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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-07-24 10:38:12 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-07-24 13:58:14 -0400 |
| commit | e3eea1404f5ff7a2ceb7b5e7ba412a6fd94f2935 (patch) | |
| tree | 2c2cd04a98518380122739dae0eccf86ea979760 /include/linux/ftrace.h | |
| parent | d6726c8145290bef950ae2538ea6ae1d96a1944b (diff) | |
| download | lwn-e3eea1404f5ff7a2ceb7b5e7ba412a6fd94f2935.tar.gz lwn-e3eea1404f5ff7a2ceb7b5e7ba412a6fd94f2935.zip | |
ftrace: Fix breakage of set_ftrace_pid
Commit 4104d326b670 ("ftrace: Remove global function list and call function
directly") simplified the ftrace code by removing the global_ops list with a
new design. But this cleanup also broke the filtering of PIDs that are added
to the set_ftrace_pid file.
Add back the proper hooks to have pid filtering working once again.
Cc: stable@vger.kernel.org # 3.16+
Reported-by: Matt Fleming <matt@console-pimps.org>
Reported-by: Richard Weinberger <richard.weinberger@gmail.com>
Tested-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 1da602982cf9..6cd8c0ee4b6f 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -116,6 +116,7 @@ ftrace_func_t ftrace_ops_get_func(struct ftrace_ops *ops); * SAVE_REGS. If another ops with this flag set is already registered * for any of the functions that this ops will be registered for, then * this ops will fail to register or set_filter_ip. + * PID - Is affected by set_ftrace_pid (allows filtering on those pids) */ enum { FTRACE_OPS_FL_ENABLED = 1 << 0, @@ -132,6 +133,7 @@ enum { FTRACE_OPS_FL_MODIFYING = 1 << 11, FTRACE_OPS_FL_ALLOC_TRAMP = 1 << 12, FTRACE_OPS_FL_IPMODIFY = 1 << 13, + FTRACE_OPS_FL_PID = 1 << 14, }; #ifdef CONFIG_DYNAMIC_FTRACE @@ -159,6 +161,7 @@ struct ftrace_ops { struct ftrace_ops *next; unsigned long flags; void *private; + ftrace_func_t saved_func; int __percpu *disabled; #ifdef CONFIG_DYNAMIC_FTRACE int nr_trampolines; |