diff options
author | Ingo Molnar <mingo@kernel.org> | 2012-12-08 18:54:35 +0400 |
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committer | Ingo Molnar <mingo@kernel.org> | 2012-12-08 18:54:35 +0400 |
commit | cc1b39dbf9f55a438e8a21a694394c20e6a17129 (patch) | |
tree | cf48e5c871250c2bfd1d0590acd2f0569e95b950 /include/trace | |
parent | 7e0dd574cd6b1bcc818ed4251e5ceda7d8bee08f (diff) | |
parent | 1c7d66732458dc187008e3f5b2f71e019e320fc2 (diff) | |
download | linux-cc1b39dbf9f55a438e8a21a694394c20e6a17129.tar.xz |
Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core
Pull ftrace updates from Steve Rostedt.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/trace')
-rw-r--r-- | include/trace/ftrace.h | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 698f2a890322..40dc5e8fe340 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -619,79 +619,6 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) -/* - * Define the insertion callback to perf events - * - * The job is very similar to ftrace_raw_event_<call> except that we don't - * insert in the ring buffer but in a perf counter. - * - * static void ftrace_perf_<call>(proto) - * { - * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; - * struct ftrace_event_call *event_call = &event_<call>; - * extern void perf_tp_event(int, u64, u64, void *, int); - * struct ftrace_raw_##call *entry; - * struct perf_trace_buf *trace_buf; - * u64 __addr = 0, __count = 1; - * unsigned long irq_flags; - * struct trace_entry *ent; - * int __entry_size; - * int __data_size; - * int __cpu - * int pc; - * - * pc = preempt_count(); - * - * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); - * - * // Below we want to get the aligned size by taking into account - * // the u32 field that will later store the buffer size - * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32), - * sizeof(u64)); - * __entry_size -= sizeof(u32); - * - * // Protect the non nmi buffer - * // This also protects the rcu read side - * local_irq_save(irq_flags); - * __cpu = smp_processor_id(); - * - * if (in_nmi()) - * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi); - * else - * trace_buf = rcu_dereference_sched(perf_trace_buf); - * - * if (!trace_buf) - * goto end; - * - * trace_buf = per_cpu_ptr(trace_buf, __cpu); - * - * // Avoid recursion from perf that could mess up the buffer - * if (trace_buf->recursion++) - * goto end_recursion; - * - * raw_data = trace_buf->buf; - * - * // Make recursion update visible before entering perf_tp_event - * // so that we protect from perf recursions. - * - * barrier(); - * - * //zero dead bytes from alignment to avoid stack leak to userspace: - * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; - * entry = (struct ftrace_raw_<call> *)raw_data; - * ent = &entry->ent; - * tracing_generic_entry_update(ent, irq_flags, pc); - * ent->type = event_call->id; - * - * <tstruct> <- do some jobs with dynamic arrays - * - * <assign> <- affect our values - * - * perf_tp_event(event_call->id, __addr, __count, entry, - * __entry_size); <- submit them to perf counter - * - * } - */ #ifdef CONFIG_PERF_EVENTS |