doc.2020.06.29a: Documentation updates. fixes.2020.06.29a: Miscellaneous fixes. kfree_rcu.2020.06.29a: kfree_rcu() updates. rcu-tasks.2020.06.29a: RCU Tasks updates. scale.2020.06.29a: Read-side scalability tests. srcu.2020.06.29a: SRCU updates. torture.2020.06.29a: Torture-test updates.
This commit removes the variable rnp from check_slow_task(), which is defined, assigned to, but not otherwise used. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit adds a count of the callbacks invoked to the per-CPU rcu_data structure. This count is printed by the show_rcu_gp_kthreads() that is invoked by rcutorture and the RCU CPU stall-warning code. It is also intended for use by drgn. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
- Add a SPDX header; - Adjust document and section titles; - Fix list markups; - Some whitespace fixes and new line breaks; - Mark literal blocks as such; - Add it to RCU/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Pull tty/serial driver updates from Greg KH: "Here is the tty and serial driver updates for 5.8-rc1 Nothing huge at all, just a lot of little serial driver fixes, updates for new devices and features, and other small things. Full details are in the shortlog. All of these have been in linux-next with no issues for a while" * tag 'tty-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (67 commits) tty: serial: qcom_geni_serial: Add 51.2MHz frequency support tty: serial: imx: clear Ageing Timer Interrupt in handler serial: 8250_fintek: Add F81966 Support sc16is7xx: Add flag to activate IrDA mode dt-bindings: sc16is7xx: Add flag to activate IrDA mode serial: 8250: Support rs485 bus termination GPIO serial: 8520_port: Fix function param documentation dt-bindings: serial: Add binding for rs485 bus termination GPIO vt: keyboard: avoid signed integer overflow in k_ascii serial: 8250: Enable 16550A variants by default on non-x86 tty: hvc_console, fix crashes on parallel open/close serial: imx: Initialize lock for non-registered console sc16is7xx: Read the LSR register for basic device presence check sc16is7xx: Allow sharing the IRQ line sc16is7xx: Use threaded IRQ sc16is7xx: Always use falling edge IRQ tty: n_gsm: Fix bogus i++ in gsm_data_kick tty: n_gsm: Remove unnecessary test in gsm_print_packet() serial: stm32: add no_console_suspend support tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP ...
With earlier commits, the API no longer discards the const-ness of the sysrq_key_op. As such we can add the notation. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: linux-kernel@vger.kernel.org Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: rcu@vger.kernel.org Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Link: https://lore.kernel.org/r/20200513214351.2138580-11-emil.l.velikov@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fixes.2020.04.27a: Miscellaneous fixes. kfree_rcu.2020.04.27a: Changes related to kfree_rcu(). rcu-tasks.2020.04.27a: Addition of new RCU-tasks flavors. stall.2020.04.27a: RCU CPU stall-warning updates. torture.2020.05.07a: Torture-test updates.
When all quiescent states have been seen, it is normally the grace-period kthread that is in trouble. Although the existing stack trace from the current CPU might possibly provide useful information, experience indicates that there is too much noise for this to be worthwhile. This commit therefore removes this stack trace from the output. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
If the grace-period kthread is starved, idle threads' extended quiescent states are not reported. These idle threads thus wrongly appear to be blocking the current grace period. This commit therefore tags such idle threads as probable false positives when the grace-period kthread is being starved. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit adds state for each RCU-tasks flavor to the rcutorture writer stall output. The initial state is minimal, but you have to start somewhere. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> [ paulmck: Fixes based on feedback from kbuild test robot. ]