From patchwork Mon Nov 29 14:30:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 516868 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 42E78C43219 for ; Mon, 29 Nov 2021 14:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378425AbhK2Ogv (ORCPT ); Mon, 29 Nov 2021 09:36:51 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:42905 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378435AbhK2Oet (ORCPT ); Mon, 29 Nov 2021 09:34:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638196291; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mmTuam1LC3vhKbcuZg/3uteq0NGebX5xMZYEWsNfvAI=; b=RdCNSNzPkPVk4+Rld0mL3okl4xV6I0u3PQoCDdJ1yhMObyIbS/DwMZ11qCLFS/fD3bvbQw RZd7MJeP3DE13gyYkUhkohK/Nj4U+t8oqsHyGeofKr2h6CHs5V5JX8xNskXq411NKVc9AT nSLhJ4zsmyVcwnL53b4zYbBQFU/7iQQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-366-RUrs-z0EO-y4MetsSVuObA-1; Mon, 29 Nov 2021 09:31:26 -0500 X-MC-Unique: RUrs-z0EO-y4MetsSVuObA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 64C9F801B25; Mon, 29 Nov 2021 14:31:00 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.25]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2667F19724; Mon, 29 Nov 2021 14:30:57 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 33/64] cachefiles: Add a couple of tracepoints for logging errors From: David Howells To: linux-cachefs@redhat.com Cc: dhowells@redhat.com, Trond Myklebust , Anna Schumaker , Steve French , Dominique Martinet , Jeff Layton , Matthew Wilcox , Alexander Viro , Omar Sandoval , Linus Torvalds , linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 29 Nov 2021 14:30:56 +0000 Message-ID: <163819625632.215744.17907340966178411033.stgit@warthog.procyon.org.uk> In-Reply-To: <163819575444.215744.318477214576928110.stgit@warthog.procyon.org.uk> References: <163819575444.215744.318477214576928110.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.23 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Add two trace points to log errors, one for vfs operations like mkdir or create, and one for I/O operations, like read, write or truncate. Also add the beginnings of a struct that is going to represent a data file and place a debugging ID in it for the tracepoints to record. Signed-off-by: David Howells cc: linux-cachefs@redhat.com --- fs/cachefiles/internal.h | 1 include/trace/events/cachefiles.h | 94 +++++++++++++++++++++++++++++++++++++ 2 files changed, 95 insertions(+) diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 1f2fea902d3e..b51146a29aca 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -62,6 +62,7 @@ struct cachefiles_cache { char *tag; /* cache binding tag */ }; +#include /* * error_inject.c diff --git a/include/trace/events/cachefiles.h b/include/trace/events/cachefiles.h index 5ee0aabb20be..9bd5a8a60801 100644 --- a/include/trace/events/cachefiles.h +++ b/include/trace/events/cachefiles.h @@ -18,11 +18,49 @@ #ifndef __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY #define __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY +enum cachefiles_error_trace { + cachefiles_trace_fallocate_error, + cachefiles_trace_getxattr_error, + cachefiles_trace_link_error, + cachefiles_trace_lookup_error, + cachefiles_trace_mkdir_error, + cachefiles_trace_notify_change_error, + cachefiles_trace_open_error, + cachefiles_trace_read_error, + cachefiles_trace_remxattr_error, + cachefiles_trace_rename_error, + cachefiles_trace_seek_error, + cachefiles_trace_setxattr_error, + cachefiles_trace_statfs_error, + cachefiles_trace_tmpfile_error, + cachefiles_trace_trunc_error, + cachefiles_trace_unlink_error, + cachefiles_trace_write_error, +}; + #endif /* * Define enum -> string mappings for display. */ +#define cachefiles_error_traces \ + EM(cachefiles_trace_fallocate_error, "fallocate") \ + EM(cachefiles_trace_getxattr_error, "getxattr") \ + EM(cachefiles_trace_link_error, "link") \ + EM(cachefiles_trace_lookup_error, "lookup") \ + EM(cachefiles_trace_mkdir_error, "mkdir") \ + EM(cachefiles_trace_notify_change_error, "notify_change") \ + EM(cachefiles_trace_open_error, "open") \ + EM(cachefiles_trace_read_error, "read") \ + EM(cachefiles_trace_remxattr_error, "remxattr") \ + EM(cachefiles_trace_rename_error, "rename") \ + EM(cachefiles_trace_seek_error, "seek") \ + EM(cachefiles_trace_setxattr_error, "setxattr") \ + EM(cachefiles_trace_statfs_error, "statfs") \ + EM(cachefiles_trace_tmpfile_error, "tmpfile") \ + EM(cachefiles_trace_trunc_error, "trunc") \ + EM(cachefiles_trace_unlink_error, "unlink") \ + E_(cachefiles_trace_write_error, "write") /* @@ -33,6 +71,8 @@ #define EM(a, b) TRACE_DEFINE_ENUM(a); #define E_(a, b) TRACE_DEFINE_ENUM(a); +cachefiles_error_traces; + /* * Now redefine the EM() and E_() macros to map the enums to the strings that * will be printed in the output. @@ -43,6 +83,60 @@ #define E_(a, b) { a, b } +TRACE_EVENT(cachefiles_vfs_error, + TP_PROTO(struct cachefiles_object *obj, struct inode *backer, + int error, enum cachefiles_error_trace where), + + TP_ARGS(obj, backer, error, where), + + TP_STRUCT__entry( + __field(unsigned int, obj ) + __field(unsigned int, backer ) + __field(enum cachefiles_error_trace, where ) + __field(short, error ) + ), + + TP_fast_assign( + __entry->obj = obj ? obj->debug_id : 0; + __entry->backer = backer->i_ino; + __entry->error = error; + __entry->where = where; + ), + + TP_printk("o=%08x b=%08x %s e=%d", + __entry->obj, + __entry->backer, + __print_symbolic(__entry->where, cachefiles_error_traces), + __entry->error) + ); + +TRACE_EVENT(cachefiles_io_error, + TP_PROTO(struct cachefiles_object *obj, struct inode *backer, + int error, enum cachefiles_error_trace where), + + TP_ARGS(obj, backer, error, where), + + TP_STRUCT__entry( + __field(unsigned int, obj ) + __field(unsigned int, backer ) + __field(enum cachefiles_error_trace, where ) + __field(short, error ) + ), + + TP_fast_assign( + __entry->obj = obj ? obj->debug_id : 0; + __entry->backer = backer->i_ino; + __entry->error = error; + __entry->where = where; + ), + + TP_printk("o=%08x b=%08x %s e=%d", + __entry->obj, + __entry->backer, + __print_symbolic(__entry->where, cachefiles_error_traces), + __entry->error) + ); + #endif /* _TRACE_CACHEFILES_H */ /* This part must be outside protection */