diff options
| author | Helge Deller <deller@gmx.de> | 2023-08-25 17:46:39 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2023-08-26 10:14:42 +0200 |
| commit | 358ad816e52d4253b38c2f312e6b1cbd89e0dbf7 (patch) | |
| tree | ae9dd9e9c0ec621a11fc7f6aa420ccdf145cb968 /drivers/parisc/led.c | |
| parent | 8f01caf0c5c14b2dc086c766cf5321fbcdc40bd1 (diff) | |
| download | linux-358ad816e52d4253b38c2f312e6b1cbd89e0dbf7.tar.gz | |
parisc: led: Reduce CPU overhead for disk & lan LED computation
Older PA-RISC machines have LEDs which show the disk- and LAN-activity.
The computation is done in software and takes quite some time, e.g. on a
J6500 this may take up to 60% time of one CPU if the machine is loaded
via network traffic.
Since most people don't care about the LEDs, start with LEDs disabled and
just show a CPU heartbeat LED. The disk and LAN LEDs can be turned on
manually via /proc/pdc/led.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'drivers/parisc/led.c')
| -rw-r--r-- | drivers/parisc/led.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 8bdc5e043831cd..3737c1021f88b7 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -56,8 +56,8 @@ static int led_type __read_mostly = -1; static unsigned char lastleds; /* LED state from most recent update */ static unsigned int led_heartbeat __read_mostly = 1; -static unsigned int led_diskio __read_mostly = 1; -static unsigned int led_lanrxtx __read_mostly = 1; +static unsigned int led_diskio __read_mostly; +static unsigned int led_lanrxtx __read_mostly; static char lcd_text[32] __read_mostly; static char lcd_text_default[32] __read_mostly; static int lcd_no_led_support __read_mostly = 0; /* KittyHawk doesn't support LED on its LCD */ |