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perf: Drop guest callback (un)register stubs

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Drop perf's stubs for (un)registering guest callbacks now that KVM
registration of callbacks is hidden behind GUEST_PERF_EVENTS=y.  The only
other user is x86 XEN_PV, and x86 unconditionally selects PERF_EVENTS.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lore.kernel.org/r/20211111020738.2512932-18-seanjc@google.com
This commit is contained in:
Sean Christopherson 2021-11-11 02:07:38 +00:00 committed by Peter Zijlstra
parent 17ed14eba2
commit a9f4a6e92b
1 changed files with 0 additions and 5 deletions
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include/linux/perf_event.h
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@ -1511,11 +1511,6 @@ perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { }
static inline void
perf_bp_event(struct perf_event *event, void *data) { }
static inline void perf_register_guest_info_callbacks
(struct perf_guest_info_callbacks *cbs) { }
static inline void perf_unregister_guest_info_callbacks
(struct perf_guest_info_callbacks *cbs) { }
static inline void perf_event_mmap(struct vm_area_struct *vma) { }
typedef int (perf_ksymbol_get_name_f)(char *name, int name_len, void *data);