| commit | 5aa1ba6a6c710e747838a22d798ac97a8b248745 | |
| author | Steven Rostedt <srostedt@redhat.com> | |
| Tue, 11 Nov 2008 04:07:30 +0000 (10 23:07 -0500) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Tue, 11 Nov 2008 08:40:29 +0000 (11 09:40 +0100) | ||
| tree | 29a0e0bfdad1a5674667dda1236099952dbf41cb | treesnapshot (tar.gz zip) |
| parent | e0cb4ebcd9e5b4ddd8216c20f54445c91b1fa4b9 | commitdiff |
ftrace: prevent ftrace_special from recursion
Impact: stop ftrace_special from recursion
The ftrace_special is used to help debug areas of the kernel.
Because of this, if it is put in certain locations, the fact that
it allows recursion can become a problem if the kernel developer
using does not realize that.
This patch changes ftrace_special to not allow recursion into itself
to make it more robust.
It also changes from preempt disable interrupts disable to prevent
any loss of trace entries.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Impact: stop ftrace_special from recursion
The ftrace_special is used to help debug areas of the kernel.
Because of this, if it is put in certain locations, the fact that
it allows recursion can become a problem if the kernel developer
using does not realize that.
This patch changes ftrace_special to not allow recursion into itself
to make it more robust.
It also changes from preempt disable interrupts disable to prevent
any loss of trace entries.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/trace/trace.c | diffblobblamehistory |