From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C606DC49ED7 for ; Sat, 21 Sep 2019 12:42:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97882217F5 for ; Sat, 21 Sep 2019 12:42:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569069777; bh=URrz7/dMKxSHyejVNBlk37ne9IzJ/dVtSbABVYlhstg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UoclSP6IABUaJE33ErLoPVdakbQ6Cuyvu0oPjEG+Snv+IB5P0I6Tue1/if0bccfot JbsGQv1S/jxHWW7yaj1pHaT6NTs3q2gEtNaxiDfOyyh49/52LRIMrdulFezdGSRXxU 7gyqNZRYX5Mnbn95y3FvWnZBNCT924couEx1/dyI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407654AbfIUMm4 (ORCPT ); Sat, 21 Sep 2019 08:42:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:38836 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407642AbfIUMm4 (ORCPT ); Sat, 21 Sep 2019 08:42:56 -0400 Received: from quaco.ghostprotocols.net (user.186-235-137-39.acesso10.net.br [186.235.137.39]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DFEFA208C0; Sat, 21 Sep 2019 12:42:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569069775; bh=URrz7/dMKxSHyejVNBlk37ne9IzJ/dVtSbABVYlhstg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=txVpHuecOIohxXPixYifpTfIgnDqJ0LFm01iPHKYeM43jcnWsnXp+3K1YOM/e0Jj7 xOQfpic0JjPqZepYcXdSQ0yMFPqSrfqC10OyucRmTdZGfjl+WhgyrBtcMq8T2w6J9v lDxOSlZKFb1KSxEZSJXNPKGSITLU4nCXlZXqE0wU= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Brendan Gregg , Catalin Marinas , =?UTF-8?q?Luis=20Cl=C3=A1udio=20Gon=C3=A7alves?= , Will Deacon Subject: [PATCH 02/10] tools headers uapi: Sync prctl.h with the kernel sources Date: Sat, 21 Sep 2019 09:42:32 -0300 Message-Id: <20190921124240.15741-3-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190921124240.15741-1-acme@kernel.org> References: <20190921124240.15741-1-acme@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo To get the changes in: 63f0c6037965 ("arm64: Introduce prctl() options to control the tagged user addresses ABI") that introduces prctl options that then automagically gets catched by the prctl cmd table generator, and thus supported in the 'perf trace' prctl beautifier for the 'option' argument: $ tools/perf/trace/beauty/prctl_option.sh > after $ diff -u before after --- before 2019-09-20 14:38:41.386720870 -0300 +++ after 2019-09-20 14:40:02.583990802 -0300 @@ -49,6 +49,8 @@ [52] = "GET_SPECULATION_CTRL", [53] = "SET_SPECULATION_CTRL", [54] = "PAC_RESET_KEYS", + [55] = "SET_TAGGED_ADDR_CTRL", + [56] = "GET_TAGGED_ADDR_CTRL", }; static const char *prctl_set_mm_options[] = { [1] = "START_CODE", $ For now just the translation of 55 and 56 to the respecting strings are done, more work needed to allow for filters to be used using strings. This, for instance, already works: # perf record -e syscalls:sys_enter_close --filter="fd==4" # perf script | head -5 gpm 1018 [006] 21327.171436: syscalls:sys_enter_close: fd: 0x00000004 gpm 1018 [006] 21329.171583: syscalls:sys_enter_close: fd: 0x00000004 bash 4882 [002] 21330.785496: syscalls:sys_enter_close: fd: 0x00000004 bash 20672 [001] 21330.785719: syscalls:sys_enter_close: fd: 0x00000004 find 20672 [001] 21330.789082: syscalls:sys_enter_close: fd: 0x00000004 # perf record -e syscalls:sys_enter_close --filter="fd>=4" ^C[ perf record: Woken up 1 times to write data ] # perf script | head -5 gpm 1018 [005] 21401.178501: syscalls:sys_enter_close: fd: 0x00000004 gsd-housekeepin 2287 [006] 21402.225365: syscalls:sys_enter_close: fd: 0x0000000b gsd-housekeepin 2287 [006] 21402.226234: syscalls:sys_enter_close: fd: 0x0000000b gsd-housekeepin 2287 [006] 21402.227255: syscalls:sys_enter_close: fd: 0x0000000b gsd-housekeepin 2287 [006] 21402.228088: syscalls:sys_enter_close: fd: 0x0000000b # Being able to pass something like: # perf record -e syscalls:sys_enter_prctl --filter="option=*TAGGED_ADDR*" Should be easy enough, first using tracepoint filters, then via the augmented_raw_syscalls.c BPF method. This addresses this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h' diff -u tools/include/uapi/linux/prctl.h include/uapi/linux/prctl.h Cc: Adrian Hunter Cc: Brendan Gregg Cc: Catalin Marinas Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Cc: Will Deacon Link: https://lkml.kernel.org/n/tip-y8u8kvflooyo9x0if1g3jska@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/uapi/linux/prctl.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/include/uapi/linux/prctl.h b/tools/include/uapi/linux/prctl.h index 094bb03b9cc2..7da1b37b27aa 100644 --- a/tools/include/uapi/linux/prctl.h +++ b/tools/include/uapi/linux/prctl.h @@ -181,7 +181,7 @@ struct prctl_mm_map { #define PR_GET_THP_DISABLE 42 /* - * Tell the kernel to start/stop helping userspace manage bounds tables. + * No longer implemented, but left here to ensure the numbers stay reserved: */ #define PR_MPX_ENABLE_MANAGEMENT 43 #define PR_MPX_DISABLE_MANAGEMENT 44 @@ -229,4 +229,9 @@ struct prctl_mm_map { # define PR_PAC_APDBKEY (1UL << 3) # define PR_PAC_APGAKEY (1UL << 4) +/* Tagged user address controls for arm64 */ +#define PR_SET_TAGGED_ADDR_CTRL 55 +#define PR_GET_TAGGED_ADDR_CTRL 56 +# define PR_TAGGED_ADDR_ENABLE (1UL << 0) + #endif /* _LINUX_PRCTL_H */ -- 2.21.0