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| author |   Peng Liu <liupeng256@huawei.com> | 2022-02-11 16:32:35 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-11 17:55:00 -0800 |
| commit | 8913c61001482378d4ed8cc577b17c1ba3e847e4 (patch) | |
| tree | 38a42b1093d0338f23d13039b38344d60d032f17 /include/linux/kfence.h | |
| parent | mm: memcg: synchronize objcg lists with a dedicated spinlock (diff) | |
| download | linux-dev-8913c61001482378d4ed8cc577b17c1ba3e847e4.tar.xz linux-dev-8913c61001482378d4ed8cc577b17c1ba3e847e4.zip | |
kfence: make test case compatible with run time set sample interval
The parameter kfence_sample_interval can be set via boot parameter and
late shell command, which is convenient for automated tests and KFENCE
parameter optimization. However, KFENCE test case just uses
compile-time CONFIG_KFENCE_SAMPLE_INTERVAL, which will make KFENCE test
case not run as users desired. Export kfence_sample_interval, so that
KFENCE test case can use run-time-set sample interval.
Link: https://lkml.kernel.org/r/20220207034432.185532-1-liupeng256@huawei.com
Signed-off-by: Peng Liu <liupeng256@huawei.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Christian Knig <christian.koenig@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kfence.h')
| -rw-r--r-- | include/linux/kfence.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kfence.h b/include/linux/kfence.h index 4b5e3679a72c..f49e64222628 100644 --- a/include/linux/kfence.h +++ b/include/linux/kfence.h @@ -17,6 +17,8 @@ #include <linux/atomic.h> #include <linux/static_key.h> +extern unsigned long kfence_sample_interval; + /* * We allocate an even number of pages, as it simplifies calculations to map * address to metadata indices; effectively, the very first page serves as an |