Hi Philippe,
Some additional feedback:
The patch title could be changed to:
"tracing: Remove duplicate `type` field from regmap `regcache_sync` trace event"
to clarify that this belongs to tracing.
----- On Nov 23, 2020, at 11:15 AM, Philippe Duplessis-Guindon pduplessis@xxxxxxxxxxxx wrote:
> I had an error saying that `regcache_sync` had 2 fields named `type` while using
> libtraceevent. This was the format of this event:
Please use the present rather than past when writing a commit message.
>
> $ sudo cat /sys/kernel/debug/tracing/events/regmap/regcache_sync/format
> name: regcache_sync
> ID: 1216
> format:
> field:unsigned short common_type; offset:0; size:2; signed:0;
> field:unsigned char common_flags; offset:2; size:1; signed:0;
> field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
> field:int common_pid; offset:4; size:4; signed:1;
>
> field:__data_loc char[] name; offset:8; size:4; signed:1;
> field:__data_loc char[] status; offset:12; size:4; signed:1;
> field:__data_loc char[] type; offset:16; size:4; signed:1;
> field:int type; offset:20; size:4; signed:1;
>
> print fmt: "%s type=%s status=%s", __get_str(name), __get_str(type),
> __get_str(status)
>
> Erase the `int field` type, who was not assigned. This field was introduce by
who -> which
was introduce -> was introduced
Ideally you should use git blame to identify which commit introduced this issue.
e.g.:
git blame drivers/base/regmap/trace.h
[...]
593600890110c include/trace/events/regmap.h (Dimitris Papastamos 2011-09-19 14:34:04 +0100 134) __assign_str(status, status);
593600890110c include/trace/events/regmap.h (Dimitris Papastamos 2011-09-19 14:34:04 +0100 135) __assign_str(type, type);
commit 593600890110c02eb471cf844649dee213870416
Author: Dimitris Papastamos <dp@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Mon Sep 19 14:34:04 2011 +0100
regmap: Add the regcache_sync trace event
This information can be added to the commit message as:
Fixes commit 593600890110c ("regmap: Add the regcache_sync trace event")
Thanks,
Mathieu
> mistake and this commit removes it.
>
> This is the format of this event after the fix:
>
> $ sudo cat /sys/kernel/debug/tracing/events/regmap/regcache_sync/format
> name: regcache_sync
> ID: 1266
> format:
> field:unsigned short common_type; offset:0; size:2; signed:0;
> field:unsigned char common_flags; offset:2; size:1; signed:0;
> field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
> field:int common_pid; offset:4; size:4; signed:1;
>
> field:__data_loc char[] name; offset:8; size:4; signed:1;
> field:__data_loc char[] status; offset:12; size:4; signed:1;
> field:__data_loc char[] type; offset:16; size:4; signed:1;
>
> print fmt: "%s type=%s status=%s", __get_str(name), __get_str(type),
> __get_str(status)
>
> Signed-off-by: Philippe Duplessis-Guindon <pduplessis@xxxxxxxxxxxx>
> ---
> drivers/base/regmap/trace.h | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/base/regmap/trace.h b/drivers/base/regmap/trace.h
> index d4066fa079ab..9abee14df9ee 100644
> --- a/drivers/base/regmap/trace.h
> +++ b/drivers/base/regmap/trace.h
> @@ -126,7 +126,6 @@ TRACE_EVENT(regcache_sync,
> __string( name, regmap_name(map) )
> __string( status, status )
> __string( type, type )
> - __field( int, type )
> ),
>
> TP_fast_assign(
> --
> 2.25.1
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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