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From: Tejun Heo <tj@kernel.org>
To: void@manifault.com, arighi@nvidia.com, multics69@gmail.com
Cc: linux-kernel@vger.kernel.org, sched-ext@meta.com,
	Tejun Heo <tj@kernel.org>
Subject: [PATCH 1/3] tool/sched_ext: Event counter dumping updates
Date: Fri,  7 Feb 2025 22:42:15 -1000	[thread overview]
Message-ID: <20250208084229.1274399-2-tj@kernel.org> (raw)
In-Reply-To: <20250208084229.1274399-1-tj@kernel.org>

- There's no need to dump event counters from both scx_qmap and scx_central.
  Drop counter dumping from scx_central.

- bpf_printk() implies a trailing new line and the explicit new line leads
  to double new lines. Drop the explicit new lines.

Signed-off-by: Tejun Heo <tj@kernel.org>
---
 tools/sched_ext/scx_central.bpf.c | 21 ---------------------
 tools/sched_ext/scx_qmap.bpf.c    | 16 ++++++++--------
 2 files changed, 8 insertions(+), 29 deletions(-)

diff --git a/tools/sched_ext/scx_central.bpf.c b/tools/sched_ext/scx_central.bpf.c
index 907a844723c1..5c165af1fa27 100644
--- a/tools/sched_ext/scx_central.bpf.c
+++ b/tools/sched_ext/scx_central.bpf.c
@@ -293,27 +293,6 @@ static int central_timerfn(void *map, int *key, struct bpf_timer *timer)
 	bpf_timer_start(timer, TIMER_INTERVAL_NS, BPF_F_TIMER_CPU_PIN);
 	__sync_fetch_and_add(&nr_timers, 1);
 
-	/* print event counters every second */
-	if (nr_timers % 1000 == 0) {
-		scx_bpf_events(&events, sizeof(events));
-
-		bpf_printk("%35s: %llu\n", "SCX_EV_SELECT_CPU_FALLBACK",
-			   scx_read_event(&events, SCX_EV_SELECT_CPU_FALLBACK));
-		bpf_printk("%35s: %llu\n", "SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE",
-			   scx_read_event(&events, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE));
-		bpf_printk("%35s: %llu\n", "SCX_EV_DISPATCH_KEEP_LAST",
-			   scx_read_event(&events, SCX_EV_DISPATCH_KEEP_LAST));
-		bpf_printk("%35s: %llu\n", "SCX_EV_ENQ_SKIP_EXITING",
-			   scx_read_event(&events, SCX_EV_ENQ_SKIP_EXITING));
-		bpf_printk("%35s: %llu\n", "SCX_EV_ENQ_SLICE_DFL",
-			   scx_read_event(&events, SCX_EV_ENQ_SLICE_DFL));
-		bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_DURATION",
-			   scx_read_event(&events, SCX_EV_BYPASS_DURATION));
-		bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_DISPATCH",
-			   scx_read_event(&events, SCX_EV_BYPASS_DISPATCH));
-		bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_ACTIVATE",
-			   scx_read_event(&events, SCX_EV_BYPASS_ACTIVATE));
-	}
 	return 0;
 }
 
diff --git a/tools/sched_ext/scx_qmap.bpf.c b/tools/sched_ext/scx_qmap.bpf.c
index 7d9d1e5d2358..e0e766d402e1 100644
--- a/tools/sched_ext/scx_qmap.bpf.c
+++ b/tools/sched_ext/scx_qmap.bpf.c
@@ -776,21 +776,21 @@ static int monitor_timerfn(void *map, int *key, struct bpf_timer *timer)
 
 	scx_bpf_events(&events, sizeof(events));
 
-	bpf_printk("%35s: %llu\n", "SCX_EV_SELECT_CPU_FALLBACK",
+	bpf_printk("%35s: %llu", "SCX_EV_SELECT_CPU_FALLBACK",
 		   scx_read_event(&events, SCX_EV_SELECT_CPU_FALLBACK));
-	bpf_printk("%35s: %llu\n", "SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE",
+	bpf_printk("%35s: %llu", "SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE",
 		   scx_read_event(&events, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE));
-	bpf_printk("%35s: %llu\n", "SCX_EV_DISPATCH_KEEP_LAST",
+	bpf_printk("%35s: %llu", "SCX_EV_DISPATCH_KEEP_LAST",
 		   scx_read_event(&events, SCX_EV_DISPATCH_KEEP_LAST));
-	bpf_printk("%35s: %llu\n", "SCX_EV_ENQ_SKIP_EXITING",
+	bpf_printk("%35s: %llu", "SCX_EV_ENQ_SKIP_EXITING",
 		   scx_read_event(&events, SCX_EV_ENQ_SKIP_EXITING));
-	bpf_printk("%35s: %llu\n", "SCX_EV_ENQ_SLICE_DFL",
+	bpf_printk("%35s: %llu", "SCX_EV_ENQ_SLICE_DFL",
 		   scx_read_event(&events, SCX_EV_ENQ_SLICE_DFL));
-	bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_DURATION",
+	bpf_printk("%35s: %llu", "SCX_EV_BYPASS_DURATION",
 		   scx_read_event(&events, SCX_EV_BYPASS_DURATION));
-	bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_DISPATCH",
+	bpf_printk("%35s: %llu", "SCX_EV_BYPASS_DISPATCH",
 		   scx_read_event(&events, SCX_EV_BYPASS_DISPATCH));
-	bpf_printk("%35s: %llu\n", "SCX_EV_BYPASS_ACTIVATE",
+	bpf_printk("%35s: %llu", "SCX_EV_BYPASS_ACTIVATE",
 		   scx_read_event(&events, SCX_EV_BYPASS_ACTIVATE));
 
 	bpf_timer_start(timer, ONE_SEC_IN_NS, 0);
-- 
2.48.1


  reply	other threads:[~2025-02-08  8:42 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-08  8:42 [PATCHSET sched_ext/for-6.15] sched_ext: Event counter updates Tejun Heo
2025-02-08  8:42 ` Tejun Heo [this message]
2025-02-08  8:42 ` [PATCH 2/3] sched_ext: Count SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE in the right spot Tejun Heo
2025-02-08  8:42 ` [PATCH 3/3] sched_ext: Add SCX_EV_ENQ_SKIP_MIGRATION_DISABLED Tejun Heo
2025-02-08  9:12 ` [PATCHSET sched_ext/for-6.15] sched_ext: Event counter updates Changwoo Min
2025-02-09  6:40 ` Tejun Heo

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