test/event: fix timeout accuracy
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Commit Message
From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Round timeout ticks when converting from nanoseconds, this prevents
loss of accuracy and deviation from requested timeout value.
Fixes: d1f3385d0076 ("test: add event timer adapter auto-test")
Cc: stable@dpdk.org
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
app/test/test_event_timer_adapter.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Comments
> -----Original Message-----
> From: pbhagavatula@marvell.com <pbhagavatula@marvell.com>
> Sent: Saturday, March 6, 2021 2:27 PM
> To: jerinj@marvell.com; Carrillo, Erik G <erik.g.carrillo@intel.com>
> Cc: dev@dpdk.org; Pavan Nikhilesh <pbhagavatula@marvell.com>;
> stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] test/event: fix timeout accuracy
>
> From: Pavan Nikhilesh <pbhagavatula@marvell.com>
>
> Round timeout ticks when converting from nanoseconds, this prevents loss
> of accuracy and deviation from requested timeout value.
>
> Fixes: d1f3385d0076 ("test: add event timer adapter auto-test")
> Cc: stable@dpdk.org
>
> Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Thanks, Pavan:
Acked-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
On Mon, Mar 8, 2021 at 10:50 PM Carrillo, Erik G
<erik.g.carrillo@intel.com> wrote:
>
> > -----Original Message-----
> > From: pbhagavatula@marvell.com <pbhagavatula@marvell.com>
> > Sent: Saturday, March 6, 2021 2:27 PM
> > To: jerinj@marvell.com; Carrillo, Erik G <erik.g.carrillo@intel.com>
> > Cc: dev@dpdk.org; Pavan Nikhilesh <pbhagavatula@marvell.com>;
> > stable@dpdk.org
> > Subject: [dpdk-dev] [PATCH] test/event: fix timeout accuracy
> >
> > From: Pavan Nikhilesh <pbhagavatula@marvell.com>
> >
> > Round timeout ticks when converting from nanoseconds, this prevents loss
> > of accuracy and deviation from requested timeout value.
> >
> > Fixes: d1f3385d0076 ("test: add event timer adapter auto-test")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
>
> Thanks, Pavan:
>
> Acked-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
Applied to dpdk-next-net-eventdev/for-main. Thanks
>> -----Original Message-----
>> From: pbhagavatula@marvell.com <pbhagavatula@marvell.com>
>> Sent: Saturday, March 6, 2021 2:27 PM
>> To: jerinj@marvell.com; Carrillo, Erik G <erik.g.carrillo@intel.com>
>> Cc: dev@dpdk.org; Pavan Nikhilesh <pbhagavatula@marvell.com>;
>> stable@dpdk.org
>> Subject: [dpdk-dev] [PATCH] test/event: fix timeout accuracy
>>
>> From: Pavan Nikhilesh <pbhagavatula@marvell.com>
>>
>> Round timeout ticks when converting from nanoseconds, this
>prevents loss
>> of accuracy and deviation from requested timeout value.
>>
>> Fixes: d1f3385d0076 ("test: add event timer adapter auto-test")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
>
>Thanks, Pavan:
>
>Acked-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
Thanks, Gabriel,
Could you take a look at [1] too? It fixes a similar problem
[1]http://patches.dpdk.org/project/dpdk/patch/20210225120144.2591-1-pbhagavatula@marvell.com/
@@ -3,6 +3,8 @@
* Copyright(c) 2017-2018 Intel Corporation.
*/
+#include <math.h>
+
#include <rte_atomic.h>
#include <rte_common.h>
#include <rte_cycles.h>
@@ -46,7 +48,7 @@ static uint64_t global_info_bkt_tck_ns;
static volatile uint8_t arm_done;
#define CALC_TICKS(tks) \
- ((tks * global_bkt_tck_ns) / global_info_bkt_tck_ns)
+ ceil((double)(tks * global_bkt_tck_ns) / global_info_bkt_tck_ns)
static bool using_services;