[2/5] timer: Decouple x86_64 specific timer_gettime from generic Linux implementation

  The x86_64 specific timer_gettime implementation (from
./linux/x86_64/timer_gettime.c) reused the Linux generic one (from
./linux/timer_gettime.c) to implement handling some compatible timers
(previously defined in librt, now in libc).

As the generic implementation now is going to also support new (available
from Linux 5.1+) timer_gettime64 syscall, those two implementations have
been decoupled for easier conversion.
---
 sysdeps/unix/sysv/linux/timer_gettime.c        |  7 -------
 sysdeps/unix/sysv/linux/x86_64/timer_gettime.c | 12 ++++++++----
 2 files changed, 8 insertions(+), 11 deletions(-)
  

Dear All,

> The x86_64 specific timer_gettime implementation (from
> ./linux/x86_64/timer_gettime.c) reused the Linux generic one (from
> ./linux/timer_gettime.c) to implement handling some compatible timers
> (previously defined in librt, now in libc).
> 
> As the generic implementation now is going to also support new
> (available from Linux 5.1+) timer_gettime64 syscall, those two
> implementations have been decoupled for easier conversion.
> ---
>  sysdeps/unix/sysv/linux/timer_gettime.c        |  7 -------
>  sysdeps/unix/sysv/linux/x86_64/timer_gettime.c | 12 ++++++++----
>  2 files changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/sysdeps/unix/sysv/linux/timer_gettime.c
> b/sysdeps/unix/sysv/linux/timer_gettime.c index
> 799e2c935e..8d9bef9196 100644 ---
> a/sysdeps/unix/sysv/linux/timer_gettime.c +++
> b/sysdeps/unix/sysv/linux/timer_gettime.c @@ -22,16 +22,9 @@
>  #include <sysdep.h>
>  #include "kernel-posix-timers.h"
>  
> -
> -#ifdef timer_gettime_alias
> -# define timer_gettime timer_gettime_alias
> -#endif
> -
> -
>  int
>  timer_gettime (timer_t timerid, struct itimerspec *value)
>  {
> -#undef timer_gettime
>    struct timer *kt = (struct timer *) timerid;
>  
>    /* Delete the kernel timer object.  */
> diff --git a/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c
> b/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c index
> 54daee2f4c..5755cc44fb 100644 ---
> a/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c +++
> b/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c @@ -17,13 +17,17 @@
>     not, see <https://www.gnu.org/licenses/>.  */
>  
>  #include <shlib-compat.h>
> +#include <sysdep.h>
> +#include "kernel-posix-timers.h"
>  #include "compat-timer.h"
>  
> +int
> +__timer_gettime_new (timer_t timerid, struct itimerspec *value)
> +{
> +  struct timer *kt = (struct timer *) timerid;
>  
> -#define timer_gettime_alias __timer_gettime_new
> -#include <sysdeps/unix/sysv/linux/timer_gettime.c>
> -
> -#undef timer_gettime
> +  return INLINE_SYSCALL (timer_gettime, 2, kt->ktimerid, value);
> +}
>  versioned_symbol (librt, __timer_gettime_new, timer_gettime,
> GLIBC_2_3_3); 
>  

Gentle ping.


Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de
  

On 11/11/2019 18:47, Lukasz Majewski wrote:
> The x86_64 specific timer_gettime implementation (from
> ./linux/x86_64/timer_gettime.c) reused the Linux generic one (from
> ./linux/timer_gettime.c) to implement handling some compatible timers
> (previously defined in librt, now in libc).
> 
> As the generic implementation now is going to also support new (available
> from Linux 5.1+) timer_gettime64 syscall, those two implementations have
> been decoupled for easier conversion.

LGTM with a nit below.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

> ---
>  sysdeps/unix/sysv/linux/timer_gettime.c        |  7 -------
>  sysdeps/unix/sysv/linux/x86_64/timer_gettime.c | 12 ++++++++----
>  2 files changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/sysdeps/unix/sysv/linux/timer_gettime.c b/sysdeps/unix/sysv/linux/timer_gettime.c
> index 799e2c935e..8d9bef9196 100644
> --- a/sysdeps/unix/sysv/linux/timer_gettime.c
> +++ b/sysdeps/unix/sysv/linux/timer_gettime.c
> @@ -22,16 +22,9 @@
>  #include <sysdep.h>
>  #include "kernel-posix-timers.h"
>  
> -
> -#ifdef timer_gettime_alias
> -# define timer_gettime timer_gettime_alias
> -#endif
> -
> -
>  int
>  timer_gettime (timer_t timerid, struct itimerspec *value)
>  {
> -#undef timer_gettime
>    struct timer *kt = (struct timer *) timerid;
>  
>    /* Delete the kernel timer object.  */

Ok.

> diff --git a/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c b/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c
> index 54daee2f4c..5755cc44fb 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c
> +++ b/sysdeps/unix/sysv/linux/x86_64/timer_gettime.c
> @@ -17,13 +17,17 @@
>     not, see <https://www.gnu.org/licenses/>.  */
>  
>  #include <shlib-compat.h>
> +#include <sysdep.h>
> +#include "kernel-posix-timers.h"
>  #include "compat-timer.h"
>  
> +int
> +__timer_gettime_new (timer_t timerid, struct itimerspec *value)
> +{
> +  struct timer *kt = (struct timer *) timerid;
>  
> -#define timer_gettime_alias __timer_gettime_new
> -#include <sysdeps/unix/sysv/linux/timer_gettime.c>
> -
> -#undef timer_gettime
> +  return INLINE_SYSCALL (timer_gettime, 2, kt->ktimerid, value);

Use INLINE_SYSCALL_CALL.

> +}
>  versioned_symbol (librt, __timer_gettime_new, timer_gettime, GLIBC_2_3_3);
>  
>  
>