core.c (7b47c66cfa203288c43851260edeeb0fae56f692) core.c (c895f6f703ad7dd2f99e751d9884b0aa5d0eea25)
1/*
2 * Performance events core code:
3 *
4 * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
5 * Copyright (C) 2008-2011 Red Hat, Inc., Ingo Molnar
6 * Copyright (C) 2008-2011 Red Hat, Inc., Peter Zijlstra
7 * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
8 *

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7982
7983#ifdef CONFIG_BPF_SYSCALL
7984static void bpf_overflow_handler(struct perf_event *event,
7985 struct perf_sample_data *data,
7986 struct pt_regs *regs)
7987{
7988 struct bpf_perf_event_data_kern ctx = {
7989 .data = data,
1/*
2 * Performance events core code:
3 *
4 * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
5 * Copyright (C) 2008-2011 Red Hat, Inc., Ingo Molnar
6 * Copyright (C) 2008-2011 Red Hat, Inc., Peter Zijlstra
7 * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
8 *

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7982
7983#ifdef CONFIG_BPF_SYSCALL
7984static void bpf_overflow_handler(struct perf_event *event,
7985 struct perf_sample_data *data,
7986 struct pt_regs *regs)
7987{
7988 struct bpf_perf_event_data_kern ctx = {
7989 .data = data,
7990 .regs = regs,
7991 .event = event,
7992 };
7993 int ret = 0;
7994
7990 .event = event,
7991 };
7992 int ret = 0;
7993
7994 ctx.regs = perf_arch_bpf_user_pt_regs(regs);
7995 preempt_disable();
7996 if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1))
7997 goto out;
7998 rcu_read_lock();
7999 ret = BPF_PROG_RUN(event->prog, &ctx);
8000 rcu_read_unlock();
8001out:
8002 __this_cpu_dec(bpf_prog_active);

--- 3220 unchanged lines hidden --- 		7995 preempt_disable();
7996 if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1))
7997 goto out;
7998 rcu_read_lock();
7999 ret = BPF_PROG_RUN(event->prog, &ctx);
8000 rcu_read_unlock();
8001out:
8002 __this_cpu_dec(bpf_prog_active);

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