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add helper function to run a task on a specific core

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Stefan Lankes 2015-05-31 07:58:05 +02:00
parent a916196c3d
commit 1a256ada95
2 changed files with 41 additions and 2 deletions
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31
hermit/include/hermit/tasks.h
View file

@ -68,7 +68,7 @@ size_t** scheduler(void);
*/
int multitasking_init(void);
/** @brief create a kernel-level task.
/** @brief create a kernel-level task on the current core.
*
* @param id The value behind this pointer will be set to the new task's id
* @param ep Pointer to the entry function for the new task
@ -81,7 +81,21 @@ int multitasking_init(void);
*/
int create_kernel_task(tid_t* id, entry_point_t ep, void* args, uint8_t prio);
/** @brief Create a user level task.
/** @brief create a kernel-level task.
*
* @param id The value behind this pointer will be set to the new task's id
* @param ep Pointer to the entry function for the new task
* @param args Arguments the task shall start with
* @param prio Desired priority of the new kernel task
* @param core_id Start the new task on the core with this id
*
* @return
* - 0 on success
* - -EINVAL (-22) on failure
*/
int create_kernel_task_on_core(tid_t* id, entry_point_t ep, void* args, uint8_t prio, uint32_t core_id);
/** @brief Create a user level task on the current core.
*
* @param id The value behind this pointer will be set to the new task's id
* @param fname Filename of the executable to start the task with
@ -93,6 +107,19 @@ int create_kernel_task(tid_t* id, entry_point_t ep, void* args, uint8_t prio);
*/
int create_user_task(tid_t* id, const char* fame, char** argv);
/** @brief Create a user level task.
*
* @param id The value behind this pointer will be set to the new task's id
* @param fname Filename of the executable to start the task with
* @param argv Pointer to arguments array
* @param core_id Start the new task on the core with this id
*
* @return
* - 0 on success
* - -EINVAL (-22) or -ENOMEM (-12)on failure
*/
int create_user_task_on_core(tid_t* id, const char* fame, char** argv, uint32_t core_id);
/** @brief Create a task with a specific entry point
*
* @todo Don't acquire table_lock for the whole task creation.

12
hermit/kernel/tasks.c
View file

@ -211,6 +211,10 @@ int create_task(tid_t* id, entry_point_t ep, void* arg, uint8_t prio, uint32_t c
return -EINVAL;
if (BUILTIN_EXPECT(prio > MAX_PRIO, 0))
return -EINVAL;
if (BUILTIN_EXPECT(core_id >= MAX_CORES, 0))
return -EINVAL;
if (BUILTIN_EXPECT(!readyqueues[core_id].idle, 0))
return -EINVAL;
spinlock_irqsave_lock(&table_lock);
@ -267,6 +271,14 @@ out:
return ret;
}
int create_kernel_task_on_core(tid_t* id, entry_point_t ep, void* args, uint8_t prio, uint32_t core_id)
{
if (prio > MAX_PRIO)
prio = NORMAL_PRIO;
return create_task(id, ep, args, prio, core_id);
}
int create_kernel_task(tid_t* id, entry_point_t ep, void* args, uint8_t prio)
{
if (prio > MAX_PRIO)