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perf probe: Use dwarf_getcfi_elf() instead of dwarf_getcfi()

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The dwarf_getcfi() only checks .debug_frame section for CFI, but as
most binaries only have .eh_frame it'd return NULL and it makes
some variables inaccessible.

Using dwarf_getcfi_elf (along with dwarf_getelf()) allows to show and
add probe to more variables.

Signed-off-by: Namhyung Kim <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jiri Olsa <[email protected]>
This commit is contained in:
Namhyung Kim 2014-04-07 16:05:48 +09:00 • committed by Jiri Olsa
commit 03d8941298
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/probe-finder.c
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@ -985,7 +985,7 @@ static int debuginfo__find_probes(struct debuginfo *dbg,
#if _ELFUTILS_PREREQ(0, 142)
/* Get the call frame information from this dwarf */
pf->cfi = dwarf_getcfi(dbg->dbg);
pf->cfi = dwarf_getcfi_elf(dwarf_getelf(dbg->dbg));
#endif
off = 0;