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From: Tejun Heo <tj@kernel.org>
To: David Vernet <void@manifault.com>,
	Andrea Righi <arighi@nvidia.com>,
	Changwoo Min <changwoo@igalia.com>
Cc: linux-kernel@vger.kernel.org, sched-ext@lists.linux.dev
Subject: [PATCH v2 4/7] sched_ext: Use bitfields for boolean warning flags
Date: Tue, 23 Sep 2025 06:58:06 -1000	[thread overview]
Message-ID: <aNLRnjsWRQt4WjRM@slm.duckdns.org> (raw)
In-Reply-To: <20250922013246.275031-4-tj@kernel.org>

Convert warned_zero_slice and warned_deprecated_rq in scx_sched struct to
single-bit bitfields. While this doesn't reduce struct size immediately,
it prepares for future bitfield additions.

v2: Update patch description.

Signed-off-by: Tejun Heo <tj@kernel.org>
---
 kernel/sched/ext_internal.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/kernel/sched/ext_internal.h
+++ b/kernel/sched/ext_internal.h
@@ -871,8 +871,8 @@ struct scx_sched {
 	struct scx_dispatch_q	**global_dsqs;
 	struct scx_sched_pcpu __percpu *pcpu;
 
-	bool			warned_zero_slice;
-	bool			warned_deprecated_rq;
+	bool			warned_zero_slice:1;
+	bool			warned_deprecated_rq:1;
 
 	atomic_t		exit_kind;
 	struct scx_exit_info	*exit_info;

  parent reply	other threads:[~2025-09-23 16:58 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-22  1:32 [PATCH 1/7] sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast() Tejun Heo
2025-09-22  1:32 ` [PATCH 2/7] sched_ext: Improve SCX_KF_DISPATCH comment Tejun Heo
2025-09-23  7:20   ` Andrea Righi
2025-09-22  1:32 ` [PATCH 3/7] sched_ext: Fix stray scx_root usage in task_can_run_on_remote_rq() Tejun Heo
2025-09-23  7:22   ` Andrea Righi
2025-09-22  1:32 ` [PATCH 4/7] sched_ext: Use bitfields for boolean warning flags Tejun Heo
2025-09-23  7:45   ` Andrea Righi
2025-09-23 16:00     ` Tejun Heo
2025-09-23 16:58   ` Tejun Heo [this message]
2025-09-23 18:45     ` [PATCH v2 " Andrea Righi
2025-09-22  1:32 ` [PATCH 5/7] sched_ext: Add SCX_EFLAG_INITIALIZED to indicate successful ops.init() Tejun Heo
2025-09-23  8:08   ` Andrea Righi
2025-09-22  1:32 ` [PATCH 6/7] sched_ext: Make qmap dump operation non-destructive Tejun Heo
2025-09-23  8:09   ` Andrea Righi
2025-09-22  1:32 ` [PATCH 7/7] tools/sched_ext: scx_qmap: Make debug output quieter by default Tejun Heo
2025-09-23  8:11   ` Andrea Righi
2025-09-23  7:18 ` [PATCH 1/7] sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast() Andrea Righi
2025-09-23 15:59   ` Tejun Heo
2025-09-23 18:47     ` Andrea Righi
2025-09-23 19:13 ` Tejun Heo
2025-09-24  6:14 ` Andrea Righi
2025-09-24  6:38   ` Tejun Heo
2025-09-24  8:26     ` Andrea Righi
2025-09-24 18:00       ` Tejun Heo
2025-10-22 21:37 ` Andrea Righi
2025-10-22 21:56 ` Tejun Heo

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