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=-8.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,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 C8C2FC07542 for ; Sat, 25 May 2019 16:58:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E3E120879 for ; Sat, 25 May 2019 16:58:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="g3u8BE8L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727309AbfEYQ6P (ORCPT ); Sat, 25 May 2019 12:58:15 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:42001 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727255AbfEYQ6M (ORCPT ); Sat, 25 May 2019 12:58:12 -0400 Received: by mail-pl1-f193.google.com with SMTP id go2so5390524plb.9 for ; Sat, 25 May 2019 09:58:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OR3Uh1cJ8Y1n+6QAYb02IJsWUect/WZG9WpBebQdk68=; b=g3u8BE8Lva4Y9OUxdjjAUNev8EVPv54yOh4+UePGhbW22qFyoHy7Q/m58nEZVJ4vBt c858McMgmH/Q8ADAR1Bv39n5xg+cePiAdNSkXnPiU9BHEhOLQsK8k7q2ffChaZN3Dz6L cqKZgDT5scqE4naRNCR5qWmydlz7fUoAGQRVcA+xsugqcLUj55W5Mhobe0fnhoSs6WhZ YYHM4NQDoQI+rplLGlu1+zQFFrMESy0yo3dtcsd9MCoAVkiHGYn2uNy6at+J9Zn9++aG Cnrsu0oD5HZfuwkKY8EgDYPQUmlGgejlQKnrQfe3gmd7ZpSx/J0GYIQKczMHBP1TSvNa KzdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OR3Uh1cJ8Y1n+6QAYb02IJsWUect/WZG9WpBebQdk68=; b=SCLRwMsQL1QM04pHRcCiXinN3jg5f6GPgD6tGjmHuineRhqr1B1kah7jPAVvkMp00t fx0tqtcTuUEbo6CDZhbWrzn2Adfg83d2yNyBY+GhaT9SFI3GZLG+T0SOpEDTEU028wVu BiBlhqZiPdQRKWanGoGaDjB4Yp+6eYQLtvonHjrEFRIbaZ1Nl4ZkEtnfX7NW4QTfZOTc yX/lXBF+VfhoSZ71YjIVEwXAplKx3xvTuGVJ9e6jtXZugPoa1YKKZOPTOhaAvYV8Naow vD3MIvCDAkuFWXOznzQnmqAajMCSNYH4lYnirT6dw0QSKJxc8am3FNAiELYft2qm1M1f W9aw== X-Gm-Message-State: APjAAAUeStV3TiDB5zI+scH40m2eeH2RPf05KzDQI+nmwzCw3JIKkCns A1JYPjUiY0Hq3m7TjB6j6ycgmHcp X-Google-Smtp-Source: APXvYqzN7JNjfBlbCR56hjKlj+XlxRx6pBpTGp3rkR/8X2rbA7aPV3a5eOi28sxRexIZg+oOMQnzbw== X-Received: by 2002:a17:902:b204:: with SMTP id t4mr62632794plr.285.1558803491930; Sat, 25 May 2019 09:58:11 -0700 (PDT) Received: from tw-172-25-31-76.office.twttr.net ([8.25.197.24]) by smtp.gmail.com with ESMTPSA id q142sm8787585pfc.27.2019.05.25.09.58.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 25 May 2019 09:58:11 -0700 (PDT) From: Cong Wang To: linux-kernel@vger.kernel.org Cc: Cong Wang , Steven Rostedt , Ingo Molnar Subject: [PATCH 2/4] trace: let filter_assign_type() detect FILTER_PTR_STRING Date: Sat, 25 May 2019 09:58:00 -0700 Message-Id: <20190525165802.25944-3-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190525165802.25944-1-xiyou.wangcong@gmail.com> References: <20190525165802.25944-1-xiyou.wangcong@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org filter_assign_type() could detect dynamic string and static string, but not string pointers. Teach filter_assign_type() to detect string pointers, and this will be needed by trace event injection code. BTW, trace event hist uses FILTER_PTR_STRING too. Cc: Steven Rostedt Cc: Ingo Molnar Signed-off-by: Cong Wang --- kernel/trace/trace_events_filter.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index d3e59312ef40..550e8a0d048a 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1080,6 +1080,9 @@ int filter_assign_type(const char *type) if (strchr(type, '[') && strstr(type, "char")) return FILTER_STATIC_STRING; + if (strcmp(type, "char *") == 0 || strcmp(type, "const char *") == 0) + return FILTER_PTR_STRING; + return FILTER_OTHER; } -- 2.21.0