diff options
| author | Ganesh Mahendran <opensource.ganesh@gmail.com> | 2018-03-05 19:07:06 +0800 |
|---|---|---|
| committer | Ganesh Mahendran <opensource.ganesh@gmail.com> | 2019-01-29 06:30:30 +0000 |
| commit | baff465f668aff2d4b5b410ad28a40138b423323 (patch) | |
| tree | 4ef4d88a1bed74ff47e3ba7d010bbdecbf247b34 /rs/java/android/renderscript/ProgramFragmentFixedFunction.java | |
| parent | fad9571dc59e822d6d59ad163b55799de9d1bc34 (diff) | |
continue read file when returned count > 0
In android, we met a lot of watchdog timeout which
caused by read file "/d/wakeup_sources".
The root cause is that in kernel side wakeup.c, it uses single_open()
interface to show the stats. But single_open() interface
requires that the whole output must fit into a single
buffer(physical continuous). This will lead to timeout when system
memory is not in a good situation.
Problem in kenrel side has been merged in [1]. Then kernel will return
max a page bytes to user space. So in KernelWakelockReader, we
need to read again when returned count > 0.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.0-rc4&id=00ee22c28915d111ba415750a3311d7678fd1206
Change-Id: If7886514c609c8d6338532c67c1cee79f2754ab1
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Diffstat (limited to 'rs/java/android/renderscript/ProgramFragmentFixedFunction.java')
0 files changed, 0 insertions, 0 deletions