The patch titled
oprofile: ppro: need to enable/disable all the counters
has been added to the -mm tree. Its filename is
oprofile-ppro-need-to-enable-disable-all-the-counters.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: oprofile: ppro: need to enable/disable all the counters
From: Arun Sharma <arun.sharma@xxxxxxxxxx>
Need to enable/disable all the counters instead of just counter 0.
This affects all cpus with family=6, including i386/core. Usual symptom:
only counter 0 provides samples. Other counters don't produce samples.
Signed-off-by: Arun Sharma <arun.sharma@xxxxxxxxxx>
Cc: Philippe Elie <phil.el@xxxxxxxxxx>
Cc: John Levon <levon@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
diff -puN arch/i386/oprofile/op_model_ppro.c~oprofile-ppro-need-to-enable-disable-all-the-counters arch/i386/oprofile/op_model_ppro.c
--- a/arch/i386/oprofile/op_model_ppro.c~oprofile-ppro-need-to-enable-disable-all-the-counters
+++ a/arch/i386/oprofile/op_model_ppro.c
@@ -138,11 +138,14 @@ static int ppro_check_ctrs(struct pt_reg
static void ppro_start(struct op_msrs const * const msrs)
{
unsigned int low,high;
+ int i;
- if (reset_value[0]) {
- CTRL_READ(low, high, msrs, 0);
- CTRL_SET_ACTIVE(low);
- CTRL_WRITE(low, high, msrs, 0);
+ for (i = 0; i < NUM_COUNTERS; ++i) {
+ if (reset_value[i]) {
+ CTRL_READ(low, high, msrs, i);
+ CTRL_SET_ACTIVE(low);
+ CTRL_WRITE(low, high, msrs, i);
+ }
}
}
@@ -150,11 +153,14 @@ static void ppro_start(struct op_msrs co
static void ppro_stop(struct op_msrs const * const msrs)
{
unsigned int low,high;
+ int i;
- if (reset_value[0]) {
- CTRL_READ(low, high, msrs, 0);
+ for (i = 0; i < NUM_COUNTERS; ++i) {
+ if (!reset_value[i])
+ continue;
+ CTRL_READ(low, high, msrs, i);
CTRL_SET_INACTIVE(low);
- CTRL_WRITE(low, high, msrs, 0);
+ CTRL_WRITE(low, high, msrs, i);
}
}
_
Patches currently in -mm which might be from arun.sharma@xxxxxxxxxx are
oprofile-ppro-need-to-enable-disable-all-the-counters.patch
-
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