[PATCH] vdso/datapage: use correct clock mode name in comment

[PATCH] vdso/datapage: use correct clock mode name in comment

[Christian Brauner]

While the explanation for time namespace <-> vdso interactions is very
helpful it uses the wrong name in the comment when describing the clock
mode making grepping a bit annoying.

This seems like an accidental oversight when moving from VCLOCK_TIMENS
to VDSO_CLOCKMODE_TIMENS. It seems that
660fd04f9317 ("lib/vdso: Prepare for time namespace support") misspelled
VCLOCK_TIMENS as VLOCK_TIMENS which explains why it got missed when
VCLOCK_TIMENS became VDSO_CLOCKMODE_TIMENS in
2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes").

Update the commit to use VDSO_CLOCKMODE_TIMENS.

Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dmitry Safonov <dima@arista.com>
Cc: Andrei Vagin <avagin@gmail.com>
Fixes: 660fd04f9317 ("lib/vdso: Prepare for time namespace support")
Fixes: 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
 include/vdso/datapage.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
index 5cbc9fcbfd45..7955c56d6b3c 100644
--- a/include/vdso/datapage.h
+++ b/include/vdso/datapage.h
@@ -73,8 +73,8 @@ struct vdso_timestamp {
  *
  * @offset is used by the special time namespace VVAR pages which are
  * installed instead of the real VVAR page. These namespace pages must set
- * @seq to 1 and @clock_mode to VLOCK_TIMENS to force the code into the
- * time namespace slow path. The namespace aware functions retrieve the
+ * @seq to 1 and @clock_mode to VDSO_CLOCKMODE_TIMENS to force the code into
+ * the time namespace slow path. The namespace aware functions retrieve the
  * real system wide VVAR page, read host time and add the per clock offset.
  * For clocks which are not affected by time namespace adjustment the
  * offset must be zero.

base-commit: ae83d0b416db002fe95601e7f97f64b59514d936
-- 
2.26.1

Re: [PATCH] vdso/datapage: use correct clock mode name in comment

[Vincenzo Frascino]

On 4/20/20 11:06 AM, Christian Brauner wrote:
> While the explanation for time namespace <-> vdso interactions is very
> helpful it uses the wrong name in the comment when describing the clock
> mode making grepping a bit annoying.
> 
> This seems like an accidental oversight when moving from VCLOCK_TIMENS
> to VDSO_CLOCKMODE_TIMENS. It seems that
> 660fd04f9317 ("lib/vdso: Prepare for time namespace support") misspelled
> VCLOCK_TIMENS as VLOCK_TIMENS which explains why it got missed when
> VCLOCK_TIMENS became VDSO_CLOCKMODE_TIMENS in
> 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes").
> 
> Update the commit to use VDSO_CLOCKMODE_TIMENS.
>

Probably you want to add that this patch adds no functional changes, just to
make it explicit.
Otherwise:

Acked-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Andy Lutomirski <luto@kernel.org>
> Cc: Dmitry Safonov <dima@arista.com>
> Cc: Andrei Vagin <avagin@gmail.com>
> Fixes: 660fd04f9317 ("lib/vdso: Prepare for time namespace support")
> Fixes: 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes")
> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
> ---
>  include/vdso/datapage.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
> index 5cbc9fcbfd45..7955c56d6b3c 100644
> --- a/include/vdso/datapage.h
> +++ b/include/vdso/datapage.h
> @@ -73,8 +73,8 @@ struct vdso_timestamp {
>   *
>   * @offset is used by the special time namespace VVAR pages which are
>   * installed instead of the real VVAR page. These namespace pages must set
> - * @seq to 1 and @clock_mode to VLOCK_TIMENS to force the code into the
> - * time namespace slow path. The namespace aware functions retrieve the
> + * @seq to 1 and @clock_mode to VDSO_CLOCKMODE_TIMENS to force the code into
> + * the time namespace slow path. The namespace aware functions retrieve the
>   * real system wide VVAR page, read host time and add the per clock offset.
>   * For clocks which are not affected by time namespace adjustment the
>   * offset must be zero.
> 
> base-commit: ae83d0b416db002fe95601e7f97f64b59514d936
> 

