 +++++++ tools/perf/util/dso.c | 2 + tools/perf/util/dso.h | 1 + tools/perf/util/lzma.c | 29 ++++++---- tools/perf/util/symbol-elf.c | 106 ++++++++++++++++++++++++++++++++++- tools/perf/util/symbol.c | 2 + 6 files changed, 147 insertions(+), 13 deletions(-) -- 2.43.5