* Re: [RFC PATCH] ACPI: Introduce acpi_unload_parent_table() usages in Linux kernel.
2015-01-22 22:43 ` Rafael J. Wysocki
@ 2015-01-22 22:43 ` Bjorn Helgaas
2015-01-26 1:59 ` Zheng, Lv
1 sibling, 0 replies; 4+ messages in thread
From: Bjorn Helgaas @ 2015-01-22 22:43 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Lv Zheng, Rafael J. Wysocki, Len Brown, Lv Zheng,
linux-acpi@vger.kernel.org, Octavian Purdila, Prarit Bhargava,
linux-pci@vger.kernel.org, Tony Luck, Fenghua Yu,
linux-ia64@vger.kernel.org
On Thu, Jan 22, 2015 at 4:43 PM, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> On Thursday, January 22, 2015 02:37:49 PM Lv Zheng wrote:
>> ACPICA has implemented acpi_unload_parent_table() which can exactly replace
>> the acpi_get_id()/acpi_unload_table_id() implemented in Linux kernel. The
>> acpi_unload_parent_table() has been unit tested in ACPICA simulation
>> environment.
>>
>> This patch can also help to reduce the source code differences between
>> Linux and ACPICA.
>
> Looks OK to me.
>
> Do you want me to pick it up?
OK by me if you take it.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
>> Signed-off-by: Lv Zheng <lv.zheng@intel.com>
>> Cc: Octavian Purdila <octavian.purdila@intel.com>
>> Cc: Prarit Bhargava <prarit@sgi.com>
>> Cc: Bjorn Helgaas <bhelgaas@google.com>
>> Cc: linux-pci@vger.kernel.org
>> Cc: Tony Luck <tony.luck@intel.com>
>> Cc: Fenghua Yu <fenghua.yu@intel.com>
>> Cc: linux-ia64@vger.kernel.org
>> ---
>> drivers/acpi/acpica/nsxfobj.c | 44 -------------------------------------
>> drivers/acpi/acpica/tbxface.c | 39 --------------------------------
>> drivers/pci/hotplug/sgi_hotplug.c | 13 ++++++-----
>> include/acpi/acpixf.h | 6 -----
>> 4 files changed, 7 insertions(+), 95 deletions(-)
>>
>> diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
>> index dae9401..51a8329 100644
>> --- a/drivers/acpi/acpica/nsxfobj.c
>> +++ b/drivers/acpi/acpica/nsxfobj.c
>> @@ -53,50 +53,6 @@ ACPI_MODULE_NAME("nsxfobj")
>>
>> /*******************************************************************************
>> *
>> - * FUNCTION: acpi_get_id
>> - *
>> - * PARAMETERS: Handle - Handle of object whose id is desired
>> - * ret_id - Where the id will be placed
>> - *
>> - * RETURN: Status
>> - *
>> - * DESCRIPTION: This routine returns the owner id associated with a handle
>> - *
>> - ******************************************************************************/
>> -acpi_status acpi_get_id(acpi_handle handle, acpi_owner_id * ret_id)
>> -{
>> - struct acpi_namespace_node *node;
>> - acpi_status status;
>> -
>> - /* Parameter Validation */
>> -
>> - if (!ret_id) {
>> - return (AE_BAD_PARAMETER);
>> - }
>> -
>> - status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
>> - if (ACPI_FAILURE(status)) {
>> - return (status);
>> - }
>> -
>> - /* Convert and validate the handle */
>> -
>> - node = acpi_ns_validate_handle(handle);
>> - if (!node) {
>> - (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
>> - return (AE_BAD_PARAMETER);
>> - }
>> -
>> - *ret_id = node->owner_id;
>> -
>> - status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
>> - return (status);
>> -}
>> -
>> -ACPI_EXPORT_SYMBOL(acpi_get_id)
>> -
>> -/*******************************************************************************
>> - *
>> * FUNCTION: acpi_get_type
>> *
>> * PARAMETERS: handle - Handle of object whose type is desired
>> diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
>> index 6482b0d..0f9dd80 100644
>> --- a/drivers/acpi/acpica/tbxface.c
>> +++ b/drivers/acpi/acpica/tbxface.c
>> @@ -265,45 +265,6 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header)
>>
>> /*******************************************************************************
>> *
>> - * FUNCTION: acpi_unload_table_id
>> - *
>> - * PARAMETERS: id - Owner ID of the table to be removed.
