summaryrefslogtreecommitdiff
path: root/arch/i386/kernel/timers
diff options
context:
space:
mode:
authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-09-03 15:56:27 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:06:09 -0700
commit4116c527ea9517623369a5b3b037aedde280d672 (patch)
treedb09f25e4cb4517d7afb911d88478d376dc1b3dd /arch/i386/kernel/timers
parent869f96a00e8f53c7db8470ca9cf72e2e3fa40119 (diff)
[PATCH] hpet: use read_timer_tsc only when CPU has TSC
Only use read_timer_tsc only when CPU has TSC. Thanks to Andrea for pointing this out. Should not be issue on any platforms as all recent systems that has HPET also has CPUs that supports TSC. The patch is still required for correctness. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/timers')
-rw-r--r--arch/i386/kernel/timers/timer_hpet.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/timers/timer_hpet.c b/arch/i386/kernel/timers/timer_hpet.c
index ef8dac5dd33b..cbb3f221ced8 100644
--- a/arch/i386/kernel/timers/timer_hpet.c
+++ b/arch/i386/kernel/timers/timer_hpet.c
@@ -136,6 +136,8 @@ static void delay_hpet(unsigned long loops)
} while ((hpet_end - hpet_start) < (loops));
}
+static struct timer_opts timer_hpet;
+
static int __init init_hpet(char* override)
{
unsigned long result, remain;
@@ -163,6 +165,8 @@ static int __init init_hpet(char* override)
}
set_cyc2ns_scale(cpu_khz/1000);
}
+ /* set this only when cpu_has_tsc */
+ timer_hpet.read_timer = read_timer_tsc;
}
/*
@@ -186,7 +190,6 @@ static struct timer_opts timer_hpet __read_mostly = {
.get_offset = get_offset_hpet,
.monotonic_clock = monotonic_clock_hpet,
.delay = delay_hpet,
- .read_timer = read_timer_tsc,
};
struct init_timer_opts __initdata timer_hpet_init = {