From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: <linux-pm@vger.kernel.org>, <loongarch@lists.linux.dev>,
<linux-acpi@vger.kernel.org>, <linux-arch@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <kvmarm@lists.linux.dev>,
<x86@kernel.org>, Russell King <linux@armlinux.org.uk>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Miguel Luis <miguel.luis@oracle.com>,
James Morse <james.morse@arm.com>,
Salil Mehta <salil.mehta@huawei.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Cc: <linuxarm@huawei.com>, <justin.he@arm.com>, <jianyong.wu@arm.com>
Subject: [PATCH v5 06/18] ACPI: scan: Add parameter to allow defering some actions in acpi_scan_check_and_detach.
Date: Fri, 12 Apr 2024 15:37:07 +0100 [thread overview]
Message-ID: <20240412143719.11398-7-Jonathan.Cameron@huawei.com> (raw)
In-Reply-To: <20240412143719.11398-1-Jonathan.Cameron@huawei.com>
Precursor patch adds the ability to pass a flag (not yet used) into
acpi_scan_check_and detach(). Done in a separate patch with no
functional changes to reduce complexity of the actual deferal which
follows.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v5: New patch resulting from rebase.
- Internal review suggested we could also do this with flags
so I'm looking for feedback on which option people find
more readable.
---
drivers/acpi/scan.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 7c157bf92695..79b1f4d2b6bd 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -244,13 +244,19 @@ static int acpi_scan_try_to_offline(struct acpi_device *device)
return 0;
}
-static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check)
+struct acpi_scan_c_and_d_param {
+ bool check_status;
+ bool eject;
+};
+
+static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p)
{
struct acpi_scan_handler *handler = adev->handler;
+ struct acpi_scan_c_and_d_param *param = p;
- acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check);
+ acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, p);
- if (check) {
+ if (param->check_status) {
acpi_bus_get_status(adev);
/*
* Skip devices that are still there and take the enabled
@@ -288,7 +294,11 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check)
static void acpi_scan_check_subtree(struct acpi_device *adev)
{
- acpi_scan_check_and_detach(adev, (void *)true);
+ struct acpi_scan_c_and_d_param p = {
+ .check_status = true, /* Not update until after ej0 */
+ .eject = false,
+ };
+ acpi_scan_check_and_detach(adev, &p);
}
static int acpi_scan_hot_remove(struct acpi_device *device)
@@ -2600,7 +2610,12 @@ EXPORT_SYMBOL(acpi_bus_scan);
*/
void acpi_bus_trim(struct acpi_device *adev)
{
- acpi_scan_check_and_detach(adev, NULL);
+ struct acpi_scan_c_and_d_param p = {
+ .check_status = false,
+ .eject = false,
+ };
+
+ acpi_scan_check_and_detach(adev, &p);
}
EXPORT_SYMBOL_GPL(acpi_bus_trim);
--
2.39.2
next prev parent reply other threads:[~2024-04-12 14:40 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-12 14:37 [PATCH v5 00/18] ACPI/arm64: add support for virtual cpu hotplug Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 01/18] cpu: Do not warn on arch_register_cpu() returning -EPROBE_DEFER Jonathan Cameron
2024-04-12 17:42 ` Rafael J. Wysocki
2024-04-22 3:53 ` Gavin Shan
2024-04-12 14:37 ` [PATCH v5 02/18] ACPI: processor: Set the ACPI_COMPANION for the struct cpu instance Jonathan Cameron
2024-04-12 18:10 ` Rafael J. Wysocki
2024-04-15 15:48 ` Jonathan Cameron
2024-04-15 16:16 ` Rafael J. Wysocki
2024-04-15 16:19 ` Rafael J. Wysocki
2024-04-15 16:50 ` Jonathan Cameron
2024-04-15 17:34 ` Jonathan Cameron
2024-04-15 17:41 ` Rafael J. Wysocki
2024-04-16 17:35 ` Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 03/18] ACPI: processor: Register deferred CPUs from acpi_processor_get_info() Jonathan Cameron
2024-04-12 18:30 ` Rafael J. Wysocki
2024-04-12 20:16 ` Russell King (Oracle)
2024-04-12 20:54 ` Thomas Gleixner
2024-04-12 21:52 ` Russell King (Oracle)
2024-04-12 23:23 ` Thomas Gleixner
2024-04-15 8:45 ` Jonathan Cameron
2024-04-15 9:16 ` Jonathan Cameron
2024-04-15 9:31 ` Jonathan Cameron
2024-04-15 11:57 ` Jonathan Cameron
2024-04-15 11:37 ` Rafael J. Wysocki
2024-04-15 11:56 ` Jonathan Cameron
2024-04-15 12:04 ` Rafael J. Wysocki
2024-04-15 12:23 ` Jonathan Cameron
2024-04-16 17:41 ` Jonathan Cameron
2024-04-16 19:02 ` Rafael J. Wysocki
2024-04-17 10:39 ` Jonathan Cameron
2024-04-15 12:37 ` Salil Mehta
2024-04-15 12:41 ` Rafael J. Wysocki
2024-04-15 11:51 ` Salil Mehta
2024-04-15 12:51 ` Rafael J. Wysocki
2024-04-15 15:31 ` Salil Mehta
2024-04-15 16:38 ` Rafael J. Wysocki
2024-04-17 15:01 ` Salil Mehta
2024-04-17 16:19 ` Rafael J. Wysocki
2024-04-15 10:52 ` Jonathan Cameron
2024-04-15 11:11 ` Jonathan Cameron
2024-04-15 11:52 ` Rafael J. Wysocki
2024-04-15 11:07 ` Salil Mehta
2024-04-16 14:00 ` Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 04/18] ACPI: Rename acpi_processor_hotadd_init and remove pre-processor guards Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 05/18] ACPI: utils: Add an acpi_sta_enabled() helper and use it in acpi_processor_make_present() Jonathan Cameron
2024-04-12 14:37 ` Jonathan Cameron [this message]
2024-04-12 14:37 ` [PATCH v5 07/18] ACPI: Add post_eject to struct acpi_scan_handler for cpu hotplug Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 08/18] ACPI: convert acpi_processor_post_eject() to use IS_ENABLED() Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 09/18] ACPI: Check _STA present bit before making CPUs not present Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 10/18] ACPI: Warn when the present bit changes but the feature is not enabled Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 11/18] arm64: acpi: Move get_cpu_for_acpi_id() to a header Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 12/18] irqchip/gic-v3: Don't return errors from gic_acpi_match_gicc() Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 13/18] irqchip/gic-v3: Add support for ACPI's disabled but 'online capable' CPUs Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 14/18] arm64: psci: Ignore DENIED CPUs Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 15/18] arm64: arch_register_cpu() variant to allow checking of ACPI _STA Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 16/18] ACPI: add support to (un)register CPUs based on the _STA enabled bit Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 17/18] arm64: document virtual CPU hotplug's expectations Jonathan Cameron
2024-04-12 14:37 ` [PATCH v5 18/18] cpumask: Add enabled cpumask for present CPUs that can be brought online Jonathan Cameron
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