diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2009-12-23 13:18:54 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-01-12 18:19:34 +0100 |
| commit | c6a3c851a287980e47b45bf191a3b78d9d8508e2 (patch) | |
| tree | b58339ebc32655ecff45e1f2d32c9ec26dc881f8 | |
| parent | 98bea6fc87390b6a12f595ad06fc686712435f94 (diff) | |
MIPS: Octeon: Add sched_clock() to csrc-octeon.c
With the advent of function graph tracing on MIPS, Octeon needs a high
precision sched_clock() implementation. Without it, most timing
numbers are reported as 0.000.
This new sched_clock just uses the 64-bit cycle counter appropriately
scaled.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/805/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/cavium-octeon/csrc-octeon.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/mips/cavium-octeon/csrc-octeon.c b/arch/mips/cavium-octeon/csrc-octeon.c index 96110f217dcd..96df821fbd81 100644 --- a/arch/mips/cavium-octeon/csrc-octeon.c +++ b/arch/mips/cavium-octeon/csrc-octeon.c @@ -50,6 +50,13 @@ static struct clocksource clocksource_mips = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +unsigned long long notrace sched_clock(void) +{ + return clocksource_cyc2ns(read_c0_cvmcount(), + clocksource_mips.mult, + clocksource_mips.shift); +} + void __init plat_time_init(void) { clocksource_mips.rating = 300; |