From patchwork Thu May 11 17:20:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 13238229 X-Patchwork-Delegate: bpf@iogearbox.net Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C05DF8F55 for ; Thu, 11 May 2023 17:21:02 +0000 (UTC) Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40E1A269E for ; Thu, 11 May 2023 10:21:01 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-ba6388fb324so4818355276.0 for ; Thu, 11 May 2023 10:21:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683825660; x=1686417660; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=3bx8GPX1nLWoIzF04MYA/SB+fKjrXorgzwkWrTrBNPs=; b=gmo6Y3G7D/tTmL9Zlbq/HgpIovOpPZQV9qb4zec60DtcpCnTsjZOukhdS1tGPL3wat QzN+ajErTUGs1DfvpjXFi6qyZh+zPP5Pfl1YGnHjt3ffs8a4Rv5seb/j7kcvKVG94XsB DAzhgamFR7R58CZDuZNr1zu2DER0nHk3u4P5UBzRui9qQ62mk0MaXgxz/BoYT73lWaca 2v24UdEyO+hQSAaE18N3T5UqjDb/X0A0ppesEq+O2UEjzgWcGBRrESYuh72rlOLsN3ec CcYebSglMJ8X8y5+LgBFRLhGoPlbvKnDiSejYpf2miSzbzyyXWgAv4T0iAh5u5P5XZ6J FdFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683825660; x=1686417660; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3bx8GPX1nLWoIzF04MYA/SB+fKjrXorgzwkWrTrBNPs=; b=UsUo3oVxKeSsUhJ5Wd6QoxbHLO7joGXfHmS4WN7Z/SpNhBL6mhoyhnTmSsok2L00q1 cv/uuXAoFtz5HchD9cjhc+9gAv1TiJ1/r2NPPmi4QLOkj5etk3W1OXwdlYBHCzlCzifR j5acSdMS5vNE8LDXxU3XdyxUyPKELkWqwFjikAhhddBI5UNGxTXGdVvVLPFt38eJK9WD D5ASAunagiuTFPRpf+izVtw5nDWAPJrlUQRLb3Fxt47WM+peh77itu0xnAzOOQZKTt9o uTCR2421uicuwoL/L/K7zpEMxKIbME0/KaOPks08nN1+2mTxvh/5awLJ2eb5pK4t4pPy GFMA== X-Gm-Message-State: AC+VfDxLcusyKiL2NAirkfVZHk2PbeLsCs25WIit2IdnXTTqWU72rU+I yyNfoWVNMhqoaSAfWRXRunsjgp6GCS/+XCQ3LekziRufDcclIFTNrcctqK/3P7lFhFtCZWWsCQL zlfDAr1p+6FkQwr+0VHS2zLqHFnu52MY0LwqV0E7kAW5bPU51hg== X-Google-Smtp-Source: ACHHUZ6OdQRdsAKkaMmlX7aclOx9s0idEIILKCM9wElEiI4xpeOTGCUZYw+bnzZ6PufspfT0hAge53o= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:a25:5b84:0:b0:ba2:da66:3d37 with SMTP id p126-20020a255b84000000b00ba2da663d37mr6304491ybb.10.1683825660397; Thu, 11 May 2023 10:21:00 -0700 (PDT) Date: Thu, 11 May 2023 10:20:52 -0700 In-Reply-To: <20230511172054.1892665-1-sdf@google.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230511172054.1892665-1-sdf@google.com> X-Mailer: git-send-email 2.40.1.521.gf1e218fcd8-goog Message-ID: <20230511172054.1892665-3-sdf@google.com> Subject: [PATCH bpf-next 2/4] rculist: add hlist_for_each_rcu From: Stanislav Fomichev To: bpf@vger.kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: bpf@iogearbox.net Same as __hlist_for_each_rcu but uses rcu_dereference_raw to suppress the warning from the update path (which is enforced by extra cond expression). Signed-off-by: Stanislav Fomichev --- include/linux/rculist.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/rculist.h b/include/linux/rculist.h index d29740be4833..7b0a73139b21 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -690,6 +690,12 @@ static inline void hlist_add_behind_rcu(struct hlist_node *n, pos; \ pos = rcu_dereference(hlist_next_rcu(pos))) +#define hlist_for_each_rcu(pos, head, cond...) \ + for (__list_check_rcu(dummy, ## cond, 0), \ + pos = rcu_dereference_raw(hlist_first_rcu(head)); \ + pos; \ + pos = rcu_dereference_raw(hlist_next_rcu(pos))) + /** * hlist_for_each_entry_rcu - iterate over rcu list of given type * @pos: the type * to use as a loop cursor.