* [PATCH] tracing: Fix warning on variable 'struct trace_array'
@ 2022-11-07 16:05 Aashish Sharma
2022-11-07 17:17 ` Guenter Roeck
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Aashish Sharma @ 2022-11-07 16:05 UTC (permalink / raw)
To: Steven Rostedt, Masami Hiramatsu, Martin K. Petersen
Cc: Arun Easi, linux-kernel, Aashish Sharma
Move the declaration of 'struct trace_array' out of #ifdef
CONFIG_TRACING block, to fix the following warning when CONFIG_TRACING
is not set:
>> include/linux/trace.h:63:45: warning: 'struct trace_array' declared
inside parameter list will not be visible outside of this definition or
declaration
Fixes: 1a77dd1c2bb5 ("scsi: tracing: Fix compile error in trace_array calls when TRACING is disabled")
Cc: Arun Easi <aeasi@marvell.com>
Signed-off-by: Aashish Sharma <shraash@google.com>
---
include/linux/trace.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/trace.h b/include/linux/trace.h
index b5e16e438448..80ffda871749 100644
--- a/include/linux/trace.h
+++ b/include/linux/trace.h
@@ -26,13 +26,13 @@ struct trace_export {
int flags;
};
+struct trace_array;
+
#ifdef CONFIG_TRACING
int register_ftrace_export(struct trace_export *export);
int unregister_ftrace_export(struct trace_export *export);
-struct trace_array;
-
void trace_printk_init_buffers(void);
__printf(3, 4)
int trace_array_printk(struct trace_array *tr, unsigned long ip,
--
2.38.1.431.g37b22c650d-goog
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] tracing: Fix warning on variable 'struct trace_array'
2022-11-07 16:05 [PATCH] tracing: Fix warning on variable 'struct trace_array' Aashish Sharma
@ 2022-11-07 17:17 ` Guenter Roeck
2022-11-11 12:48 ` Masami Hiramatsu
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Guenter Roeck @ 2022-11-07 17:17 UTC (permalink / raw)
To: Aashish Sharma
Cc: Steven Rostedt, Masami Hiramatsu, Martin K. Petersen, Arun Easi,
linux-kernel
On Mon, Nov 07, 2022 at 09:35:56PM +0530, Aashish Sharma wrote:
> Move the declaration of 'struct trace_array' out of #ifdef
> CONFIG_TRACING block, to fix the following warning when CONFIG_TRACING
> is not set:
>
> >> include/linux/trace.h:63:45: warning: 'struct trace_array' declared
> inside parameter list will not be visible outside of this definition or
> declaration
>
> Fixes: 1a77dd1c2bb5 ("scsi: tracing: Fix compile error in trace_array calls when TRACING is disabled")
> Cc: Arun Easi <aeasi@marvell.com>
> Signed-off-by: Aashish Sharma <shraash@google.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> ---
> include/linux/trace.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/trace.h b/include/linux/trace.h
> index b5e16e438448..80ffda871749 100644
> --- a/include/linux/trace.h
> +++ b/include/linux/trace.h
> @@ -26,13 +26,13 @@ struct trace_export {
> int flags;
> };
>
> +struct trace_array;
> +
> #ifdef CONFIG_TRACING
>
> int register_ftrace_export(struct trace_export *export);
> int unregister_ftrace_export(struct trace_export *export);
>
> -struct trace_array;
> -
> void trace_printk_init_buffers(void);
> __printf(3, 4)
> int trace_array_printk(struct trace_array *tr, unsigned long ip,
> --
> 2.38.1.431.g37b22c650d-goog
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] tracing: Fix warning on variable 'struct trace_array'
2022-11-07 16:05 [PATCH] tracing: Fix warning on variable 'struct trace_array' Aashish Sharma
2022-11-07 17:17 ` Guenter Roeck
@ 2022-11-11 12:48 ` Masami Hiramatsu
2022-11-16 0:16 ` [EXT] " Arun Easi
2022-11-17 2:53 ` Steven Rostedt
3 siblings, 0 replies; 5+ messages in thread
From: Masami Hiramatsu @ 2022-11-11 12:48 UTC (permalink / raw)
To: Aashish Sharma
Cc: Steven Rostedt, Martin K. Petersen, Arun Easi, linux-kernel,
Linux Trace Kernel
On Mon, 7 Nov 2022 21:35:56 +0530
Aashish Sharma <shraash@google.com> wrote:
> Move the declaration of 'struct trace_array' out of #ifdef
> CONFIG_TRACING block, to fix the following warning when CONFIG_TRACING
> is not set:
>
> >> include/linux/trace.h:63:45: warning: 'struct trace_array' declared
> inside parameter list will not be visible outside of this definition or
> declaration
>
This looks good to me.
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Thank you!
