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ftrace: Decouple hash items from showing filtered functions 

The set_ftrace_filter shows "hashed" functions, which are functions
that are added with operations to them (like traceon and traceoff).

As other subsystems may be able to show what functions they are
using for function tracing, the hash items should no longer
be shown just because the FILTER flag is set. As they have nothing
to do with other subsystems filters.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2011-12-19 15:21:16 -05:00 committed by Steven Rostedt
parent fc13cb0ce4
commit 69a3083c4a
2 changed files with 11 additions and 10 deletions
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5
include/linux/ftrace.h
View File

@ -206,8 +206,9 @@ enum {
FTRACE_ITER_FILTER = (1 << 0),
FTRACE_ITER_NOTRACE = (1 << 1),
FTRACE_ITER_PRINTALL = (1 << 2),
FTRACE_ITER_HASH = (1 << 3),
FTRACE_ITER_ENABLED = (1 << 4),
FTRACE_ITER_DO_HASH = (1 << 3),
FTRACE_ITER_HASH = (1 << 4),
FTRACE_ITER_ENABLED = (1 << 5),
};
void arch_ftrace_update_code(int command);

16
kernel/trace/ftrace.c
View File

@ -2198,6 +2198,9 @@ static void *t_hash_start(struct seq_file *m, loff_t *pos)
void *p = NULL;
loff_t l;
if (!(iter->flags & FTRACE_ITER_DO_HASH))
return NULL;
if (iter->func_pos > *pos)
return NULL;
@ -2343,12 +2346,8 @@ static void *t_start(struct seq_file *m, loff_t *pos)
break;
}
if (!p) {
if (iter->flags & FTRACE_ITER_FILTER)
return t_hash_start(m, pos);
return NULL;
}
if (!p)
return t_hash_start(m, pos);
return iter;
}
@ -2541,8 +2540,9 @@ ftrace_regex_open(struct ftrace_ops *ops, int flag,
static int
ftrace_filter_open(struct inode *inode, struct file *file)
{
return ftrace_regex_open(&global_ops, FTRACE_ITER_FILTER,
inode, file);
return ftrace_regex_open(&global_ops,
FTRACE_ITER_FILTER | FTRACE_ITER_DO_HASH,
inode, file);
}
static int