linux-kernel - Re: [PATCH 16/17] staging: lustre: discard linux-time.h

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Date:   Fri, 30 Mar 2018 20:03:43 +0100 (BST)
From:   James Simmons <jsimmons@...radead.org>
To:     NeilBrown <neilb@...e.com>
cc:     Oleg Drokin <oleg.drokin@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andreas Dilger <andreas.dilger@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH 16/17] staging: lustre: discard linux-time.h


> Very little is left in linux-time.h.
> Move CFS_TICK to libcfs.h discard the test.

Reviewed-by: James Simmons <jsimmons@...radead.org>
 
> Signed-off-by: NeilBrown <neilb@...e.com>
> ---
>  .../staging/lustre/include/linux/libcfs/libcfs.h   |    5 ++
>  .../lustre/include/linux/libcfs/linux/libcfs.h     |    1 
>  .../lustre/include/linux/libcfs/linux/linux-time.h |   66 --------------------
>  drivers/staging/lustre/lustre/ptlrpc/pinger.c      |    2 -
>  4 files changed, 6 insertions(+), 68 deletions(-)
>  delete mode 100644 drivers/staging/lustre/include/linux/libcfs/linux/linux-time.h
> 
> diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
> index 3d3fa52858e5..f183f31da387 100644
> --- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
> +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
> @@ -52,6 +52,11 @@
>  
>  #define LOWEST_BIT_SET(x)       ((x) & ~((x) - 1))
>  
> +/*
> + * One jiffy
> + */
> +#define CFS_TICK		(1UL)
> +
>  /*
>   * Lustre Error Checksum: calculates checksum
>   * of Hex number by XORing each bit.
> diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> index 30e333af8d0d..c39c34d74382 100644
> --- a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> +++ b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> @@ -80,7 +80,6 @@
>  #include <linux/uaccess.h>
>  #include <stdarg.h>
>  #include "linux-cpu.h"
> -#include "linux-time.h"
>  
>  #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
>  
> diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/linux-time.h b/drivers/staging/lustre/include/linux/libcfs/linux/linux-time.h
> deleted file mode 100644
> index ecdebccf2b44..000000000000
> --- a/drivers/staging/lustre/include/linux/libcfs/linux/linux-time.h
> +++ /dev/null
> @@ -1,66 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * GPL HEADER START
> - *
> - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 only,
> - * as published by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> - * General Public License version 2 for more details (a copy is included
> - * in the LICENSE file that accompanied this code).
> - *
> - * You should have received a copy of the GNU General Public License
> - * version 2 along with this program; If not, see
> - * http://www.gnu.org/licenses/gpl-2.0.html
> - *
> - * GPL HEADER END
> - */
> -/*
> - * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
> - * Use is subject to license terms.
> - */
> -/*
> - * This file is part of Lustre, http://www.lustre.org/
> - * Lustre is a trademark of Sun Microsystems, Inc.
> - *
> - * libcfs/include/libcfs/linux/linux-time.h
> - *
> - * Implementation of portable time API for Linux (kernel and user-level).
> - *
> - * Author: Nikita Danilov <nikita@...sterfs.com>
> - */
> -
> -#ifndef __LIBCFS_LINUX_LINUX_TIME_H__
> -#define __LIBCFS_LINUX_LINUX_TIME_H__
> -
> -#ifndef __LIBCFS_LIBCFS_H__
> -#error Do not #include this file directly. #include <linux/libcfs/libcfs.h> instead
> -#endif
> -
> -#define ONE_BILLION ((u_int64_t)1000000000)
> -#define ONE_MILLION 1000000
> -
> -#include <linux/module.h>
> -#include <linux/kernel.h>
> -#include <linux/time.h>
> -#include <asm/div64.h>
> -
> -/*
> - * post 2.5 kernels.
> - */
> -
> -#include <linux/jiffies.h>
> -
> -/*
> - * One jiffy
> - */
> -#define CFS_TICK		(1UL)
> -
> -#define CFS_DURATION_T	  "%ld"
> -
> -#endif /* __LIBCFS_LINUX_LINUX_TIME_H__ */
> diff --git a/drivers/staging/lustre/lustre/ptlrpc/pinger.c b/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> index 3f17c673d1b8..89eef8ec7df4 100644
> --- a/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> +++ b/drivers/staging/lustre/lustre/ptlrpc/pinger.c
> @@ -251,7 +251,7 @@ static void ptlrpc_pinger_main(struct work_struct *ws)
>  		 * we will SKIP the next ping at next_ping, and the
>  		 * ping will get sent 2 timeouts from now!  Beware.
>  		 */
> -		CDEBUG(D_INFO, "next wakeup in " CFS_DURATION_T " (%ld)\n",
> +		CDEBUG(D_INFO, "next wakeup in %ld (%ld)\n",
>  		       time_to_next_wake,
>  		       this_ping + PING_INTERVAL * HZ);
>  	} while (time_to_next_wake <= 0);
> 
> 
>