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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 17:55:23 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 17:55:23 -0400
commiteb4225b2da2b9f3c1ee43efe58ed1415cc1d4c47 (patch)
tree573ce3591679ffcdc179801ed86107e48e0e11ca /arch/ia64/kernel/time.c
parent807677f812639bdeeddf86abc66117e124eaedb2 (diff)
parent4cddb886a4d0e5cc7a790151740bfb87b568c97d (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (25 commits) mmtimer: Push BKL down into the ioctl handler [IA64] Remove experimental status of kdump [IA64] Update ia64 mmr list for SGI uv [IA64] Avoid overflowing ia64_cpu_to_sapicid in acpi_map_lsapic() [IA64] adding parameter check to module_free() [IA64] improper printk format in acpi-cpufreq [IA64] pv_ops: move some functions in ivt.S to avoid lack of space. [IA64] pvops: documentation on ia64/pv_ops [IA64] pvops: add to hooks, pv_time_ops, for steal time accounting. [IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations. [IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic. [IA64] pvops: define initialization hooks, pv_init_ops, for paravirtualized environment. [IA64] pvops: paravirtualize NR_IRQS [IA64] pvops: paravirtualize entry.S [IA64] pvops: paravirtualize ivt.S [IA64] pvops: paravirtualize minstate.h. [IA64] pvops: define paravirtualized instructions for native. [IA64] pvops: preparation for paravirtulization of hand written assembly code. [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions. [IA64] pvops: add an early setup hook for pv_ops. ...
Diffstat (limited to 'arch/ia64/kernel/time.c')
-rw-r--r--arch/ia64/kernel/time.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index aad1b7b1fff9..65c10a42c88f 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -24,6 +24,7 @@
24#include <asm/machvec.h> 24#include <asm/machvec.h>
25#include <asm/delay.h> 25#include <asm/delay.h>
26#include <asm/hw_irq.h> 26#include <asm/hw_irq.h>
27#include <asm/paravirt.h>
27#include <asm/ptrace.h> 28#include <asm/ptrace.h>
28#include <asm/sal.h> 29#include <asm/sal.h>
29#include <asm/sections.h> 30#include <asm/sections.h>
@@ -48,6 +49,15 @@ EXPORT_SYMBOL(last_cli_ip);
48 49
49#endif 50#endif
50 51
52#ifdef CONFIG_PARAVIRT
53static void
54paravirt_clocksource_resume(void)
55{
56 if (pv_time_ops.clocksource_resume)
57 pv_time_ops.clocksource_resume();
58}
59#endif
60
51static struct clocksource clocksource_itc = { 61static struct clocksource clocksource_itc = {
52 .name = "itc", 62 .name = "itc",
53 .rating = 350, 63 .rating = 350,
@@ -56,6 +66,9 @@ static struct clocksource clocksource_itc = {
56 .mult = 0, /*to be calculated*/ 66 .mult = 0, /*to be calculated*/
57 .shift = 16, 67 .shift = 16,
58 .flags = CLOCK_SOURCE_IS_CONTINUOUS, 68 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
69#ifdef CONFIG_PARAVIRT
70 .resume = paravirt_clocksource_resume,
71#endif
59}; 72};
60static struct clocksource *itc_clocksource; 73static struct clocksource *itc_clocksource;
61 74
@@ -157,6 +170,9 @@ timer_interrupt (int irq, void *dev_id)
157 170
158 profile_tick(CPU_PROFILING); 171 profile_tick(CPU_PROFILING);
159 172
173 if (paravirt_do_steal_accounting(&new_itm))
174 goto skip_process_time_accounting;
175
160 while (1) { 176 while (1) {
161 update_process_times(user_mode(get_irq_regs())); 177 update_process_times(user_mode(get_irq_regs()));
162 178
@@ -186,6 +202,8 @@ timer_interrupt (int irq, void *dev_id)
186 local_irq_disable(); 202 local_irq_disable();
187 } 203 }
188 204
205skip_process_time_accounting:
206
189 do { 207 do {
190 /* 208 /*
191 * If we're too close to the next clock tick for 209 * If we're too close to the next clock tick for
@@ -335,6 +353,11 @@ ia64_init_itm (void)
335 */ 353 */
336 clocksource_itc.rating = 50; 354 clocksource_itc.rating = 50;
337 355
356 paravirt_init_missing_ticks_accounting(smp_processor_id());
357
358 /* avoid softlock up message when cpu is unplug and plugged again. */
359 touch_softlockup_watchdog();
360
338 /* Setup the CPU local timer tick */ 361 /* Setup the CPU local timer tick */
339 ia64_cpu_local_tick(); 362 ia64_cpu_local_tick();
340 363