(2012/11/08 13:42), Tejun Heo wrote:
Hello, Kame.
On Thu, Nov 08, 2012 at 01:37:50PM +0900, Kamezawa Hiroyuki wrote:
How about
enum {
__CGROUP_FREEZING,
__CGROUP_FROZEN,
};
#define CGROUP_FREEZER_STATE_MASK 0x3
#define CGROUP_FREEZER_STATE(state) ((state) & CGROUP_FREEZER_STATE_MASK)
#define CGROUP_THAW(state) (CGROUP_FREEZER_STATE(state) == 0)
#define CGROUP_FREEZING(state) (CGROUP_FREEZER_STATE(state) ==
__CGROUP_FREEZING)
#define CGROUP_FROZEN(state)\
(CGROUP_FREEZER_STATE(state) == (__CGROUP_FREEZING | __CGROUP_FROZEN))
I think it's a bit overdone and we have cases where we test for
FREEZING regardless of FROZEN and cases where test for FREEZING &&
!FROZEN. We can have, say, CGROUP_FREZING() and then
CGROUP_FREEZING_BUT_NOT_FROZEN(), but it feels more like obfuscation
than anything else.
Hm, then, I'm glad if I can see what combinations of flags are valid and
meanings of them in source code comments.
Anyway,
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hir...@jp.fujitsu.com>
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