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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-27 20:08:10 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-27 20:08:10 +0300 |
| commit | 288321a9c65192878446a00acaa9f6c3ca9bb1f5 (patch) | |
| tree | d61bceb24d7438de2c965af7883bcfd0ffd828a6 /Documentation/admin-guide | |
| parent | 7e4910b9acea9fb9575f6506f76dd465259ad8d9 (diff) | |
| parent | 9d843e8fafc7c0b15d8f511d146c0c3d7c816634 (diff) | |
| download | linux-288321a9c65192878446a00acaa9f6c3ca9bb1f5.tar.xz | |
Merge tag 'pstore-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore update from Kees Cook:
- Add mem_type property to expand support for >2 memory types (Mukesh Ojha)
* tag 'pstore-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore: Add mem_type property DT parsing support
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/ramoops.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/admin-guide/ramoops.rst b/Documentation/admin-guide/ramoops.rst index b0a1ae7df13b..8f107d8c9261 100644 --- a/Documentation/admin-guide/ramoops.rst +++ b/Documentation/admin-guide/ramoops.rst @@ -3,7 +3,7 @@ Ramoops oops/panic logger Sergiu Iordache <sergiu@chromium.org> -Updated: 17 November 2011 +Updated: 10 Feb 2021 Introduction ------------ @@ -30,6 +30,8 @@ mapping to pgprot_writecombine. Setting ``mem_type=1`` attempts to use depends on atomic operations. At least on ARM, pgprot_noncached causes the memory to be mapped strongly ordered, and atomic operations on strongly ordered memory are implementation defined, and won't work on many ARMs such as omaps. +Setting ``mem_type=2`` attempts to treat the memory region as normal memory, +which enables full cache on it. This can improve the performance. The memory area is divided into ``record_size`` chunks (also rounded down to power of two) and each kmesg dump writes a ``record_size`` chunk of |