Merge branches 'doc.2020.02.27a', 'fixes.2020.03.21a',... (aa93ec62) · Commits · 戴 / test

Documentation/admin-guide/kernel-parameters.txt

+19 −0

Original line number	Diff line number	Diff line
		@@ -3980,6 +3980,15 @@
		Set threshold of queued RCU callbacks below which
		batch limiting is re-enabled.

		rcutree.qovld= [KNL]
		Set threshold of queued RCU callbacks beyond which
		RCU's force-quiescent-state scan will aggressively
		enlist help from cond_resched() and sched IPIs to
		help CPUs more quickly reach quiescent states.
		Set to less than zero to make this be set based
		on rcutree.qhimark at boot time and to zero to
		disable more aggressive help enlistment.

		rcutree.rcu_idle_gp_delay= [KNL]
		Set wakeup interval for idle CPUs that have
		RCU callbacks (RCU_FAST_NO_HZ=y).
		@@ -4195,6 +4204,12 @@
		rcupdate.rcu_cpu_stall_suppress= [KNL]
		Suppress RCU CPU stall warning messages.

		rcupdate.rcu_cpu_stall_suppress_at_boot= [KNL]
		Suppress RCU CPU stall warning messages and
		rcutorture writer stall warnings that occur
		during early boot, that is, during the time
		before the init task is spawned.

		rcupdate.rcu_cpu_stall_timeout= [KNL]
		Set timeout for RCU CPU stall warning messages.

		@@ -4867,6 +4882,10 @@
		topology updates sent by the hypervisor to this
		LPAR.

		torture.disable_onoff_at_boot= [KNL]
		Prevent the CPU-hotplug component of torturing
		until after init has spawned.

		tp720= [HW,PS2]

		tpm_suspend_pcr=[HW,TPM]

+1 −1

Original line number	Diff line number	Diff line
		@@ -2383,7 +2383,7 @@ static int nfs_access_get_cached_rcu(struct inode inode, const struct cred cre
		rcu_read_lock();
		if (nfsi->cache_validity & NFS_INO_INVALID_ACCESS)
		goto out;
		lh = rcu_dereference(nfsi->access_cache_entry_lru.prev);
		lh = rcu_dereference(list_tail_rcu(&nfsi->access_cache_entry_lru));
		cache = list_entry(lh, struct nfs_access_entry, lru);
		if (lh == &nfsi->access_cache_entry_lru \|\|
		cred_fscmp(cred, cache->cred) != 0)

+2 −2

Original line number	Diff line number	Diff line
		@@ -60,7 +60,7 @@ static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
		#define __list_check_rcu(dummy, cond, extra...) \
		({ \
		check_arg_count_one(extra); \
		RCU_LOCKDEP_WARN(!cond && !rcu_read_lock_any_held(), \
		RCU_LOCKDEP_WARN(!(cond) && !rcu_read_lock_any_held(), \
		"RCU-list traversed in non-reader section!"); \
		})
		#else

+1 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,7 @@ void rcu_scheduler_starting(void);
		static inline void rcu_scheduler_starting(void) { }
		#endif /* #else #ifndef CONFIG_SRCU */
		static inline void rcu_end_inkernel_boot(void) { }
		static inline bool rcu_inkernel_boot_has_ended(void) { return true; }
		static inline bool rcu_is_watching(void) { return true; }
		static inline void rcu_momentary_dyntick_idle(void) { }
		static inline void kfree_rcu_scheduler_running(void) { }

+1 −0

Original line number	Diff line number	Diff line
		@@ -54,6 +54,7 @@ void exit_rcu(void);
		void rcu_scheduler_starting(void);
		extern int rcu_scheduler_active __read_mostly;
		void rcu_end_inkernel_boot(void);
		bool rcu_inkernel_boot_has_ended(void);
		bool rcu_is_watching(void);
		#ifndef CONFIG_PREEMPTION
		void rcu_all_qs(void);