From mboxrd@z Thu Jan 1 00:00:00 1970 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 9C631EB64D9 for ; Mon, 10 Jul 2023 16:09:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231513AbjGJQJP (ORCPT ); Mon, 10 Jul 2023 12:09:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229954AbjGJQJO (ORCPT ); Mon, 10 Jul 2023 12:09:14 -0400 Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CE35BC for ; Mon, 10 Jul 2023 09:09:13 -0700 (PDT) Received: by mail-qt1-x82c.google.com with SMTP id d75a77b69052e-40371070eb7so399221cf.1 for ; Mon, 10 Jul 2023 09:09:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689005352; x=1691597352; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=PTiYEcrVX04kfMcNb49jfpkl4E2yxYs1bGPg7/V1/HA=; b=mLTPgOWBxSD1SPV0oWxhxXSDCPtH7csxYjduUf1FBy0FfTGa4VxNA6UvwkixjZo6jw f6egEr8mzqDOnNAnLXTMhCGug1ADybHUXbZerPjiLPu+VOrJTlz77PDwc39tUXeQ7L8o EStpUmOxA3HYNQI003MetXllZgwWR9lBjkAbWzdnOmEB7H4EBOlM1bg/XkwKNJT+d7Af XjkUWByDGfSW9o/JeWgM9XSda+ezynO3Jjcn2OaY/Pl5VnPOvwD4QNExOPbru0Jd0XHI Bz1vHLxiLD1iQ5BsuUU1UZFOrgZZk9qZRUuwClabYnBsoPX91J5r0n1NJdOFwM4e2O+g clTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689005352; x=1691597352; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PTiYEcrVX04kfMcNb49jfpkl4E2yxYs1bGPg7/V1/HA=; b=OKr706Zex7h8NDBJ1t8WPsjZ/WQqbGa8xqJqZiUkLrEP+ObNEZCK0zRLqLaS2RbMP5 BRbdUWa1NXKSQWu04n0tYc2DUhXwjsdTTCqBiXSUPvFE3HIPpjJHqJ2mvZWSAD8w6hVU AY14T47VI8fwvYy4MBOmr40K0nal2jLTb1lr55PIjCysvXU7gOTO7FrYvFWrxwODlgkk cdMjk/y1xHdGoqU26+i3TmRmMk3qyhDsBlNKk3dXQ6vPRU/ZTZKW7WZQ90LUiABJO+R9 GsLYZ/+f8r14+6TDQq5+RMrk3jTHAZ8fUHZ6+EJm0p9bvtMGJSkhHHAcPGPdWTeg/1z5 0hfw== X-Gm-Message-State: ABy/qLbX5C7gv/K5bwXchmzz3awHR/r/t8LKxQsJQzV4HFqveQGoQ87z /9iFvhku6fgq+rA/MRw0lRR/mwQpJDyq8w3zQZ0WPw== X-Google-Smtp-Source: APBJJlHGZmfLfuEEqzR21NS5OF7E+xlM5zHBTw1/jIFXFYPfQfiXQkAbo1dOcHcob7SZnW2XzV2V2eNYPTiX4sgDfUo= X-Received: by 2002:a05:622a:11ca:b0:403:affb:3c03 with SMTP id n10-20020a05622a11ca00b00403affb3c03mr186410qtk.10.1689005352318; Mon, 10 Jul 2023 09:09:12 -0700 (PDT) MIME-Version: 1.0 References: <20230710122138.1450930-1-james.clark@arm.com> <20230710122138.1450930-5-james.clark@arm.com> In-Reply-To: <20230710122138.1450930-5-james.clark@arm.com> From: Ian Rogers Date: Mon, 10 Jul 2023 09:09:01 -0700 Message-ID: Subject: Re: [PATCH 4/4] perf: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability To: James Clark Cc: linux-perf-users@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Adrian Hunter , Thomas Gleixner , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Will Deacon , Kan Liang , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org On Mon, Jul 10, 2023 at 5:22=E2=80=AFAM James Clark w= rote: > > Since commit bd2756811766 ("perf: Rewrite core context handling") the > relationship between perf_event_context and PMUs has changed so that > the error scenario that PERF_PMU_CAP_HETEROGENEOUS_CPUS originally > silenced no longer exists. > > Remove the capability to avoid confusion that it actually influences > any perf core behavior. This change should be a no-op. > > Signed-off-by: James Clark Acked-by: Ian Rogers Thanks, Ian > --- > include/linux/perf_event.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h > index d5628a7b5eaa..3f4d941fd6c5 100644 > --- a/include/linux/perf_event.h > +++ b/include/linux/perf_event.h > @@ -288,7 +288,7 @@ struct perf_event_pmu_context; > #define PERF_PMU_CAP_EXTENDED_REGS 0x0008 > #define PERF_PMU_CAP_EXCLUSIVE 0x0010 > #define PERF_PMU_CAP_ITRACE 0x0020 > -#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x0040 > +/* Unused 0x0040 */ > #define PERF_PMU_CAP_NO_EXCLUDE 0x0080 > #define PERF_PMU_CAP_AUX_OUTPUT 0x0100 > #define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0200 > -- > 2.34.1 >