[PATCH] kmemtrace: fix kernel parameter documentation

[PATCH] kmemtrace: fix kernel parameter documentation

[Pekka Enberg]

From: Pekka Enberg <penberg@cs.helsinki.fi>

The kmemtrace.enable kernel parameter no longer works. To enable kmemtrace at
boot-time, you must pass "ftrace=kmemtrace" instead.

Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---
  Documentation/kernel-parameters.txt |   10 ----------
  1 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e87bdbf..9243dd8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -56,7 +56,6 @@ parameter is applicable:
  	ISAPNP	ISA PnP code is enabled.
  	ISDN	Appropriate ISDN support is enabled.
  	JOY	Appropriate joystick support is enabled.
-	KMEMTRACE kmemtrace is enabled.
  	LIBATA  Libata driver is enabled
  	LP	Printer support is enabled.
  	LOOP	Loopback device support is enabled.
@@ -1054,15 +1053,6 @@ and is between 256 and 4096 characters. It is defined in the file
  			use the HighMem zone if it exists, and the Normal
  			zone if it does not.

-	kmemtrace.enable=	[KNL,KMEMTRACE] Format: { yes | no }
-				Controls whether kmemtrace is enabled
-				at boot-time.
-
-	kmemtrace.subbufs=n	[KNL,KMEMTRACE] Overrides the number of
-			subbufs kmemtrace's relay channel has. Set this
-			higher than default (KMEMTRACE_N_SUBBUFS in code) if
-			you experience buffer overruns.
-
  	kgdboc=		[HW] kgdb over consoles.
  			Requires a tty driver that supports console polling.
  			(only serial suported for now)
-- 
1.6.0.4

Re: [PATCH] kmemtrace: fix kernel parameter documentation

[Randy Dunlap]

Pekka Enberg wrote:
> From: Pekka Enberg <penberg@cs.helsinki.fi>
> 
> The kmemtrace.enable kernel parameter no longer works. To enable
> kmemtrace at
> boot-time, you must pass "ftrace=kmemtrace" instead.

Can someone also list the possible tracers in the ftrace= area, please?

	ftrace=[tracer]
			[ftrace] will set and start the specified tracer
			as early as possible in order to facilitate early
			boot debugging.

Thanks.

> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
> ---
>  Documentation/kernel-parameters.txt |   10 ----------
>  1 files changed, 0 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/kernel-parameters.txt
> b/Documentation/kernel-parameters.txt
> index e87bdbf..9243dd8 100644
> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> @@ -56,7 +56,6 @@ parameter is applicable:
>      ISAPNP    ISA PnP code is enabled.
>      ISDN    Appropriate ISDN support is enabled.
>      JOY    Appropriate joystick support is enabled.
> -    KMEMTRACE kmemtrace is enabled.
>      LIBATA  Libata driver is enabled
>      LP    Printer support is enabled.
>      LOOP    Loopback device support is enabled.
> @@ -1054,15 +1053,6 @@ and is between 256 and 4096 characters. It is
> defined in the file
>              use the HighMem zone if it exists, and the Normal
>              zone if it does not.
> 
> -    kmemtrace.enable=    [KNL,KMEMTRACE] Format: { yes | no }
> -                Controls whether kmemtrace is enabled
> -                at boot-time.
> -
> -    kmemtrace.subbufs=n    [KNL,KMEMTRACE] Overrides the number of
> -            subbufs kmemtrace's relay channel has. Set this
> -            higher than default (KMEMTRACE_N_SUBBUFS in code) if
> -            you experience buffer overruns.
> -
>      kgdboc=        [HW] kgdb over consoles.
>              Requires a tty driver that supports console polling.
>              (only serial suported for now)


-- 
~Randy
LPC 2009, Sept. 23-25, Portland, Oregon
http://linuxplumbersconf.org/2009/

[tip:tracing/core] kmemtrace: fix kernel parameter documentation

[tip-bot for Pekka Enberg]

Commit-ID:  29fcefba8a2f0fea11e2b721fe174a1832801284
Gitweb:     http://git.kernel.org/tip/29fcefba8a2f0fea11e2b721fe174a1832801284
Author:     Pekka Enberg <penberg@cs.helsinki.fi>
AuthorDate: Sun, 24 May 2009 11:13:17 +0300
Committer:  Frederic Weisbecker <fweisbec@gmail.com>
CommitDate: Tue, 26 May 2009 03:03:21 +0200

kmemtrace: fix kernel parameter documentation

The kmemtrace.enable kernel parameter no longer works. To enable
kmemtrace at boot-time, you must pass "ftrace=kmemtrace" instead.

[ Impact: remove obsolete kernel parameter documentation ]

Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <alpine.DEB.2.00.0905241112190.10296@rocky>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>


---
 Documentation/kernel-parameters.txt |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e87bdbf..9243dd8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -56,7 +56,6 @@ parameter is applicable:
 	ISAPNP	ISA PnP code is enabled.
 	ISDN	Appropriate ISDN support is enabled.
 	JOY	Appropriate joystick support is enabled.
-	KMEMTRACE kmemtrace is enabled.
 	LIBATA  Libata driver is enabled
 	LP	Printer support is enabled.
 	LOOP	Loopback device support is enabled.
@@ -1054,15 +1053,6 @@ and is between 256 and 4096 characters. It is defined in the file
 			use the HighMem zone if it exists, and the Normal
 			zone if it does not.
 
-	kmemtrace.enable=	[KNL,KMEMTRACE] Format: { yes | no }
-				Controls whether kmemtrace is enabled
-				at boot-time.
-
-	kmemtrace.subbufs=n	[KNL,KMEMTRACE] Overrides the number of
-			subbufs kmemtrace's relay channel has. Set this
-			higher than default (KMEMTRACE_N_SUBBUFS in code) if
-			you experience buffer overruns.
-
 	kgdboc=		[HW] kgdb over consoles.
 			Requires a tty driver that supports console polling.
 			(only serial suported for now)