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authorGennady Sharapov <Gennady.V.Sharapov@intel.com>2006-01-18 17:42:42 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-18 19:20:19 -0800
commitcff65c4f0ea6662124bbb7bf3806e5df1c6d735d (patch)
tree5f19b3facdfa6a50ad1668b28d1ff74a92a90271 /arch/um/os-Linux
parent4fef0c10fa174b57a10854b8b4b2b90d155706e0 (diff)
[PATCH] uml: move libc-dependent time code
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from time.c file under os-Linux dir and joins time.c and tine_kernel.c files Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/os-Linux')
-rw-r--r--arch/um/os-Linux/main.c1
-rw-r--r--arch/um/os-Linux/signal.c2
-rw-r--r--arch/um/os-Linux/start_up.c1
-rw-r--r--arch/um/os-Linux/time.c131
-rw-r--r--arch/um/os-Linux/tt.c1
5 files changed, 120 insertions, 16 deletions
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index 172c8474453..98becd18f21 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -16,7 +16,6 @@
#include "user_util.h"
#include "kern_util.h"
#include "mem_user.h"
-#include "time_user.h"
#include "irq_user.h"
#include "user.h"
#include "init.h"
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index c1f46a0fef1..da474a797fb 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -18,8 +18,8 @@
#include "sysdep/sigcontext.h"
#include "sysdep/signal.h"
#include "sigcontext.h"
-#include "time_user.h"
#include "mode.h"
+#include "os.h"
void sig_handler(ARCH_SIGHDLR_PARAM)
{
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index b47e5e71d1a..6c5b17ed59e 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -29,7 +29,6 @@
#include "irq_user.h"
#include "ptrace_user.h"
#include "mem_user.h"
-#include "time_user.h"
#include "init.h"
#include "os.h"
#include "uml-config.h"
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index cf30a39bc48..6f7626775ac 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -1,21 +1,128 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
#include <sys/time.h>
+#include <signal.h>
+#include <errno.h>
+#include "user_util.h"
+#include "kern_util.h"
+#include "user.h"
+#include "process.h"
+#include "kern_constants.h"
+#include "os.h"
+
+/* XXX This really needs to be declared and initialized in a kernel file since
+ * it's in <linux/time.h>
+ */
+extern struct timespec wall_to_monotonic;
+
+static void set_interval(int timer_type)
+{
+ int usec = 1000000/hz();
+ struct itimerval interval = ((struct itimerval) { { 0, usec },
+ { 0, usec } });
+
+ if(setitimer(timer_type, &interval, NULL) == -1)
+ panic("setitimer failed - errno = %d\n", errno);
+}
+
+void enable_timer(void)
+{
+ set_interval(ITIMER_VIRTUAL);
+}
+
+void disable_timer(void)
+{
+ struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
+ if((setitimer(ITIMER_VIRTUAL, &disable, NULL) < 0) ||
+ (setitimer(ITIMER_REAL, &disable, NULL) < 0))
+ printk("disnable_timer - setitimer failed, errno = %d\n",
+ errno);
+ /* If there are signals already queued, after unblocking ignore them */
+ set_handler(SIGALRM, SIG_IGN, 0, -1);
+ set_handler(SIGVTALRM, SIG_IGN, 0, -1);
+}
+
+void switch_timers(int to_real)
+{
+ struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
+ struct itimerval enable = ((struct itimerval) { { 0, 1000000/hz() },
+ { 0, 1000000/hz() }});
+ int old, new;
+
+ if(to_real){
+ old = ITIMER_VIRTUAL;
+ new = ITIMER_REAL;
+ }
+ else {
+ old = ITIMER_REAL;
+ new = ITIMER_VIRTUAL;
+ }
+
+ if((setitimer(old, &disable, NULL) < 0) ||
+ (setitimer(new, &enable, NULL)))
+ printk("switch_timers - setitimer failed, errno = %d\n",
+ errno);
+}
-unsigned long long os_usecs(void)
+void uml_idle_timer(void)
+{
+ if(signal(SIGVTALRM, SIG_IGN) == SIG_ERR)
+ panic("Couldn't unset SIGVTALRM handler");
+
+ set_handler(SIGALRM, (__sighandler_t) alarm_handler,
+ SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+ set_interval(ITIMER_REAL);
+}
+
+extern void ktime_get_ts(struct timespec *ts);
+#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
+
+void time_init(void)
+{
+ struct timespec now;
+
+ if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR)
+ panic("Couldn't set SIGVTALRM handler");
+ set_interval(ITIMER_VIRTUAL);
+
+ do_posix_clock_monotonic_gettime(&now);
+ wall_to_monotonic.tv_sec = -now.tv_sec;
+ wall_to_monotonic.tv_nsec = -now.tv_nsec;
+}
+
+unsigned long long os_nsecs(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
- return((unsigned long long) tv.tv_sec * 1000000 + tv.tv_usec);
+ return((unsigned long long) tv.tv_sec * BILLION + tv.tv_usec * 1000);
}
-/*
- * 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:
- */
+void idle_sleep(int secs)
+{
+ struct timespec ts;
+
+ ts.tv_sec = secs;
+ ts.tv_nsec = 0;
+ nanosleep(&ts, NULL);
+}
+
+/* XXX This partly duplicates init_irq_signals */
+
+void user_time_init(void)
+{
+ set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
+ SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
+ SIGALRM, SIGUSR2, -1);
+ set_handler(SIGALRM, (__sighandler_t) alarm_handler,
+ SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
+ SIGVTALRM, SIGUSR2, -1);
+ set_interval(ITIMER_VIRTUAL);
+}
diff --git a/arch/um/os-Linux/tt.c b/arch/um/os-Linux/tt.c
index 404bb63a74a..919d19f1153 100644
--- a/arch/um/os-Linux/tt.c
+++ b/arch/um/os-Linux/tt.c
@@ -27,7 +27,6 @@
#include "sysdep/sigcontext.h"
#include "irq_user.h"
#include "ptrace_user.h"
-#include "time_user.h"
#include "init.h"
#include "os.h"
#include "uml-config.h"