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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Sandipan Das <sandipan@linux.ibm.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Ravi Bangoria <ravi.bangoria@linux.ibm.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 14/65] perf probe powerpc: Ignore SyS symbols
 irrespective of endianness
Thread-Topic: [PATCH AUTOSEL 4.18 14/65] perf probe powerpc: Ignore SyS
 symbols irrespective of endianness
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Date:   Mon, 1 Oct 2018 00:38:11 +0000
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From: Sandipan Das <sandipan@linux.ibm.com>

[ 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 Sy=
S 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>
---
 tools/perf/arch/powerpc/util/sym-handling.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/=
powerpc/util/sym-handling.c
index 20e7d74d86cd..10a44e946f77 100644
--- a/tools/perf/arch/powerpc/util/sym-handling.c
+++ b/tools/perf/arch/powerpc/util/sym-handling.c
@@ -22,15 +22,16 @@ bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
=20
 #endif
=20
-#if !defined(_CALL_ELF) || _CALL_ELF !=3D 2
 int arch__choose_best_symbol(struct symbol *syma,
 			     struct symbol *symb __maybe_unused)
 {
 	char *sym =3D syma->name;
=20
+#if !defined(_CALL_ELF) || _CALL_ELF !=3D 2
 	/* Skip over any initial dot */
 	if (*sym =3D=3D '.')
 		sym++;
+#endif
=20
 	/* Avoid "SyS" kernel syscall aliases */
 	if (strlen(sym) >=3D 3 && !strncmp(sym, "SyS", 3))
@@ -41,6 +42,7 @@ int arch__choose_best_symbol(struct symbol *syma,
 	return SYMBOL_A;
 }
=20
+#if !defined(_CALL_ELF) || _CALL_ELF !=3D 2
 /* Allow matching against dot variants */
 int arch__compare_symbol_names(const char *namea, const char *nameb)
 {
--=20
2.17.1