rcu/tree: Mark the idle relevant functions noinstr

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These functions are invoked from context tracking and other places in the
low level entry code. Move them into the .noinstr.text section to exclude
them from instrumentation.

Mark the places which are safe to invoke traceable functions with
instrumentation_begin/end() so objtool won't complain.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lkml.kernel.org/r/20200505134100.575356107@linutronix.de

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This commit is contained in:

Thomas Gleixner 2020-03-13 17:32:17 +01:00

parent 0d00449c7a

commit ff5c4f5cad

3 changed files with 49 additions and 41 deletions

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83

kernel/rcu/tree.c

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4

kernel/rcu/tree_plugin.h

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3

kernel/rcu/update.c

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