clocksource: pass clocksource to read() callback

Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/arch/blackfin/kernel/time-ts.c b/arch/blackfin/kernel/time-ts.c
index 0ed2badfd746..27646121280a 100644
--- a/arch/blackfin/kernel/time-ts.c
+++ b/arch/blackfin/kernel/time-ts.c
@@ -58,16 +58,11 @@ static inline unsigned long long cycles_2_ns(cycle_t cyc)
         return (cyc * cyc2ns_scale) >> CYC2NS_SCALE_FACTOR;
 }
 
-static cycle_t read_cycles(void)
+static cycle_t read_cycles(struct clocksource *cs)
 {
         return __bfin_cycles_off + (get_cycles() << __bfin_cycles_mod);
 }
 
-unsigned long long sched_clock(void)
-{
-        return cycles_2_ns(read_cycles());
-}
-
 static struct clocksource clocksource_bfin = {
         .name           = "bfin_cycles",
         .rating         = 350,
@@ -77,6 +72,11 @@ static struct clocksource clocksource_bfin = {
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
+unsigned long long sched_clock(void)
+{
+        return cycles_2_ns(read_cycles(&clocksource_bfin));
+}
+
 static int __init bfin_clocksource_init(void)
 {
         set_cyc2ns_scale(get_cclk() / 1000);