From nobody Tue Feb 10 17:08:51 2026 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AFDC718BC1D for ; Sun, 26 Jan 2025 10:16:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.60.130.6 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737886619; cv=none; b=E38jQ99WwlZT7NFODfHC16IiWK5i/TH+vknGchSY+p/fPTZz1CaVIdvA4f+27+a5AwVMy9mAKolXFgqp8fRoGjqXrhfbyZMS8igRZabDyBHlxtaEc7WwdnOyjSZexufaBku415/+T0ChHhHpfvPueu6PI6XanBUCMGDj/nA8+84= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737886619; c=relaxed/simple; bh=9TaXQqvuSL7TEUQg/WSTgMs5+1Yji7gBh1T3lSwtOSo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OB42sDKH7NYrH6VTXl49F3vXGU5aXUOu9Ylv88Rjh4AtVYdPTRWuvPzBPI9PAPK7kOQn3RZSUx5H11oB6svDdWNHLA3jUHKpdj9TALelpLNq0XiFjaEqT9lJuVv6cpWadUcYeYnB4ATY0ECmXFrOEFg0fUwyxn230O38N4hf0/k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=AmNe5FJY; arc=none smtp.client-ip=178.60.130.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="AmNe5FJY" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=VhxrEoBVqhZs+PeQRjdWIdXVZhQu3ui3kpaiw/mKR7w=; b=AmNe5FJYDHJV+yCdUzE0j7lNGq ikmRlB4wXrledqovER9/Lk4Bb1hfPvPZD39n8lrkpHXs66xTqmo4i9owK7//NETo0rZI9t58Yb4W0 hBX8mWtx+neyIQKMc+9NkdDiZUFgiLn9pIWppGeWnavYaXGleKCSiCaRpgN+lA63NjuXWz3s74ycz Zr0OLGOLxFHBqYy18m6Z/QwQH3GRRqsk6XOW6KbqNONjR6i/2iVTo+MAY3zylOIXMWf6wrwbGRURi VzKZBT5cfxThLyCEts2NigesX03XtkDXvLP+qdZNyCV7Y8v3PdT7+/Hua1SYchS1AZz/Qb8dT3H+q 7GNVMXXg==; Received: from [58.29.143.236] (helo=localhost) by fanzine2.igalia.com with utf8esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1tbzhD-002ljo-70; Sun, 26 Jan 2025 11:16:51 +0100 From: Changwoo Min To: tj@kernel.org, void@manifault.com, arighi@nvidia.com Cc: kernel-dev@igalia.com, linux-kernel@vger.kernel.org, Changwoo Min Subject: [PATCH v2 08/11] sched_ext: Add an event, BYPASS_DISPATCH Date: Sun, 26 Jan 2025 19:16:11 +0900 Message-ID: <20250126101614.232388-9-changwoo@igalia.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250126101614.232388-1-changwoo@igalia.com> References: <20250126101614.232388-1-changwoo@igalia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a core event, BYPASS_DISPATCH, which represents how many tasks have been dispatched in the bypass mode. __scx_add_event() is used since the caller holds an rq lock, so the preemption has already been disabled. Signed-off-by: Changwoo Min --- kernel/sched/ext.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index bb363809e484..9a680774c1fc 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -1486,6 +1486,11 @@ struct scx_event_stats { */ u64 ENQ_SKIP_EXITING; =20 + /* + * The number of tasks dispatched in the bypassing mode. + */ + u64 BYPASS_DISPATCH; + /* * The number of times the bypassing mode has been activated. */ @@ -2941,6 +2946,8 @@ static int balance_one(struct rq *rq, struct task_str= uct *prev) return false; =20 has_tasks: + if (scx_rq_bypassing(rq)) + __scx_add_event(BYPASS_DISPATCH, 1); rq->scx.flags &=3D ~SCX_RQ_IN_BALANCE; return true; } @@ -5524,6 +5531,7 @@ static void scx_dump_state(struct scx_exit_info *ei, = size_t dump_len) scx_dump_event(s, &events, DISPATCH_LOCAL_DSQ_OFFLINE); scx_dump_event(s, &events, DISPATCH_KEEP_LAST); scx_dump_event(s, &events, ENQ_SKIP_EXITING); + scx_dump_event(s, &events, BYPASS_DISPATCH); scx_dump_event(s, &events, BYPASS_ACTIVATE); =20 if (seq_buf_has_overflowed(&s) && dump_len >=3D sizeof(trunc_marker)) @@ -7856,6 +7864,7 @@ __bpf_kfunc void scx_bpf_event_stats(struct scx_event= _stats *events, scx_agg_event(&e_sys, e_cpu, SELECT_CPU_FALLBACK); scx_agg_event(&e_sys, e_cpu, DISPATCH_LOCAL_DSQ_OFFLINE); scx_agg_event(&e_sys, e_cpu, DISPATCH_KEEP_LAST); + scx_agg_event(&e_sys, e_cpu, BYPASS_DISPATCH); scx_agg_event(&e_sys, e_cpu, BYPASS_ACTIVATE); } =20 --=20 2.48.1