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sh: ftrace: Fix up syscall tracing build.

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Syscall tracing metadata was shuffled around, update accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-12-11 15:25:41 +09:00
parent b5c00a3a41
commit d580cd96c8
1 changed files with 2 additions and 74 deletions
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76
arch/sh/kernel/ftrace.c
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@ -401,82 +401,10 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
#ifdef CONFIG_FTRACE_SYSCALLS
extern unsigned long __start_syscalls_metadata[];
extern unsigned long __stop_syscalls_metadata[];
extern unsigned long *sys_call_table;
static struct syscall_metadata **syscalls_metadata;
static struct syscall_metadata *find_syscall_meta(unsigned long *syscall)
unsigned long __init arch_syscall_addr(int nr)
{
struct syscall_metadata *start;
struct syscall_metadata *stop;
char str[KSYM_SYMBOL_LEN];
start = (struct syscall_metadata *)__start_syscalls_metadata;
stop = (struct syscall_metadata *)__stop_syscalls_metadata;
kallsyms_lookup((unsigned long) syscall, NULL, NULL, NULL, str);
for ( ; start < stop; start++) {
if (start->name && !strcmp(start->name, str))
return start;
}
return NULL;
return (unsigned long)sys_call_table[nr];
}
struct syscall_metadata *syscall_nr_to_meta(int nr)
{
if (!syscalls_metadata || nr >= FTRACE_SYSCALL_MAX || nr < 0)
return NULL;
return syscalls_metadata[nr];
}
int syscall_name_to_nr(char *name)
{
int i;
if (!syscalls_metadata)
return -1;
for (i = 0; i < NR_syscalls; i++)
if (syscalls_metadata[i])
if (!strcmp(syscalls_metadata[i]->name, name))
return i;
return -1;
}
void set_syscall_enter_id(int num, int id)
{
syscalls_metadata[num]->enter_id = id;
}
void set_syscall_exit_id(int num, int id)
{
syscalls_metadata[num]->exit_id = id;
}
static int __init arch_init_ftrace_syscalls(void)
{
int i;
struct syscall_metadata *meta;
unsigned long **psys_syscall_table = &sys_call_table;
syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) *
FTRACE_SYSCALL_MAX, GFP_KERNEL);
if (!syscalls_metadata) {
WARN_ON(1);
return -ENOMEM;
}
for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
meta = find_syscall_meta(psys_syscall_table[i]);
syscalls_metadata[i] = meta;
}
return 0;
}
arch_initcall(arch_init_ftrace_syscalls);
#endif /* CONFIG_FTRACE_SYSCALLS */