.34 patches

diff --git a/queue-2.6.34/series b/queue-2.6.34/series
index cf81eb43e89be2b5e4a0a0260c36f8346a6b6640..5c771bfdeae7599f10199f4b21c80d1e43853db3 100644 (file)
--- a/queue-2.6.34/series
+++ b/queue-2.6.34/series
@@ -87,3 +87,4 @@ usb-io_ti-check-firmware-version-before-updating.patch
 usb-xhci-remove-buggy-assignment-in-next_trb.patch
 usb-ftdi_sio-add-id-for-ionics-plugcomputer.patch
 usb-ftdi_sio-add-product-id-for-lenz-li-usb.patch
+tracing-fix-timer-tracing.patch

diff --git a/queue-2.6.34/tracing-fix-timer-tracing.patch b/queue-2.6.34/tracing-fix-timer-tracing.patch
new file mode 100644 (file)
index 0000000..518dc91
--- /dev/null
+++ b/queue-2.6.34/tracing-fix-timer-tracing.patch
@@ -0,0 +1,75 @@
+From ede1b4290781ae82ccf0f2ecc6dada8d3dd35779 Mon Sep 17 00:00:00 2001
+From: Arjan van de Ven <arjan@linux.intel.com>
+Date: Wed, 18 Aug 2010 15:33:13 -0700
+Subject: tracing: Fix timer tracing
+
+From: Arjan van de Ven <arjan@linux.intel.com>
+
+commit ede1b4290781ae82ccf0f2ecc6dada8d3dd35779 upstream.
+
+PowerTOP would like to be able to trace timers.
+
+Unfortunately, the current timer tracing is not very useful: the
+actual timer function is not recorded in the trace at the start
+of timer execution.
+
+Although this is recorded for timer "start" time (when it gets
+armed), this is not useful; most timers get started early, and a
+tracer like PowerTOP will never see this event, but will only
+see the actual running of the  timer.
+
+This patch just adds the function to the timer tracing; I've
+verified with PowerTOP that now it can get useful information
+about timers.
+
+Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
+Cc: xiaoguangrong@cn.fujitsu.com
+Cc: Steven Rostedt <rostedt@goodmis.org>
+Cc: Frederic Weisbecker <fweisbec@gmail.com>
+Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
+LKML-Reference: <4C6C5FA9.3000405@linux.intel.com>
+Signed-off-by: Ingo Molnar <mingo@elte.hu>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ include/trace/events/timer.h |    8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+--- a/include/trace/events/timer.h
++++ b/include/trace/events/timer.h
+@@ -74,14 +74,16 @@ TRACE_EVENT(timer_expire_entry,
+       TP_STRUCT__entry(
+               __field( void *,        timer   )
+               __field( unsigned long, now     )
++              __field( void *,        function)
+       ),
+ 
+       TP_fast_assign(
+               __entry->timer          = timer;
+               __entry->now            = jiffies;
++              __entry->function       = timer->function;
+       ),
+ 
+-      TP_printk("timer=%p now=%lu", __entry->timer, __entry->now)
++      TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now)
+ );
+ 
+ /**
+@@ -213,14 +215,16 @@ TRACE_EVENT(hrtimer_expire_entry,
+       TP_STRUCT__entry(
+               __field( void *,        hrtimer )
+               __field( s64,           now     )
++              __field( void *,        function)
+       ),
+ 
+       TP_fast_assign(
+               __entry->hrtimer        = hrtimer;
+               __entry->now            = now->tv64;
++              __entry->function       = hrtimer->function;
+       ),
+ 
+-      TP_printk("hrtimer=%p now=%llu", __entry->hrtimer,
++      TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function,
+                 (unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now }))
+  );
+