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| author | Andrey Konovalov <andreyknvl@google.com> | 2023-11-20 18:47:04 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-11 01:51:44 +0100 |
| commit | fc60e0caa94dd7ca0e97a1d42527f71c9d51cd2d (patch) | |
| tree | 70518bad60587d739babc3e1cb081333e7ac5eeb /lib/Kconfig | |
| parent | lib/stackdepot: add depot_fetch_stack helper (diff) | |
| download | linux-fc60e0caa94dd7ca0e97a1d42527f71c9d51cd2d.tar.xz linux-fc60e0caa94dd7ca0e97a1d42527f71c9d51cd2d.zip | |
lib/stackdepot: use fixed-sized slots for stack records
Instead of storing stack records in stack depot pools one right after
another, use fixed-sized slots.
Add a new Kconfig option STACKDEPOT_MAX_FRAMES that allows to select the
size of the slot in frames. Use 64 as the default value, which is the
maximum stack trace size both KASAN and KMSAN use right now.
Also add descriptions for other stack depot Kconfig options.
This is preparatory patch for implementing the eviction of stack records
from the stack depot.
Link: https://lkml.kernel.org/r/dce7d030a99ff61022509665187fac45b0827298.1700502145.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 3ea1c830efab..5ddda7c2ed9b 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -713,10 +713,20 @@ config ARCH_STACKWALK config STACKDEPOT bool select STACKTRACE + help + Stack depot: stack trace storage that avoids duplication config STACKDEPOT_ALWAYS_INIT bool select STACKDEPOT + help + Always initialize stack depot during early boot + +config STACKDEPOT_MAX_FRAMES + int "Maximum number of frames in trace saved in stack depot" + range 1 256 + default 64 + depends on STACKDEPOT config REF_TRACKER bool |