diff options
| author | Mark Salyzyn <salyzyn@google.com> | 2016-08-31 08:09:04 -0700 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2016-09-14 14:44:33 +0530 |
| commit | 872ffdd406dc2c2d218a43ce9f2e7f8d0aec4643 (patch) | |
| tree | 414d3e6e78aac782830b706eef8d34bb98745721 /kernel/sysctl_binary.c | |
| parent | f9ae153c0546111f4f11a6a63473802fcad345c2 (diff) | |
FROMLIST: pstore: drop pmsg bounce buffer
(from https://lkml.org/lkml/2016/9/1/428)
(cherry pick from android-3.10 commit b58133100b38f2bf83cad2d7097417a3a196ed0b)
Removing a bounce buffer copy operation in the pmsg driver path is
always better. We also gain in overall performance by not requesting
a vmalloc on every write as this can cause precious RT tasks, such
as user facing media operation, to stall while memory is being
reclaimed. Added a write_buf_user to the pstore functions, a backup
platform write_buf_user that uses the small buffer that is part of
the instance, and implemented a ramoops write_buf_user that only
supports PSTORE_TYPE_PMSG.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 31057326
Change-Id: I4cdee1cd31467aa3e6c605bce2fbd4de5b0f8caa
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions