kernel/linux.git/include/linux/context_tracking_state.h, branch v6.19.11

rcu: Add a small-width RCU watching counter debug option

2025-10-28T16:32:56+00:00

A later commit will reduce the size of the RCU watching counter to free up some bits for another purpose. Paul suggested adding a config option to test the extreme case where the counter is reduced to its minimum usable width for rcutorture to poke at, so do that. Make it only configurable under RCU_EXPERT. While at it, add a comment to explain the layout of context_tracking->state. Link: http://lore.kernel.org/r/4c2cb573-168f-4806-b1d9-164e8276e66a@paulmck-laptop Suggested-by: Paul E. McKenney Signed-off-by: Valentin Schneider Reviewed-by: Paul E. McKenney Reviewed-by: Frederic Weisbecker Signed-off-by: Frederic Weisbecker

context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline

2024-08-15T16:00:43+00:00

Force context_tracking_enabled_this_cpu() to be inlined so that invoking it from guest_context_enter_irqoff(), which KVM uses in non-instrumentable code, doesn't unexpectedly leave a noinstr section. vmlinux.o: warning: objtool: vmx_vcpu_enter_exit+0x1c7: call to context_tracking_enabled_this_cpu() leaves .noinstr.text section vmlinux.o: warning: objtool: svm_vcpu_enter_exit+0x83: call to context_tracking_enabled_this_cpu() leaves .noinstr.text section Note, the CONFIG_CONTEXT_TRACKING_USER=n stub is already __always_inline. Signed-off-by: Sean Christopherson Signed-off-by: Paul E. McKenney Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename DYNTICK_IRQ_NONIDLE into CT_NESTING_IRQ_NONIDLE

2024-08-11T05:43:10+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, and the 'dynticks' prefix can be dropped without losing any meaning. Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename ct_dynticks_nmi_nesting_cpu() into ct_nmi_nesting_cpu()

2024-08-11T05:43:10+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, and the 'dynticks' prefix can be dropped without losing any meaning. Suggested-by: Frederic Weisbecker Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename ct_dynticks_nmi_nesting() into ct_nmi_nesting()

2024-08-11T05:41:51+00:00

context_tracking, rcu: Rename struct context_tracking .dynticks_nmi_nesting into .nmi_nesting

2024-08-11T05:41:10+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, and the 'dynticks' prefix can be dropped without losing any meaning. [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ] Suggested-by: Frederic Weisbecker Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename ct_dynticks_nesting_cpu() into ct_nesting_cpu()

2024-08-11T05:39:22+00:00

context_tracking, rcu: Rename ct_dynticks_nesting() into ct_nesting()

2024-08-11T05:39:12+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, reflect that change in the related helpers. Suggested-by: Frederic Weisbecker Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename struct context_tracking .dynticks_nesting into .nesting

2024-08-11T05:35:09+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, reflect that change in the related helpers. [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ] Suggested-by: Frederic Weisbecker Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

context_tracking, rcu: Rename ct_dynticks_cpu_acquire() into ct_rcu_watching_cpu_acquire()

2024-07-29T02:03:10+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, reflect that change in the related helpers. Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay