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authorJiri Olsa <jolsa@redhat.com>2021-09-28 21:52:53 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-10-31 12:51:41 -0300
commit89ac61ff05a5c79545aa93f7b1da7e4dbc60fc9a (patch)
treeee424f17a2a9d42544ec64c54400d8f5795641d1 /tools
parent29c77550eef31b0d72a45b49eeab03b8963264e8 (diff)
perf callchain: Fix compilation on powerpc with gcc11+
Got following build fail on powerpc: CC arch/powerpc/util/skip-callchain-idx.o In function ‘check_return_reg’, inlined from ‘check_return_addr’ at arch/powerpc/util/skip-callchain-idx.c:213:7, inlined from ‘arch_skip_callchain_idx’ at arch/powerpc/util/skip-callchain-idx.c:265:7: arch/powerpc/util/skip-callchain-idx.c:54:18: error: ‘dwarf_frame_register’ accessing 96 bytes \ in a region of size 64 [-Werror=stringop-overflow=] 54 | result = dwarf_frame_register(frame, ra_regno, ops_mem, &ops, &nops); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/util/skip-callchain-idx.c: In function ‘arch_skip_callchain_idx’: arch/powerpc/util/skip-callchain-idx.c:54:18: note: referencing argument 3 of type ‘Dwarf_Op *’ In file included from /usr/include/elfutils/libdwfl.h:32, from arch/powerpc/util/skip-callchain-idx.c:10: /usr/include/elfutils/libdw.h:1069:12: note: in a call to function ‘dwarf_frame_register’ 1069 | extern int dwarf_frame_register (Dwarf_Frame *frame, int regno, | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors The dwarf_frame_register args changed with [1], Updating ops_mem accordingly. [1] https://sourceware.org/git/?p=elfutils.git;a=commit;h=5621fe5443da23112170235dd5cac161e5c75e65 Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Mark Wieelard <mjw@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: https://lore.kernel.org/r/20210928195253.1267023-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/arch/powerpc/util/skip-callchain-idx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/arch/powerpc/util/skip-callchain-idx.c b/tools/perf/arch/powerpc/util/skip-callchain-idx.c
index 3018a054526a..20cd6244863b 100644
--- a/tools/perf/arch/powerpc/util/skip-callchain-idx.c
+++ b/tools/perf/arch/powerpc/util/skip-callchain-idx.c
@@ -45,7 +45,7 @@ static const Dwfl_Callbacks offline_callbacks = {
*/
static int check_return_reg(int ra_regno, Dwarf_Frame *frame)
{
- Dwarf_Op ops_mem[2];
+ Dwarf_Op ops_mem[3];
Dwarf_Op dummy;
Dwarf_Op *ops = &dummy;
size_t nops;