diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-24 08:48:17 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-24 08:48:17 -0700 |
commit | ef54b1bb2e4de212a89a2692a7b2efd70b5fb559 (patch) | |
tree | 41f8a3f0b6bc234efb5151d7b6852babe7fe75a6 /drivers/acpi/processor_idle.c | |
parent | 9fe9293d14e8418f29136216f0180f47270a916a (diff) | |
parent | 1162cf6bc6c4650943735438e2be0785ea40a3c6 (diff) |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (34 commits)
ACPI, i915: Register ACPI video even when not modesetting
Revert "ACPICA: delete check for AML access to port 0x81-83"
I/O port protection: update for windows compatibility.
sony-laptop: always try to unblock rfkill on load
sony-laptop: fix bogus error message display on resume
ACPI: EC: Fix ACPI EC resume non-query interrupt message
sony-laptop: SNC input event 38 fix
sony-laptop: SNC 127 Initialization Fix
sony-laptop: Duplicate SNC 127 Event Fix
ACPI: prevent processor.max_cstate=0 boot crash
ACPI/hpet: prevent boot hang when hpet=force used on ICH-4M
ACPI: delete obsolete "bus master activity" proc field
ACPI: idle: mark_tsc_unstable() at init-time, not run-time
ACPI: add /sys/firmware/acpi/interrupts/sci_not counter
ACPI video: fix an error when the brightness levels on AC and on Battery are same
acpi-cpufreq: Do not let get_measured perf depend on internal variable
acpi-cpufreq: style-only: add parens to math expression
acpi-cpufreq: Cleanup: Use printk_once
x86, acpi_cpufreq: Fix the NULL pointer dereference in get_measured_perf
thinkpad-acpi: bump up version to 0.23
...
Diffstat (limited to 'drivers/acpi/processor_idle.c')
-rw-r--r-- | drivers/acpi/processor_idle.c | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 6fe121434ff..f7ca8c55956 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -581,6 +581,11 @@ static int acpi_processor_power_verify(struct acpi_processor *pr) for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) { struct acpi_processor_cx *cx = &pr->power.states[i]; +#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86) + /* TSC could halt in idle, so notify users */ + if (tsc_halts_in_c(cx->type)) + mark_tsc_unstable("TSC halts in idle");; +#endif switch (cx->type) { case ACPI_STATE_C1: cx->valid = 1; @@ -657,11 +662,9 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset) seq_printf(seq, "active state: C%zd\n" "max_cstate: C%d\n" - "bus master activity: %08x\n" "maximum allowed latency: %d usec\n", pr->power.state ? pr->power.state - pr->power.states : 0, - max_cstate, (unsigned)pr->power.bm_activity, - pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)); + max_cstate, pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)); seq_puts(seq, "states:\n"); @@ -871,11 +874,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, kt2 = ktime_get_real(); idle_time = ktime_to_us(ktime_sub(kt2, kt1)); -#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86) - /* TSC could halt in idle, so notify users */ - if (tsc_halts_in_c(cx->type)) - mark_tsc_unstable("TSC halts in idle");; -#endif sleep_ticks = us_to_pm_timer_ticks(idle_time); /* Tell the scheduler how much we idled: */ @@ -955,6 +953,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, */ acpi_state_timer_broadcast(pr, cx, 1); + kt1 = ktime_get_real(); /* * disable bus master * bm_check implies we need ARB_DIS @@ -976,10 +975,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, ACPI_FLUSH_CPU_CACHE(); } - kt1 = ktime_get_real(); acpi_idle_do_entry(cx); - kt2 = ktime_get_real(); - idle_time = ktime_to_us(ktime_sub(kt2, kt1)); /* Re-enable bus master arbitration */ if (pr->flags.bm_check && pr->flags.bm_control) { @@ -988,12 +984,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, c3_cpu_count--; spin_unlock(&c3_lock); } + kt2 = ktime_get_real(); + idle_time = ktime_to_us(ktime_sub(kt2, kt1)); -#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86) - /* TSC could halt in idle, so notify users */ - if (tsc_halts_in_c(ACPI_STATE_C3)) - mark_tsc_unstable("TSC halts in idle"); -#endif sleep_ticks = us_to_pm_timer_ticks(idle_time); /* Tell the scheduler how much we idled: */ sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS); @@ -1037,6 +1030,9 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr) dev->states[i].desc[0] = '\0'; } + if (max_cstate == 0) + max_cstate = 1; + for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) { cx = &pr->power.states[i]; state = &dev->states[count]; |