Pavel Machek wrote:
On Tue 2008-03-18 10:31:28, Linus Torvalds wrote:
On Tue, 18 Mar 2008, Pavel Machek wrote:
On Tue 2008-03-18 14:06:42, Pavel Machek wrote:
Confirmed, suspend slowness is in 2.6.25-rc6, too. It takes 15 seconds
to suspend/resume, while 2.6.24 takes 9. Thinkpad x60.
IIRC 2.6.25-rc5 was "fast".
Can you bisect it? There's only 343 commits between -rc5 and -rc6, so it
should not take too long to check which commit it is. Even if it should
take 9 reboots to bisect it entirely, going just five or six will likely
narrow it down sufficiently that we can probably guess fairly well what
it's about.
Slowdown is fixed by this patch:
I think only this part is relevant here. But yes, I agree that the whole
patch should be reverted.
@@ -230,7 +227,6 @@ static int acpi_ec_wait(struct acpi_ec *
while (time_before(jiffies, delay)) {
if (acpi_ec_check_status(ec, event))
goto end;
- msleep(5);
}
}
pr_err(PREFIX "acpi_ec_wait timeout,"
Thanks,
Alex.
ACPI: EC: Revert storm handler patch
From: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
Patch have caused several new troubles, so just revert it for now.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
---
drivers/acpi/ec.c | 11 -----------
1 files changed, 0 insertions(+), 11 deletions(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e7e197e..7222a18 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -129,7 +129,6 @@ static struct acpi_ec {
struct mutex lock;
wait_queue_head_t wait;
struct list_head list;
- atomic_t irq_count;
u8 handlers_installed;
} *boot_ec, *first_ec;
@@ -182,8 +181,6 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{
int ret = 0;
- atomic_set(&ec->irq_count, 0);
-
if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
force_poll = 1;
@@ -230,7 +227,6 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
while (time_before(jiffies, delay)) {
if (acpi_ec_check_status(ec, event))
goto end;
- msleep(5);
}
}
pr_err(PREFIX "acpi_ec_wait timeout,"
@@ -533,13 +529,6 @@ static u32 acpi_ec_gpe_handler(void *data)
struct acpi_ec *ec = data;
pr_debug(PREFIX "~~~> interrupt\n");
- atomic_inc(&ec->irq_count);
- if (atomic_read(&ec->irq_count) > 5) {
- pr_err(PREFIX "GPE storm detected, disabling EC GPE\n");
- acpi_disable_gpe(NULL, ec->gpe, ACPI_ISR);
- clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
- return ACPI_INTERRUPT_HANDLED;
- }
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))
wake_up(&ec->wait);
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