diff mbox series

sched: Update kerneldoc for sched_rr_get_interval()

Message ID 20171211155651.7b098034@lwn.net
State New
Headers show
Series sched: Update kerneldoc for sched_rr_get_interval() | expand

Commit Message

Jonathan Corbet Dec. 11, 2017, 10:56 p.m. UTC
Commit abca5fc535a3e ("sched_rr_get_interval(): move compat to native, get
rid of set_fs()") changed the prototype of that function but left the
kerneldoc comments unchanged, leading to these docs-build warnings:

  ./kernel/sched/core.c:5113: warning: No description found for parameter 't'
  ./kernel/sched/core.c:5113: warning: Excess function parameter 'interval'
  			      description in 'sched_rr_get_interval'

Update the documentation (noting that it's not a user-space address
anymore) and make the docs build a little quieter.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

---
 kernel/sched/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

-- 
2.14.3

Comments

Randy Dunlap Dec. 11, 2017, 11:14 p.m. UTC | #1
On 12/11/2017 02:56 PM, Jonathan Corbet wrote:
> Commit abca5fc535a3e ("sched_rr_get_interval(): move compat to native, get

> rid of set_fs()") changed the prototype of that function but left the

> kerneldoc comments unchanged, leading to these docs-build warnings:

> 

>   ./kernel/sched/core.c:5113: warning: No description found for parameter 't'

>   ./kernel/sched/core.c:5113: warning: Excess function parameter 'interval'

>   			      description in 'sched_rr_get_interval'

> 

> Update the documentation (noting that it's not a user-space address

> anymore) and make the docs build a little quieter.

> 

> Signed-off-by: Jonathan Corbet <corbet@lwn.net>


I sent a patch for this on DEC-03 to Al, Ingo, PeterZ, and LKML.
https://marc.info/?l=linux-kernel&m=151233595424349&w=2

or I could ack your patch.  :)

> ---

>  kernel/sched/core.c | 6 +++---

>  1 file changed, 3 insertions(+), 3 deletions(-)

> 

> diff --git a/kernel/sched/core.c b/kernel/sched/core.c

> index 75554f366fd3..a6e9edb55333 100644

> --- a/kernel/sched/core.c

> +++ b/kernel/sched/core.c

> @@ -5100,12 +5100,12 @@ SYSCALL_DEFINE1(sched_get_priority_min, int, policy)

>  /**

>   * sys_sched_rr_get_interval - return the default timeslice of a process.

>   * @pid: pid of the process.

> - * @interval: userspace pointer to the timeslice value.

> + * @t: pointer to the timeslice value.

>   *

>   * this syscall writes the default timeslice value of a given process

> - * into the user-space timespec buffer. A value of '0' means infinity.

> + * into the timespec64 buffer. A value of '0' means infinity.

>   *

> - * Return: On success, 0 and the timeslice is in @interval. Otherwise,

> + * Return: On success, 0 and the timeslice is in @t. Otherwise,

>   * an error code.

>   */

>  static int sched_rr_get_interval(pid_t pid, struct timespec64 *t)

> 



-- 
~Randy
Jonathan Corbet Dec. 11, 2017, 11:25 p.m. UTC | #2
On Mon, 11 Dec 2017 15:14:21 -0800
Randy Dunlap <rdunlap@infradead.org> wrote:

> On 12/11/2017 02:56 PM, Jonathan Corbet wrote:

> > Commit abca5fc535a3e ("sched_rr_get_interval(): move compat to native, get

> > rid of set_fs()") changed the prototype of that function but left the

> > kerneldoc comments unchanged, leading to these docs-build warnings:

> > 

> >   ./kernel/sched/core.c:5113: warning: No description found for parameter 't'

> >   ./kernel/sched/core.c:5113: warning: Excess function parameter 'interval'

> >   			      description in 'sched_rr_get_interval'

> > 

> > Update the documentation (noting that it's not a user-space address

> > anymore) and make the docs build a little quieter.

> > 

> > Signed-off-by: Jonathan Corbet <corbet@lwn.net>  

> 

> I sent a patch for this on DEC-03 to Al, Ingo, PeterZ, and LKML.

> https://marc.info/?l=linux-kernel&m=151233595424349&w=2

> 

> or I could ack your patch.  :)


OK, looking more closely, your patch is more correct than mine and is the
one that should be applied.  Sorry I didn't see it before.

jon
Ingo Molnar Dec. 12, 2017, 10:18 a.m. UTC | #3
* Jonathan Corbet <corbet@lwn.net> wrote:

> On Mon, 11 Dec 2017 15:14:21 -0800

> Randy Dunlap <rdunlap@infradead.org> wrote:

> 

> > On 12/11/2017 02:56 PM, Jonathan Corbet wrote:

> > > Commit abca5fc535a3e ("sched_rr_get_interval(): move compat to native, get

> > > rid of set_fs()") changed the prototype of that function but left the

> > > kerneldoc comments unchanged, leading to these docs-build warnings:

> > > 

> > >   ./kernel/sched/core.c:5113: warning: No description found for parameter 't'

> > >   ./kernel/sched/core.c:5113: warning: Excess function parameter 'interval'

> > >   			      description in 'sched_rr_get_interval'

> > > 

> > > Update the documentation (noting that it's not a user-space address

> > > anymore) and make the docs build a little quieter.

> > > 

> > > Signed-off-by: Jonathan Corbet <corbet@lwn.net>  

> > 

> > I sent a patch for this on DEC-03 to Al, Ingo, PeterZ, and LKML.

> > https://marc.info/?l=linux-kernel&m=151233595424349&w=2

> > 

> > or I could ack your patch.  :)

> 

> OK, looking more closely, your patch is more correct than mine and is the

> one that should be applied.  Sorry I didn't see it before.


Yeah, I have applied Randy's patch to the sched/urgent tree yesterday:

  2064a5ab0470: sched/core: Fix kernel-doc warnings after code movement

It's still not pushed out though, because I'm chasing an (unrelated) regression.

Thanks,

	Ingo
diff mbox series

Patch

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 75554f366fd3..a6e9edb55333 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5100,12 +5100,12 @@  SYSCALL_DEFINE1(sched_get_priority_min, int, policy)
 /**
  * sys_sched_rr_get_interval - return the default timeslice of a process.
  * @pid: pid of the process.
- * @interval: userspace pointer to the timeslice value.
+ * @t: pointer to the timeslice value.
  *
  * this syscall writes the default timeslice value of a given process
- * into the user-space timespec buffer. A value of '0' means infinity.
+ * into the timespec64 buffer. A value of '0' means infinity.
  *
- * Return: On success, 0 and the timeslice is in @interval. Otherwise,
+ * Return: On success, 0 and the timeslice is in @t. Otherwise,
  * an error code.
  */
 static int sched_rr_get_interval(pid_t pid, struct timespec64 *t)