| commit | 23970e389e9cee43c4b41023935e1417271708b2 | |
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| Fri, 14 Aug 2009 13:47:32 +0000 (14 15:47 +0200) | ||
| committer | Thomas Gleixner <tglx@linutronix.de> | |
| Sat, 15 Aug 2009 08:55:47 +0000 (15 10:55 +0200) | ||
| tree | d97d299cf74c44cf7ceb4c04c82dafc451fbbfbb | treesnapshot (tar.gz zip) |
| parent | d4f587c67fc39e0030ddd718675e252e208da4d7 | commitdiff |
timekeeping: Introduce read_boot_clock
Add the new function read_boot_clock to get the exact time the system
has been started. For architectures without support for exact boot
time a new weak function is added that returns 0. Use the exact boot
time to initialize wall_to_monotonic, or xtime if the read_boot_clock
returned 0.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <20090814134811.296703241@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Add the new function read_boot_clock to get the exact time the system
has been started. For architectures without support for exact boot
time a new weak function is added that returns 0. Use the exact boot
time to initialize wall_to_monotonic, or xtime if the read_boot_clock
returned 0.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <20090814134811.296703241@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| arch/s390/kernel/time.c | diffblobblamehistory | |
| include/linux/time.h | diffblobblamehistory | |
| kernel/time/timekeeping.c | diffblobblamehistory |