On 28/06/2013 03:29, Cody P Schafer wrote:
On 06/27/2013 05:25 PM, Cody P Schafer wrote:
On 06/24/2013 12:28 AM, Eliezer Tamir wrote:
select/poll busy-poll support.
...
I'm seeing warnings about using smp_processor_id() while preemptable
(log included below) due to this patch. I expect the us
On 28/06/2013 07:43, Andi Kleen wrote:
@@ -400,6 +402,8 @@ int do_select(int n, fd_set_bits *fds, struct timespec
*end_time)
poll_table *wait;
int retval, i, timed_out = 0;
unsigned long slack = 0;
+ unsigned int ll_flag = POLL_LL;
+ u64 ll_time = ll_end_time(
> @@ -400,6 +402,8 @@ int do_select(int n, fd_set_bits *fds, struct timespec
> *end_time)
> poll_table *wait;
> int retval, i, timed_out = 0;
> unsigned long slack = 0;
> + unsigned int ll_flag = POLL_LL;
> + u64 ll_time = ll_end_time();
So you're adding a sched_clock to
On 06/27/2013 05:25 PM, Cody P Schafer wrote:
On 06/24/2013 12:28 AM, Eliezer Tamir wrote:
select/poll busy-poll support.
...
I'm seeing warnings about using smp_processor_id() while preemptable
(log included below) due to this patch. I expect the use of
ll_end_time() -> sched_clock() here is
On 06/24/2013 12:28 AM, Eliezer Tamir wrote:
select/poll busy-poll support.
...
diff --git a/fs/select.c b/fs/select.c
index 8c1c96c..79b876e 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -400,6 +402,8 @@ int do_select(int n, fd_set_bits *fds, struct timespec
*end_time)
poll_table *wai
From: Eliezer Tamir
Date: Mon, 24 Jun 2013 10:28:03 +0300
> select/poll busy-poll support.
>
> Split sysctl value into two separate ones, one for read and one for poll.
> updated Documentation/sysctl/net.txt
>
> Add a new poll flag POLL_LL. When this flag is set, sock_poll will call
> sk_poll_l
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