From: Len Brown <len.brown@xxxxxxxxx>
The legacy ACPI idle handler was deleted from 2.6.29
leaving the CPU_IDLE idle handler, which never sets bm_activity.
So delete this unused field -- it is mis-leading to have it print
all zeros when, in fact, there may bus master activity
occurring -- just that we don't track its history any more.
This patch could break something that parses
/proc/acpi/processor/*/power, since it deletes this
line from that file:
bus master activity: 00000000
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/processor_idle.c | 4 +---
include/acpi/processor.h | 1 -
2 files changed, 1 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 9d1f01e..eed3b45 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -662,11 +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");
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index b09c4fd..4927c06 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -84,7 +84,6 @@ struct acpi_processor_power {
struct acpi_processor_cx *state;
unsigned long bm_check_timestamp;
u32 default_state;
- u32 bm_activity;
int count;
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
int timer_broadcast_on_state;
--
1.6.3.rc1.34.g0be9b
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