From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 102C1272E6A; Sun, 16 Nov 2025 20:51:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763326277; cv=none; b=fWhs+mg9NHG8EglEDuVb4oxD4PJiOpp6Vvdnz353Ou084mXLR/0Uw1cvohztpQdWfF2z+Z1TmU/mTKhQBeuu+4oCvbP61uUJAnudAnWQzyWGb2SPkQQlfYWXHbzZjY3SunhX1cKIIGtHLQ5hJp1St7xfbhic7360ZkLh+49exEI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763326277; c=relaxed/simple; bh=NqQjpQ6wmtHhaimTEy5dZdITuRSnH9EVOsOJjL3t7HI=; h=Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type:Date; b=lHhRTDWTpOBYzOhybL5/sEVklMzcL5Rt/TRCuVjDEQpAYgabMLw2u+HWBEDNjX8lWSO3B73IzxK3obzAxDh0xrL6S6SnovN05NwWolAeV63bJOon3SACzHbCf6n2/qlSgTZJI3Ja1Rfqzdhh9K127rdrpZMSrRsiO6yiEbrqFPo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=XCDCSIEe; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=Op6U/YGk; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="XCDCSIEe"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Op6U/YGk" Message-ID: <20251116174750.857118379@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1763326274; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=puOLVz/xusJgMHcGpgny0+0j3GVseKRPTpDHpqHQHdc=; b=XCDCSIEeaaXi25CNH6XVM/r+7lm4QHJAPOeeX9cn5jKSoZVxrJiPfftuIu0kKDCsaWtzKh dsVSAEf4y1efgC56rrTJPrlu18b6aXc3+suhDVXl6UT1eI7H6EcTNY0C5HajI6J9aP49pG 2KN1KpQxHCPY2f1hgEa9FbJDuMnSoZqmozRT9lyFmzzVBdr6RVOnM0Wf8Xpw1wJfbJjQLu yXn8vnfdM+725qSQPpnWCdXAK4gH5Fb4nWCEOqEkPVp2zF1G47PF2SAJ2nTvXfKuUhJmsN Tjw7etYPUTFx6ql/ki4+3IQzYHSyFLlKqMQIS7o/51C07eARF+HfHpUwSIudOw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1763326274; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=puOLVz/xusJgMHcGpgny0+0j3GVseKRPTpDHpqHQHdc=; b=Op6U/YGkjDcDjKzf+rXUqtm7rte3/IhT+aY6T8Dwra6GY4Jmuah7nCHVnh9Go/tMkdotCn KRvvcaIXJbO/ClCA== From: Thomas Gleixner To: LKML Cc: Mathieu Desnoyers , "Paul E. McKenney" , Boqun Feng , Jonathan Corbet , Prakash Sangappa , Madadi Vineeth Reddy , K Prateek Nayak , Steven Rostedt , Sebastian Andrzej Siewior , Arnd Bergmann , linux-arch@vger.kernel.org, Randy Dunlap , Peter Zijlstra Subject: [patch V4 04/12] rseq: Add statistics for time slice extensions References: <20251116173423.031443519@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Sun, 16 Nov 2025 21:51:13 +0100 (CET) Extend the quick statistics with time slice specific fields. Signed-off-by: Thomas Gleixner --- include/linux/rseq_entry.h | 4 ++++ kernel/rseq.c | 12 ++++++++++++ 2 files changed, 16 insertions(+) --- a/include/linux/rseq_entry.h +++ b/include/linux/rseq_entry.h @@ -15,6 +15,10 @@ struct rseq_stats { unsigned long cs; unsigned long clear; unsigned long fixup; + unsigned long s_granted; + unsigned long s_expired; + unsigned long s_revoked; + unsigned long s_yielded; }; DECLARE_PER_CPU(struct rseq_stats, rseq_stats); --- a/kernel/rseq.c +++ b/kernel/rseq.c @@ -138,6 +138,12 @@ static int rseq_stats_show(struct seq_fi stats.cs += data_race(per_cpu(rseq_stats.cs, cpu)); stats.clear += data_race(per_cpu(rseq_stats.clear, cpu)); stats.fixup += data_race(per_cpu(rseq_stats.fixup, cpu)); + if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) { + stats.s_granted += data_race(per_cpu(rseq_stats.s_granted, cpu)); + stats.s_expired += data_race(per_cpu(rseq_stats.s_expired, cpu)); + stats.s_revoked += data_race(per_cpu(rseq_stats.s_revoked, cpu)); + stats.s_yielded += data_race(per_cpu(rseq_stats.s_yielded, cpu)); + } } seq_printf(m, "exit: %16lu\n", stats.exit); @@ -148,6 +154,12 @@ static int rseq_stats_show(struct seq_fi seq_printf(m, "cs: %16lu\n", stats.cs); seq_printf(m, "clear: %16lu\n", stats.clear); seq_printf(m, "fixup: %16lu\n", stats.fixup); + if (IS_ENABLED(CONFIG_RSEQ_SLICE_EXTENSION)) { + seq_printf(m, "sgrant: %16lu\n", stats.s_granted); + seq_printf(m, "sexpir: %16lu\n", stats.s_expired); + seq_printf(m, "srevok: %16lu\n", stats.s_revoked); + seq_printf(m, "syield: %16lu\n", stats.s_yielded); + } return 0; }