From nobody Tue Apr 7 19:02:34 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 581E3C4332F for ; Tue, 18 Oct 2022 18:11:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230183AbiJRSLJ (ORCPT ); Tue, 18 Oct 2022 14:11:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229816AbiJRSLC (ORCPT ); Tue, 18 Oct 2022 14:11:02 -0400 Received: from mail-ed1-x530.google.com (mail-ed1-x530.google.com [IPv6:2a00:1450:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 430752A402 for ; Tue, 18 Oct 2022 11:11:01 -0700 (PDT) Received: by mail-ed1-x530.google.com with SMTP id a67so21677911edf.12 for ; Tue, 18 Oct 2022 11:11:01 -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=vGvV10NBcCrSezhTjPfao8bP5T+d+bVsisSq+cCouQY=; b=cp/WUR6aCWDI+OCpdo1Mqr37ZrkfYXFwt2cAJh73Rf++Ascr6Pz5amkT4eshLOmmx5 I0sXthOSWHzTxx7KwTkIx5m4VZyF/ULV3atv3AnIicjKIPTEetEh2ZZLctb+ClyI0De/ HxvvI0ijAX38uAiMRAP6Xop6Ar7rmg9DsM+kdALIDC2oqA0emaacv5H62+RRe09rHxOJ 0aBVQG16MsalBddkiNBvDbV5KYggQzgZwcDkzQ+CuOZ8VQiCGuzWTvV8hjafJ5trvg7A YmMWXKMxxqXNtEF6deex7PGOzGkiFnz/NsX00cO4/cIY6JCqUTNPCJiLqUM4jU9XVnoi +5xA== 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=vGvV10NBcCrSezhTjPfao8bP5T+d+bVsisSq+cCouQY=; b=On5lEBzWigNsDTcA/4RLi7CHzx2dwRops24GYcO1VGLgsAblL1TGr95BLEPuhCOJ8b mkLkhtDpGdGBqgXgpi3KeuG5mzSP4SZZgNWvD1s6ooZ6McZ5si2feZGkjjVLmTImm4O1 Y11hTrHX4Gnpn7f/U0blCVeUAYS2MoAuBlYrG6eNrQs9/zpMMvjnVQ8Mn8TNQCcuL/Cw McRD+9xb8BF15mYApnWaynfq6VpvZ1GSbyBPtN/khRN97B0d8jqzZVa+AZDTqkDIa88B mpvd5nsTWcqMAJL3wqn34VCDPIABvpTUcyIRWVPtfcCN/nBsBlzW90b05QWzwAGvbdzs pM9g== X-Gm-Message-State: ACrzQf1I1135y3b+sZ8EIFEzOM9Fo/A7RMCFlw2Wp0REYhkN6AQMbfl+ y0habHUTRxjG3ylB5ho//v/df5HZQew= X-Google-Smtp-Source: AMsMyM4gAfyaTp00ZrQx53AEKrsE2jZKlpRzrjlGcl07GaznwjzM2RvcbfXk66RxgAWkyqnshjwPuw== X-Received: by 2002:a05:6402:320e:b0:45c:ae50:dbca with SMTP id g14-20020a056402320e00b0045cae50dbcamr3810327eda.104.1666116659623; Tue, 18 Oct 2022 11:10:59 -0700 (PDT) Received: from pc638.lan ([155.137.26.201]) by smtp.gmail.com with ESMTPSA id c1-20020a17090618a100b007877ad05b32sm7739302ejf.208.2022.10.18.11.10.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 11:10:59 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Christoph Hellwig , Matthew Wilcox , Nicholas Piggin , Steven Rostedt , Uladzislau Rezki , Oleksiy Avramchenko Subject: [PATCH v2 3/7] mm: vmalloc: Add free_vmap_area_noflush trace event Date: Tue, 18 Oct 2022 20:10:49 +0200 Message-Id: <20221018181053.434508-4-urezki@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221018181053.434508-1-urezki@gmail.com> References: <20221018181053.434508-1-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. Signed-off-by: Uladzislau Rezki (Sony) Reviewed-by: Christoph Hellwig --- include/trace/events/vmalloc.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/include/trace/events/vmalloc.h b/include/trace/events/vmalloc.h index afeb8003a0f2..ad4e02191f35 100644 --- a/include/trace/events/vmalloc.h +++ b/include/trace/events/vmalloc.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_VMALLOC_H */ =20 /* This part must be outside protection */ --=20 2.30.2