From: Sasha Levin <sashal@kernel.org> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Peter Zijlstra <peterz@infradead.org>, Stafford Horne <shorne@gmail.com>, Sasha Levin <sashal@kernel.org>, openrisc@lists.librecores.org Subject: [PATCH AUTOSEL 5.4 43/52] openrisc: Define memory barrier mb Date: Mon, 24 May 2021 10:48:53 -0400 [thread overview] Message-ID: <20210524144903.2498518-43-sashal@kernel.org> (raw) In-Reply-To: <20210524144903.2498518-1-sashal@kernel.org> From: Peter Zijlstra <peterz@infradead.org> [ Upstream commit 8b549c18ae81dbc36fb11e4aa08b8378c599ca95 ] This came up in the discussion of the requirements of qspinlock on an architecture. OpenRISC uses qspinlock, but it was noticed that the memmory barrier was not defined. Peter defined it in the mail thread writing: As near as I can tell this should do. The arch spec only lists this one instruction and the text makes it sound like a completion barrier. This is correct so applying this patch. Signed-off-by: Peter Zijlstra <peterz@infradead.org> [shorne@gmail.com:Turned the mail into a patch] Signed-off-by: Stafford Horne <shorne@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/openrisc/include/asm/barrier.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 arch/openrisc/include/asm/barrier.h diff --git a/arch/openrisc/include/asm/barrier.h b/arch/openrisc/include/asm/barrier.h new file mode 100644 index 000000000000..7538294721be --- /dev/null +++ b/arch/openrisc/include/asm/barrier.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_BARRIER_H +#define __ASM_BARRIER_H + +#define mb() asm volatile ("l.msync" ::: "memory") + +#include <asm-generic/barrier.h> + +#endif /* __ASM_BARRIER_H */ -- 2.30.2
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org> To: openrisc@lists.librecores.org Subject: [OpenRISC] [PATCH AUTOSEL 5.4 43/52] openrisc: Define memory barrier mb Date: Mon, 24 May 2021 10:48:53 -0400 [thread overview] Message-ID: <20210524144903.2498518-43-sashal@kernel.org> (raw) In-Reply-To: <20210524144903.2498518-1-sashal@kernel.org> From: Peter Zijlstra <peterz@infradead.org> [ Upstream commit 8b549c18ae81dbc36fb11e4aa08b8378c599ca95 ] This came up in the discussion of the requirements of qspinlock on an architecture. OpenRISC uses qspinlock, but it was noticed that the memmory barrier was not defined. Peter defined it in the mail thread writing: As near as I can tell this should do. The arch spec only lists this one instruction and the text makes it sound like a completion barrier. This is correct so applying this patch. Signed-off-by: Peter Zijlstra <peterz@infradead.org> [shorne at gmail.com:Turned the mail into a patch] Signed-off-by: Stafford Horne <shorne@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/openrisc/include/asm/barrier.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 arch/openrisc/include/asm/barrier.h diff --git a/arch/openrisc/include/asm/barrier.h b/arch/openrisc/include/asm/barrier.h new file mode 100644 index 000000000000..7538294721be --- /dev/null +++ b/arch/openrisc/include/asm/barrier.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_BARRIER_H +#define __ASM_BARRIER_H + +#define mb() asm volatile ("l.msync" ::: "memory") + +#include <asm-generic/barrier.h> + +#endif /* __ASM_BARRIER_H */ -- 2.30.2
next prev parent reply other threads:[~2021-05-24 15:05 UTC|newest] Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-24 14:48 [PATCH AUTOSEL 5.4 01/52] platform/x86: hp_accel: Avoid invoking _INI to speed up resume Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 02/52] gpio: cadence: Add missing MODULE_DEVICE_TABLE Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 03/52] Revert "media: usb: gspca: add a missed check for goto_low_power" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 04/52] Revert "ALSA: sb: fix a missing check of snd_ctl_add" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 05/52] Revert "serial: max310x: pass return value of spi_register_driver" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 06/52] serial: max310x: unregister uart driver in case of failure and abort Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 07/52] Revert "net: fujitsu: fix a potential NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 08/52] net: fujitsu: fix potential null-ptr-deref Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 09/52] Revert "net/smc: fix a NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 10/52] net: caif: remove BUG_ON(dev == NULL) in caif_xmit Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 11/52] Revert "char: hpet: fix a missing check of ioremap" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 12/52] char: hpet: add checks after calling ioremap Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 13/52] Revert "ALSA: gus: add a check of the status of snd_ctl_add" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 14/52] ALSA: sb8: Add a comment note regarding an unused