The patch titled
revert x86_64-mm-getcpu-vsyscall
has been removed from the -mm tree. Its filename is
revert-x86_64-mm-getcpu-vsyscall.patch
This patch was probably dropped from -mm because
it has now been merged into a subsystem tree or
into Linus's tree, or because it was folded into
its parent patch in the -mm tree.
------------------------------------------------------
Subject: revert x86_64-mm-getcpu-vsyscall
From: Andrew Morton <akpm@xxxxxxxx>
Cc: Vojtech Pavlik <vojtech@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/x86_64/kernel/time.c | 6 ++----
arch/x86_64/kernel/vmlinux.lds.S | 7 -------
arch/x86_64/kernel/vsyscall.c | 20 ++------------------
include/asm-x86_64/vsyscall.h | 9 ---------
4 files changed, 4 insertions(+), 38 deletions(-)
diff -puN arch/x86_64/kernel/time.c~revert-x86_64-mm-getcpu-vsyscall arch/x86_64/kernel/time.c
--- 25/arch/x86_64/kernel/time.c~revert-x86_64-mm-getcpu-vsyscall 2006-05-28 18:46:23.511557504 -0700
+++ 25-akpm/arch/x86_64/kernel/time.c 2006-05-28 18:46:23.540553096 -0700
@@ -959,7 +959,7 @@ __cpuinit int unsynchronized_tsc(void)
static void __init time_init_rdtsc(void *info)
{
int p;
- p = smp_processor_id() | (cpu_to_node(smp_processor_id()) << 16);
+ p = smp_processor_id();
write_rdtscp_aux(p);
}
@@ -976,9 +976,7 @@ void time_init_gtod(void)
if (cpu_has(&boot_cpu_data, X86_FEATURE_RDTSCP)) {
printk(KERN_INFO "time.c: Initializing RDTSCP feature.\n");
on_each_cpu(time_init_rdtsc, NULL, 1, 1);
- vgetcpu_mode = VGETCPU_RDTSCP;
- } else
- vgetcpu_mode = VGETCPU_CPUID;
+ }
if (vxtime.hpet_address && notsc) {
timetype = hpet_use_timer ? "HPET" : "PIT/HPET";
diff -puN arch/x86_64/kernel/vmlinux.lds.S~revert-x86_64-mm-getcpu-vsyscall arch/x86_64/kernel/vmlinux.lds.S
--- 25/arch/x86_64/kernel/vmlinux.lds.S~revert-x86_64-mm-getcpu-vsyscall 2006-05-28 18:46:23.520556136 -0700
+++ 25-akpm/arch/x86_64/kernel/vmlinux.lds.S 2006-05-28 18:46:23.540553096 -0700
@@ -100,13 +100,6 @@ SECTIONS
.vxtime : AT(VLOAD(.vxtime)) { *(.vxtime) }
vxtime = VVIRT(.vxtime);
- .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
- vgetcpu_mode = VVIRT(.vgetcpu_mode);
-
- . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
- .cpu_to_node : AT(VLOAD(.cpu_to_node)) { *(.cpu_to_node) }
- cpu_to_node = VVIRT(.cpu_to_node);
-
.wall_jiffies : AT(VLOAD(.wall_jiffies)) { *(.wall_jiffies) }
wall_jiffies = VVIRT(.wall_jiffies);
diff -puN arch/x86_64/kernel/vsyscall.c~revert-x86_64-mm-getcpu-vsyscall arch/x86_64/kernel/vsyscall.c
--- 25/arch/x86_64/kernel/vsyscall.c~revert-x86_64-mm-getcpu-vsyscall 2006-05-28 18:46:23.528554920 -0700
+++ 25-akpm/arch/x86_64/kernel/vsyscall.c 2006-05-28 18:46:23.539553248 -0700
@@ -38,8 +38,6 @@
int __sysctl_vsyscall __section_sysctl_vsyscall = 1;
seqlock_t __xtime_lock __section_xtime_lock = SEQLOCK_UNLOCKED;
-int __vgetcpu_mode __section_vgetcpu_mode;
-unsigned char __cpu_to_node[NR_CPUS] __section_cpu_to_node;
#include <asm/unistd.h>
@@ -129,22 +127,9 @@ time_t __vsyscall(1) vtime(time_t *t)
return __xtime.tv_sec;
}
-long __vsyscall(2) vgetcpu(int *cpu, int *node)
+long __vsyscall(2) venosys_0(void)
{
- unsigned int dummy, p;
-
- if (__vgetcpu_mode == VGETCPU_RDTSCP) {
- rdtscp(t1, t2, p);
- } else {
- cpuid(1, &dummy, &p, &dummy, &dummy);
- p >>= 24;
- p |= (__cpu_to_node[p] << 16);
- }
- if (cpu)
- *cpu = p & 0xffff;
- if (node)
- *node = p >> 16;
- return 0;
+ return -ENOSYS;
}
long __vsyscall(3) venosys_1(void)
@@ -229,7 +214,6 @@ static int __init vsyscall_init(void)
VSYSCALL_ADDR(__NR_vgettimeofday)));
BUG_ON((unsigned long) &vtime != VSYSCALL_ADDR(__NR_vtime));
BUG_ON((VSYSCALL_ADDR(0) != __fix_to_virt(VSYSCALL_FIRST_PAGE)));
- BUG_ON((unsigned long) &vgetcpu != VSYSCALL_ADDR(__NR_vgetcpu));
map_vsyscall();
#ifdef CONFIG_SYSCTL
register_sysctl_table(kernel_root_table2, 0);
diff -puN include/asm-x86_64/vsyscall.h~revert-x86_64-mm-getcpu-vsyscall include/asm-x86_64/vsyscall.h
--- 25/include/asm-x86_64/vsyscall.h~revert-x86_64-mm-getcpu-vsyscall 2006-05-28 18:46:23.537553552 -0700
+++ 25-akpm/include/asm-x86_64/vsyscall.h 2006-05-28 18:46:23.539553248 -0700
@@ -6,7 +6,6 @@
enum vsyscall_num {
__NR_vgettimeofday,
__NR_vtime,
- __NR_vgetcpu,
};
#define VSYSCALL_START (-10UL << 20)
@@ -17,8 +16,6 @@ enum vsyscall_num {
#ifdef __KERNEL__
#define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16)))
-#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
-#define __section_cpu_to_node __attribute__ ((unused, __section__ (".cpu_to_node"), aligned(16)))
#define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16)))
#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
#define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16)))
@@ -30,9 +27,6 @@ enum vsyscall_num {
#define VXTIME_HPET 2
#define VXTIME_PMTMR 3
-#define VGETCPU_RDTSCP 1
-#define VGETCPU_CPUID 2
-
struct vxtime_data {
long hpet_address; /* HPET base address */
int last;
@@ -47,8 +41,6 @@ struct vxtime_data {
/* vsyscall space (readonly) */
extern struct vxtime_data __vxtime;
-extern int __vgetcpu_mode;
-extern unsigned char __cpu_to_node[];
extern struct timespec __xtime;
extern volatile unsigned long __jiffies;
extern unsigned long __wall_jiffies;
@@ -57,7 +49,6 @@ extern seqlock_t __xtime_lock;
/* kernel space (writeable) */
extern struct vxtime_data vxtime;
-extern int vgetcpu_mode;
extern unsigned long wall_jiffies;
extern struct timezone sys_tz;
extern int sysctl_vsyscall;
_
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