-- 
Regards,
Vincenzo

Re: [PATCH] vdso/datapage: use correct clock mode name in comment

[Andrei Vagin]

On Mon, Apr 20, 2020 at 12:06:15PM +0200, Christian Brauner wrote:
> While the explanation for time namespace <-> vdso interactions is very
> helpful it uses the wrong name in the comment when describing the clock
> mode making grepping a bit annoying.
> 
> This seems like an accidental oversight when moving from VCLOCK_TIMENS
> to VDSO_CLOCKMODE_TIMENS. It seems that
> 660fd04f9317 ("lib/vdso: Prepare for time namespace support") misspelled
> VCLOCK_TIMENS as VLOCK_TIMENS which explains why it got missed when
> VCLOCK_TIMENS became VDSO_CLOCKMODE_TIMENS in
> 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes").
> 
> Update the commit to use VDSO_CLOCKMODE_TIMENS.
> 
> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Andy Lutomirski <luto@kernel.org>
> Cc: Dmitry Safonov <dima@arista.com>
> Cc: Andrei Vagin <avagin@gmail.com>
> Fixes: 660fd04f9317 ("lib/vdso: Prepare for time namespace support")
> Fixes: 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes")
> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Acked-by: Andrei Vagin <avagin@gmail.com>

Thanks,
Andrei

[tip: timers/urgent] vdso/datapage: Use correct clock mode name in comment

[tip-bot2 for Christian Brauner]

The following commit has been merged into the timers/urgent branch of tip:

Commit-ID:     ac84bac4062e7fc24f5e2c61c6a414b2a00a29ad
Gitweb:        https://git.kernel.org/tip/ac84bac4062e7fc24f5e2c61c6a414b2a00a29ad
Author:        Christian Brauner <christian.brauner@ubuntu.com>
AuthorDate:    Mon, 20 Apr 2020 12:06:15 +02:00
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Mon, 20 Apr 2020 19:19:52 +02:00

vdso/datapage: Use correct clock mode name in comment

While the explanation for time namespace <-> vdso interactions is very
helpful it uses the wrong name in the comment when describing the clock
mode making grepping a bit annoying.

This seems like an accidental oversight when moving from VCLOCK_TIMENS
to VDSO_CLOCKMODE_TIMENS. It seems that
660fd04f9317 ("lib/vdso: Prepare for time namespace support") misspelled
VCLOCK_TIMENS as VLOCK_TIMENS which explains why it got missed when
VCLOCK_TIMENS became VDSO_CLOCKMODE_TIMENS in
2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes").

Update the comment to use VDSO_CLOCKMODE_TIMENS.

Fixes: 660fd04f9317 ("lib/vdso: Prepare for time namespace support")
Fixes: 2d6b01bd88cc ("lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andrei Vagin <avagin@gmail.com>
Acked-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lkml.kernel.org/r/20200420100615.1549804-1-christian.brauner@ubuntu.com

---
 include/vdso/datapage.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
index 5cbc9fc..7955c56 100644
--- a/include/vdso/datapage.h
+++ b/include/vdso/datapage.h
@@ -73,8 +73,8 @@ struct vdso_timestamp {
  *
  * @offset is used by the special time namespace VVAR pages which are
  * installed instead of the real VVAR page. These namespace pages must set
- * @seq to 1 and @clock_mode to VLOCK_TIMENS to force the code into the
- * time namespace slow path. The namespace aware functions retrieve the
+ * @seq to 1 and @clock_mode to VDSO_CLOCKMODE_TIMENS to force the code into
+ * the time namespace slow path. The namespace aware functions retrieve the
  * real system wide VVAR page, read host time and add the per clock offset.
  * For clocks which are not affected by time namespace adjustment the
  * offset must be zero.