From nobody Tue Apr 7 15:55:03 2026 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 AAB7BC4332F for ; Mon, 17 Oct 2022 16:03:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231241AbiJQQC7 (ORCPT ); Mon, 17 Oct 2022 12:02:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229896AbiJQQCp (ORCPT ); Mon, 17 Oct 2022 12:02:45 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 141A46B64B for ; Mon, 17 Oct 2022 09:02:43 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id g27so16706181edf.11 for ; Mon, 17 Oct 2022 09:02:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=V8PGF12HowaED9GsfrGSUOr+T+BR5MJRz00gwWuwNBY=; b=PuSyLUliSWcCdVU4u7qHBbywoFiv8OcPvJLS/1g7R6MQWRqgwi9ab6h3UNMAdzJ3r2 LE2uVd4tU/Ubdl3myCXCO7PeGNs0vZnHReXivgvRK4Bze4KVRzOvfA4IOQeK3rrfgt5D BhZZPORrFgoF7oDSHAYM4kvWeAMUBuIE+njxY7T2eKBV5QjqdSWPU6xjQMAcWilw4HNE XUcV9qbf13+VHz9QpAEi8xk9Rd7hA1twg3bjLCnisbFN1Gk9+o5TNA3+jq20D4ikP/W0 5loQEp4hEFdhDBNpIjn7WEtAFSZD2gDZlrfK4iHK+ND1y29bST762akZlqLlK6Zjd8v2 gFZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=V8PGF12HowaED9GsfrGSUOr+T+BR5MJRz00gwWuwNBY=; b=0ydvQxqmDP9pGzDFGNZKNZn1lvzMDesjorfG87BHQIyIge15Udz7YPSDWQwX7MFk7n devx7wIscoDD93gVFFb703ugbr4Vpacgdx9xDIYx+pjciykbsTxEgfw/QWsIXbtwhYSw p5p6s4xhBbzYoL3yF0AWhdbdX7FmyFzr7AvC9gB4IYZbPHDcIzfFsYAhdRS794LYy63j 3gewocabqzmRLWBupUDeUNUHewvbZ6jNx1KF5yjVxoILr4FXruGIOGEd5vTXPdasGDtu iN5LpetieM5TuhdgTLns2vnuupCgY/BvTlZNwL7/N2DGvWeb7TsAZt0T8FQe2FuSLNj+ FDow== X-Gm-Message-State: ACrzQf1bAvbmpcOIwe93px4E9NmVJ9A/QBFAYm7XY6DOWfRINdbFmNo5 WVupWbExZKQSSILxvPD38A4= X-Google-Smtp-Source: AMsMyM5J6EvtgyhKOpb9oGBdRpl3SDQY9wi4qJB+ZFoj5u0QAiVRfFyH462ZJNpLtpsrBwVY0Rj1CQ== X-Received: by 2002:a05:6402:35d6:b0:45d:a52f:2d30 with SMTP id z22-20020a05640235d600b0045da52f2d30mr3601725edc.4.1666022562308; Mon, 17 Oct 2022 09:02:42 -0700 (PDT) Received: from pc638.lan ([155.137.26.201]) by smtp.gmail.com with ESMTPSA id g16-20020a170906539000b0073d5948855asm6389629ejo.1.2022.10.17.09.02.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Oct 2022 09:02:41 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Christoph Hellwig , Matthew Wilcox , Nicholas Piggin , Uladzislau Rezki , Oleksiy Avramchenko Subject: [PATCH 3/7] mm: vmap: Add free_vmap_area_noflush trace event Date: Mon, 17 Oct 2022 18:02:29 +0200 Message-Id: <20221017160233.16582-6-urezki@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221017160233.16582-1-urezki@gmail.com> References: <20221017160233.16582-1-urezki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This event is used in order to validate/debug a start address of freed VA, number of currently outstanding and maximum allowed areas. To: Steven Rostedt Signed-off-by: Uladzislau Rezki (Sony) --- include/trace/events/vmap.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/include/trace/events/vmap.h b/include/trace/events/vmap.h index 2af2b84c6eb7..5ba9bf58772a 100644 --- a/include/trace/events/vmap.h +++ b/include/trace/events/vmap.h @@ -83,6 +83,40 @@ TRACE_EVENT(purge_vmap_area_lazy, __entry->start, __entry->end, __entry->npurged) ); =20 +/** + * free_vmap_area_noflush - called when a vmap area is freed + * @va_start: a start address of VA + * @nr_lazy: number of current lazy pages + * @nr_lazy_max: number of maximum lazy pages + * + * This event is used for a debug purpose. It gives some + * indication about a VA that is released, number of current + * outstanding areas and a maximum allowed threshold before + * dropping all of them. + */ +TRACE_EVENT(free_vmap_area_noflush, + + TP_PROTO(unsigned long va_start, unsigned long nr_lazy, + unsigned long nr_lazy_max), + + TP_ARGS(va_start, nr_lazy, nr_lazy_max), + + TP_STRUCT__entry( + __field(unsigned long, va_start) + __field(unsigned long, nr_lazy) + __field(unsigned long, nr_lazy_max) + ), + + TP_fast_assign( + __entry->va_start =3D va_start; + __entry->nr_lazy =3D nr_lazy; + __entry->nr_lazy_max =3D nr_lazy_max; + ), + + TP_printk("va_start=3D0x%lx nr_lazy=3D%lu nr_lazy_max=3D%lu", + __entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max) +); + #endif /* _TRACE_VMAP_H */ =20 /* This part must be outside protection */ --=20 2.30.2