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7e27239d22
--symfs=<dir>,flat documents itself as matching only the base name, so a debuginfo lookup for /usr/lib/x86_64-linux-gnu/libc.so.6 should land on <dir>/libc.so.6.debug. It lands on <dir>/debug/usr/lib/x86_64-linux-gnu/libc.so.6.debug instead, because the layout is applied to a fixed prefix and the file name arrives afterwards: len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); snprintf(filename + len, size - len, "%s.debug", dso__long_name(dso)); perf_basename() only ever sees "/usr/lib/debug", so neither layout comes out of it. Compose the path as it would appear on the profiled system and join it once, which puts the layout on the whole name. That covers FEDORA_DEBUGINFO, UBUNTU_DEBUGINFO, MIXEDUP_UBUNTU_DEBUGINFO, OPENEMBEDDED_DEBUGINFO and BUILDID_DEBUGINFO, plus the same composition in build_id_cache__find_debug(). BUILDID_DEBUGINFO needs one more step: the build id cache splits the first two characters of the build id off into a directory name, so the basename of the hierarchy path is only part of the build id. Name the flat file after the whole build id. dso__disassemble_filename() passes a path from perf's own build id cache rather than one on the profiled system, and every entry there is named "elf" or "debug". Use path__join() so the layout does not apply. With --symfs /s,flat the lookups are now /s/libc.so.6, /s/libc.so.6.debug, /s/sleep and /s/<build id>.debug. hierarchy is unchanged. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Zhan Xusheng <zhanxusheng@xiaomi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| dma | ||
| docs | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
| platform/x86/amd | ||
| power | ||
| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| unittests | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||