Changeset 2fa10f6 in mainline

Timestamp:

2010-09-11T22:28:59Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5203efb1

Parents:

7431b665

Message:

Remove syscall for controlling preemption.

Files:

• kernel/generic/include/ddi/ddi.h (modified) (1 diff)
• kernel/generic/include/security/cap.h (modified) (1 diff)
• kernel/generic/include/syscall/syscall.h (modified) (1 diff)
• kernel/generic/src/ddi/ddi.c (modified) (1 diff)
• kernel/generic/src/main/kinit.c (modified) (1 diff)
• kernel/generic/src/syscall/syscall.c (modified) (1 diff)
• uspace/app/trace/syscalls.c (modified) (1 diff)
• uspace/lib/c/generic/ddi.c (modified) (1 diff)
• uspace/lib/c/include/ddi.h (modified) (1 diff)

kernel/generic/include/ddi/ddi.h

@@ -54 +54 @@
 extern unative_t sys_physmem_map(unative_t, unative_t, unative_t, unative_t);
 extern unative_t sys_iospace_enable(ddi_ioarg_t *);
-extern unative_t sys_preempt_control(int);
 
 /*

kernel/generic/include/security/cap.h

@@ -70 +70 @@
 
 /**
- * CAP_PREEMPT_CONTROL allows its holder to disable/enable preemption.
- */
-#define CAP_PREEMPT_CONTROL     (1<<3)
-
-/**
  * CAP_IRQ_REG entitles its holder to register IRQ handlers.
  */
-#define CAP_IRQ_REG             (1<<4) 
+#define CAP_IRQ_REG             (1<<3) 
 
 typedef uint32_t cap_t;

kernel/generic/include/syscall/syscall.h

@@ -80 +80 @@
         SYS_PHYSMEM_MAP,
         SYS_IOSPACE_ENABLE,
-        SYS_PREEMPT_CONTROL,
         
         SYS_SYSINFO_GET_TAG,

kernel/generic/src/ddi/ddi.c

@@ -258 +258 @@
 }
 
-/** Disable or enable preemption.
- *
- * @param enable If non-zero, the preemption counter will be decremented,
- *               leading to potential enabling of preemption. Otherwise
- *               the preemption counter will be incremented, preventing
- *               preemption from occurring.
- *
- * @return Zero on success or EPERM if callers capabilities are not sufficient.
- *
- */
-unative_t sys_preempt_control(int enable)
-{
-        if (!(cap_get(TASK) & CAP_PREEMPT_CONTROL))
-                return EPERM;
-        
-        if (enable)
-                preemption_enable();
-        else
-                preemption_disable();
-        
-        return 0;
-}
-
 /** @}
  */

kernel/generic/src/main/kinit.c

@@ -208 +208 @@
                          */
                         cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
-                            CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
+                            CAP_IO_MANAGER | CAP_IRQ_REG);
                         
                         if (!ipc_phone_0)

kernel/generic/src/syscall/syscall.c

@@ -159 +159 @@
         (syshandler_t) sys_physmem_map,
         (syshandler_t) sys_iospace_enable,
-        (syshandler_t) sys_preempt_control,
         
         /* Sysinfo syscalls */

uspace/app/trace/syscalls.c

@@ -73 +73 @@
     [SYS_PHYSMEM_MAP] = { "physmem_map",                4,      V_ERRNO },
     [SYS_IOSPACE_ENABLE] = { "iospace_enable",          1,      V_ERRNO },
-    [SYS_PREEMPT_CONTROL] = { "preempt_control",        1,      V_ERRNO },
 
     [SYS_SYSINFO_GET_TAG] = { "sysinfo_get_tag",                2,      V_INTEGER },

uspace/lib/c/generic/ddi.c

@@ -96 +96 @@
 }
 
-/** Interrupt control
- *
- * @param enable        1 - enable interrupts, 0 - disable interrupts
- */
-int preemption_control(int enable)
-{
-        return __SYSCALL1(SYS_PREEMPT_CONTROL, (sysarg_t) enable);
-}
-
 /** Enable PIO for specified I/O range.
  *

uspace/lib/c/include/ddi.h

@@ -41 +41 @@
 extern int physmem_map(void *, void *, unsigned long, int);
 extern int iospace_enable(task_id_t, void *, unsigned long);
-extern int preemption_control(int);
 extern int pio_enable(void *, size_t, void **);