diff options
Diffstat (limited to 'libgloss/sparc_leon/kernel_sched.c')
-rw-r--r-- | libgloss/sparc_leon/kernel_sched.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/libgloss/sparc_leon/kernel_sched.c b/libgloss/sparc_leon/kernel_sched.c deleted file mode 100644 index 2b485c0fe..000000000 --- a/libgloss/sparc_leon/kernel_sched.c +++ /dev/null @@ -1,84 +0,0 @@ -/* - * Copyright (c) 2011 Aeroflex Gaisler - * - * BSD license: - * - * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <asm-leon/contextswitch.h> -#include <asm-leon/leonbare_kernel.h> -#include <asm-leon/leonbare_debug.h> -#include <asm-leon/stack.h> -#include <asm-leon/leonstack.h> -#include <asm-leon/irq.h> - -unsigned int -reschedule () -{ - leonbare_sched_update (); - return leonbare_sched (); -} - -unsigned int -leonbare_sched () -{ - unsigned int ret = 0; - volatile leonbare_thread_t old = LEONBARE_KR_CURRENT, new = - LEONBARE_KR_NEXT; - LBDEBUG_FNCALL; - LBDEBUG_HEADER_PRINTF (LBDEBUG_SCHED_NR, "switch %s[%x]->%s[%x]\n", - LEONBARE_TH_NAME_DBG (old), old, - LEONBARE_TH_NAME_DBG (new), new); - - LBPASSERT ((old != new), - "leonbare_sched should only be called with reschedule work to do", - 0); - - LEONBARE_KR_CURRENT = new; - - /* to be able to programm symetrically on kernel level each thread - saves it's spinlock on mutexes and kernel and irq flags in its - own save region. On a kernel switch they are released until the - thread is reawakened. Then the locks will be reaquired (and finally - released when the codeblock exits). The locking can be recursive. */ - if (old->th_prot.krp_k_depth) - { - LEONBARE_SMP_SPINLOCK_RELEASE (LEONBARE_KR_LOCK); - } - if (old->th_prot.krp_m_depth) - { - LEONBARE_SMP_SPINLOCK_RELEASE (old->th_prot.krp_m); - } - - ret = _leonbare_kernel_switchto (old, new); - optbarrier (); - - if (new->th_prot.krp_m_depth) - { - LEONBARE_SMP_SPINLOCK_AQUIRE (new->th_prot.krp_m); - } - if (old->th_prot.krp_k_depth) - { - LEONBARE_SMP_SPINLOCK_AQUIRE (LEONBARE_KR_LOCK); - } - - return ret; -} |