Re: [PATCH 1/2] vt: add cursor blink interval escape sequence
flat view
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2015-03-25 11:19:58
Also in:
linux-fbdev, linux-man, lkml
On Fri, Feb 27, 2015 at 07:13:48PM +0000, Scot Doyle wrote:
quoted hunk ↗ jump to hunk
Add an escape sequence to specify the current console's cursor blink interval. The interval is specified as a number of milliseconds until the next cursor display state toggle, from 50 to 65535. /proc/loadavg did not show a difference with a one msec interval, but the lower bound is set to 50 msecs since slower hardware wasn't tested. Store the interval in the vc_data structure for later access by fbcon, initializing the value to fbcon's current hardcoded value of 200 msecs. Signed-off-by: Scot Doyle <redacted> Acked-by: Pavel Machek <redacted> --- drivers/tty/vt/vt.c | 9 +++++++++ include/linux/console_struct.h | 1 + 2 files changed, 10 insertions(+)diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 6e00572..ab1f173 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c@@ -135,6 +135,7 @@ const struct consw *conswitchp; */ #define DEFAULT_BELL_PITCH 750 #define DEFAULT_BELL_DURATION (HZ/8) +#define DEFAULT_CURSOR_BLINK_MS 200 struct vc vc_cons [MAX_NR_CONSOLES];@@ -1590,6 +1591,13 @@ static void setterm_command(struct vc_data *vc) case 15: /* activate the previous console */ set_console(last_console); break; + case 16: /* set cursor blink duration in msec */
Where is this now documented? Is this a "standard" ASCII command somewhere? Adding new userspace apis have to be documented properly. Without that, I can't take this series, sorry. greg k-h