David Windsor
bd174169c7
locking/refcount: Add refcount_t API kernel-doc comments
...
Signed-off-by: David Windsor <dwindsor@gmail.com >
Acked-by: Peter Zijlstra <peterz@infradead.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: elena.reshetova@intel.com
Cc: kernel-hardening@lists.openwall.com
Link: http://lkml.kernel.org/r/1489160052-20293-1-git-send-email-dwindsor@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2017-03-13 07:41:08 +01:00
Elena Reshetova
318b1dedcd
locking/refcounts: Add missing kernel.h header to have UINT_MAX defined
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Fix header dependency.
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com >
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com >
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Link: http://lkml.kernel.org/r/1487855374-21993-1-git-send-email-elena.reshetova@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2017-02-24 09:02:10 +01:00
Peter Zijlstra
29dee3c03a
locking/refcounts: Out-of-line everything
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Linus asked to please make this real C code.
And since size then isn't an issue what so ever anymore, remove the
debug knob and make all WARN()s unconditional.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org >
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: dwindsor@gmail.com
Cc: elena.reshetova@intel.com
Cc: gregkh@linuxfoundation.org
Cc: ishkamiel@gmail.com
Cc: keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2017-02-24 09:02:10 +01:00
Peter Zijlstra
f405df5de3
refcount_t: Introduce a special purpose refcount type
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Provide refcount_t, an atomic_t like primitive built just for
refcounting.
It provides saturation semantics such that overflow becomes impossible
and thereby 'spurious' use-after-free is avoided.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org >
Cc: Linus Torvalds <torvalds@linux-foundation.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Thomas Gleixner <tglx@linutronix.de >
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2017-02-10 09:04:19 +01:00
