linux-kernel - Re: [PATCH 07/12] tools headers UAPI: Sync sched.h with the kernel

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Date:   Thu, 1 Aug 2019 21:55:06 +0200
From:   Christian Brauner <christian@...uner.io>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Luis Cláudio Gonçalves 
        <lclaudio@...hat.com>, Patrick Bellasi <patrick.bellasi@....com>
Subject: Re: [PATCH 07/12] tools headers UAPI: Sync sched.h with the kernel

On Mon, Jul 29, 2019 at 06:14:54PM -0300, Arnaldo Carvalho de Melo wrote:
> From: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> To get the changes in:
> 
>   a509a7cd7974 ("sched/uclamp: Extend sched_setattr() to support utilization clamping")
>   1d6362fa0cfc ("sched/core: Allow sched_setattr() to use the current policy")
>   7f192e3cd316 ("fork: add clone3")
> 
> And silence this perf build warning:
> 
>   Warning: Kernel ABI header at 'tools/include/uapi/linux/sched.h' differs from latest version at 'include/uapi/linux/sched.h'
>   diff -u tools/include/uapi/linux/sched.h include/uapi/linux/sched.h
> 
> No changes in tools/ due to the above.
> 
> Cc: Adrian Hunter <adrian.hunter@...el.com>
> Cc: Christian Brauner <christian@...uner.io>
> Cc: Jiri Olsa <jolsa@...nel.org>
> Cc: Luis Cláudio Gonçalves <lclaudio@...hat.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Patrick Bellasi <patrick.bellasi@....com>
> Link: https://lkml.kernel.org/n/tip-mtrpsjrux5hgyr5uf8l1aa46@git.kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

Thanks!
For the struct clone_args addition:
Acked-by: Christian Brauner <christian.brauner@...ntu.com>

> ---
>  tools/include/uapi/linux/sched.h | 30 +++++++++++++++++++++++++++++-
>  1 file changed, 29 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/include/uapi/linux/sched.h b/tools/include/uapi/linux/sched.h
> index ed4ee170bee2..b3105ac1381a 100644
> --- a/tools/include/uapi/linux/sched.h
> +++ b/tools/include/uapi/linux/sched.h
> @@ -2,6 +2,8 @@
>  #ifndef _UAPI_LINUX_SCHED_H
>  #define _UAPI_LINUX_SCHED_H
>  
> +#include <linux/types.h>
> +
>  /*
>   * cloning flags:
>   */
> @@ -31,6 +33,20 @@
>  #define CLONE_NEWNET		0x40000000	/* New network namespace */
>  #define CLONE_IO		0x80000000	/* Clone io context */
>  
> +/*
> + * Arguments for the clone3 syscall
> + */
> +struct clone_args {
> +	__aligned_u64 flags;
> +	__aligned_u64 pidfd;
> +	__aligned_u64 child_tid;
> +	__aligned_u64 parent_tid;
> +	__aligned_u64 exit_signal;
> +	__aligned_u64 stack;
> +	__aligned_u64 stack_size;
> +	__aligned_u64 tls;
> +};
> +
>  /*
>   * Scheduling policies
>   */
> @@ -51,9 +67,21 @@
>  #define SCHED_FLAG_RESET_ON_FORK	0x01
>  #define SCHED_FLAG_RECLAIM		0x02
>  #define SCHED_FLAG_DL_OVERRUN		0x04
> +#define SCHED_FLAG_KEEP_POLICY		0x08
> +#define SCHED_FLAG_KEEP_PARAMS		0x10
> +#define SCHED_FLAG_UTIL_CLAMP_MIN	0x20
> +#define SCHED_FLAG_UTIL_CLAMP_MAX	0x40
> +
> +#define SCHED_FLAG_KEEP_ALL	(SCHED_FLAG_KEEP_POLICY | \
> +				 SCHED_FLAG_KEEP_PARAMS)
> +
> +#define SCHED_FLAG_UTIL_CLAMP	(SCHED_FLAG_UTIL_CLAMP_MIN | \
> +				 SCHED_FLAG_UTIL_CLAMP_MAX)
>  
>  #define SCHED_FLAG_ALL	(SCHED_FLAG_RESET_ON_FORK	| \
>  			 SCHED_FLAG_RECLAIM		| \
> -			 SCHED_FLAG_DL_OVERRUN)
> +			 SCHED_FLAG_DL_OVERRUN		| \
> +			 SCHED_FLAG_KEEP_ALL		| \
> +			 SCHED_FLAG_UTIL_CLAMP)
>  
>  #endif /* _UAPI_LINUX_SCHED_H */
> -- 
> 2.21.0
>