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| author | Ingo Molnar <mingo@kernel.org> | 2015-03-27 12:04:06 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-27 12:04:06 +0300 |
| commit | 4bfe186dbe0a058680e4bfb0d673194f0ceaffd4 (patch) | |
| tree | 5e374857dcd979d50f51c7091505784cb053d078 /include/linux/cpu.h | |
| parent | 3c435c1e472ba344ee25f795f4807d4457e61f6c (diff) | |
| parent | 42528795ac1c8d7ba021797ec004904168956d64 (diff) | |
| download | linux-4bfe186dbe0a058680e4bfb0d673194f0ceaffd4.tar.xz | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Documentation updates.
- Changes permitting use of call_rcu() and friends very early in
boot, for example, before rcu_init() is invoked.
- Miscellaneous fixes.
- Add in-kernel API to enable and disable expediting of normal RCU
grace periods.
- Improve RCU's handling of (hotplug-) outgoing CPUs.
Note: ARM support is lagging a bit here, and these improved
diagnostics might generate (harmless) splats.
- NO_HZ_FULL_SYSIDLE fixes.
- Tiny RCU updates to make it more tiny.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 4260e8594bd7..d028721748d4 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -95,6 +95,10 @@ enum { * Called on the new cpu, just before * enabling interrupts. Must not sleep, * must not fail */ +#define CPU_DYING_IDLE 0x000B /* CPU (unsigned)v dying, reached + * idle loop. */ +#define CPU_BROKEN 0x000C /* CPU (unsigned)v did not die properly, + * perhaps due to preemption. */ /* Used for CPU hotplug events occurring while tasks are frozen due to a suspend * operation in progress @@ -271,4 +275,14 @@ void arch_cpu_idle_enter(void); void arch_cpu_idle_exit(void); void arch_cpu_idle_dead(void); +DECLARE_PER_CPU(bool, cpu_dead_idle); + +int cpu_report_state(int cpu); +int cpu_check_up_prepare(int cpu); +void cpu_set_state_online(int cpu); +#ifdef CONFIG_HOTPLUG_CPU +bool cpu_wait_death(unsigned int cpu, int seconds); +bool cpu_report_death(void); +#endif /* #ifdef CONFIG_HOTPLUG_CPU */ + #endif /* _LINUX_CPU_H_ */ |