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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM_VAR
#ifdef CONFIG_PERF_EVENTS
#include "stages/stage6_event_callback.h"
#undef __perf_count#define __perf_count(c) (__count = (c))
#undef __perf_task#define __perf_task(t) (__task = (t))
#undef __DECLARE_EVENT_CLASS#define __DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \static notrace void \do_perf_trace_##call(void *__data, proto) \{ \ struct trace_event_call *event_call = __data; \ struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ struct trace_event_raw_##call *entry; \ struct pt_regs *__regs; \ u64 __count = 1; \ struct task_struct *__task = NULL; \ struct hlist_head *head; \ int __entry_size; \ int __data_size; \ int rctx; \ \ __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ \ head = this_cpu_ptr(event_call->perf_events); \ if (!bpf_prog_array_valid(event_call) && \ __builtin_constant_p(!__task) && !__task && \ hlist_empty(head)) \ return; \ \ __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ sizeof(u64)); \ __entry_size -= sizeof(u32); \ \ entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx); \ if (!entry) \ return; \ \ perf_fetch_caller_regs(__regs); \ \ tstruct \ \ { assign; } \ \ perf_trace_run_bpf_submit(entry, __entry_size, rctx, \ event_call, __count, __regs, \ head, __task); \}
/* * Define unused __count and __task variables to use @args to pass * arguments to do_perf_trace_##call. This is needed because the * macros __perf_count and __perf_task introduce the side-effect to * store copies into those local variables. */#undef DECLARE_EVENT_CLASS#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \ PARAMS(assign), PARAMS(print)) \static notrace void \perf_trace_##call(void *__data, proto) \{ \ u64 __count __attribute__((unused)); \ struct task_struct *__task __attribute__((unused)); \ \ guard(preempt_notrace)(); \ do_perf_trace_##call(__data, args); \}
#undef DECLARE_EVENT_SYSCALL_CLASS#define DECLARE_EVENT_SYSCALL_CLASS(call, proto, args, tstruct, assign, print) \__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \ PARAMS(assign), PARAMS(print)) \static notrace void \perf_trace_##call(void *__data, proto) \{ \ u64 __count __attribute__((unused)); \ struct task_struct *__task __attribute__((unused)); \ \ might_fault(); \ guard(preempt_notrace)(); \ do_perf_trace_##call(__data, args); \}
/* * This part is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the * perf probe will fail to compile unless it too is updated. */#undef DEFINE_EVENT#define DEFINE_EVENT(template, call, proto, args) \static inline void perf_test_probe_##call(void) \{ \ check_trace_callback_type_##call(perf_trace_##template); \}
#undef DEFINE_EVENT_PRINT#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#undef __DECLARE_EVENT_CLASS
#endif /* CONFIG_PERF_EVENTS */