All of lore.kernel.org
 help / color / mirror / Atom feed
From: Baoquan He <bhe@redhat.com>
To: mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, corbet@lwn.net,
	linux-doc@vger.kernel.org, Baoquan He <bhe@redhat.com>
Subject: [PATCH] mm/page_alloc: Deprecate kernelcore=nn and movable_core=
Date: Tue, 17 Jul 2018 21:18:37 +0800	[thread overview]
Message-ID: <20180717131837.18411-1-bhe@redhat.com> (raw)

We can still use 'kernelcore=mirror' or 'movable_node' for the usage
of hotplug and movable zone. If somebody shows up with a valid usecase
we can reconsider.

Suggested-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Baoquan He <bhe@redhat.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 2 ++
 mm/page_alloc.c                                 | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index efc7aa7a0670..1e22c49866a2 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1855,6 +1855,7 @@
 	keepinitrd	[HW,ARM]
 
 	kernelcore=	[KNL,X86,IA-64,PPC]
+			[Usage of kernelcore=nn[KMGTPE] | nn% is deprecated]
 			Format: nn[KMGTPE] | nn% | "mirror"
 			This parameter specifies the amount of memory usable by
 			the kernel for non-movable allocations.  The requested
@@ -2395,6 +2396,7 @@
 			reporting absolute coordinates, such as tablets
 
 	movablecore=	[KNL,X86,IA-64,PPC]
+			[Deprecated]
 			Format: nn[KMGTPE] | nn%
 			This parameter is the complement to kernelcore=, it
 			specifies the amount of memory used for migratable
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 1521100f1e63..86cf05f48b5f 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6899,6 +6899,8 @@ static int __init cmdline_parse_kernelcore(char *p)
 		return 0;
 	}
 
+	pr_warn("Only kernelcore=mirror supported, "
+		"usage of kernelcore=nn[KMGTPE]|nn%% is deprecated.\n");
 	return cmdline_parse_core(p, &required_kernelcore,
 				  &required_kernelcore_percent);
 }
@@ -6909,6 +6911,7 @@ static int __init cmdline_parse_kernelcore(char *p)
  */
 static int __init cmdline_parse_movablecore(char *p)
 {
+	pr_warn("Option movablecore= is deprecated.\n");
 	return cmdline_parse_core(p, &required_movablecore,
 				  &required_movablecore_percent);
 }
-- 
2.13.6


WARNING: multiple messages have this Message-ID (diff)
From: Baoquan He <bhe@redhat.com>
To: mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, corbet@lwn.net,
	linux-doc@vger.kernel.org, Baoquan He <bhe@redhat.com>
Subject: [PATCH] mm/page_alloc: Deprecate kernelcore=nn and movable_core=
Date: Tue, 17 Jul 2018 21:18:37 +0800	[thread overview]
Message-ID: <20180717131837.18411-1-bhe@redhat.com> (raw)

We can still use 'kernelcore=mirror' or 'movable_node' for the usage
of hotplug and movable zone. If somebody shows up with a valid usecase
we can reconsider.

Suggested-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Baoquan He <bhe@redhat.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 2 ++
 mm/page_alloc.c                                 | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index efc7aa7a0670..1e22c49866a2 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1855,6 +1855,7 @@
 	keepinitrd	[HW,ARM]
 
 	kernelcore=	[KNL,X86,IA-64,PPC]
+			[Usage of kernelcore=nn[KMGTPE] | nn% is deprecated]
 			Format: nn[KMGTPE] | nn% | "mirror"
 			This parameter specifies the amount of memory usable by
 			the kernel for non-movable allocations.  The requested
@@ -2395,6 +2396,7 @@
 			reporting absolute coordinates, such as tablets
 
 	movablecore=	[KNL,X86,IA-64,PPC]
+			[Deprecated]
 			Format: nn[KMGTPE] | nn%
 			This parameter is the complement to kernelcore=, it
 			specifies the amount of memory used for migratable
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 1521100f1e63..86cf05f48b5f 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6899,6 +6899,8 @@ static int __init cmdline_parse_kernelcore(char *p)
 		return 0;
 	}
 
+	pr_warn("Only kernelcore=mirror supported, "
+		"usage of kernelcore=nn[KMGTPE]|nn%% is deprecated.\n");
 	return cmdline_parse_core(p, &required_kernelcore,
 				  &required_kernelcore_percent);
 }
@@ -6909,6 +6911,7 @@ static int __init cmdline_parse_kernelcore(char *p)
  */
 static int __init cmdline_parse_movablecore(char *p)
 {
+	pr_warn("Option movablecore= is deprecated.\n");
 	return cmdline_parse_core(p, &required_movablecore,
 				  &required_movablecore_percent);
 }
-- 
2.13.6

--
To unsubscribe from this list: send the line "unsubscribe linux-doc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

             reply	other threads:[~2018-07-17 13:18 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-17 13:18 Baoquan He [this message]
2018-07-17 13:18 ` [PATCH] mm/page_alloc: Deprecate kernelcore=nn and movable_core= Baoquan He
2018-07-17 13:31 ` Michal Hocko
2018-07-17 13:31   ` Michal Hocko
2018-07-17 14:24   ` Baoquan He
2018-07-17 14:24     ` Baoquan He
2018-07-17 14:28     ` Michal Hocko
2018-07-17 14:28       ` Michal Hocko
2018-07-17 20:46 ` David Rientjes
2018-07-17 20:46   ` David Rientjes
2018-07-17 23:31   ` Baoquan He
2018-07-17 23:31     ` Baoquan He
2018-07-18 20:16     ` David Rientjes
2018-07-18 20:16       ` David Rientjes
2018-07-18 15:10   ` Michal Hocko
2018-07-18 15:10     ` Michal Hocko

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180717131837.18411-1-bhe@redhat.com \
    --to=bhe@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=corbet@lwn.net \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mhocko@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.