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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Thomas Bogendoerfer <tbogendoerfer@suse.de>,
	Paul Burton <paul.burton@mips.com>,
	Ralf Baechle <ralf@linux-mips.org>,
	James Hogan <jhogan@kernel.org>,
	linux-mips@vger.kernel.org, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.4 02/28] MIPS: kernel: only use i8253 clocksource with periodic clockevent
Date: Tue, 13 Aug 2019 22:25:24 -0400	[thread overview]
Message-ID: <20190814022550.17463-2-sashal@kernel.org> (raw)
In-Reply-To: <20190814022550.17463-1-sashal@kernel.org>

From: Thomas Bogendoerfer <tbogendoerfer@suse.de>

[ Upstream commit a07e3324538a989b7cdbf2c679be6a7f9df2544f ]

i8253 clocksource needs a free running timer. This could only
be used, if i8253 clockevent is set up as periodic.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/kernel/i8253.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c
index c5bc344fc745c..73039746ae364 100644
--- a/arch/mips/kernel/i8253.c
+++ b/arch/mips/kernel/i8253.c
@@ -31,7 +31,8 @@ void __init setup_pit_timer(void)
 
 static int __init init_pit_clocksource(void)
 {
-	if (num_possible_cpus() > 1) /* PIT does not scale! */
+	if (num_possible_cpus() > 1 || /* PIT does not scale! */
+	    !clockevent_state_periodic(&i8253_clockevent))
 		return 0;
 
 	return clocksource_i8253_init();
-- 
2.20.1


  reply	other threads:[~2019-08-14  2:25 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14  2:25 [PATCH AUTOSEL 4.4 01/28] HID: Add 044f:b320 ThrustMaster, Inc. 2 in 1 DT Sasha Levin
2019-08-14  2:25 ` Sasha Levin [this message]
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 03/28] netfilter: ebtables: fix a memory leak bug in compat Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 04/28] bonding: Force slave speed check after link state recovery for 802.3ad Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 05/28] can: dev: call netif_carrier_off() in register_candev() Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 06/28] ASoC: Fail card instantiation if DAI format setup fails Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 07/28] st21nfca_connectivity_event_received: null check the allocation Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 08/28] st_nci_hci_connectivity_event_received: " Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 09/28] ASoC: ti: davinci-mcasp: Correct slot_width posed constraint Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 10/28] net: usb: qmi_wwan: Add the BroadMobi BM818 card Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 11/28] isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain() Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 12/28] isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 13/28] perf bench numa: Fix cpu0 binding Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 14/28] Input: kbtab - sanity check for endpoint type Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 15/28] net: usb: pegasus: fix improper read if get_registers() fail Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 16/28] can: sja1000: force the string buffer NULL-terminated Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 17/28] can: peak_usb: " Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 18/28] NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 19/28] HID: holtek: test for sanity of intfdata Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 20/28] HID: hiddev: avoid opening a disconnected device Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 21/28] HID: hiddev: do cleanup in failure of opening a device Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 22/28] Input: iforce - add sanity checks Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 23/28] net: cxgb3_main: Fix a resource leak in a error path in 'init_one()' Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 24/28] net: hisilicon: make hip04_tx_reclaim non-reentrant Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 25/28] net: hisilicon: fix hip04-xmit never return TX_BUSY Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 26/28] net: hisilicon: Fix dma_map_single failed on arm64 Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 27/28] libata: add SG safety checks in SFF pio transfers Sasha Levin
2019-08-14  2:25 ` [PATCH AUTOSEL 4.4 28/28] selftests: kvm: Adding config fragments Sasha Levin

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