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| author | Yanmin Zhang <yanmin_zhang@linux.intel.com> | 2011-10-31 17:11:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-31 17:30:53 -0700 |
| commit | 134620f7a865b3bc9e3d56d460603592b70ede21 (patch) | |
| tree | 82d455ffba5417b731d0283c6593e101dfb625ac /kernel | |
| parent | 0eca6b7c78fd997e02bd9850e608102382b7822e (diff) | |
| download | linux-134620f7a865b3bc9e3d56d460603592b70ede21.tar.gz linux-134620f7a865b3bc9e3d56d460603592b70ede21.tar.bz2 linux-134620f7a865b3bc9e3d56d460603592b70ede21.zip | |
printk: add console_suspend module parameter
We are enabling some power features on medfield. To test suspend-2-RAM
conveniently, we need turn on/off console_suspend_enabled frequently.
Add a module parameter, so users could change it by:
/sys/module/printk/parameters/console_suspend
Signed-off-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/printk.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/printk.c b/kernel/printk.c index e62f949ec140..6d9dedd11450 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -1111,6 +1111,10 @@ static int __init console_suspend_disable(char *str) return 1; } __setup("no_console_suspend", console_suspend_disable); +module_param_named(console_suspend, console_suspend_enabled, + bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(console_suspend, "suspend console during suspend" + " and hibernate operations"); /** * suspend_console - suspend the console subsystem |