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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-24 16:17:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-24 16:17:41 -0700 |
| commit | 7be141d0554921751db103b54e9f794956aa4f65 (patch) | |
| tree | b4355211d0000cfac547f1357104e62c96f3ac14 /arch/x86 | |
| parent | 44744bb344abe032b387d361209038d2956e8c75 (diff) | |
| parent | 80b304fd00e8b667775ff791121b61ecd7cd0c03 (diff) | |
| download | linux-7be141d0554921751db103b54e9f794956aa4f65.tar.gz linux-7be141d0554921751db103b54e9f794956aa4f65.tar.bz2 linux-7be141d0554921751db103b54e9f794956aa4f65.zip | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"A couple of EFI fixes, plus misc fixes all around the map"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm64: Store Runtime Services revision
firmware: Do not use WARN_ON(!spin_is_locked())
x86_32, entry: Clean up sysenter_badsys declaration
x86/doc: Fix the 'tlb_single_page_flush_ceiling' sysconfig path
x86/mm: Fix sparse 'tlb_single_page_flush_ceiling' warning and make the variable read-mostly
x86/mm: Fix RCU splat from new TLB tracepoints
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 2 | ||||
| -rw-r--r-- | arch/x86/mm/tlb.c | 10 |
2 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 47c410d99f5d..4b0e1dfa2226 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -683,7 +683,7 @@ END(syscall_badsys) sysenter_badsys: movl $-ENOSYS,%eax jmp sysenter_after_call -END(syscall_badsys) +END(sysenter_badsys) CFI_ENDPROC .macro FIXUP_ESPFIX_STACK diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 1fe33987de02..ee61c36d64f8 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -49,7 +49,13 @@ void leave_mm(int cpu) if (cpumask_test_cpu(cpu, mm_cpumask(active_mm))) { cpumask_clear_cpu(cpu, mm_cpumask(active_mm)); load_cr3(swapper_pg_dir); - trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL); + /* + * This gets called in the idle path where RCU + * functions differently. Tracing normally + * uses RCU, so we have to call the tracepoint + * specially here. + */ + trace_tlb_flush_rcuidle(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL); } } EXPORT_SYMBOL_GPL(leave_mm); @@ -174,7 +180,7 @@ void flush_tlb_current_task(void) * * This is in units of pages. */ -unsigned long tlb_single_page_flush_ceiling = 33; +static unsigned long tlb_single_page_flush_ceiling __read_mostly = 33; void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long vmflag) |