android_kernel_xiaomi_sm8350/arch/um/kernel/reboot.c
Jeff Dike 026549d284 [PATCH] uml: always disable kmalloc during shutdown
kmalloc wasn't being disabled during panic.  This patch ensures that, no
matter how UML is exiting, it is disabled.  This matters because part of the
cleanup is to remove the umid file, which involves readdir, which calls
malloc.  This must map to libc malloc, rather than kmalloc or vmalloc.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:24:35 -07:00

79 lines
1.5 KiB
C

/*
* Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/module.h"
#include "linux/sched.h"
#include "user_util.h"
#include "kern_util.h"
#include "kern.h"
#include "os.h"
#include "mode.h"
#include "choose-mode.h"
#ifdef CONFIG_SMP
static void kill_idlers(int me)
{
#ifdef CONFIG_MODE_TT
struct task_struct *p;
int i;
for(i = 0; i < sizeof(idle_threads)/sizeof(idle_threads[0]); i++){
p = idle_threads[i];
if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
os_kill_process(p->thread.mode.tt.extern_pid, 0);
}
#endif
}
#endif
static void kill_off_processes(void)
{
CHOOSE_MODE(kill_off_processes_tt(), kill_off_processes_skas());
#ifdef CONFIG_SMP
kill_idlers(os_getpid());
#endif
}
void uml_cleanup(void)
{
kmalloc_ok = 0;
do_uml_exitcalls();
kill_off_processes();
}
void machine_restart(char * __unused)
{
uml_cleanup();
CHOOSE_MODE(reboot_tt(), reboot_skas());
}
EXPORT_SYMBOL(machine_restart);
void machine_power_off(void)
{
uml_cleanup();
CHOOSE_MODE(halt_tt(), halt_skas());
}
EXPORT_SYMBOL(machine_power_off);
void machine_halt(void)
{
machine_power_off();
}
EXPORT_SYMBOL(machine_halt);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/