From: Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com>
I found couple of events using al, bl, cl and dl registers for argument.
These are not directly accepted by uprobe_events and thus needs to be
mapped to ax, bx, cx and dx respectively.
Few ex,
/usr/bin/qemu-system-s390x
css_adapter_interrupt: 1@%bl
css_chpid_add: 1@%cl 1@%sil 1@%dl
dma_bdrv_io: 8@%rbx 8@%rbp -8@%r14 1@%al
/usr/bin/postgres
buffer__read__done: ... -1@-bash -1@%al
buffer__read__start: ... -1@%al
I don't find any sdt events using ah, bh,... registers. But I also don't
see any reason to not use them, so there might be rare events using
these registers, and if so, perf should have a renaming logic for them
too.
Signed-off-by: Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhira...@kernel.org>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Alexis Berlemont <alexis.berlem...@gmail.com>
Cc: Hemant Kumar <hem...@linux.vnet.ibm.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Link:
http://lkml.kernel.org/r/20170328094754.3156-2-ravi.bango...@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/arch/x86/util/perf_regs.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/perf/arch/x86/util/perf_regs.c
b/tools/perf/arch/x86/util/perf_regs.c
index d8a8dcf761f7..fa1fd196837d 100644
--- a/tools/perf/arch/x86/util/perf_regs.c
+++ b/tools/perf/arch/x86/util/perf_regs.c
@@ -40,12 +40,20 @@ struct sdt_name_reg {
static const struct sdt_name_reg sdt_reg_renamings[] = {
SDT_NAME_REG(eax, ax),
SDT_NAME_REG(rax, ax),
+ SDT_NAME_REG(al, ax),
+ SDT_NAME_REG(ah, ax),
SDT_NAME_REG(ebx, bx),
SDT_NAME_REG(rbx, bx),
+ SDT_NAME_REG(bl, bx),
+ SDT_NAME_REG(bh, bx),
SDT_NAME_REG(ecx, cx),
SDT_NAME_REG(rcx, cx),
+ SDT_NAME_REG(cl, cx),
+ SDT_NAME_REG(ch, cx),
SDT_NAME_REG(edx, dx),
SDT_NAME_REG(rdx, dx),
+ SDT_NAME_REG(dl, dx),
+ SDT_NAME_REG(dh, dx),
SDT_NAME_REG(esi, si),
SDT_NAME_REG(rsi, si),
SDT_NAME_REG(sil, si),
--
2.9.3
