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authorSandipan Das <sandipan@linux.ibm.com>2018-08-28 14:38:48 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-10 08:53:20 +0200
commitbce26ed05498f2ddae6c7ae3df6eb7c436b96744 (patch)
tree38a083dfff742906a7050f52875978aeaa3c4fab /tools
parent6040d231deea7825c89f294cc6ef61bc7ff29875 (diff)
perf probe powerpc: Ignore SyS symbols irrespective of endianness
[ Upstream commit fa694160cca6dbba17c57dc7efec5f93feaf8795 ] This makes sure that the SyS symbols are ignored for any powerpc system, not just the big endian ones. Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Fixes: fb6d59423115 ("perf probe ppc: Use the right prefix when ignoring SyS symbols on ppc") Link: http://lkml.kernel.org/r/20180828090848.1914-1-sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/arch/powerpc/util/sym-handling.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/powerpc/util/sym-handling.c
index de477a3dc968..01a288c79dc5 100644
--- a/tools/perf/arch/powerpc/util/sym-handling.c
+++ b/tools/perf/arch/powerpc/util/sym-handling.c
@@ -21,15 +21,16 @@ bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
#endif
-#if !defined(_CALL_ELF) || _CALL_ELF != 2
int arch__choose_best_symbol(struct symbol *syma,
struct symbol *symb __maybe_unused)
{
char *sym = syma->name;
+#if !defined(_CALL_ELF) || _CALL_ELF != 2
/* Skip over any initial dot */
if (*sym == '.')
sym++;
+#endif
/* Avoid "SyS" kernel syscall aliases */
if (strlen(sym) >= 3 && !strncmp(sym, "SyS", 3))
@@ -40,6 +41,7 @@ int arch__choose_best_symbol(struct symbol *syma,
return SYMBOL_A;
}
+#if !defined(_CALL_ELF) || _CALL_ELF != 2
/* Allow matching against dot variants */
int arch__compare_symbol_names(const char *namea, const char *nameb)
{