From patchwork Wed Mar 6 18:42:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 13584541 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FB0C13E7C5 for ; Wed, 6 Mar 2024 18:42:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709750554; cv=none; b=SewwdMqc88w/c/ssY3t9uTSeJXkyaWqg+mMkcvHKtA4l3mrOQwjZfPXLPStRvXGuiCEDhftW/0Eazxf0n2v7VNQo5A1LgoPsY+8i/7tFWPqGF8za0257YtulmtrGplMJitZCgcDq3SGC7Z/mOMaN6nrsEKUv2HOBzM2wnrbgDfE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709750554; c=relaxed/simple; bh=hbtZxXnoVzB3QnmV5PLXG8Us1o2ekbGwln4vc2//uhw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qOVZUt93ShxFi21Foxp3j+1ler+NNxjaBph4pJq9fedgJDzSSciNG/CCrXYkkAQfSpzdROJgg+hBE6zVkeXxpsxyvHsq4YeBlu2z+rKwLVrF4zZIBoG4DN8G/zJGbccTotJWPRdCu0ZAEwKeTpelhH1pLJ9YIHgsrTug4k73Fzc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=DXqU/L1N; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="DXqU/L1N" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709750551; x=1741286551; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hbtZxXnoVzB3QnmV5PLXG8Us1o2ekbGwln4vc2//uhw=; b=DXqU/L1NPQdkpIL24maNA9g/4v/CLnakKtumAsJ8Gw0UgSOYc/kLl2I4 caI/1XIVRXzn4kAxlkvFKKBPiNbbCfah13VhQFtmUURewmpMEfzqb2PrO 92PZSf+XB4euCTmRRUWmu1rsXo4bJ+1ShCO7hIWzOt7crjHKgcE3PwXg5 Vjx7/5uDYNS3sPvRGkYgacmba9MfQhYgfUvsZLrDqJ9c4dm6jQof+r1yk aYkFgV+LCTA0p0/OyjhHn8qMwAQlA3vikXwgusdHVOSDrrSdfqXfh2C6t AhXgxLvVdu1QPSRqK5Ni5mnk79mo8a0IfnOk493rd3d+Svcppvmi1xuD4 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11005"; a="15819823" X-IronPort-AV: E=Sophos;i="6.06,209,1705392000"; d="scan'208";a="15819823" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Mar 2024 10:42:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,209,1705392000"; d="scan'208";a="9925966" Received: from aschofie-mobl2.amr.corp.intel.com (HELO localhost) ([10.251.9.155]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Mar 2024 10:42:31 -0800 From: alison.schofield@intel.com To: Vishal Verma Cc: Alison Schofield , nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, Jonathan Cameron , Dave Jiang Subject: [ndctl PATCH v10 2/7] cxl: add an optional pid check to event parsing Date: Wed, 6 Mar 2024 10:42:21 -0800 Message-Id: X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alison Schofield When parsing CXL events, callers may only be interested in events that originate from the current process. Introduce an optional argument to the event trace context: event_pid. When event_pid is present, simply skip the parsing of events without a matching pid. It is not a failure to see other, non matching events. The initial use case for this is device poison listings where only the media-error records requested by this process are wanted. Signed-off-by: Alison Schofield Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Reviewed-by: Dan Williams --- cxl/event_trace.c | 5 +++++ cxl/event_trace.h | 1 + 2 files changed, 6 insertions(+) diff --git a/cxl/event_trace.c b/cxl/event_trace.c index 1b5aa09de8b2..93a95f9729fd 100644 --- a/cxl/event_trace.c +++ b/cxl/event_trace.c @@ -214,6 +214,11 @@ static int cxl_event_parse(struct tep_event *event, struct tep_record *record, return 0; } + if (event_ctx->event_pid) { + if (event_ctx->event_pid != tep_data_pid(event->tep, record)) + return 0; + } + if (event_ctx->parse_event) return event_ctx->parse_event(event, record, &event_ctx->jlist_head); diff --git a/cxl/event_trace.h b/cxl/event_trace.h index ec6267202c8b..7f7773b2201f 100644 --- a/cxl/event_trace.h +++ b/cxl/event_trace.h @@ -15,6 +15,7 @@ struct event_ctx { const char *system; struct list_head jlist_head; const char *event_name; /* optional */ + int event_pid; /* optional */ int (*parse_event)(struct tep_event *event, struct tep_record *record, struct list_head *jlist_head); /* optional */ };