> Fixes: 1a77dd1c2bb5 ("scsi: tracing: Fix compile error in trace_array calls when TRACING is disabled")
> Cc: Arun Easi <aeasi@marvell.com>
> Signed-off-by: Aashish Sharma <shraash@google.com>
> ---
> include/linux/trace.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/trace.h b/include/linux/trace.h
> index b5e16e438448..80ffda871749 100644
> --- a/include/linux/trace.h
> +++ b/include/linux/trace.h
> @@ -26,13 +26,13 @@ struct trace_export {
> int flags;
> };
>
> +struct trace_array;
> +
> #ifdef CONFIG_TRACING
>
> int register_ftrace_export(struct trace_export *export);
> int unregister_ftrace_export(struct trace_export *export);
>
> -struct trace_array;
> -
> void trace_printk_init_buffers(void);
> __printf(3, 4)
> int trace_array_printk(struct trace_array *tr, unsigned long ip,
> --
> 2.38.1.431.g37b22c650d-goog
>
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [EXT] [PATCH] tracing: Fix warning on variable 'struct trace_array'
2022-11-07 16:05 [PATCH] tracing: Fix warning on variable 'struct trace_array' Aashish Sharma
2022-11-07 17:17 ` Guenter Roeck
2022-11-11 12:48 ` Masami Hiramatsu
@ 2022-11-16 0:16 ` Arun Easi
2022-11-17 2:53 ` Steven Rostedt
3 siblings, 0 replies; 5+ messages in thread
From: Arun Easi @ 2022-11-16 0:16 UTC (permalink / raw)
To: Aashish Sharma
Cc: Steven Rostedt, Masami Hiramatsu, Martin K. Petersen, linux-kernel
On Mon, 7 Nov 2022, 8:05am, Aashish Sharma wrote:
>
> ----------------------------------------------------------------------
> Move the declaration of 'struct trace_array' out of #ifdef
> CONFIG_TRACING block, to fix the following warning when CONFIG_TRACING
> is not set:
>
> >> include/linux/trace.h:63:45: warning: 'struct trace_array' declared
> inside parameter list will not be visible outside of this definition or
> declaration
>
> Fixes: 1a77dd1c2bb5 ("scsi: tracing: Fix compile error in trace_array calls when TRACING is disabled")
> Cc: Arun Easi <aeasi@marvell.com>
> Signed-off-by: Aashish Sharma <shraash@google.com>
> ---
> include/linux/trace.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/trace.h b/include/linux/trace.h
> index b5e16e438448..80ffda871749 100644
> --- a/include/linux/trace.h
> +++ b/include/linux/trace.h
> @@ -26,13 +26,13 @@ struct trace_export {
> int flags;
> };
>
> +struct trace_array;
> +
> #ifdef CONFIG_TRACING
>
> int register_ftrace_export(struct trace_export *export);
> int unregister_ftrace_export(struct trace_export *export);
>
> -struct trace_array;
> -
> void trace_printk_init_buffers(void);
> __printf(3, 4)
> int trace_array_printk(struct trace_array *tr, unsigned long ip,
>
Looks good. Thanks!
I was wondering why I did not see this when I compiled the kernel without
TRACING (for 1a77dd1c2bb5). Apparently, I had linux/trace_events.h
included, which does exactly this. Anyway, makes sense to move this
outside the #ifdef block.
Regards,
-Arun
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] tracing: Fix warning on variable 'struct trace_array'
2022-11-07 16:05 [PATCH] tracing: Fix warning on variable 'struct trace_array' Aashish Sharma
` (2 preceding siblings ...)
2022-11-16 0:16 ` [EXT] " Arun Easi
@ 2022-11-17 2:53 ` Steven Rostedt
3 siblings, 0 replies; 5+ messages in thread
From: Steven Rostedt @ 2022-11-17 2:53 UTC (permalink / raw)
To: Aashish Sharma
Cc: Masami Hiramatsu, Martin K. Petersen, Arun Easi, linux-kernel
On Mon, 7 Nov 2022 21:35:56 +0530
Aashish Sharma <shraash@google.com> wrote:
> Move the declaration of 'struct trace_array' out of #ifdef
> CONFIG_TRACING block, to fix the following warning when CONFIG_TRACING
> is not set:
>
> >> include/linux/trace.h:63:45: warning: 'struct trace_array' declared
> inside parameter list will not be visible outside of this definition or
> declaration
>
> Fixes: 1a77dd1c2bb5 ("scsi: tracing: Fix compile error in trace_array calls when TRACING is disabled")
> Cc: Arun Easi <aeasi@marvell.com>
> Signed-off-by: Aashish Sharma <shraash@google.com>
>
Queued. Thanks Aashish!
-- Steve
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-11-17 2:53 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2022-11-07 16:05 [PATCH] tracing: Fix warning on variable 'struct trace_array' Aashish Sharma
2022-11-07 17:17 ` Guenter Roeck
2022-11-11 12:48 ` Masami Hiramatsu
2022-11-16 0:16 ` [EXT] " Arun Easi
2022-11-17 2:53 ` Steven Rostedt
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