Marco Elver 07e8481d3c kfence: always use static branches to guard kfence_alloc() ...

Regardless of KFENCE mode (CONFIG_KFENCE_STATIC_KEYS: either using
static keys to gate allocations, or using a simple dynamic branch),
always use a static branch to avoid the dynamic branch in kfence_alloc()
if KFENCE was disabled at boot.

For CONFIG_KFENCE_STATIC_KEYS=n, this now avoids the dynamic branch if
KFENCE was disabled at boot.

To simplify, also unifies the location where kfence_allocation_gate is
read-checked to just be inline in kfence_alloc().

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Marco Elver <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Jann Horn <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2021-11-06 13:30:43 -07:00

..

core.c

kfence: always use static branches to guard kfence_alloc()

2021-11-06 13:30:43 -07:00

kfence_test.c

kfence: test: use kunit_skip() to skip tests

2021-11-06 13:30:43 -07:00

kfence.h

kfence: limit currently covered allocations when pool nearly full

2021-11-06 13:30:43 -07:00

Makefile

kfence: add test suite

2021-02-26 09:41:02 -08:00

report.c

Merge branch 'akpm' (patches from Andrew)

2021-09-08 12:55:35 -07:00