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| author | Dimitri Sivanich <sivanich@sgi.com> | 2009-11-20 15:48:26 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-23 19:41:30 +0100 |
| commit | 581f202bcd60acbc3af1f5faa429e570c512f8a3 (patch) | |
| tree | ce54e18f1f77eb43b8e79730e72247b3c97a999b /arch/x86 | |
| parent | 4a4de9c7d7111ce4caf422b856756125d8304f9d (diff) | |
| download | blackbird-op-linux-581f202bcd60acbc3af1f5faa429e570c512f8a3.tar.gz blackbird-op-linux-581f202bcd60acbc3af1f5faa429e570c512f8a3.zip | |
x86: UV RTC: Always enable RTC clocksource
Always enable the RTC clocksource on UV systems.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
LKML-Reference: <20091120214826.GA20016@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/uv_time.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c index 3da7b1d8bfd3..3c84aa001c11 100644 --- a/arch/x86/kernel/uv_time.c +++ b/arch/x86/kernel/uv_time.c @@ -74,7 +74,6 @@ struct uv_rtc_timer_head { */ static struct uv_rtc_timer_head **blade_info __read_mostly; -static int uv_rtc_enable; static int uv_rtc_evt_enable; /* @@ -335,14 +334,6 @@ static void uv_rtc_interrupt(void) ced->event_handler(ced); } -static int __init uv_enable_rtc(char *str) -{ - uv_rtc_enable = 1; - - return 1; -} -__setup("uvrtc", uv_enable_rtc); - static int __init uv_enable_evt_rtc(char *str) { uv_rtc_evt_enable = 1; @@ -364,12 +355,16 @@ static __init int uv_rtc_setup_clock(void) { int rc; - if (!uv_rtc_enable || !is_uv_system() || x86_platform_ipi_callback) + if (!is_uv_system()) return -ENODEV; clocksource_uv.mult = clocksource_hz2mult(sn_rtc_cycles_per_second, clocksource_uv.shift); + /* If single blade, prefer tsc */ + if (uv_num_possible_blades() == 1) + clocksource_uv.rating = 250; + rc = clocksource_register(&clocksource_uv); if (rc) printk(KERN_INFO "UV RTC clocksource failed rc %d\n", rc); @@ -377,7 +372,7 @@ static __init int uv_rtc_setup_clock(void) printk(KERN_INFO "UV RTC clocksource registered freq %lu MHz\n", sn_rtc_cycles_per_second/(unsigned long)1E6); - if (rc || !uv_rtc_evt_enable) + if (rc || !uv_rtc_evt_enable || x86_platform_ipi_callback) return rc; /* Setup and register clockevents */ |