pointer Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 15/52] Revert "ALSA: usx2y: Fix potential NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 16/52] Revert "isdn: mISDNinfineon: fix " Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 17/52] isdn: mISDNinfineon: check/cleanup ioremap failure correctly in setup_io Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 18/52] Revert "ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd()" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 19/52] ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd() Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 20/52] Revert "isdn: mISDN: Fix potential NULL pointer dereference of kzalloc" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 21/52] isdn: mISDN: correctly handle ph_info allocation failure in hfcsusb_ph_info Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 22/52] Revert "dmaengine: qcom_hidma: Check for driver register failure" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 23/52] dmaengine: qcom_hidma: comment platform_driver_register call Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 24/52] Revert "libertas: add checks for the return value of sysfs_create_group" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 25/52] libertas: register sysfs groups properly Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 26/52] Revert "ASoC: rt5645: fix a NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 27/52] ASoC: rt5645: add error checking to rt5645_probe function Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 28/52] Revert "ASoC: cs43130: fix a NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 29/52] ASoC: cs43130: handle errors in cs43130_probe() properly Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 30/52] Revert "media: dvb: Add check on sp8870_readreg" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 31/52] media: dvb: Add check on sp8870_readreg return Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 32/52] Revert "media: gspca: mt9m111: Check write_bridge for timeout" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 33/52] media: gspca: mt9m111: Check write_bridge for timeout Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 34/52] Revert "media: gspca: Check the return value of write_bridge for timeout" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 35/52] media: gspca: properly check for errors in po1030_probe() Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 36/52] Revert "net: liquidio: fix a NULL pointer dereference" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 37/52] net: liquidio: Add missing null pointer checks Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 38/52] Revert "brcmfmac: add a check for the status of usb_register" Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 39/52] brcmfmac: properly check for bus register errors Sasha Levin 2021-05-25 6:38 ` Arend van Spriel 2021-05-25 6:43 ` Greg Kroah-Hartman 2021-05-25 7:04 ` Arend Van Spriel 2021-05-25 7:11 ` Greg Kroah-Hartman 2021-05-25 7:23 ` Arend van Spriel 2021-05-25 7:26 ` Greg Kroah-Hartman 2021-05-25 7:40 ` Arend van Spriel 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 40/52] cdrom: gdrom: initialize global variable at init time Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 41/52] btrfs: return whole extents in fiemap Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 42/52] scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic Sasha Levin 2021-05-24 14:48 ` Sasha Levin [this message] 2021-05-24 14:48 ` [OpenRISC] [PATCH AUTOSEL 5.4 43/52] openrisc: Define memory barrier mb Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 44/52] btrfs: do not BUG_ON in link_to_fixup_dir Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 45/52] platform/x86: hp-wireless: add AMD's hardware id to the supported list Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 46/52] platform/x86: intel_punit_ipc: Append MODULE_DEVICE_TABLE for ACPI Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 47/52] platform/x86: touchscreen_dmi: Add info for the Mediacom Winpad 7.0 W700 tablet Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 48/52] SMB3: incorrect file id in requests compounded with open Sasha Levin 2021-05-24 14:48 ` [PATCH AUTOSEL 5.4 49/52] drm/amd/display: Disconnect non-DP with no EDID Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:48 ` Sasha Levin 2021-05-24 14:49 ` [PATCH AUTOSEL 5.4 50/52] drm/amd/amdgpu: fix refcount leak Sasha Levin 2021-05-24 14:49 ` Sasha Levin 2021-05-24 14:49 ` Sasha Levin 2021-05-24 14:49 ` [PATCH AUTOSEL 5.4 51/52] drm/amdgpu: Fix a use-after-free Sasha Levin 2021-05-24 14:49 ` Sasha Levin 2021-05-24 14:49 ` Sasha Levin 2021-05-24 14:49 ` [PATCH AUTOSEL 5.4 52/52] drm/amd/amdgpu: fix a potential deadlock in gpu reset Sasha Levin 2021-05-24 14:49 ` Sasha Levin 2021-05-24 14:49 ` Sasha Levin
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