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sh: ftrace: Fix up syscall tracing build.
Syscall tracing metadata was shuffled around, update accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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commit
d580cd96c8
1 changed files with 2 additions and 74 deletions
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@ -401,82 +401,10 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
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#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
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#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
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#ifdef CONFIG_FTRACE_SYSCALLS
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#ifdef CONFIG_FTRACE_SYSCALLS
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extern unsigned long __start_syscalls_metadata[];
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extern unsigned long __stop_syscalls_metadata[];
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extern unsigned long *sys_call_table;
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extern unsigned long *sys_call_table;
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static struct syscall_metadata **syscalls_metadata;
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unsigned long __init arch_syscall_addr(int nr)
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static struct syscall_metadata *find_syscall_meta(unsigned long *syscall)
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{
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{
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struct syscall_metadata *start;
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return (unsigned long)sys_call_table[nr];
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struct syscall_metadata *stop;
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char str[KSYM_SYMBOL_LEN];
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start = (struct syscall_metadata *)__start_syscalls_metadata;
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stop = (struct syscall_metadata *)__stop_syscalls_metadata;
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kallsyms_lookup((unsigned long) syscall, NULL, NULL, NULL, str);
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for ( ; start < stop; start++) {
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if (start->name && !strcmp(start->name, str))
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return start;
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}
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return NULL;
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}
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}
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struct syscall_metadata *syscall_nr_to_meta(int nr)
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{
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if (!syscalls_metadata || nr >= FTRACE_SYSCALL_MAX || nr < 0)
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return NULL;
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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 < NR_syscalls; 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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return -1;
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}
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void set_syscall_enter_id(int num, int id)
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{
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syscalls_metadata[num]->enter_id = id;
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}
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void set_syscall_exit_id(int num, int id)
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{
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syscalls_metadata[num]->exit_id = id;
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}
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static int __init arch_init_ftrace_syscalls(void)
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{
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int i;
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struct syscall_metadata *meta;
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unsigned long **psys_syscall_table = &sys_call_table;
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syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) *
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FTRACE_SYSCALL_MAX, GFP_KERNEL);
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if (!syscalls_metadata) {
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WARN_ON(1);
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return -ENOMEM;
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}
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for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
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meta = find_syscall_meta(psys_syscall_table[i]);
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syscalls_metadata[i] = meta;
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}
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return 0;
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}
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arch_initcall(arch_init_ftrace_syscalls);
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#endif /* CONFIG_FTRACE_SYSCALLS */
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#endif /* CONFIG_FTRACE_SYSCALLS */
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