linux-kernel - [PATCH v1 4/4] ACPI: OSL: Use GFP_KERNEL for work item allocations

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Date:   Wed, 29 Nov 2023 14:52:22 +0100
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Michal Wilczynski <michal.wilczynski@...el.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH v1 4/4] ACPI: OSL: Use GFP_KERNEL for work item allocations

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

After the recent modification changing the ACPI SCI interrupt handler
into a threaded one, the SCI interrupt handler code does not run in
interrupt context any more and acpi_os_execute(), that may be invoked
by it, need not use GFP_ATOMIC for allocating work items.

Make it use GFP_KERNEL instead.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/acpi/osl.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Index: linux-pm/drivers/acpi/osl.c
===================================================================
--- linux-pm.orig/drivers/acpi/osl.c
+++ linux-pm/drivers/acpi/osl.c
@@ -1084,8 +1084,7 @@ acpi_status acpi_os_execute(acpi_execute
 	 * parameters we can't use the approach some kernel code uses of
 	 * having a static work_struct.
 	 */
-
-	dpc = kzalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
+	dpc = kzalloc(sizeof(struct acpi_os_dpc), GFP_KERNEL);
 	if (!dpc)
 		return AE_NO_MEMORY;