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| author | Ingo Molnar <mingo@elte.hu> | 2009-05-19 09:22:19 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-19 09:22:19 +0200 |
| commit | 4200efd9acda4accf24640f1e77d24fdcdb524df (patch) | |
| tree | ffeda24ae6a9c1b8ca94615e261434d925d2ed2c /kernel/sched.c | |
| parent | 2d02494f5a90f2e4b3c4c6acc85ec94674cdc431 (diff) | |
| download | op-kernel-dev-4200efd9acda4accf24640f1e77d24fdcdb524df.zip op-kernel-dev-4200efd9acda4accf24640f1e77d24fdcdb524df.tar.gz | |
sched: properly define the sched_group::cpumask and sched_domain::span fields
Properly document the variable-size structure tricks we are doing
wrt. struct sched_group and sched_domain, and use the field[0] GCC
extension instead of defining a vla array.
Dont use unions for this, as pointed out by Linus.
[ Impact: cleanup, un-confuse Sparse and LLVM ]
Reported-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <alpine.LFD.2.01.0905180850110.3301@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 497c09b..228acae 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -7948,8 +7948,9 @@ int sched_smt_power_savings = 0, sched_mc_power_savings = 0; /* * The cpus mask in sched_group and sched_domain hangs off the end. - * FIXME: use cpumask_var_t or dynamic percpu alloc to avoid wasting space - * for nr_cpu_ids < CONFIG_NR_CPUS. + * + * ( See the the comments in include/linux/sched.h:struct sched_group + * and struct sched_domain. ) */ struct static_sched_group { struct sched_group sg; |
