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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-12-04 20:33:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-13 14:10:04 +0300 |
| commit | d3361f0733627f5a9162ab20bea0a71214f04448 (patch) | |
| tree | bf471bdbab0a30f8feccea1a9c25fee6cd48da18 /block/ioprio.c | |
| parent | 927d1f4f77e4784ab3944a9df86ab14d1cd3185a (diff) | |
| download | linux-d3361f0733627f5a9162ab20bea0a71214f04448.tar.xz | |
rcu-tasks: Repair RCU Tasks Trace quiescence check
[ Upstream commit 2eb52fa8900e642b3b5054c4bf9776089d2a935f ]
The context-switch-time check for RCU Tasks Trace quiescence expects
current->trc_reader_special.b.need_qs to be zero, and if so, updates
it to TRC_NEED_QS_CHECKED. This is backwards, because if this value
is zero, there is no RCU Tasks Trace grace period in flight, an thus
no need for a quiescent state. Instead, when a grace period starts,
this field is set to TRC_NEED_QS.
This commit therefore changes the check from zero to TRC_NEED_QS.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'block/ioprio.c')
0 files changed, 0 insertions, 0 deletions