ACPI: delete obsolete "bus master activity" proc field

Linux-2.6.29 deleted the legacy ACPI idle handler, leaving
the CPU_IDLE handler, which does not track bus master activity.

So delete the unused bm_activity field -- it is confusing to
print an always zero value.

This patch could break programs that parse
/proc/acpi/processor/*/power, since it deletes this
line from that file:

bus master activity:     00000000

http://bugzilla.kernel.org/show_bug.cgi?id=13145
is not fixed by this patch, but provoked this patch.

Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 9d1f01e..eed3b45 100644 (file)
--- 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 (file)
--- 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;