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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Andrew Morton <akpm@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Peter Zijlstra <peterz@infradead.org>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Davidlohr Bueso <davidlohr@hp.com>
Subject: linux-next: manual merge of the akpm-current tree with the tip tree
Date: Tue, 14 Jan 2014 15:53:31 +1100
Message-ID: <20140114155331.88d170d3c991b9465c23a537@canb.auug.org.au> (raw)

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Hi Andrew,

Today's linux-next merge of the akpm-current tree got a conflict in
kernel/futex.c between commit a52b89ebb6d4 ("futexes: Increase hash table
size for better performance") from the tip tree and commit 61beee6c76e5
("futex: switch to USER_DS for futex test") from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

diff --cc kernel/futex.c
index 3666aa0017ed,66d23727c6ab..000000000000
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@@ -63,7 -63,7 +63,8 @@@
  #include <linux/sched/rt.h>
  #include <linux/hugetlb.h>
  #include <linux/freezer.h>
 +#include <linux/bootmem.h>
+ #include <linux/uaccess.h>
  
  #include <asm/futex.h>
  
@@@ -2845,19 -2734,9 +2846,20 @@@ SYSCALL_DEFINE6(futex, u32 __user *, ua
  
  static int __init futex_init(void)
  {
+ 	mm_segment_t fs;
  	u32 curval;
 -	int i;
 +	unsigned long i;
 +
 +#if CONFIG_BASE_SMALL
 +	futex_hashsize = 16;
 +#else
 +	futex_hashsize = roundup_pow_of_two(256 * num_possible_cpus());
 +#endif
 +
 +	futex_queues = alloc_large_system_hash("futex", sizeof(*futex_queues),
 +					       futex_hashsize, 0,
 +					       futex_hashsize < 256 ? HASH_SMALL : 0,
 +					       NULL, NULL, futex_hashsize, futex_hashsize);
  
  	/*
  	 * This will fail and we want it. Some arch implementations do
@@@ -2869,10 -2748,13 +2871,13 @@@
  	 * implementation, the non-functional ones will return
  	 * -ENOSYS.
  	 */
+ 	fs = get_fs();
+ 	set_fs(USER_DS);
  	if (cmpxchg_futex_value_locked(&curval, NULL, 0, 0) == -EFAULT)
  		futex_cmpxchg_enabled = 1;
+ 	set_fs(fs);
  
 -	for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
 +	for (i = 0; i < futex_hashsize; i++) {
  		plist_head_init(&futex_queues[i].chain);
  		spin_lock_init(&futex_queues[i].lock);
  	}

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             reply index

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-14  4:53 Stephen Rothwell [this message]
2014-01-14  5:04 ` Davidlohr Bueso
2014-01-14 12:51 ` Peter Zijlstra
2014-01-14 13:17   ` Geert Uytterhoeven
2014-01-14 13:33     ` Peter Zijlstra
2014-01-14 16:19     ` H. Peter Anvin
2014-01-14 15:15   ` H. Peter Anvin
2014-01-14 15:20     ` Geert Uytterhoeven
2014-01-14 15:41       ` Peter Zijlstra
2014-01-14 15:48         ` H. Peter Anvin
  -- strict thread matches above, loose matches on Subject: below --
2019-10-31  5:43 Stephen Rothwell
2019-06-24 10:24 Stephen Rothwell
2019-05-01 11:10 Stephen Rothwell
2019-01-31  4:31 Stephen Rothwell
2018-08-20  4:32 Stephen Rothwell
2018-08-20 19:52 ` Andrew Morton
2018-03-23  5:59 Stephen Rothwell
2017-12-18  5:04 Stephen Rothwell
2017-11-10  4:33 Stephen Rothwell
2017-11-02  7:19 Stephen Rothwell
2017-08-22  6:57 Stephen Rothwell
2017-08-23  6:39 ` Vlastimil Babka
2017-08-11  7:53 Stephen Rothwell
2017-08-11  9:34 ` Peter Zijlstra
2017-08-11 10:48   ` Peter Zijlstra
2017-08-11 11:45   ` Stephen Rothwell
2017-08-11 11:56     ` Ingo Molnar
2017-08-11 12:17       ` Peter Zijlstra
2017-08-11 12:44         ` Ingo Molnar
2017-08-11 13:49           ` Stephen Rothwell
2017-08-11 14:04       ` Peter Zijlstra
2017-08-13  6:06         ` Nadav Amit
2017-08-13 12:50           ` Peter Zijlstra
2017-08-14  3:16             ` Minchan Kim
2017-08-14  5:07               ` Nadav Amit
2017-08-14  5:23                 ` Minchan Kim
2017-08-14  8:38                 ` Minchan Kim
2017-08-14 19:57                   ` Peter Zijlstra
2017-08-16  4:14                     ` Minchan Kim
2017-08-14 19:38                 ` Peter Zijlstra
2017-08-15  7:51                   ` Nadav Amit
2017-08-14  3:09         ` Minchan Kim
2017-08-14 18:54           ` Peter Zijlstra
2017-04-12  6:46 Stephen Rothwell
2017-04-12 20:53 ` Vlastimil Babka
2017-04-20  2:17   ` NeilBrown
2017-03-24  5:25 Stephen Rothwell
2017-02-17  4:40 Stephen Rothwell
2016-11-14  6:08 Stephen Rothwell
2016-07-29  4:14 Stephen Rothwell
2016-06-15  5:23 Stephen Rothwell
2016-06-18 19:39 ` Manfred Spraul
2016-04-29  6:12 Stephen Rothwell
2016-04-29  6:26 ` Ingo Molnar
2016-03-02  5:40 Stephen Rothwell
2016-02-26  5:07 Stephen Rothwell
2016-02-26 21:35 ` Andrew Morton
2016-02-19  4:09 Stephen Rothwell
2016-02-19 15:26 ` Ard Biesheuvel
2015-12-07  8:06 Stephen Rothwell
2015-10-02  4:21 Stephen Rothwell
2015-07-28  6:00 Stephen Rothwell
2015-07-29 17:12 ` Andrea Arcangeli
2015-07-29 17:47   ` Andy Lutomirski
2015-07-29 18:46     ` Thomas Gleixner
2015-07-30 15:38       ` Andrea Arcangeli
2015-07-29 23:06   ` Stephen Rothwell
2015-07-29 23:07     ` Thomas Gleixner
2015-09-07 23:35   ` Stephen Rothwell
2015-09-08 18:11     ` Linus Torvalds
2015-09-08 22:56       ` Stephen Rothwell
2015-09-08 23:03         ` Linus Torvalds
2015-09-08 23:21           ` Andrew Morton
2015-09-16  6:58             ` Geert Uytterhoeven
2015-06-04 12:07 Stephen Rothwell
2015-04-08  8:28 Stephen Rothwell
2015-04-08  8:25 Stephen Rothwell
2014-03-17  9:31 Stephen Rothwell
2014-03-17  9:36 ` Peter Zijlstra
2014-03-19 23:27   ` Andrew Morton
2014-01-07  6:00 Stephen Rothwell
2014-01-07  6:34 ` Tang Chen
2013-11-08  7:48 Stephen Rothwell
2013-11-08 18:58 ` Josh Triplett
2013-11-08 23:20   ` Stephen Rothwell
2013-11-09  0:19     ` Josh Triplett
2013-10-30  6:40 Stephen Rothwell

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