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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2021-02-04 11:35:23 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-03-01 14:47:50 -0300 |
| commit | b5f184fbdb03b4fcc1141de34dd5ec964ca5d99e (patch) | |
| tree | d71c47e392404b4d3346b09b0525c6ecd4e29566 /tools/perf/util/dwarf-regs.c | |
| parent | 84b7725536d82e99b7564a079b8627f3be692a13 (diff) | |
| download | lwn-b5f184fbdb03b4fcc1141de34dd5ec964ca5d99e.tar.gz lwn-b5f184fbdb03b4fcc1141de34dd5ec964ca5d99e.zip | |
perf tools: Support MIPS unwinding and dwarf-regs
Map perf APIs (perf_reg_name/get_arch_regstr/unwind__arch_reg_id) with
MIPS specific registers.
[ayan@wavecomp.com: repick this patch for unwinding userstack backtrace
by perf and libunwind on MIPS based CPU.]
[yangtiezhu@loongson.cn: Add sample_reg_masks[] to fix build error,
silence some checkpatch errors and warnings, and also separate the
original patches into two parts (MIPS kernel and perf tools) to merge
easily.]
The original patches:
https://lore.kernel.org/patchwork/patch/1126521/
https://lore.kernel.org/patchwork/patch/1126520/
Committer notes:
Do it as __perf_reg_name() to cope with:
067012974c8ae31a ("perf tools: Fix arm64 build error with gcc-11")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Archer Yan <ayan@wavecomp.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Jianlin Lv <Jianlin.Lv@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Juxin Gao <gaojuxin@loongson.cn>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Link: http://lore.kernel.org/lkml/1612409724-3516-3-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Archer Yan <ayan@wavecomp.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/dwarf-regs.c')
| -rw-r--r-- | tools/perf/util/dwarf-regs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c index 1b49ecee5aff..3fa4486742cd 100644 --- a/tools/perf/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs.c @@ -24,6 +24,7 @@ #include "../arch/s390/include/dwarf-regs-table.h" #include "../arch/sparc/include/dwarf-regs-table.h" #include "../arch/xtensa/include/dwarf-regs-table.h" +#include "../arch/mips/include/dwarf-regs-table.h" #define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL) @@ -53,6 +54,8 @@ const char *get_dwarf_regstr(unsigned int n, unsigned int machine) return __get_dwarf_regstr(sparc_regstr_tbl, n); case EM_XTENSA: return __get_dwarf_regstr(xtensa_regstr_tbl, n); + case EM_MIPS: + return __get_dwarf_regstr(mips_regstr_tbl, n); default: pr_err("ELF MACHINE %x is not supported.\n", machine); } |