Messages in this thread |  | | | Date | Mon, 2 Jul 2012 11:42:22 -0400 | | From | Konrad Rzeszutek Wilk <> | | Subject | Re: [PATCH 11/40] autonuma: define the autonuma flags |
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On Sat, Jun 30, 2012 at 12:58:25AM -0400, Konrad Rzeszutek Wilk wrote: > On Thu, Jun 28, 2012 at 02:55:51PM +0200, Andrea Arcangeli wrote: > > These flags are the ones tweaked through sysfs, they control the > > behavior of autonuma, from enabling disabling it, to selecting various > > runtime options. > > > > Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> > > --- > > include/linux/autonuma_flags.h | 62 ++++++++++++++++++++++++++++++++++++++++ > > 1 files changed, 62 insertions(+), 0 deletions(-) > > create mode 100644 include/linux/autonuma_flags.h > > > > diff --git a/include/linux/autonuma_flags.h b/include/linux/autonuma_flags.h > > new file mode 100644 > > index 0000000..5e29a75 > > --- /dev/null > > +++ b/include/linux/autonuma_flags.h > > @@ -0,0 +1,62 @@ > > +#ifndef _LINUX_AUTONUMA_FLAGS_H > > +#define _LINUX_AUTONUMA_FLAGS_H > > + > > +enum autonuma_flag { > > These aren't really flags. They are bit-fields. > A > > + AUTONUMA_FLAG, > > Looking at the code, this is to turn it on. Perhaps a better name such > as: AUTONUMA_ACTIVE_FLAG ? > > > > + AUTONUMA_IMPOSSIBLE_FLAG, > > + AUTONUMA_DEBUG_FLAG, > > + AUTONUMA_SCHED_LOAD_BALANCE_STRICT_FLAG, > > I might have gotten my math wrong, but if you have > AUTONUMA_SCHED_LOAD_BALACE.. set (so 3), that also means > that bit 0 and 1 are on. In other words AUTONUMA_FLAG > and AUTONUMA_IMPOSSIBLE_FLAG are turned on. > > > + AUTONUMA_SCHED_CLONE_RESET_FLAG, > > + AUTONUMA_SCHED_FORK_RESET_FLAG, > > + AUTONUMA_SCAN_PMD_FLAG, > > So this is 6, which means 110 bits. So AUTONUMA_FLAG > gets turned off.
Ignore that pls. I had in my mind that test_bit was doing boolean logic (anding and masking, and such), but that is not the case.
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