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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Clark Williams <williams@redhat.com>,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	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>
Subject: [PATCH 12/13] perf probe powerpc: Ignore SyS symbols irrespective of endianness
Date: Mon,  3 Sep 2018 11:52:23 -0300	[thread overview]
Message-ID: <20180903145224.12318-13-acme@kernel.org> (raw)
In-Reply-To: <20180903145224.12318-1-acme@kernel.org>

From: Sandipan Das <sandipan@linux.ibm.com>

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>
---
 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)
 
 #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))
@@ -41,6 +42,7 @@ 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)
 {
-- 
2.14.4

  parent reply	other threads:[~2018-09-03 14:52 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-03 14:52 [GIT PULL 00/13] perf/urgent fixes Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 01/13] perf annotate: Properly interpret indirect call Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 02/13] perf tests: Add breakpoint modify tests Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 03/13] perf/hw_breakpoint: Modify breakpoint even if the new attr has disabled set Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 04/13] perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0 Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 05/13] perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 06/13] perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 07/13] perf arm64: Fix include path for asm-generic/unistd.h Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 08/13] perf evsel: Fix potential null pointer dereference in perf_evsel__new_idx() Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 09/13] perf tools: Streamline bpf examples and headers installation Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 10/13] perf util: Fix bad memory access in trace info Arnaldo Carvalho de Melo
2018-09-03 14:52 ` [PATCH 11/13] perf event-parse: Use fixed size string for comms Arnaldo Carvalho de Melo
2018-09-03 14:52 ` Arnaldo Carvalho de Melo [this message]
2018-09-03 14:52 ` [PATCH 13/13] perf annotate: Fix parsing aarch64 branch instructions after objdump update Arnaldo Carvalho de Melo
2018-09-09 19:39 ` [GIT PULL 00/13] perf/urgent fixes Ingo Molnar

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