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9201a06027
Before we start disabling acquisition of the big process lock for specific syscalls, make sure to document and assert that all the lock is held during all syscalls.
25 lines
606 B
C++
25 lines
606 B
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/PerformanceEventBuffer.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$perf_event(int type, FlatPtr arg1, FlatPtr arg2)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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auto events_buffer = current_perf_events_buffer();
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if (!events_buffer) {
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if (!create_perf_events_buffer_if_needed())
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return ENOMEM;
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events_buffer = perf_events();
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}
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return events_buffer->append(type, arg1, arg2, nullptr);
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}
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}
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