From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 D1D2C146588; Thu, 13 Feb 2025 15:24:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739460286; cv=none; b=KmuX1rvD+NpXUKrWUnQd6d2NuPv1YrsFpo/0i3TQtkN+On3EurmixMG7lCvihy9ZRC+YvWyGXhqljOhUV3JkP2sBBmm7JuvGyq6PxN3xXssmWhkWztV8fUDFMlLMinh6pYmPzHrInkB2G1mMselqIZywGQhdYErmmCJ56kfSNn4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739460286; c=relaxed/simple; bh=jhsNI+N1Ht2S3gvjwRgjQ/KCe4T4JtCrSU3ssn0j8FM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P3By5W6TTFZcc5OTTr/sXJ/CcHHREW6Mx93kD6V1MSSieGsmjC3WSMsMbPHk1gmWs3wBEPuOoYUoNql8yfQ8VOB5rgkd+S/7HDpYQJFNRglgWDTo0A28i5/GWDae1eCBi4BzzfvYUb2h+4FC4a1EI77jofta9UY2rzRU1+KPxmg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JGLk97iz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JGLk97iz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34545C4CEE4; Thu, 13 Feb 2025 15:24:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739460286; bh=jhsNI+N1Ht2S3gvjwRgjQ/KCe4T4JtCrSU3ssn0j8FM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JGLk97iznxL2dVz39b5eBgKlNl2ptRsz4UltFPQRsFHydS/+WKHqDGlgJ6lFMhWh0 2Eqv1KtEWt7FqmSCxNmUdJ3T6GWCH+WY7dVC4KPVIMswv2r4s2xCkVmYJ2w1VnA86M tBEwDKuuR2RrEfXngYpNrB51FoYdhCBwozC9NGhM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dragos Tatulea , Vadim Fedorenko , Tariq Toukan , Paolo Abeni , Sasha Levin Subject: [PATCH 6.6 036/273] net/mlx5: use do_aux_work for PHC overflow checks Date: Thu, 13 Feb 2025 15:26:48 +0100 Message-ID: <20250213142408.783211802@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213142407.354217048@linuxfoundation.org> References: <20250213142407.354217048@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vadim Fedorenko [ Upstream commit e61e6c415ba9ff2b32bb6780ce1b17d1d76238f1 ] The overflow_work is using system wq to do overflow checks and updates for PHC device timecounter, which might be overhelmed by other tasks. But there is dedicated kthread in PTP subsystem designed for such things. This patch changes the work queue to proper align with PTP subsystem and to avoid overloading system work queue. The adjfine() function acts the same way as overflow check worker, we can postpone ptp aux worker till the next overflow period after adjfine() was called. Reviewed-by: Dragos Tatulea Signed-off-by: Vadim Fedorenko Acked-by: Tariq Toukan Link: https://patch.msgid.link/20250107104812.380225-1-vadfed@meta.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- .../ethernet/mellanox/mlx5/core/lib/clock.c | 24 ++++++++++--------- include/linux/mlx5/driver.h | 1 - 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c index 0c83ef174275a..f00702bf781f1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c @@ -237,17 +237,16 @@ static void mlx5_pps_out(struct work_struct *work) } } -static void mlx5_timestamp_overflow(struct work_struct *work) +static long mlx5_timestamp_overflow(struct ptp_clock_info *ptp_info) { - struct delayed_work *dwork = to_delayed_work(work); struct mlx5_core_dev *mdev; struct mlx5_timer *timer; struct mlx5_clock *clock; unsigned long flags; - timer = container_of(dwork, struct mlx5_timer, overflow_work); - clock = container_of(timer, struct mlx5_clock, timer); + clock = container_of(ptp_info, struct mlx5_clock, ptp_info); mdev = container_of(clock, struct mlx5_core_dev, clock); + timer = &clock->timer; if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) goto out; @@ -258,7 +257,7 @@ static void mlx5_timestamp_overflow(struct work_struct *work) write_sequnlock_irqrestore(&clock->lock, flags); out: - schedule_delayed_work(&timer->overflow_work, timer->overflow_period); + return timer->overflow_period; } static int mlx5_ptp_settime_real_time(struct mlx5_core_dev *mdev, @@ -435,6 +434,7 @@ static int mlx5_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) timer->cycles.mult = mult; mlx5_update_clock_info_page(mdev); write_sequnlock_irqrestore(&clock->lock, flags); + ptp_schedule_worker(clock->ptp, timer->overflow_period); return 0; } @@ -770,6 +770,7 @@ static const struct ptp_clock_info mlx5_ptp_clock_info = { .settime64 = mlx5_ptp_settime, .enable = NULL, .verify = NULL, + .do_aux_work = mlx5_timestamp_overflow, }; static int mlx5_query_mtpps_pin_mode(struct mlx5_core_dev *mdev, u8 pin, @@ -970,12 +971,11 @@ static void mlx5_init_overflow_period(struct mlx5_clock *clock) do_div(ns, NSEC_PER_SEC / HZ); timer->overflow_period = ns; - INIT_DELAYED_WORK(&timer->overflow_work, mlx5_timestamp_overflow); - if (timer->overflow_period) - schedule_delayed_work(&timer->overflow_work, 0); - else + if (!timer->overflow_period) { + timer->overflow_period = HZ; mlx5_core_warn(mdev, - "invalid overflow period, overflow_work is not scheduled\n"); + "invalid overflow period, overflow_work is scheduled once per second\n"); + } if (clock_info) clock_info->overflow_period = timer->overflow_period; @@ -1061,6 +1061,9 @@ void mlx5_init_clock(struct mlx5_core_dev *mdev) MLX5_NB_INIT(&clock->pps_nb, mlx5_pps_event, PPS_EVENT); mlx5_eq_notifier_register(mdev, &clock->pps_nb); + + if (clock->ptp) + ptp_schedule_worker(clock->ptp, 0); } void mlx5_cleanup_clock(struct mlx5_core_dev *mdev) @@ -1077,7 +1080,6 @@ void mlx5_cleanup_clock(struct mlx5_core_dev *mdev) } cancel_work_sync(&clock->pps_info.out_work); - cancel_delayed_work_sync(&clock->timer.overflow_work); if (mdev->clock_info) { free_page((unsigned long)mdev->clock_info); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 38a8ff9c685cb..69d844b34da0d 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -709,7 +709,6 @@ struct mlx5_timer { struct timecounter tc; u32 nominal_c_mult; unsigned long overflow_period; - struct delayed_work overflow_work; }; struct mlx5_clock { -- 2.39.5