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authorThomas Gleixner <tglx@linutronix.de>2010-10-15 21:08:14 +0200
committerThomas Gleixner <tglx@linutronix.de>2010-10-15 21:18:59 +0200
commit40ffa93791985ab300fd488072e9f37ccf72e88c (patch)
treea20192de6aa86ad4f69251cde0bcda86f20b5ec5 /arch
parent234bb549eea16ec7d5207ba747fb8dbf489e64c1 (diff)
x86: Remove stale pmtimer_64.c
This file is unused since the apic unification in 2.6.29, but nobody noticed. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/Makefile1
-rw-r--r--arch/x86/kernel/pmtimer_64.c69
2 files changed, 0 insertions, 70 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 0925676266b..dd9a2e459c7 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -120,7 +120,6 @@ obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
obj-$(CONFIG_X86_UV) += tlb_uv.o bios_uv.o uv_irq.o uv_sysfs.o uv_time.o
- obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o
obj-$(CONFIG_AUDIT) += audit_64.o
obj-$(CONFIG_GART_IOMMU) += pci-gart_64.o aperture_64.o
diff --git a/arch/x86/kernel/pmtimer_64.c b/arch/x86/kernel/pmtimer_64.c
deleted file mode 100644
index b112406f199..00000000000
--- a/arch/x86/kernel/pmtimer_64.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* Ported over from i386 by AK, original copyright was:
- *
- * (C) Dominik Brodowski <linux@brodo.de> 2003
- *
- * Driver to use the Power Management Timer (PMTMR) available in some
- * southbridges as primary timing source for the Linux kernel.
- *
- * Based on parts of linux/drivers/acpi/hardware/hwtimer.c, timer_pit.c,
- * timer_hpet.c, and on Arjan van de Ven's implementation for 2.4.
- *
- * This file is licensed under the GPL v2.
- *
- * Dropped all the hardware bug workarounds for now. Hopefully they
- * are not needed on 64bit chipsets.
- */
-
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/init.h>
-#include <linux/cpumask.h>
-#include <linux/acpi_pmtmr.h>
-
-#include <asm/io.h>
-#include <asm/proto.h>
-#include <asm/msr.h>
-#include <asm/vsyscall.h>
-
-static inline u32 cyc2us(u32 cycles)
-{
- /* The Power Management Timer ticks at 3.579545 ticks per microsecond.
- * 1 / PM_TIMER_FREQUENCY == 0.27936511 =~ 286/1024 [error: 0.024%]
- *
- * Even with HZ = 100, delta is at maximum 35796 ticks, so it can
- * easily be multiplied with 286 (=0x11E) without having to fear
- * u32 overflows.
- */
- cycles *= 286;
- return (cycles >> 10);
-}
-
-static unsigned pmtimer_wait_tick(void)
-{
- u32 a, b;
- for (a = b = inl(pmtmr_ioport) & ACPI_PM_MASK;
- a == b;
- b = inl(pmtmr_ioport) & ACPI_PM_MASK)
- cpu_relax();
- return b;
-}
-
-/* note: wait time is rounded up to one tick */
-void pmtimer_wait(unsigned us)
-{
- u32 a, b;
- a = pmtimer_wait_tick();
- do {
- b = inl(pmtmr_ioport);
- cpu_relax();
- } while (cyc2us(b - a) < us);
-}
-
-static int __init nopmtimer_setup(char *s)
-{
- pmtmr_ioport = 0;
- return 1;
-}
-
-__setup("nopmtimer", nopmtimer_setup);