From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-dm3nam03on0101.outbound.protection.outlook.com ([104.47.41.101]:12851 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728618AbeJAHNW (ORCPT ); Mon, 1 Oct 2018 03:13:22 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Sandipan Das , Jiri Olsa , Ravi Bangoria , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL 4.18 14/65] perf probe powerpc: Ignore SyS symbols irrespective of endianness Date: Mon, 1 Oct 2018 00:38:11 +0000 Message-ID: <20181001003754.146961-14-alexander.levin@microsoft.com> References: <20181001003754.146961-1-alexander.levin@microsoft.com> In-Reply-To: <20181001003754.146961-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Sandipan Das [ 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 Signed-off-by: Sandipan Das Reviewed-by: Kamalesh Babulal Acked-by: Naveen N. Rao Cc: Jiri Olsa Cc: Ravi Bangoria 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 Signed-off-by: Sasha Levin --- 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