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netfs: Generate enums from trace symbol mapping lists

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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.

Changes
=======
ver #3)
 - #undef EM and E_ at the end of the trace file[1].

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
cc: linux-cachefs@redhat.com

Link: https://lore.kernel.org/r/c2f4b3dc107b106e04c48f54945a12715cccfdf3.camel@redhat.com/ [1]
Link: https://lore.kernel.org/r/164622980839.3564931.5673300162465266909.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/164678192454.1200972.4428834328108580460.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/CALF+zOkB38_MB5QwNUtqTU4WjMaLUJ5+Piwsn3pMxkO3d4J7Kg@mail.gmail.com/ # v2
Link: https://lore.kernel.org/r/164692890614.2099075.12960653141802151575.stgit@warthog.procyon.org.uk/ # v3
This commit is contained in:
David Howells 2022-02-02 15:12:44 +00:00
parent e9b57aaae6
commit 5ac417d24c
1 changed files with 16 additions and 43 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

59
include/trace/events/netfs.h
View file

@ -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);
#endif
/*
* Export enum symbols via userspace.
@ -258,6 +229,8 @@ TRACE_EVENT(netfs_failure,
__entry->error)
);
#undef EM
#undef E_
#endif /* _TRACE_NETFS_H */
/* This part must be outside protection */