lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] uml: timer cleanups

Browse Source 
set_interval returns an error instead of panicing if setitimer fails.  Some of
its callers now check the return.

enable_timer is largely tt-mode-specific, so it is marked as such, and the
only skas-mode caller is made to call set-interval instead.

user_time_init was a no-value-added wrapper around set_interval, so it is
gone.

Since set_interval is now called from kernel code, callers no longer pass
ITIMER_* to it.  Instead, they pass a flag which is converted into ITIMER_REAL
or ITIMER_VIRTUAL.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2006-09-25 23:33:05 -07:00
committed by Linus Torvalds
parent 4b84c69b5f
commit 537ae946e8
4 changed files with 22 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/um/os-Linux/time.c
View File

@ -17,20 +17,25 @@
#include "kern_constants.h"
#include "os.h"
static void set_interval(int timer_type)
int set_interval(int is_virtual)
{
int usec = 1000000/hz();
int timer_type = is_virtual ? ITIMER_VIRTUAL : ITIMER_REAL;
struct itimerval interval = ((struct itimerval) { { 0, usec },
{ 0, usec } });
if(setitimer(timer_type, &interval, NULL) == -1)
panic("setitimer failed - errno = %d\n", errno);
return -errno;
return 0;
}
#ifdef CONFIG_MODE_TT
void enable_timer(void)
{
set_interval(ITIMER_VIRTUAL);
set_interval(1);
}
#endif
void disable_timer(void)
{
@ -74,7 +79,7 @@ void uml_idle_timer(void)
set_handler(SIGALRM, (__sighandler_t) alarm_handler,
SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
set_interval(ITIMER_REAL);
set_interval(0);
}
#endif
@ -94,8 +99,3 @@ void idle_sleep(int secs)
ts.tv_nsec = 0;
nanosleep(&ts, NULL);
}
void user_time_init(void)
{
set_interval(ITIMER_VIRTUAL);
}