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| author | Aleksandr Nogikh <nogikh@google.com> | 2022-03-24 00:07:15 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-24 03:00:35 +0100 |
| commit | b3d7fe86fbd06638c71dd851ba921adf50d912ce (patch) | |
| tree | ac567b3981ea70b0ebfca87372d8e361392b93a7 /include/dt-bindings/gpio/tegra241-gpio.h | |
| parent | kcov: split ioctl handling into locked and unlocked parts (diff) | |
| download | linux-b3d7fe86fbd06638c71dd851ba921adf50d912ce.tar.xz linux-b3d7fe86fbd06638c71dd851ba921adf50d912ce.zip | |
kcov: properly handle subsequent mmap calls
Allocate the kcov buffer during KCOV_MODE_INIT in order to untie mmapping
of a kcov instance and the actual coverage collection process. Modify
kcov_mmap, so that it can be reliably used any number of times once
KCOV_MODE_INIT has succeeded.
These changes to the user-facing interface of the tool only weaken the
preconditions, so all existing user space code should remain compatible
with the new version.
Link: https://lkml.kernel.org/r/20220117153634.150357-3-nogikh@google.com
Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Taras Madan <tarasmadan@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/dt-bindings/gpio/tegra241-gpio.h')
0 files changed, 0 insertions, 0 deletions