tree 22b28b1681dd32d9ff9686009c16a5540ce5bc90
parent b2ad368bebc0f772613668e893fa176396e9094c
author Anton Vorontsov <anton.vorontsov@linaro.org> 1341879040 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1342543898 -0700

pstore: Introduce write_buf backend callback

For function tracing we need to stop using pstore.buf directly, since
in a tracing callback we can't use spinlocks, and thus we can't safely
use the global buffer.

With write_buf callback, backends no longer need to access pstore.buf
directly, and thus we can pass any buffers (e.g. allocated on stack).

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>