From nobody Tue Apr 7 15:54:02 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 9F800C4332F for ; Mon, 17 Oct 2022 16:02:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231220AbiJQQC5 (ORCPT ); Mon, 17 Oct 2022 12:02:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230196AbiJQQCo (ORCPT ); Mon, 17 Oct 2022 12:02:44 -0400 Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAD3C6DAD0 for ; Mon, 17 Oct 2022 09:02:42 -0700 (PDT) Received: by mail-ej1-x62c.google.com with SMTP id d26so25978875ejc.8 for ; Mon, 17 Oct 2022 09:02:42 -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=FwjCcmT197rmgh5QI5e3OYcSXGX0J/38zjdy+NQLWYvd36DTytm0a9xBb/IVvrvF0m NeTlftucGk9bI3HSKTXMixH7YlHMB7m/qnAKI+1GzsSdwrrMfD5uVgsEABz9UJ3YKBXF diMaxcKQucmoyB8BbBfaSPCvum3Hk6iPW34T2KUZpguWuKRUVCqpjUhaEuIoPME22BTK uStcrtd21fD5JEXPENWctXC9cYfaidqN8WOdR5ymvUnmYEBfa98t6dq7oL3aGIpJjgxx kSTrDAAJ29nzE08s3MhU+S2C9r/NHfqyHauqVyH3qssZwy8VkCEZj/nIInk/D9vANe+m TgiQ== 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=eA/D3+GpPFNJItmpOV2zfoiTv1RrNlw5rnk5mCqANrHSgrX68Qq9F9tNGiKetf1mwj Fy+RTpJHydCfQ97gFVeiuwwlEOwHHbgy9hz11dYTCJFVbat/qYwS8iL50buSi5P67m/l 4H279fBUkMgf6UNnS296KKjn/bzE55AUHvJYWB+/pz0zgTIe6Q1R3LRog2q/Wxb4DVP0 Yk/W27jgArnsw5CobgBjf4VYP9G2wQnfBAP3cNF9dVypf5xB5yfPKGINNpgX98Y/OzUm GxuUdv1xfbFHQIrAGDTg8OiFUILXoqHxq8FY4AnNy1Sh3l54iKHx/y2KGtr83zLqeDJ4 dCyw== X-Gm-Message-State: ACrzQf2xl6CnjAzSM31eM3VrwYafqH9nN1mJNWqsTjNF5azOsl7r4Y7C Eb4l847CZlxWQ6uStYQOWKs= X-Google-Smtp-Source: AMsMyM7mQD7IJcK53cEQL1/Z+YHex7sxuqWGp8otU30wY2tEfaxu2LL184YVDQk0dPc0p6SpQLXgjg== X-Received: by 2002:a17:906:d54d:b0:78e:2fbf:ca2a with SMTP id cr13-20020a170906d54d00b0078e2fbfca2amr9476322ejc.488.1666022561205; Mon, 17 Oct 2022 09:02:41 -0700 (PDT) Received: from pc638.lan ([155.137.26.201]) by smtp.gmail.com with ESMTPSA id g16-20020a170906539000b0073d5948855asm6389629ejo.1.2022.10.17.09.02.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Oct 2022 09:02:40 -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 a free_vmap_area_noflush trace event Date: Mon, 17 Oct 2022 18:02:28 +0200 Message-Id: <20221017160233.16582-5-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