diff options
| author | Ankit Goyal <layog@google.com> | 2022-03-07 18:18:29 -0800 |
|---|---|---|
| committer | Minchan Kim <minchan@google.com> | 2022-03-14 18:24:05 +0000 |
| commit | 3d9f70261b023712c5113fb715f114ad8db9cfae (patch) | |
| tree | dce1c5a9c496f195d66efad0ccd167945b329b49 | |
| parent | 4574bd289c9d48e623727c9c7e790ff1126f4405 (diff) | |
| download | gpu-3d9f70261b023712c5113fb715f114ad8db9cfae.tar.gz | |
mali_kbase: Use FOLL_LONGTERM to pin user buffer on import
FOLL_LONGTERM flag allows to remap CMA pages which reduces the pressure
on future CMA allocations.
Fix: 221777589
Test: To be tested by minchan@
Change-Id: Ib7b221e4f95610fc85ac3399a31ac98f5a57fa23
Signed-off-by: Ankit Goyal <layog@google.com>
(cherry picked from commit ac855831a4d92f29298323326aeb84ace876c55c)
| -rw-r--r-- | mali_kbase/mali_kbase_mem_linux.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mali_kbase/mali_kbase_mem_linux.c b/mali_kbase/mali_kbase_mem_linux.c index d76da0e..762b5a6 100644 --- a/mali_kbase/mali_kbase_mem_linux.c +++ b/mali_kbase/mali_kbase_mem_linux.c @@ -1649,8 +1649,15 @@ KERNEL_VERSION(4, 5, 0) > LINUX_VERSION_CODE faulted_pages = get_user_pages(address, *va_pages, write ? FOLL_WRITE : 0, pages, NULL); #else + /* + * User buffers should be pinned with FOLL_LONGTERM flag as their usage + * cannot be time bounded. This will make sure that we do not pin pages + * in the CMA region. + */ + pages = user_buf->pages; faulted_pages = pin_user_pages(address, *va_pages, - write ? FOLL_WRITE : 0, pages, NULL); + write ? FOLL_WRITE | FOLL_LONGTERM : FOLL_LONGTERM, + pages, NULL); #endif up_read(kbase_mem_get_process_mmap_lock()); |