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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-05-24 10:15:37 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-05-26 10:10:45 +0200 |
| commit | c23a465625e287c4deba0fdf5e8adc59cfd2a0b7 (patch) | |
| tree | 11235b5ba8e8e602f37676e4f9ea3187118293a6 /arch/arm/probes | |
| parent | 2d1e38f56622b9bb5af85be63c1052c056f5c677 (diff) | |
| download | lwn-c23a465625e287c4deba0fdf5e8adc59cfd2a0b7.tar.gz lwn-c23a465625e287c4deba0fdf5e8adc59cfd2a0b7.zip | |
arm64: Prevent cpu hotplug rwsem recursion
The text patching functions which are invoked from jump_label and kprobes
code are protected against cpu hotplug at the call sites.
Use stop_machine_cpuslocked() to avoid recursion on the cpu hotplug
rwsem. stop_machine_cpuslocked() contains a lockdep assertion to catch any
unprotected callers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20170524081549.197070135@linutronix.de
Diffstat (limited to 'arch/arm/probes')
0 files changed, 0 insertions, 0 deletions