From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751399AbdDACLT (ORCPT ); Fri, 31 Mar 2017 22:11:19 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:52743 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750710AbdDACLO (ORCPT ); Fri, 31 Mar 2017 22:11:14 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Ravi Bangoria , Alexander Shishkin , Alexis Berlemont , Hemant Kumar , Michael Ellerman , "Naveen N . Rao" , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 2/9] perf/sdt/x86: Add renaming logic for (missing) 8 bit registers Date: Fri, 31 Mar 2017 23:10:54 -0300 Message-Id: <20170401021101.10198-3-acme@kernel.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170401021101.10198-1-acme@kernel.org> References: <20170401021101.10198-1-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ravi Bangoria 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 Acked-by: Masami Hiramatsu Cc: Alexander Shishkin Cc: Alexis Berlemont Cc: Hemant Kumar Cc: Michael Ellerman Cc: Naveen N. Rao Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170328094754.3156-2-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- 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