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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 12:15:24 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 12:15:24 -0400
commita03fdb7612874834d6847107198712d18b5242c7 (patch)
tree9ae81170509fd8b1c23d1b7e8edfa7a2203ffce3 /arch/powerpc/kernel/time.c
parent202c4675c55ddf6b443c7e057d2dff6b42ef71aa (diff)
parent12e09337fe238981cb0c87543306e23775d1a143 (diff)
Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (34 commits) time: Prevent 32 bit overflow with set_normalized_timespec() clocksource: Delay clocksource down rating to late boot clocksource: clocksource_select must be called with mutex locked clocksource: Resolve cpu hotplug dead lock with TSC unstable, fix crash timers: Drop a function prototype clocksource: Resolve cpu hotplug dead lock with TSC unstable timer.c: Fix S/390 comments timekeeping: Fix invalid getboottime() value timekeeping: Fix up read_persistent_clock() breakage on sh timekeeping: Increase granularity of read_persistent_clock(), build fix time: Introduce CLOCK_REALTIME_COARSE x86: Do not unregister PIT clocksource on PIT oneshot setup/shutdown clocksource: Avoid clocksource watchdog circular locking dependency clocksource: Protect the watchdog rating changes with clocksource_mutex clocksource: Call clocksource_change_rating() outside of watchdog_lock timekeeping: Introduce read_boot_clock timekeeping: Increase granularity of read_persistent_clock() timekeeping: Update clocksource with stop_machine timekeeping: Add timekeeper read_clock helper functions timekeeping: Move NTP adjusted clock multiplier to struct timekeeper ... Fix trivial conflict due to MIPS lemote -> loongson renaming.
Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r--arch/powerpc/kernel/time.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index a180b4f9a4f6..465e498bcb33 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -774,11 +774,12 @@ int update_persistent_clock(struct timespec now)
774 return ppc_md.set_rtc_time(&tm); 774 return ppc_md.set_rtc_time(&tm);
775} 775}
776 776
777unsigned long read_persistent_clock(void) 777void read_persistent_clock(struct timespec *ts)
778{ 778{
779 struct rtc_time tm; 779 struct rtc_time tm;
780 static int first = 1; 780 static int first = 1;
781 781
782 ts->tv_nsec = 0;
782 /* XXX this is a litle fragile but will work okay in the short term */ 783 /* XXX this is a litle fragile but will work okay in the short term */
783 if (first) { 784 if (first) {
784 first = 0; 785 first = 0;
@@ -786,14 +787,18 @@ unsigned long read_persistent_clock(void)
786 timezone_offset = ppc_md.time_init(); 787 timezone_offset = ppc_md.time_init();
787 788
788 /* get_boot_time() isn't guaranteed to be safe to call late */ 789 /* get_boot_time() isn't guaranteed to be safe to call late */
789 if (ppc_md.get_boot_time) 790 if (ppc_md.get_boot_time) {
790 return ppc_md.get_boot_time() -timezone_offset; 791 ts->tv_sec = ppc_md.get_boot_time() - timezone_offset;
792 return;
793 }
794 }
795 if (!ppc_md.get_rtc_time) {
796 ts->tv_sec = 0;
797 return;
791 } 798 }
792 if (!ppc_md.get_rtc_time)
793 return 0;
794 ppc_md.get_rtc_time(&tm); 799 ppc_md.get_rtc_time(&tm);
795 return mktime(tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday, 800 ts->tv_sec = mktime(tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday,
796 tm.tm_hour, tm.tm_min, tm.tm_sec); 801 tm.tm_hour, tm.tm_min, tm.tm_sec);
797} 802}
798 803
799/* clocksource code */ 804/* clocksource code */