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

Message ID 20191111214758.3677-3-lukma@denx.de
State New
Headers show
Series
  • y2038: linux: timer_[sg]ettime conversion to 64 bit time
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Commit Message

Lukasz Majewski Nov. 11, 2019, 9:47 p.m. UTC
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(-)

Comments

Lukasz Majewski Nov. 27, 2019, 4:59 p.m. UTC | #1
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

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Adhemerval Zanella Dec. 4, 2019, 7:41 p.m. UTC | #2
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);
>  
>  
>

Patch
diff mbox series

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);