hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Masami Hiramatsu fixed another bug. This time returning a proper 

result in event_enable_func(). After checking the return status
 of try_module_get(), it returned the status of try_module_get(). But
 try_module_get() returns 0 on failure, which is success for
 event_enable_func().
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQEcBAABAgAGBQJRnQn/AAoJEOdOSU1xswtMVDUH/3rOPX2/sbc817NN+KjXJiQi
 1O8tmiOcaqMh742Df2YWSqXeM5IjARjl/xSZqazpGaDVu6HnMbEeb3Frx9hpzOPu
 VEtBapasrPK6TOYSDfLaUuRsxuzSEsXR4dUexSh3o7f0/b1dY8x0BwiYxz3tz5BS
 x6HX9OptUXUKDrloNC0qlX7ymuWmaeGULsTgCYYORfMe2FRFfvJhoCZFgC6dLw5x
 YTubQuhVyNOD/X5jXM5h9kkUSw70VjGMhlqilyp0YLcnrhFL/QhCi7WR3b3hDwcp
 MUpJyMAaPXlQHs2Q/gh46XldyhULPXamrujx8ISsDDdMQlWsWPTsQgfJ8e4/zsQ=
 =n9S7
 -----END PGP SIGNATURE-----

Merge tag 'trace-fixes-v3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Masami Hiramatsu fixed another bug.  This time returning a proper
  result in event_enable_func().  After checking the return status of
  try_module_get(), it returned the status of try_module_get().

  But try_module_get() returns 0 on failure, which is success for
  event_enable_func()"

* tag 'trace-fixes-v3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Return -EBUSY when event_enable_func() fails to get module
This commit is contained in:
Linus Torvalds 2013-05-24 10:46:55 -07:00
parent a8432588fc 6ed0106667
commit 17fdfd0851
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/trace/trace_events.c
View File

@ -2072,8 +2072,10 @@ event_enable_func(struct ftrace_hash *hash,
out_reg:
/* Don't let event modules unload while probe registered */
ret = try_module_get(file->event_call->mod);
if (!ret)
if (!ret) {
ret = -EBUSY;
goto out_free;
}
ret = __ftrace_event_enable_disable(file, 1, 1);
if (ret < 0)