diff options
| author | Akinobu Mita <[email protected]> | 2019-09-29 23:18:49 +0900 |
|---|---|---|
| committer | Pavel <[email protected]> | 2019-11-03 17:38:14 +0100 |
| commit | 11f70002213774ed233950f71ea8803fa3700aa3 (patch) | |
| tree | ba8c781e79c59e15456b49b1a363a15be74955c7 /lib/mpi/mpiutil.c | |
| parent | a2cafdfd8cf5ad8adda6c0ce44a59f46431edf02 (diff) | |
leds: remove PAGE_SIZE limit of /sys/class/leds/<led>/trigger
Reading /sys/class/leds/<led>/trigger returns all available LED triggers.
However, the size of this file is limited to PAGE_SIZE because of the
limitation for sysfs attribute.
Enabling LED CPU trigger on systems with thousands of CPUs easily hits
PAGE_SIZE limit, and makes it impossible to see all available LED triggers
and which trigger is currently activated.
We work around it here by converting /sys/class/leds/<led>/trigger to
binary attribute, which is not limited by length. This is _not_ good
design, do not copy it.
Signed-off-by: Akinobu Mita <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Dan Murphy <[email protected]>A
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Pavel Machek <[email protected]>
Diffstat (limited to 'lib/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions