From: Andy Lutomirski <luto@kernel.org>
To: X86 ML <x86@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Borislav Petkov <bpetkov@suse.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Andy Lutomirski <luto@kernel.org>, Rik van Riel <riel@redhat.com>,
Dave Hansen <dave.hansen@intel.com>,
Nadav Amit <namit@vmware.com>, Michal Hocko <mhocko@suse.com>
Subject: [RFC 02/10] x86/mm: Reduce indentation in flush_tlb_func()
Date: Sun, 7 May 2017 05:38:31 -0700 [thread overview]
Message-ID: <210e32be00774ecdb93a1f56dad3cd7a400fd5a5.1494160201.git.luto@kernel.org> (raw)
In-Reply-To: <cover.1494160201.git.luto@kernel.org>
In-Reply-To: <cover.1494160201.git.luto@kernel.org>
The leave_mm() case can just exit the function early so we don't
need to indent the entire remainder of the function.
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
arch/x86/mm/tlb.c | 34 ++++++++++++++++++----------------
1 file changed, 18 insertions(+), 16 deletions(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index fe6471132ea3..4d303864b310 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -237,24 +237,26 @@ static void flush_tlb_func(void *info)
return;
count_vm_tlb_event(NR_TLB_REMOTE_FLUSH_RECEIVED);
- if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) {
- if (f->flush_end == TLB_FLUSH_ALL) {
- local_flush_tlb();
- trace_tlb_flush(TLB_REMOTE_SHOOTDOWN, TLB_FLUSH_ALL);
- } else {
- unsigned long addr;
- unsigned long nr_pages =
- (f->flush_end - f->flush_start) / PAGE_SIZE;
- addr = f->flush_start;
- while (addr < f->flush_end) {
- __flush_tlb_single(addr);
- addr += PAGE_SIZE;
- }
- trace_tlb_flush(TLB_REMOTE_SHOOTDOWN, nr_pages);
- }
- } else
+
+ if (this_cpu_read(cpu_tlbstate.state) != TLBSTATE_OK) {
leave_mm(smp_processor_id());
+ return;
+ }
+ if (f->flush_end == TLB_FLUSH_ALL) {
+ local_flush_tlb();
+ trace_tlb_flush(TLB_REMOTE_SHOOTDOWN, TLB_FLUSH_ALL);
+ } else {
+ unsigned long addr;
+ unsigned long nr_pages =
+ (f->flush_end - f->flush_start) / PAGE_SIZE;
+ addr = f->flush_start;
+ while (addr < f->flush_end) {
+ __flush_tlb_single(addr);
+ addr += PAGE_SIZE;
+ }
+ trace_tlb_flush(TLB_REMOTE_SHOOTDOWN, nr_pages);
+ }
}
void native_flush_tlb_others(const struct cpumask *cpumask,
--
2.9.3
next prev parent reply other threads:[~2017-05-07 22:08 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-07 12:38 [RFC 00/10] x86 TLB flush cleanups, moving toward PCID support Andy Lutomirski
2017-05-07 12:38 ` [RFC 01/10] x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range() Andy Lutomirski
2017-05-11 17:41 ` Borislav Petkov
2017-05-12 3:35 ` Andy Lutomirski
2017-05-07 12:38 ` Andy Lutomirski [this message]
2017-05-07 12:38 ` [RFC 03/10] x86/mm: Make the batched unmap TLB flush API more generic Andy Lutomirski
2017-05-08 15:34 ` Dave Hansen
2017-05-09 13:02 ` Andy Lutomirski
2017-05-09 14:39 ` Mel Gorman
2017-05-09 17:13 ` Dave Hansen
2017-05-09 22:54 ` Andy Lutomirski
2017-05-07 12:38 ` [RFC 04/10] x86/mm: Pass flush_tlb_info to flush_tlb_others() etc Andy Lutomirski
2017-05-11 20:01 ` Nadav Amit
2017-05-12 3:41 ` Andy Lutomirski
2017-05-07 12:38 ` [RFC 05/10] x86/mm: Change the leave_mm() condition for local TLB flushes Andy Lutomirski
2017-05-07 12:38 ` [RFC 06/10] x86/mm: Refactor flush_tlb_mm_range() to merge local and remote cases Andy Lutomirski
2017-05-07 12:38 ` [RFC 07/10] x86/mm: Use new merged flush logic in arch_tlbbatch_flush() Andy Lutomirski
2017-05-07 12:38 ` [RFC 08/10] x86/mm: Remove the UP tlbflush code; always use the formerly SMP code Andy Lutomirski
2017-05-07 12:38 ` [RFC 09/10] x86/mm: Rework lazy TLB to track the actual loaded mm Andy Lutomirski
2017-05-09 20:41 ` Thomas Gleixner
2017-05-09 22:54 ` Andy Lutomirski
2017-05-10 5:57 ` Ingo Molnar
2017-05-10 8:19 ` Thomas Gleixner
2017-05-10 8:24 ` Ingo Molnar
2017-05-10 22:42 ` Andy Lutomirski
2017-05-11 7:13 ` Ingo Molnar
2017-05-12 3:36 ` Andy Lutomirski
2017-05-07 12:38 ` [RFC 10/10] x86,kvm: Teach KVM's VMX code that CR3 isn't a constant Andy Lutomirski
2017-05-07 13:00 ` [RFC 00/10] x86 TLB flush cleanups, moving toward PCID support Ingo Molnar
2017-05-07 16:05 ` Linus Torvalds
2017-05-08 16:36 ` Nadav Amit
2017-05-09 12:43 ` Andy Lutomirski
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