Commit-ID: 1b29dfbba124be5077a24996a272205baec1c008
Gitweb: http://git.kernel.org/tip/1b29dfbba124be5077a24996a272205baec1c008
Author: He Kuang <hekuang@xxxxxxxxxx>
AuthorDate: Tue, 24 Jan 2017 10:30:14 +0000
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 26 Jan 2017 11:42:43 -0300
perf probe: Fix wrong register name for arm64
The register name of arm64 architecture is x0-x31 not r0-r31, this patch
changes this typo.
Before this patch:
# perf probe --definition 'sys_write count'
p:probe/sys_write _text+1502872 count=%r2:s64
# echo 'p:probe/sys_write _text+1502872 count=%r2:s64' > \
/sys/kernel/debug/tracing/kprobe_events
Parse error at argument[0]. (-22)
After this patch:
# perf probe --definition 'sys_write count'
p:probe/sys_write _text+1502872 count=%x2:s64
# echo 'p:probe/sys_write _text+1502872 count=%x2:s64' > \
/sys/kernel/debug/tracing/kprobe_events
# echo 1 >/sys/kernel/debug/tracing/events/probe/enable
# cat /sys/kernel/debug/tracing/trace
...
sh-422 [000] d... 650.495930: sys_write: (SyS_write+0x0/0xc8) count=22
sh-422 [000] d... 651.102389: sys_write: (SyS_write+0x0/0xc8) count=26
sh-422 [000] d... 651.358653: sys_write: (SyS_write+0x0/0xc8) count=86
Signed-off-by: He Kuang <hekuang@xxxxxxxxxx>
Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Acked-by: Will Deacon <will.deacon@xxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Bintian Wang <bintian.wang@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170124103015.1936-2-hekuang@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/arch/arm64/include/dwarf-regs-table.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/tools/perf/arch/arm64/include/dwarf-regs-table.h b/tools/perf/arch/arm64/include/dwarf-regs-table.h
index 2675936..36e375f 100644
--- a/tools/perf/arch/arm64/include/dwarf-regs-table.h
+++ b/tools/perf/arch/arm64/include/dwarf-regs-table.h
@@ -2,12 +2,12 @@
/* This is included in perf/util/dwarf-regs.c */
static const char * const aarch64_regstr_tbl[] = {
- "%r0", "%r1", "%r2", "%r3", "%r4",
- "%r5", "%r6", "%r7", "%r8", "%r9",
- "%r10", "%r11", "%r12", "%r13", "%r14",
- "%r15", "%r16", "%r17", "%r18", "%r19",
- "%r20", "%r21", "%r22", "%r23", "%r24",
- "%r25", "%r26", "%r27", "%r28", "%r29",
+ "%x0", "%x1", "%x2", "%x3", "%x4",
+ "%x5", "%x6", "%x7", "%x8", "%x9",
+ "%x10", "%x11", "%x12", "%x13", "%x14",
+ "%x15", "%x16", "%x17", "%x18", "%x19",
+ "%x20", "%x21", "%x22", "%x23", "%x24",
+ "%x25", "%x26", "%x27", "%x28", "%x29",
"%lr", "%sp",
};
#endif
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