The patch titled
x86_64: move __vgetcpu_mode & __jiffies to the vsyscall_2 zone
has been removed from the -mm tree. Its filename was
x86_64-move-__vgetcpu_mode-__jiffies-to-the-vsyscall_2-zone.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: x86_64: move __vgetcpu_mode & __jiffies to the vsyscall_2 zone
From: Eric Dumazet <dada1@xxxxxxxxxxxxx>
We apparently hit the 1024 limit of vsyscall_0 zone when some debugging
options are set, or if __vsyscall_gtod_data is 64 bytes larger.
In order to save 128 bytes from the vsyscall_0 zone, we move __vgetcpu_mode
& __jiffies to vsyscall_2 zone where they really belong, since they are
used only from vgetcpu() (which is in this vsyscall_2 area).
After patch is applied, new layout is :
ffffffffff600000 T vgettimeofday
ffffffffff60004e t vsysc2
ffffffffff600140 t vread_hpet
ffffffffff600150 t vread_tsc
ffffffffff600180 D __vsyscall_gtod_data
ffffffffff600400 T vtime
ffffffffff600413 t vsysc1
ffffffffff600800 T vgetcpu
ffffffffff600870 D __vgetcpu_mode
ffffffffff600880 D __jiffies
ffffffffff600c00 T venosys_1
Signed-off-by: Eric Dumazet <dada1@xxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86_64/kernel/vmlinux.lds.S | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff -puN arch/x86_64/kernel/vmlinux.lds.S~x86_64-move-__vgetcpu_mode-__jiffies-to-the-vsyscall_2-zone arch/x86_64/kernel/vmlinux.lds.S
--- a/arch/x86_64/kernel/vmlinux.lds.S~x86_64-move-__vgetcpu_mode-__jiffies-to-the-vsyscall_2-zone
+++ a/arch/x86_64/kernel/vmlinux.lds.S
@@ -98,6 +98,12 @@ SECTIONS
{ *(.vsyscall_clock) }
vsyscall_clock = VVIRT(.vsyscall_clock);
+
+ .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1))
+ { *(.vsyscall_1) }
+ .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2))
+ { *(.vsyscall_2) }
+
.vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
vgetcpu_mode = VVIRT(.vgetcpu_mode);
@@ -105,10 +111,6 @@ SECTIONS
.jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
jiffies = VVIRT(.jiffies);
- .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1))
- { *(.vsyscall_1) }
- .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2))
- { *(.vsyscall_2) }
.vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3))
{ *(.vsyscall_3) }
_
Patches currently in -mm which might be from dada1@xxxxxxxxxxxxx are
origin.patch
slab-use-num_possible_cpus-in-enable_cpucache.patch
slab-dont-allocate-empty-shared-caches.patch
slab-numa-kmem_cache-diet.patch
optimize-timespec_trunc.patch
procfs-reorder-struct-pid_dentry-to-save-space-on-64bit-archs-and-constify-them.patch
vfs-delay-the-dentry-name-generation-on-sockets-and.patch
getrusage-fill-ru_inblock-and-ru_oublock-fields-if-possible.patch
time-smp-friendly-alignment-of-struct-clocksource.patch
ignore-stolen-time-in-the-softlockup-watchdog.patch
ignore-stolen-time-in-the-softlockup-watchdog-fix.patch
make-static-counters-in-new_inode-and-iunique-be-32-bits.patch
speedup-divides-by-cpu_power-in-scheduler.patch
-
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