On Tue, Jan 24, 2017 at 09:02:20PM -0500, Tejun Heo wrote:
> Hello,
>
> On Tue, Jan 24, 2017 at 11:54:57PM +, Mel Gorman wrote:
> > @@ -2402,24 +2415,16 @@ void drain_all_pages(struct zone *zone)
> > cpumask_clear_cpu(cpu, _with_pcps);
> > }
> >
> > +
On Tue, Jan 24, 2017 at 09:02:20PM -0500, Tejun Heo wrote:
> Hello,
>
> On Tue, Jan 24, 2017 at 11:54:57PM +, Mel Gorman wrote:
> > @@ -2402,24 +2415,16 @@ void drain_all_pages(struct zone *zone)
> > cpumask_clear_cpu(cpu, _with_pcps);
> > }
> >
> > +
Hello,
On Tue, Jan 24, 2017 at 11:54:57PM +, Mel Gorman wrote:
> @@ -2402,24 +2415,16 @@ void drain_all_pages(struct zone *zone)
> cpumask_clear_cpu(cpu, _with_pcps);
> }
>
> + for_each_cpu(cpu, _with_pcps) {
> + struct work_struct *work =
Hello,
On Tue, Jan 24, 2017 at 11:54:57PM +, Mel Gorman wrote:
> @@ -2402,24 +2415,16 @@ void drain_all_pages(struct zone *zone)
> cpumask_clear_cpu(cpu, _with_pcps);
> }
>
> + for_each_cpu(cpu, _with_pcps) {
> + struct work_struct *work =
On Tue, Jan 24, 2017 at 11:07:22AM -0500, Tejun Heo wrote:
> Hello, Mel.
>
> On Mon, Jan 23, 2017 at 11:04:29PM +, Mel Gorman wrote:
> > On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> > > Hello, Mel.
> > >
> > > On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > >
On Tue, Jan 24, 2017 at 11:07:22AM -0500, Tejun Heo wrote:
> Hello, Mel.
>
> On Mon, Jan 23, 2017 at 11:04:29PM +, Mel Gorman wrote:
> > On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> > > Hello, Mel.
> > >
> > > On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > >
Hello, Mel.
On Mon, Jan 23, 2017 at 11:04:29PM +, Mel Gorman wrote:
> On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> > Hello, Mel.
> >
> > On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > > What is the actual mechanism that does that? It's not something that
> >
Hello, Mel.
On Mon, Jan 23, 2017 at 11:04:29PM +, Mel Gorman wrote:
> On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> > Hello, Mel.
> >
> > On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > > What is the actual mechanism that does that? It's not something that
> >
On 01/17/2017 10:29 AM, Mel Gorman wrote:
> The per-cpu page allocator can be drained immediately via drain_all_pages()
> which sends IPIs to every CPU. In the next patch, the per-cpu allocator
> will only be used for interrupt-safe allocations which prevents draining
> it from IPI context. This
On 01/17/2017 10:29 AM, Mel Gorman wrote:
> The per-cpu page allocator can be drained immediately via drain_all_pages()
> which sends IPIs to every CPU. In the next patch, the per-cpu allocator
> will only be used for interrupt-safe allocations which prevents draining
> it from IPI context. This
On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> Hello, Mel.
>
> On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > What is the actual mechanism that does that? It's not something that
> > schedule_on_each_cpu does and one would expect that the core workqueue
> >
On Mon, Jan 23, 2017 at 03:55:01PM -0500, Tejun Heo wrote:
> Hello, Mel.
>
> On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> > What is the actual mechanism that does that? It's not something that
> > schedule_on_each_cpu does and one would expect that the core workqueue
> >
Hello, Mel.
On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> What is the actual mechanism that does that? It's not something that
> schedule_on_each_cpu does and one would expect that the core workqueue
> implementation would get this sort of detail correct. Or is this a proposal
>
Hello, Mel.
