Messages in this thread | | | Date | Wed, 17 Sep 2008 16:50:53 +0200 | From | Eric Dumazet <> | Subject | Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 |
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Eric Dumazet a écrit : > Mike Galbraith a écrit :
>> I sure hope it's something like ping-pong, it's driving me NUTS. > > Could you please try following patch ? > > [PATCH] security_ops moved to read_mostly section > > "struct security_operations *security_ops" should be moved to > read_mostly section in order to NOT let it share a cache line with higly > modified variables. > > Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> > > diff --git a/security/security.c b/security/security.c > index 3a4b4f5..0b13d65 100644 > --- a/security/security.c > +++ b/security/security.c > @@ -24,7 +24,7 @@ static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1]; > extern struct security_operations default_security_ops; > extern void security_fixup_ops(struct security_operations *ops); > > -struct security_operations *security_ops; /* Initialized to NULL */ > +struct security_operations *security_ops __read_mostly;e
Sorry for the extra 'e' at the end of this line, please remove it :)
> > /* amount of vm to protect from userspace access */ > unsigned long mmap_min_addr = CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR; >
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