tracing: Map syscall name to number
Add a new function to support translating a syscall name to number at runtime. This allows the syscall event tracer to map syscall names to number. Signed-off-by: Jason Baron <jbaron@redhat.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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@ -500,6 +500,22 @@ struct syscall_metadata *syscall_nr_to_meta(int nr)
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return syscalls_metadata[nr];
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}
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int syscall_name_to_nr(char *name)
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{
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int i;
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if (!syscalls_metadata)
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return -1;
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for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
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if (syscalls_metadata[i]) {
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if (!strcmp(syscalls_metadata[i]->name, name))
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return i;
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}
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}
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return -1;
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}
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void arch_init_ftrace_syscalls(void)
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{
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int i;
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