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author | Rob Herring <rob.herring@calxeda.com> | 2013-04-01 13:53:38 -0500 |
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committer | Rob Herring <rob.herring@calxeda.com> | 2013-04-10 18:27:12 -0500 |
commit | 7e48c0b9d9ab07c92cd26f167010cd5a50eb0cec (patch) | |
tree | 05e8d8f956f1b035105fc947cb5ec676a0ddece8 /arch/arm/kernel | |
parent | c115739da801ea1ea20c48e2991ce6761496bef1 (diff) | |
download | op-kernel-dev-7e48c0b9d9ab07c92cd26f167010cd5a50eb0cec.zip op-kernel-dev-7e48c0b9d9ab07c92cd26f167010cd5a50eb0cec.tar.gz |
ARM: make sched_clock just call a function pointer
This converts sched_clock to simply a call to a function pointer in order
to allow overriding it. This will allow for use with 64-bit counters where
overflow handling is not needed.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r-- | arch/arm/kernel/sched_clock.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c index 040168e..8805848 100644 --- a/arch/arm/kernel/sched_clock.c +++ b/arch/arm/kernel/sched_clock.c @@ -165,12 +165,19 @@ void __init setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate) pr_debug("Registered %pF as sched_clock source\n", read); } -unsigned long long notrace sched_clock(void) +static unsigned long long notrace sched_clock_32(void) { u32 cyc = read_sched_clock(); return cyc_to_sched_clock(cyc, sched_clock_mask); } +unsigned long long __read_mostly (*sched_clock_func)(void) = sched_clock_32; + +unsigned long long notrace sched_clock(void) +{ + return sched_clock_func(); +} + void __init sched_clock_postinit(void) { /* |