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From: Paul Gortmaker <paul.gortmaker@windriver.com>
To: linux-kernel@vger.kernel.org
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org
Subject: [PATCH 01/11] mm: replace module_init usages with subsys_initcall in nommu.c
Date: Sun, 31 May 2015 20:54:02 -0400	[thread overview]
Message-ID: <1433120052-18281-2-git-send-email-paul.gortmaker@windriver.com> (raw)
In-Reply-To: <1433120052-18281-1-git-send-email-paul.gortmaker@windriver.com>

Compiling some arm/m68k configs with "# CONFIG_MMU is not set" reveals
two more instances of module_init being used for code that can't
possibly be modular, as CONFIG_MMU is either on or off.

We replace them with subsys_initcall as per what was done in other
mmu-enabled code.

Note that direct use of __initcall is discouraged, vs.  one of the
priority categorized subgroups.  As __initcall gets mapped onto
device_initcall, our use of subsys_initcall (which makes sense for these
files) will thus change this registration from level 6-device to level
4-subsys (i.e.  slightly earlier).

One might think that core_initcall (l2) or postcore_initcall (l3) would
be more appropriate for anything in mm/ but if we look at the actual init
functions themselves, we see they are just sysctl setup stuff, and
hence the choice of subsys_initcall (l4) seems reasonable.  At the same
time it minimizes the risk of changing the priority too drastically all
at once.  We can adjust further in the future.

Also, a couple instances of missing ";" at EOL are fixed.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
 mm/nommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/nommu.c b/mm/nommu.c
index e544508e2a4b..e7b24dcec505 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -2157,7 +2157,7 @@ static int __meminit init_user_reserve(void)
 	sysctl_user_reserve_kbytes = min(free_kbytes / 32, 1UL << 17);
 	return 0;
 }
-module_init(init_user_reserve)
+subsys_initcall(init_user_reserve);
 
 /*
  * Initialise sysctl_admin_reserve_kbytes.
@@ -2178,4 +2178,4 @@ static int __meminit init_admin_reserve(void)
 	sysctl_admin_reserve_kbytes = min(free_kbytes / 32, 1UL << 13);
 	return 0;
 }
-module_init(init_admin_reserve)
+subsys_initcall(init_admin_reserve);
-- 
2.2.1

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  reply	other threads:[~2015-06-01  0:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-01  0:54 [PATCH 00/11] Replace module_init with an alternate initcall in non modules Paul Gortmaker
2015-06-01  0:54 ` Paul Gortmaker [this message]
2015-06-01  0:54 ` [PATCH 09/11] mm/page_owner.c: use late_initcall to hook in enabling Paul Gortmaker

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