>> - *
>> - * RETURN: Status
>> - *
>> - * DESCRIPTION: This routine is used to force the unload of a table (by id)
>> - *
>> - ******************************************************************************/
>> -acpi_status acpi_unload_table_id(acpi_owner_id id)
>> -{
>> - int i;
>> - acpi_status status = AE_NOT_EXIST;
>> -
>> - ACPI_FUNCTION_TRACE(acpi_unload_table_id);
>> -
>> - /* Find table in the global table list */
>> - for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
>> - if (id != acpi_gbl_root_table_list.tables[i].owner_id) {
>> - continue;
>> - }
>> - /*
>> - * Delete all namespace objects owned by this table. Note that these
>> - * objects can appear anywhere in the namespace by virtue of the AML
>> - * "Scope" operator. Thus, we need to track ownership by an ID, not
>> - * simply a position within the hierarchy
>> - */
>> - acpi_tb_delete_namespace_by_owner(i);
>> - status = acpi_tb_release_owner_id(i);
>> - acpi_tb_set_table_loaded_flag(i, FALSE);
>> - break;
>> - }
>> - return_ACPI_STATUS(status);
>> -}
>> -
>> -ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
>> -
>> -/*******************************************************************************
>> - *
>> * FUNCTION: acpi_get_table_with_size
>> *
>> * PARAMETERS: signature - ACPI signature of needed table
>> diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
>> index bada2099..c32fb78 100644
>> --- a/drivers/pci/hotplug/sgi_hotplug.c
>> +++ b/drivers/pci/hotplug/sgi_hotplug.c
>> @@ -475,7 +475,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
>> struct slot *slot = bss_hotplug_slot->private;
>> struct pci_dev *dev, *temp;
>> int rc;
>> - acpi_owner_id ssdt_id = 0;
>> + acpi_handle ssdt_hdl = NULL;
>>
>> /* Acquire update access to the bus */
>> mutex_lock(&sn_hotplug_mutex);
>> @@ -522,7 +522,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
>> if (ACPI_SUCCESS(ret) &&
>> (adr>>16) == (slot->device_num + 1)) {
>> /* retain the owner id */
>> - acpi_get_id(chandle, &ssdt_id);
>> + ssdt_hdl = chandle;
>>
>> ret = acpi_bus_get_device(chandle,
>> &device);
>> @@ -547,12 +547,13 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
>> pci_unlock_rescan_remove();
>>
>> /* Remove the SSDT for the slot from the ACPI namespace */
>> - if (SN_ACPI_BASE_SUPPORT() && ssdt_id) {
>> + if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) {
>> acpi_status ret;
>> - ret = acpi_unload_table_id(ssdt_id);
>> + ret = acpi_unload_parent_table(ssdt_hdl);
>> if (ACPI_FAILURE(ret)) {
>> - printk(KERN_ERR "%s: acpi_unload_table_id failed (0x%x) for id %d\n",
>> - __func__, ret, ssdt_id);
>> + acpi_handle_err(ssdt_hdl,
>> + "%s: acpi_unload_parent_table failed (0x%x)\n",
>> + __func__, ret);
>> /* try to continue on */
>> }
>> }
>> diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
>> index 5ba7846..5dd21bc 100644
>> --- a/include/acpi/acpixf.h
>> +++ b/include/acpi/acpixf.h
>> @@ -891,12 +891,6 @@ ACPI_APP_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(1)
>> ACPI_GLOBAL(u8, acpi_gbl_permanent_mmap);
>>
>> ACPI_EXTERNAL_RETURN_STATUS(acpi_status
>> - acpi_get_id(acpi_handle object,
>> - acpi_owner_id * out_type))
>> -
>> -ACPI_EXTERNAL_RETURN_STATUS(acpi_status acpi_unload_table_id(acpi_owner_id id))
>> -
>> -ACPI_EXTERNAL_RETURN_STATUS(acpi_status
>> acpi_get_table_with_size(acpi_string signature,
>> u32 instance,
>> struct acpi_table_header
>>
>
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 4+ messages in thread* RE: [RFC PATCH] ACPI: Introduce acpi_unload_parent_table() usages in Linux kernel.
2015-01-22 22:43 ` Rafael J. Wysocki
2015-01-22 22:43 ` Bjorn Helgaas
@ 2015-01-26 1:59 ` Zheng, Lv
1 sibling, 0 replies; 4+ messages in thread
From: Zheng, Lv @ 2015-01-26 1:59 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Wysocki, Rafael J, Brown, Len, Lv Zheng,
linux-acpi@vger.kernel.org, Purdila, Octavian, Prarit Bhargava,
Bjorn Helgaas, linux-pci@vger.kernel.org, Luck, Tony, Yu, Fenghua,
linux-ia64@vger.kernel.org
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