| commit | 08ec3c2d45bac41c782acb4e3331ac5881b2c68a | |
| author | David Howells <dhowells@redhat.com> | |
| Wed, 24 Sep 2008 16:48:31 +0000 (24 17:48 +0100) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Wed, 24 Sep 2008 23:38:17 +0000 (24 16:38 -0700) | ||
| tree | ed05cb5eed4f2a7abd689b005449d8f3f4556372 | treesnapshot (tar.gz zip) |
| parent | b4f151ff899362fec952c45d166252c9912c041f | commitdiff |
MN10300: Make sched_clock() report time since boot
Make sched_clock() report time since boot rather than time since last
timer interrupt.
Make sched_clock() expand and scale the 32-bit TSC value running at
IOCLK speed (~33MHz) to a 64-bit nanosecond counter, using cnt32_to_63()
acquired from the ARM arch and without using slow DIVU instructions
every call.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make sched_clock() report time since boot rather than time since last
timer interrupt.
Make sched_clock() expand and scale the 32-bit TSC value running at
IOCLK speed (~33MHz) to a 64-bit nanosecond counter, using cnt32_to_63()
acquired from the ARM arch and without using slow DIVU instructions
every call.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| arch/mn10300/kernel/time.c | diffblobblamehistory |