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| author | Eric Dumazet <edumazet@google.com> | 2021-12-04 20:21:55 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-06 16:04:44 -0800 |
| commit | 4e66934eaadc83b27ada8d42b60894018f3bfabf (patch) | |
| tree | fc56c9432018c4128c6462cc5f970bd2212aab9d /lib/Kconfig | |
| parent | ce83278f313ce65a9bbd780a3e07fa3f62d82525 (diff) | |
| download | linux-stable-4e66934eaadc83b27ada8d42b60894018f3bfabf.tar.gz linux-stable-4e66934eaadc83b27ada8d42b60894018f3bfabf.tar.bz2 linux-stable-4e66934eaadc83b27ada8d42b60894018f3bfabf.zip | |
lib: add reference counting tracking infrastructure
It can be hard to track where references are taken and released.
In networking, we have annoying issues at device or netns dismantles,
and we had various proposals to ease root causing them.
This patch adds new infrastructure pairing refcount increases
and decreases. This will self document code, because programmers
will have to associate increments/decrements.
This is controled by CONFIG_REF_TRACKER which can be selected
by users of this feature.
This adds both cpu and memory costs, and thus should probably be
used with care.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 5e7165e6a346..655b0e43f260 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -680,6 +680,11 @@ config STACK_HASH_ORDER Select the hash size as a power of 2 for the stackdepot hash table. Choose a lower value to reduce the memory impact. +config REF_TRACKER + bool + depends on STACKTRACE_SUPPORT + select STACKDEPOT + config SBITMAP bool |