From patchwork Thu Aug 17 20:45:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 13356936 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0212CC677C4 for ; Thu, 17 Aug 2023 20:46:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355005AbjHQUqA (ORCPT ); Thu, 17 Aug 2023 16:46:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52276 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355004AbjHQUp3 (ORCPT ); Thu, 17 Aug 2023 16:45:29 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BA7035B6 for ; Thu, 17 Aug 2023 13:45:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id EE55665A9D for ; Thu, 17 Aug 2023 20:45:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE71BC433B7; Thu, 17 Aug 2023 20:45:22 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qWjs1-000Tpt-1S; Thu, 17 Aug 2023 16:45:29 -0400 From: Steven Rostedt To: linux-trace-devel@vger.kernel.org Cc: Ross Zwisler , Stevie Alvarez , "Steven Rostedt (Google)" Subject: [PATCH v4 14/20] libtraceeval histogram: Add data copy callback Date: Thu, 17 Aug 2023 16:45:22 -0400 Message-Id: <20230817204528.114577-15-rostedt@goodmis.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230817204528.114577-1-rostedt@goodmis.org> References: <20230817204528.114577-1-rostedt@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org From: "Steven Rostedt (Google)" Add a callback "copy" to the type that gets called when a copy is done. This is can be used to copy dynamic types. Otherwise the old one is just going to be released. Signed-off-by: Steven Rostedt (Google) --- include/traceeval-hist.h | 5 +++++ src/histograms.c | 3 +++ 2 files changed, 8 insertions(+) diff --git a/include/traceeval-hist.h b/include/traceeval-hist.h index e8a7981ac2c0..a87f39afc050 100644 --- a/include/traceeval-hist.h +++ b/include/traceeval-hist.h @@ -82,6 +82,10 @@ typedef int (*traceeval_data_hash_fn)(struct traceeval *teval, const struct traceeval_type *type, const union traceeval_data *data); +typedef int (*traceeval_data_copy_fn)(const struct traceeval_type *type, + union traceeval_data *dst, + const union traceeval_data *src); + /* * struct traceeval_type - Describes the type of a traceevent_data instance * @type: The enum type that describes the traceeval_data @@ -126,6 +130,7 @@ struct traceeval_type { size_t id; traceeval_data_release_fn release; traceeval_data_cmp_fn cmp; + traceeval_data_copy_fn copy; traceeval_data_hash_fn hash; }; diff --git a/src/histograms.c b/src/histograms.c index c4ff632b4f87..08d711239284 100644 --- a/src/histograms.c +++ b/src/histograms.c @@ -511,6 +511,9 @@ static int copy_traceeval_data(struct traceeval_type *type, { unsigned long long val; + if (type->copy) + return type->copy(type, dst, src); + *dst = *src; switch(type->type) {