On Wed, Mar 24, 2021 at 03:37:02PM +0300, Dmitry Osipenko wrote:
> 24.03.2021 08:44, Minchan Kim пишет:
> > On Tue, Mar 23, 2021 at 09:47:27PM -0700, John Hubbard wrote:
> >> On 3/23/21 8:27 PM, Minchan Kim wrote:
> >> ...
> > +static int __init cma_sysfs_init(void)
> > +{
> > +
On Wed, Mar 24, 2021 at 03:33:07PM +0300, Dmitry Osipenko wrote:
> 24.03.2021 04:05, Minchan Kim пишет:
> > +static struct kobject *cma_kobj_root;
>
> This should be a local variable.
Sure.
>
> > +static struct kobj_type cma_ktype = {
> > + .release = cma_kobj_release,
> > + .sysfs_ops =
24.03.2021 08:44, Minchan Kim пишет:
> On Tue, Mar 23, 2021 at 09:47:27PM -0700, John Hubbard wrote:
>> On 3/23/21 8:27 PM, Minchan Kim wrote:
>> ...
> +static int __init cma_sysfs_init(void)
> +{
> + unsigned int i;
> +
> + cma_kobj_root = kobject_create_and_add("cma",
24.03.2021 04:05, Minchan Kim пишет:
> +static struct kobject *cma_kobj_root;
This should be a local variable.
> +static struct kobj_type cma_ktype = {
> + .release = cma_kobj_release,
> + .sysfs_ops = _sysfs_ops,
> + .default_groups = cma_groups
I'd add a comma to the end, for
On 3/23/21 11:57 PM, Minchan Kim wrote:
...
, how about approximately this:
struct cma_kobject_wrapper {
struct cma *parent;
struct kobject kobj;
};
struct cma {
...
struct cma_kobject_wrapper *cma_kobj_wrapper;
};
...thus allowing readers of cma_sysfs.c to read that
On Tue, Mar 23, 2021 at 11:26:08PM -0700, John Hubbard wrote:
> On 3/23/21 10:44 PM, Minchan Kim wrote:
> > On Tue, Mar 23, 2021 at 09:47:27PM -0700, John Hubbard wrote:
> > > On 3/23/21 8:27 PM, Minchan Kim wrote:
> > > ...
> > > > > > +static int __init cma_sysfs_init(void)
> > > > > > +{
> > >
On 3/23/21 10:44 PM, Minchan Kim wrote:
On Tue, Mar 23, 2021 at 09:47:27PM -0700, John Hubbard wrote:
On 3/23/21 8:27 PM, Minchan Kim wrote:
...
+static int __init cma_sysfs_init(void)
+{
+ unsigned int i;
+
+ cma_kobj_root = kobject_create_and_add("cma", mm_kobj);
+ if
On Tue, Mar 23, 2021 at 09:47:27PM -0700, John Hubbard wrote:
> On 3/23/21 8:27 PM, Minchan Kim wrote:
> ...
> > > > +static int __init cma_sysfs_init(void)
> > > > +{
> > > > + unsigned int i;
> > > > +
> > > > + cma_kobj_root = kobject_create_and_add("cma", mm_kobj);
> > > > +
On 3/23/21 8:27 PM, Minchan Kim wrote:
...
+static int __init cma_sysfs_init(void)
+{
+ unsigned int i;
+
+ cma_kobj_root = kobject_create_and_add("cma", mm_kobj);
+ if (!cma_kobj_root)
+ return -ENOMEM;
+
+ for (i = 0; i < cma_area_count; i++) {
+
On Tue, Mar 23, 2021 at 07:34:12PM -0700, John Hubbard wrote:
> On 3/23/21 6:05 PM, Minchan Kim wrote:
> ...> diff --git a/mm/cma_sysfs.c b/mm/cma_sysfs.c
> > new file mode 100644
> > index ..c3791a032dc5
> > --- /dev/null
> > +++ b/mm/cma_sysfs.c
> > @@ -0,0 +1,107 @@
> > +//
On 3/23/21 6:05 PM, Minchan Kim wrote:
...> diff --git a/mm/cma_sysfs.c b/mm/cma_sysfs.c
new file mode 100644
index ..c3791a032dc5
--- /dev/null
+++ b/mm/cma_sysfs.c
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CMA SysFS Interface
+ *
+ * Copyright (c) 2021 Minchan
Since CMA is getting used more widely, it's more important to
keep monitoring CMA statistics for system health since it's
directly related to user experience.
This patch introduces sysfs statistics for CMA, in order to provide
some basic monitoring of the CMA allocator.
* the number of CMA page
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