Messages in this thread Patch in this message | | | Date | Fri, 11 Jul 2014 10:17:41 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: vmstat: On demand vmstat workers V8 |
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On Fri, 11 Jul 2014, Frederic Weisbecker wrote:
> > Converted what? We still need to keep a cpumask around that tells us which > > processor have vmstat running and which do not. > > > > Converted to cpumask_var_t. > > I mean we spent dozens emails on that...
Oh there is this outstanding fix, right.
Subject: on demand vmstat: Do not open code alloc_cpumask_var
Signed-off-by: Christoph Lameter <cl@linux.com>
Index: linux/mm/vmstat.c =================================================================== --- linux.orig/mm/vmstat.c 2014-07-11 10:15:55.356856916 -0500 +++ linux/mm/vmstat.c 2014-07-11 10:15:55.352856994 -0500 @@ -1244,7 +1244,7 @@ #ifdef CONFIG_SMP static DEFINE_PER_CPU(struct delayed_work, vmstat_work); int sysctl_stat_interval __read_mostly = HZ; -struct cpumask *cpu_stat_off; +cpumask_var_t cpu_stat_off;
static void vmstat_update(struct work_struct *w) { @@ -1338,7 +1338,8 @@ INIT_DEFERRABLE_WORK(per_cpu_ptr(&vmstat_work, cpu), vmstat_update);
- cpu_stat_off = kmalloc(cpumask_size(), GFP_KERNEL); + if (!alloc_cpumask_var(&cpu_stat_off, GFP_KERNEL)) + BUG(); cpumask_copy(cpu_stat_off, cpu_online_mask);
schedule_delayed_work(&shepherd,
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