x86/mm: Stop calling leave_mm() in idle code
authorAndy Lutomirski <luto@kernel.org>
Thu, 29 Jun 2017 15:53:18 +0000 (08:53 -0700)
committerIngo Molnar <mingo@kernel.org>
Wed, 5 Jul 2017 08:52:57 +0000 (10:52 +0200)
commit43858b4f25cf0adc5c2ca9cf5ce5fdf2532941e5
treefebc629e329d6918ac4acd3915aa8c2681d8b078
parent94b1b03b519b81c494900cb112aa00ed205cc2d9
x86/mm: Stop calling leave_mm() in idle code

Now that lazy TLB suppresses all flush IPIs (as opposed to all but
the first), there's no need to leave_mm() when going idle.

This means we can get rid of the rcuidle hack in
switch_mm_irqs_off() and we can unexport leave_mm().

This also removes acpi_unlazy_tlb() from the x86 and ia64 headers,
since it has no callers any more.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Nadav Amit <nadav.amit@gmail.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/03c699cfd6021e467be650d6b73deaccfe4b4bd7.1498751203.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/ia64/include/asm/acpi.h
arch/x86/include/asm/acpi.h
arch/x86/mm/tlb.c
drivers/acpi/processor_idle.c
drivers/idle/intel_idle.c