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[68.20.15.154]) by smtp.gmail.com with ESMTPSA id x12-20020a05620a14ac00b0060deaee7a21sm1055813qkj.51.2022.03.09.07.30.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Mar 2022 07:30:37 -0800 (PST) Message-ID: Subject: Re: [PATCH v2 02/19] netfs: Generate enums from trace symbol mapping lists From: Jeff Layton To: David Howells , linux-cachefs@redhat.com Cc: Anna Schumaker , Steve French , Dominique Martinet , David Wysochanski , Ilya Dryomov , Jeffle Xu , 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: Wed, 09 Mar 2022 10:30:36 -0500 In-Reply-To: <164678192454.1200972.4428834328108580460.stgit@warthog.procyon.org.uk> References: <164678185692.1200972.597611902374126174.stgit@warthog.procyon.org.uk> <164678192454.1200972.4428834328108580460.stgit@warthog.procyon.org.uk> Content-Type: text/plain; charset="ISO-8859-15" User-Agent: Evolution 3.42.4 (3.42.4-1.fc35) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2022-03-08 at 23:25 +0000, David Howells wrote: > netfs has a number of lists of symbols for use in tracing, listed in an > enum and then listed again in a symbol->string mapping for use with > __print_symbolic(). This is, however, redundant. > > Instead, use the symbol->string mapping list to also generate the enum > where the enum is in the same file. > > Signed-off-by: David Howells > cc: linux-cachefs@redhat.com > > Link: https://lore.kernel.org/r/164622980839.3564931.5673300162465266909.stgit@warthog.procyon.org.uk/ # v1 > --- > > include/trace/events/netfs.h | 57 ++++++++++-------------------------------- > 1 file changed, 14 insertions(+), 43 deletions(-) > > diff --git a/include/trace/events/netfs.h b/include/trace/events/netfs.h > index e6f4ebbb4c69..88d9a74dd346 100644 > --- a/include/trace/events/netfs.h > +++ b/include/trace/events/netfs.h > @@ -15,49 +15,6 @@ > /* > * Define enums for tracing information. > */ > -#ifndef __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY > -#define __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY > - > -enum netfs_read_trace { > - netfs_read_trace_expanded, > - netfs_read_trace_readahead, > - netfs_read_trace_readpage, > - netfs_read_trace_write_begin, > -}; > - > -enum netfs_rreq_trace { > - netfs_rreq_trace_assess, > - netfs_rreq_trace_done, > - netfs_rreq_trace_free, > - netfs_rreq_trace_resubmit, > - netfs_rreq_trace_unlock, > - netfs_rreq_trace_unmark, > - netfs_rreq_trace_write, > -}; > - > -enum netfs_sreq_trace { > - netfs_sreq_trace_download_instead, > - netfs_sreq_trace_free, > - netfs_sreq_trace_prepare, > - netfs_sreq_trace_resubmit_short, > - netfs_sreq_trace_submit, > - netfs_sreq_trace_terminated, > - netfs_sreq_trace_write, > - netfs_sreq_trace_write_skip, > - netfs_sreq_trace_write_term, > -}; > - > -enum netfs_failure { > - netfs_fail_check_write_begin, > - netfs_fail_copy_to_cache, > - netfs_fail_read, > - netfs_fail_short_readpage, > - netfs_fail_short_write_begin, > - netfs_fail_prepare_write, > -}; > - > -#endif > - > #define netfs_read_traces \ > EM(netfs_read_trace_expanded, "EXPANDED ") \ > EM(netfs_read_trace_readahead, "READAHEAD") \ > @@ -98,6 +55,20 @@ enum netfs_failure { > EM(netfs_fail_short_write_begin, "short-write-begin") \ > E_(netfs_fail_prepare_write, "prep-write") > > +#ifndef __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY > +#define __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY > + > +#undef EM > +#undef E_ > +#define EM(a, b) a, > +#define E_(a, b) a > + > +enum netfs_read_trace { netfs_read_traces } __mode(byte); > +enum netfs_rreq_trace { netfs_rreq_traces } __mode(byte); > +enum netfs_sreq_trace { netfs_sreq_traces } __mode(byte); > +enum netfs_failure { netfs_failures } __mode(byte); > + Should you undef EM and E_ here after creating these? > +#endif > > /* > * Export enum symbols via userspace. > > Looks fine otherwise: Acked-by: Jeff Layton