From cb5e3ca248435f19fce0254987ba894a25611974 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Wed, 15 Feb 2023 23:40:54 +0100 Subject: Document spl levels of locks taken during interrupts --- kern/processor.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'kern/processor.h') diff --git a/kern/processor.h b/kern/processor.h index abc2e866..17b784a3 100644 --- a/kern/processor.h +++ b/kern/processor.h @@ -56,7 +56,7 @@ struct processor_set { struct run_queue runq; /* runq for this set */ queue_head_t idle_queue; /* idle processors */ int idle_count; /* how many ? */ - decl_simple_lock_data(, idle_lock) /* lock for above */ + decl_simple_lock_data(, idle_lock) /* lock for above, shall be taken at splsched only */ queue_head_t processors; /* all processors here */ int processor_count; /* how many ? */ boolean_t empty; /* true if no processors */ @@ -221,6 +221,7 @@ extern processor_t processor_ptr[NCPUS]; #define pset_ref_lock(pset) simple_lock(&(pset)->ref_lock) #define pset_ref_unlock(pset) simple_unlock(&(pset)->ref_lock) +/* Shall be taken at splsched only */ #define processor_lock(pr) simple_lock(&(pr)->lock) #define processor_unlock(pr) simple_unlock(&(pr)->lock) -- cgit v1.2.3