cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/utstate.c

/*******************************************************************************
 *
 * Module Name: utstate - state object support procedures
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2017, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include <acpi/acpi.h>
#include "accommon.h"


#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utstate")

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_push_generic_state
 *
 * PARAMETERS:  list_head           - Head of the state stack
 *              state               - State object to push
 *
 * RETURN:      None
 *
 * DESCRIPTION: Push a state object onto a state stack
 *
 ******************************************************************************/

void acpi_ut_push_generic_state(union acpi_generic_state **list_head, union acpi_generic_state *state) { ACPI_FUNCTION_ENTRY(); /* Push the state object onto the front of the list (stack) */ state->common.next = *list_head; *list_head = state; return; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore35100.00%2100.00%
Total35100.00%2100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_pop_generic_state * * PARAMETERS: list_head - Head of the state stack * * RETURN: The popped state object * * DESCRIPTION: Pop a state object from a state stack * ******************************************************************************/
union acpi_generic_state *acpi_ut_pop_generic_state(union acpi_generic_state **list_head) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); /* Remove the state object at the head of the list (stack) */ state = *list_head; if (state) { /* Update the list head */ *list_head = state->common.next; } return (state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore48100.00%2100.00%
Total48100.00%2100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_create_generic_state * * PARAMETERS: None * * RETURN: The new state object. NULL on failure. * * DESCRIPTION: Create a generic state object. Attempt to obtain one from * the global state cache; If none available, create a new one. * ******************************************************************************/
union acpi_generic_state *acpi_ut_create_generic_state(void) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); state = acpi_os_acquire_object(acpi_gbl_state_cache); if (state) { /* Initialize */ state->common.descriptor_type = ACPI_DESC_TYPE_STATE; } return (state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore44100.00%2100.00%
Total44100.00%2100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_create_thread_state * * PARAMETERS: None * * RETURN: New Thread State. NULL on failure * * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used * to track per-thread info during method execution * ******************************************************************************/
struct acpi_thread_state *acpi_ut_create_thread_state(void) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); /* Create the generic state object */ state = acpi_ut_create_generic_state(); if (!state) { return (NULL); } /* Init fields specific to the update struct */ state->common.descriptor_type = ACPI_DESC_TYPE_STATE_THREAD; state->thread.thread_id = acpi_os_get_thread_id(); /* Check for invalid thread ID - zero is very bad, it will break things */ if (!state->thread.thread_id) { ACPI_ERROR((AE_INFO, "Invalid zero ID from AcpiOsGetThreadId")); state->thread.thread_id = (acpi_thread_id) 1; } return ((struct acpi_thread_state *)state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore95100.00%4100.00%
Total95100.00%4100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_create_update_state * * PARAMETERS: object - Initial Object to be installed in the state * action - Update action to be performed * * RETURN: New state object, null on failure * * DESCRIPTION: Create an "Update State" - a flavor of the generic state used * to update reference counts and delete complex objects such * as packages. * ******************************************************************************/
union acpi_generic_state *acpi_ut_create_update_state(union acpi_operand_object *object, u16 action) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); /* Create the generic state object */ state = acpi_ut_create_generic_state(); if (!state) { return (NULL); } /* Init fields specific to the update struct */ state->common.descriptor_type = ACPI_DESC_TYPE_STATE_UPDATE; state->update.object = object; state->update.value = action; return (state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore71100.00%3100.00%
Total71100.00%3100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_create_pkg_state * * PARAMETERS: object - Initial Object to be installed in the state * action - Update action to be performed * * RETURN: New state object, null on failure * * DESCRIPTION: Create a "Package State" * ******************************************************************************/
union acpi_generic_state *acpi_ut_create_pkg_state(void *internal_object, void *external_object, u16 index) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); /* Create the generic state object */ state = acpi_ut_create_generic_state(); if (!state) { return (NULL); } /* Init fields specific to the update struct */ state->common.descriptor_type = ACPI_DESC_TYPE_STATE_PACKAGE; state->pkg.source_object = (union acpi_operand_object *)internal_object; state->pkg.dest_object = external_object; state->pkg.index = index; state->pkg.num_packages = 1; return (state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore95100.00%3100.00%
Total95100.00%3100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_create_control_state * * PARAMETERS: None * * RETURN: New state object, null on failure * * DESCRIPTION: Create a "Control State" - a flavor of the generic state used * to support nested IF/WHILE constructs in the AML. * ******************************************************************************/
union acpi_generic_state *acpi_ut_create_control_state(void) { union acpi_generic_state *state; ACPI_FUNCTION_ENTRY(); /* Create the generic state object */ state = acpi_ut_create_generic_state(); if (!state) { return (NULL); } /* Init fields specific to the control struct */ state->common.descriptor_type = ACPI_DESC_TYPE_STATE_CONTROL; state->common.state = ACPI_CONTROL_CONDITIONAL_EXECUTING; return (state); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore57100.00%3100.00%
Total57100.00%3100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_delete_generic_state * * PARAMETERS: state - The state object to be deleted * * RETURN: None * * DESCRIPTION: Release a state object to the state cache. NULL state objects * are ignored. * ******************************************************************************/
void acpi_ut_delete_generic_state(union acpi_generic_state *state) { ACPI_FUNCTION_ENTRY(); /* Ignore null state */ if (state) { (void)acpi_os_release_object(acpi_gbl_state_cache, state); } return; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore3096.77%375.00%
Len Brown13.23%125.00%
Total31100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Moore49899.60%981.82%
Len Brown20.40%218.18%
Total500100.00%11100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.