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[PATCH] oprofile: ppro: need to enable/disable all the counters 

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@google.com>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: John Levon <levon@movementarian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Arun Sharma 2006-09-29 02:00:01 -07:00 committed by Linus Torvalds
parent 50462062a0
commit 6b77df08a3
1 changed files with 13 additions and 7 deletions
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20
arch/i386/oprofile/op_model_ppro.c
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@ -138,11 +138,14 @@ static int ppro_check_ctrs(struct pt_regs * const regs,
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 const * const msrs)
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);
}
}