cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/amd/powerplay/hwmgr/functiontables.c

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include "hwmgr.h"


static int phm_run_table(struct pp_hwmgr *hwmgr, struct phm_runtime_table_header *rt_table, void *input, void *output, void *temp_storage) { int result = 0; phm_table_function *function; if (rt_table->function_list == NULL) { pr_debug("this function not implement!\n"); return 0; } for (function = rt_table->function_list; NULL != *function; function++) { int tmp = (*function)(hwmgr, input, output, temp_storage, result); if (tmp == PP_Result_TableImmediateExit) break; if (tmp) { if (0 == result) result = tmp; if (rt_table->exit_error) break; } } return result; }

Contributors

PersonTokensPropCommitsCommitProp
Jammy Zhou10785.60%125.00%
Rex Zhu1612.80%125.00%
Huang Rui10.80%125.00%
Arindam Nath10.80%125.00%
Total125100.00%4100.00%


int phm_dispatch_table(struct pp_hwmgr *hwmgr, struct phm_runtime_table_header *rt_table, void *input, void *output) { int result; void *temp_storage; if (hwmgr == NULL || rt_table == NULL) { pr_err("Invalid Parameter!\n"); return -EINVAL; } if (0 != rt_table->storage_size) { temp_storage = kzalloc(rt_table->storage_size, GFP_KERNEL); if (temp_storage == NULL) { pr_err("Could not allocate table temporary storage\n"); return -ENOMEM; } } else { temp_storage = NULL; } result = phm_run_table(hwmgr, rt_table, input, output, temp_storage); kfree(temp_storage); return result; }

Contributors

PersonTokensPropCommitsCommitProp
Jammy Zhou10588.24%120.00%
SF Markus Elfring75.88%120.00%
Huang Rui43.36%120.00%
Rex Zhu32.52%240.00%
Total119100.00%5100.00%


int phm_construct_table(struct pp_hwmgr *hwmgr, const struct phm_master_table_header *master_table, struct phm_runtime_table_header *rt_table) { uint32_t function_count = 0; const struct phm_master_table_item *table_item; uint32_t size; phm_table_function *run_time_list; phm_table_function *rtf; if (hwmgr == NULL || master_table == NULL || rt_table == NULL) { pr_err("Invalid Parameter!\n"); return -EINVAL; } for (table_item = master_table->master_list; NULL != table_item->tableFunction; table_item++) { if ((NULL == table_item->isFunctionNeededInRuntimeTable) || (table_item->isFunctionNeededInRuntimeTable(hwmgr))) function_count++; } size = (function_count + 1) * sizeof(phm_table_function); run_time_list = kzalloc(size, GFP_KERNEL); if (NULL == run_time_list) return -ENOMEM; rtf = run_time_list; for (table_item = master_table->master_list; NULL != table_item->tableFunction; table_item++) { if ((rtf - run_time_list) > function_count) { pr_err("Check function results have changed\n"); kfree(run_time_list); return -EINVAL; } if ((NULL == table_item->isFunctionNeededInRuntimeTable) || (table_item->isFunctionNeededInRuntimeTable(hwmgr))) { *(rtf++) = table_item->tableFunction; } } if ((rtf - run_time_list) > function_count) { pr_err("Check function results have changed\n"); kfree(run_time_list); return -EINVAL; } *rtf = NULL; rt_table->function_list = run_time_list; rt_table->exit_error = (0 != (master_table->flags & PHM_MasterTableFlag_ExitOnError)); rt_table->storage_size = master_table->storage_size; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jammy Zhou27496.14%125.00%
Huang Rui62.11%125.00%
Rex Zhu41.40%125.00%
Nils Wallménius10.35%125.00%
Total285100.00%4100.00%


int phm_destroy_table(struct pp_hwmgr *hwmgr, struct phm_runtime_table_header *rt_table) { if (hwmgr == NULL || rt_table == NULL) { pr_err("Invalid Parameter\n"); return -EINVAL; } if (NULL == rt_table->function_list) return 0; kfree(rt_table->function_list); rt_table->function_list = NULL; rt_table->storage_size = 0; rt_table->exit_error = false; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jammy Zhou7296.00%133.33%
Huang Rui22.67%133.33%
Rex Zhu11.33%133.33%
Total75100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Jammy Zhou57192.54%114.29%
Rex Zhu243.89%228.57%
Huang Rui132.11%114.29%
SF Markus Elfring71.13%114.29%
Arindam Nath10.16%114.29%
Nils Wallménius10.16%114.29%
Total617100.00%7100.00%
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