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| author |   Oleg Nesterov <oleg@redhat.com> | 2009-02-03 20:39:04 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-02-03 22:50:58 +0100 |
| commit | 229c4ef8ae56d69f8dec64533bf1c7f8070c1a4a (patch) | |
| tree | e13a9ef3602f945ae51b73b592c8ae4d29e67ca3 /kernel/trace/trace_branch.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 (diff) | |
| download | wireguard-linux-229c4ef8ae56d69f8dec64533bf1c7f8070c1a4a.tar.xz wireguard-linux-229c4ef8ae56d69f8dec64533bf1c7f8070c1a4a.zip | |
ftrace: do_each_pid_task() needs rcu lock
"ftrace: use struct pid" commit 978f3a45d9499c7a447ca7615455cefb63d44165
converted ftrace_pid_trace to "struct pid*".
But we can't use do_each_pid_task() without rcu_read_lock() even if
we know the pid itself can't go away (it was pinned in ftrace_pid_write).
The exiting task can detach itself from this pid at any moment.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_branch.c')
0 files changed, 0 insertions, 0 deletions