On Mon, Jan 23, 2017 at 08:04:12PM +, Mel Gorman wrote:
> What is the actual mechanism that does that? It's not something that
> schedule_on_each_cpu does and one would expect that the core workqueue
> implementation would get this sort of detail correct. Or is this a proposal
>
On Mon, Jan 23, 2017 at 12:03:29PM -0500, Tejun Heo wrote:
> Hello,
>
> On Fri, Jan 20, 2017 at 03:26:06PM +, Mel Gorman wrote:
> > > This translates to queue_work_on(), which has the comment of "We queue
> > > the work to a specific CPU, the caller must ensure it can't go away.",
> > > so is
On Mon, Jan 23, 2017 at 12:03:29PM -0500, Tejun Heo wrote:
> Hello,
>
> On Fri, Jan 20, 2017 at 03:26:06PM +, Mel Gorman wrote:
> > > This translates to queue_work_on(), which has the comment of "We queue
> > > the work to a specific CPU, the caller must ensure it can't go away.",
> > > so is
Hello,
On Fri, Jan 20, 2017 at 03:26:06PM +, Mel Gorman wrote:
> > This translates to queue_work_on(), which has the comment of "We queue
> > the work to a specific CPU, the caller must ensure it can't go away.",
> > so is this safe? lru_add_drain_all() uses get_online_cpus() around this.
> >
Hello,
On Fri, Jan 20, 2017 at 03:26:06PM +, Mel Gorman wrote:
> > This translates to queue_work_on(), which has the comment of "We queue
> > the work to a specific CPU, the caller must ensure it can't go away.",
> > so is this safe? lru_add_drain_all() uses get_online_cpus() around this.
> >
On Mon, Jan 23, 2017 at 05:29:20PM +0100, Petr Mladek wrote:
> On Fri 2017-01-20 15:26:06, Mel Gorman wrote:
> > On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > > > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > > > else
> > > >
On Mon, Jan 23, 2017 at 05:29:20PM +0100, Petr Mladek wrote:
> On Fri 2017-01-20 15:26:06, Mel Gorman wrote:
> > On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > > > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > > > else
> > > >
On Fri 2017-01-20 15:26:06, Mel Gorman wrote:
> On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > > else
> > > cpumask_clear_cpu(cpu, _with_pcps);
> > > }
> > > -
On Fri 2017-01-20 15:26:06, Mel Gorman wrote:
> On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > > else
> > > cpumask_clear_cpu(cpu, _with_pcps);
> > > }
> > > -
The per-cpu page allocator can be drained immediately via drain_all_pages()
which sends IPIs to every CPU. In the next patch, the per-cpu allocator
will only be used for interrupt-safe allocations which prevents draining
it from IPI context. This patch uses workqueues to drain the per-cpu
lists
The per-cpu page allocator can be drained immediately via drain_all_pages()
which sends IPIs to every CPU. In the next patch, the per-cpu allocator
will only be used for interrupt-safe allocations which prevents draining
it from IPI context. This patch uses workqueues to drain the per-cpu
lists
On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > else
> > cpumask_clear_cpu(cpu, _with_pcps);
> > }
> > - on_each_cpu_mask(_with_pcps, (smp_call_func_t) drain_local_pages,
>
On Fri, Jan 20, 2017 at 03:26:05PM +0100, Vlastimil Babka wrote:
> > @@ -2392,8 +2404,24 @@ void drain_all_pages(struct zone *zone)
> > else
> > cpumask_clear_cpu(cpu, _with_pcps);
> > }
> > - on_each_cpu_mask(_with_pcps, (smp_call_func_t) drain_local_pages,
>
On 01/17/2017 10:29 AM, Mel Gorman wrote:
> The per-cpu page allocator can be drained immediately via drain_all_pages()
> which sends IPIs to every CPU. In the next patch, the per-cpu allocator
> will only be used for interrupt-safe allocations which prevents draining
> it from IPI context. This
On 01/17/2017 10:29 AM, Mel Gorman wrote:
> The per-cpu page allocator can be drained immediately via drain_all_pages()
> which sends IPIs to every CPU. In the next patch, the per-cpu allocator
> will only be used for interrupt-safe allocations which prevents draining
> it from IPI context. This
The per-cpu page allocator can be drained immediately via drain_all_pages()
which sends IPIs to every CPU. In the next patch, the per-cpu allocator
will only be used for interrupt-safe allocations which prevents draining
it from IPI context. This patch uses workqueues to drain the per-cpu
lists
The per-cpu page allocator can be drained immediately via drain_all_pages()
which sends IPIs to every CPU. In the next patch, the per-cpu allocator
will only be used for interrupt-safe allocations which prevents draining
it from IPI context. This patch uses workqueues to drain the per-cpu
lists
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