Nadav Amit 4ce94eabac x86/mm/tlb: Flush remote and local TLBs concurrently ... To improve TLB shootdown performance, flush the remote and local TLBs concurrently. Introduce flush_tlb_multi() that does so. Introduce paravirtual versions of flush_tlb_multi() for KVM, Xen and hyper-v (Xen and hyper-v are only compile-tested). While the updated smp infrastructure is capable of running a function on a single local core, it is not optimized for this case. The multiple function calls and the indirect branch introduce some overhead, and might make local TLB flushes slower than they were before the recent changes. Before calling the SMP infrastructure, check if only a local TLB flush is needed to restore the lost performance in this common case. This requires to check mm_cpumask() one more time, but unless this mask is updated very frequently, this should impact performance negatively. Signed-off-by: Nadav Amit <namit@vmware.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> # Hyper-v parts Reviewed-by: Juergen Gross <jgross@suse.com> # Xen and paravirt parts Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/r/20210220231712.2475218-5-namit@vmware.com		2021-03-06 12:59:10 +01:00
..
alpha	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
arc	arch: setup PF_IO_WORKER threads like PF_KTHREAD	2021-02-21 17:25:22 -07:00
arm	xen: branch for v5.12-rc2	2021-03-04 11:24:47 -08:00
arm64	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
csky	arch/csky patches for 5.12-rc1	2021-02-28 12:06:45 -08:00
h8300	arch: setup PF_IO_WORKER threads like PF_KTHREAD	2021-02-21 17:25:22 -07:00
hexagon	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
ia64	ia64: don't call handle_signal() unless there's actually a signal queued	2021-03-02 17:22:11 -07:00
m68k	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
microblaze	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
mips	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
nds32	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
nios2	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
openrisc	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
parisc	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
powerpc	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
riscv	RISC-V Patches for the 5.12 Merge Window, Part 2	2021-02-28 12:01:23 -08:00
s390	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
sh	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
sparc	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
um	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
x86	x86/mm/tlb: Flush remote and local TLBs concurrently	2021-03-06 12:59:10 +01:00
xtensa	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
.gitignore
Kconfig	Rework of the X86 irq stack handling:	2021-02-24 16:32:23 -08:00