Re: [RFC PATCH 11/14] context-tracking: Introduce work deferral infrastructure
From: Frederic Weisbecker <frederic@kernel.org>
Date: 2023-07-06 10:02:02
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On Thu, Jul 06, 2023 at 12:23:57AM +0200, Frederic Weisbecker wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h index fdd537ea513f..ec3d172601c5 100644 --- a/include/linux/context_tracking_state.h +++ b/include/linux/context_tracking_state.h@@ -10,14 +10,19 @@ #define DYNTICK_IRQ_NONIDLE ((LONG_MAX / 2) + 1) enum ctx_state { + /* Following are values */ CONTEXT_DISABLED = -1, /* returned by ct_state() if unknown */ CONTEXT_KERNEL = 0, CONTEXT_IDLE = 1, CONTEXT_USER = 2, - CONTEXT_GUEST = 3, - CONTEXT_MAX = 4, + /* Following are bit numbers */ + CONTEXT_WORK = 2, + CONTEXT_MAX = 16, }; +#define CONTEXT_MASK (BIT(CONTEXT_WORK) - 1) +#define CONTEXT_WORK_MASK ((BIT(CONTEXT_MAX) - 1) & ~(BIT(CONTEXT_WORK) - 1)) + /* Even value for idle, else odd. */ #define RCU_DYNTICKS_IDX CONTEXT_MAX
And that should be: #define RCU_DYNTICKS_IDX BIT(CONTEXT_MAX) Did I mention it's not even build tested? :o)