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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2024-03-01 22:45:19 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-03-02 22:06:21 +0100 |
| commit | 63bd93ac6148ccfe0fe7268907c3517d42ec4fee (patch) | |
| tree | c6235b280ec11704a0d130e669d8e192fc564553 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | serial: msm: Use uart_prepare_sysrq_char(). (diff) | |
| download | wireguard-linux-63bd93ac6148ccfe0fe7268907c3517d42ec4fee.tar.xz wireguard-linux-63bd93ac6148ccfe0fe7268907c3517d42ec4fee.zip | |
serial: omap: Use uart_prepare_sysrq_char().
The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT.
The driver splits the locking function into two parts: local_irq_save() and
uart_port_lock() and this breaks PREEMPT_RT.
Delay handling sysrq until port lock is dropped.
Remove the special case in the console write routine an always use the
complete locking function.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20240301215246.891055-7-bigeasy@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions