android_kernel_xiaomi_sm8350/arch/x86/vdso
Ingo Molnar 4307d1e5ad x86: ignore the sys_getcpu() tcache parameter
dont use the vgetcpu tcache - it's causing problems with tasks
migrating, they'll see the old cache up to a jiffy after the
migration, further increasing the costs of the migration.

In the worst case they see a complete bogus information from
the tcache, when a sys_getcpu() call "invalidated" the cache
info by incrementing the jiffies _and_ the cpuid info in the
cache and the following vdso_getcpu() call happens after
vdso_jiffies have been incremented.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-17 16:27:00 +01:00
..
.gitignore x86_64: move vdso 2007-10-11 11:17:10 +02:00
Makefile x86: do not use $(ARCH) when not needed 2007-11-12 21:02:20 +01:00
vclock_gettime.c x86_64: move vdso 2007-10-11 11:17:10 +02:00
vdso-note.S x86_64: move vdso 2007-10-11 11:17:10 +02:00
vdso-start.S x86_64: move vdso 2007-10-11 11:17:10 +02:00
vdso.lds.S x86: vdso linker script cleanup 2007-10-17 20:17:06 +02:00
vdso.S x86_64: move vdso 2007-10-11 11:17:10 +02:00
vextern.h x86_64: move vdso 2007-10-11 11:17:10 +02:00
vgetcpu.c x86: ignore the sys_getcpu() tcache parameter 2007-11-17 16:27:00 +01:00
vma.c x86_64: move vdso 2007-10-11 11:17:10 +02:00
voffset.h x86_64: move vdso 2007-10-11 11:17:10 +02:00
vvar.c x86: vdso put vars in rodata 2007-10-17 20:16:43 +02:00