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| author | Frederic Weisbecker <frederic@kernel.org> | 2022-06-08 17:40:19 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-06-20 20:05:27 +0300 |
| commit | f67671baadf6dbae8eca46cb95e85b762e462b2b (patch) | |
| tree | fa701fbb194f99c41d7ef06682fe3d492efa1933 /include/linux/context_tracking.h | |
| parent | 5f8a62af527ad8a615d68889d816b72c3f5f227f (diff) | |
| download | linux-f67671baadf6dbae8eca46cb95e85b762e462b2b.tar.xz | |
context_tracking: Add a note about noinstr VS unsafe context tracking functions
Some context tracking functions enter or exit into/from RCU idle mode
while using trace-able and lockdep-aware IRQs (un-)masking. As a result
those functions can't get tagged as noinstr. This is unlikely to be
fixed since these are obsolete APIs. Drop a note about this matter.
[ paulmck: Apply Peter Zijlstra feedback. ]
Reported-by: Peter Zijlstra <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Uladzislau Rezki <uladzislau.rezki@sony.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Cc: Yu Liao <liaoyu15@huawei.com>
Cc: Phil Auld <pauld@redhat.com>
Cc: Paul Gortmaker<paul.gortmaker@windriver.com>
Cc: Alex Belits <abelits@marvell.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Tested-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Diffstat (limited to 'include/linux/context_tracking.h')
0 files changed, 0 insertions, 0 deletions