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Updated test0 with a forktest. Fixed timeslices. Updated kmem usage calculations.

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- test0 now forks 16 tasks that each modify a global variable.
- scheduler now gives 1/10th of a second per task. It also does not increase timeslice
  of a task that has scheduled.
- When a memory is granted to the kernel, the distribution of this memory to memcaches
  was calculated in a complicated way. This is now simplified.
This commit is contained in:
Bahadir Balban
2008-09-17 15:19:37 +03:00
parent cb9c5438e2
commit 1ea21d84bd
10 changed files with 75 additions and 59 deletions
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3
include/l4/api/kip.h
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@@ -78,9 +78,6 @@ struct kip {
#define PAGER_TID 0
#define VFS_TID 1
#define BLKDEV_TID 2
#define KERNEL_TID 3
#define MAX_PREDEFINED_TID KERNEL_TID
#define MIN_PREDEFINED_TID 0
#define __PAGERNAME__ "mm0"
#define __KERNELNAME__ "code0"

3
include/l4/generic/scheduler.h
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@@ -12,8 +12,7 @@
/* Ticks per second, try ticks = 1000 + timeslice = 1 for regressed preemption test. */
#define HZ 100
#define TASK_TIMESLICE_DEFAULT 5000
/* #define TASK_TIMESLICE_DEFAULT (HZ/100)*/
#define TASK_TIMESLICE_DEFAULT HZ/100
static inline struct ktcb *current_task(void)
{

17
include/l4/glue/arm/memory.h
View File

@@ -89,15 +89,14 @@ pmd_table_t *alloc_boot_pmd(void);
* The granted memory is used in an architecture-specific way, e.g. for pgds,
* pmds, and kernel stack. Therefore this should be defined per-arch.
*/
typedef struct kmem_usage_per_grant {
int grant_size; /* The size of the grant given by pager */
int task_size_avg; /* Average memory a task occupies */
int tasks_per_kmem_grant; /* Num of tasks to allocate for, per grant */
int pg_total; /* Total size of page allocs needed per grant */
int pmd_total; /* Total size of pmd allocs needed per grant */
int pgd_total; /* Total size of pgd allocs needed per grant */
int extra; /* Extra unused space, left per grant */
} kmem_usage_per_grant_t;
typedef struct grant_kmem_usage {
unsigned long total_size;
unsigned long total_tasks;
unsigned long total_pgds;
unsigned long total_pmds;
unsigned long total_tcbs;
unsigned long extra;
} grant_kmem_usage_t;
void paging_init(void);
void init_pmd_tables(void);