@@ -6088,7 +6088,6 @@ L: devel@linuxdriverproject.org
S: Maintained
F: Documentation/networking/netvsc.txt
F: arch/x86/include/asm/mshyperv.h
-F: arch/x86/include/asm/trace/hyperv.h
F: arch/x86/include/uapi/asm/hyperv.h
F: arch/x86/kernel/cpu/mshyperv.c
F: arch/x86/hyperv
@@ -6,10 +6,6 @@
#include <asm/tlbflush.h>
#include <asm/msr.h>
#include <asm/fpu/api.h>
-#include <asm/trace/hyperv.h>
-
-#define CREATE_TRACE_POINTS
-DEFINE_TRACE(hyperv_mmu_flush_tlb_others);
/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
struct hv_flush_pcpu {
@@ -79,8 +75,6 @@ static void hyperv_flush_tlb_others(const struct cpumask *cpus,
u64 status = -1ULL;
int cpu, vcpu, gva_n, max_gvas;
- trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end);
-
if (!pcpu_flush || !hv_hypercall_pg)
goto do_native;
@@ -167,8 +161,6 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus,
u64 status = -1ULL;
int nr_bank = 0, max_gvas, gva_n;
- trace_hyperv_mmu_flush_tlb_others(cpus, mm, start, end);
-
if (!pcpu_flush_ex || !hv_hypercall_pg)
goto do_native;
deleted file mode 100644
@@ -1,34 +0,0 @@
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM hyperv
-
-#if !defined(_TRACE_HYPERV_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _TRACE_HYPERV_H
-
-#include <linux/tracepoint.h>
-
-#if IS_ENABLED(CONFIG_HYPERV)
-
-TRACE_EVENT(hyperv_mmu_flush_tlb_others,
- TP_PROTO(const struct cpumask *cpus, struct mm_struct *mm,
- unsigned long addr, unsigned long end),
- TP_ARGS(cpus, mm, addr, end),
- TP_STRUCT__entry(
- __field(unsigned int, ncpus)
- __field(struct mm_struct *, mm)
- __field(unsigned long, addr)
- __field(unsigned long, end)
- ),
- TP_fast_assign(__entry->ncpus = cpumask_weight(cpus);
- __entry->mm = mm;
- __entry->addr = addr,
- __entry->end = end),
- TP_printk("ncpus %d mm %p addr %lx, end %lx",
- __entry->ncpus, __entry->mm, __entry->addr, __entry->end)
- );
-
-#endif /* CONFIG_HYPERV */
-
-#endif /* _TRACE_HYPERV_H */
-
-/* This part must be outside protection */
-#include <trace/define_trace.h>
BugLink: http://bugs.launchpad.net/bugs/1719045 This reverts commit 47755dae5ca9da9351bc93b4260f65cc86eaf26f. Some golang applications are getting random failures with the linux-azure kernel. The failures range from some unexpected SIGBUS or SIGSEGV errors to internal memory allocation failures in the golang runtime. Bisecting linux-azure shows the problem is caused by the changes that added support for remote TLB flush via Hyper-V hypercalls. And removing this feature causes the problem to not happen anymore. Revert those changes until a proper fix is available. Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com> --- MAINTAINERS | 1 - arch/x86/hyperv/mmu.c | 8 -------- arch/x86/include/asm/trace/hyperv.h | 34 ---------------------------------- 3 files changed, 43 deletions(-) delete mode 100644 arch/x86/include/asm/trace/hyperv.h