Re: JFFS2
On Thu, Jul 12, 2018, 5:51 PM Russell Haley wrote: > While this is maybe not a currently viable alternative, it's most likely > port-able (meaning could be ported) to work with libbsd? > > https://en.wikipedia.org/wiki/CHFS > > For what it's worth > It's worth something. :) It came up before and I added a ticket so it shows up as a potential project. It seems to be a good alternative. > > Russ > > On Thu, Jul 12, 2018 at 1:27 PM, Sebastian Huber < > sebastian.hu...@embedded-brains.de> wrote: > >> Hello, >> >> for NAND flashes you can use YAFFS2: >> >> https://git.rtems.org/sebh/rtems-yaffs2.git/ >> >> You need a license for commercial products: >> >> https://yaffs.net/yaffs-licence-faqs >> ___ >> users mailing list >> users@rtems.org >> http://lists.rtems.org/mailman/listinfo/users >> > > ___ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: JFFS2
While this is maybe not a currently viable alternative, it's most likely port-able (meaning could be ported) to work with libbsd? https://en.wikipedia.org/wiki/CHFS For what it's worth, Russ On Thu, Jul 12, 2018 at 1:27 PM, Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote: > Hello, > > for NAND flashes you can use YAFFS2: > > https://git.rtems.org/sebh/rtems-yaffs2.git/ > > You need a license for commercial products: > > https://yaffs.net/yaffs-licence-faqs > ___ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users > ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: JFFS2
Hello, for NAND flashes you can use YAFFS2: https://git.rtems.org/sebh/rtems-yaffs2.git/ You need a license for commercial products: https://yaffs.net/yaffs-licence-faqs ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
JFFS2
Does JFFS2 provide bad block management and wear leveling? If so, is there anything we need to do to enable it? Sent from my iPhone ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: CPU utilization
I like this idea. I signed up for the mailing list. I'll try to submit something in the next few days. Thanks. On Thu, Jul 12, 2018 at 12:56 PM, Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote: > - Am 12. Jul 2018 um 19:48 schrieb Mathew Benson > mathew.ben...@gmail.com: > > > I assume symbols prefixed with "_" are to be considered part of the > private > > API. What are the guidelines and legalities, if any, of bringing in > these > > private symbols into our own code? > > Functions, variables, and so on starting with an underscore "_" should > never be used by application code. If a certain functionality is not > provided by a public API in RTEMS, then a public API for this functionality > should be proposed to de...@rtems.org (or via a ticket). It should be > documented and tested. > ___ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users > -- *Mathew Benson* CEO | Chief Engineer Windhover Labs, LLC 832-640-4018 www.windhoverlabs.com ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: CPU utilization
- Am 12. Jul 2018 um 19:48 schrieb Mathew Benson mathew.ben...@gmail.com: > I assume symbols prefixed with "_" are to be considered part of the private > API. What are the guidelines and legalities, if any, of bringing in these > private symbols into our own code? Functions, variables, and so on starting with an underscore "_" should never be used by application code. If a certain functionality is not provided by a public API in RTEMS, then a public API for this functionality should be proposed to de...@rtems.org (or via a ticket). It should be documented and tested. ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: CPU utilization
I assume symbols prefixed with "_" are to be considered part of the private
API. What are the guidelines and legalities, if any, of bringing in these
private symbols into our own code?
On Thu, Jul 12, 2018 at 11:10 AM, Fabrício de Novaes Kucinskis <
fabricio.kucins...@inpe.br> wrote:
> Hi Mathew and Joel,
>
>
>
> On the past, I’ve used the following code to get individual task usage and
> monitor tasks behavior through time. It’s completely based on
> rtems_cpu_usage_report_with_plugin and I know it’s not the best way to do
> it, but worked for me 😊.
>
>
>
> Regards,
>
>
>
> Fabrício.
>
>
>
> /**
>
> * Returns the task usage in us. If the taskId is zero, returns the time
> since boot.
>
> * Code based on ‘rtems_cpu_usage_report_with_plugin’.
>
> **/
>
> uint64_t *TasksStatusList::GetCpuUsagePerTask*(*const* rtems_id &taskId)
>
> {
>
> *if* (taskId == 0)
>
> {
>
>*struct* timespec uptime;
>
>*struct* timespec total;
>
>
>
>*rtems_clock_get_uptime*(&uptime);
>
>
> *_Timespec_Subtract*(&CPU_usage_Uptime_at_last_reset,
> &uptime, &total);
>
>
>
>uint64_t totalCpuUsageInUs = (total.tv_sec
> * *static_cast*(100)) + (total.tv_nsec / *static_cast*<
> uint64_t>(1000));
>
>
>
>*return* totalCpuUsageInUs;
>
> }
>
> *else*
>
> {
>
>Objects_Information *ptObjInformation =
> NULL;
>
>Thread_Control
> *ptThread = NULL;
>
>Thread_CPU_usage_t timeRan;
>
>
>
>*for* (uint32_t i = 1; i <=
> OBJECTS_APIS_LAST; i++)
>
>{
>
>*if*
> (!_Objects_Information_table[i])
>
>{
>
>*continue*;
> // that’s ugly, but it works
>
>}
>
>
>
>ptObjInformation =
> _Objects_Information_table[i][1];
>
>
>
>*if* (ptObjInformation !=
> NULL)
>
>{
>
>*for* (
> uint32_t j = 1; j <= ptObjInformation->maximum; j++)
>
>{
>
>
> ptThread = *reinterpret_cast*(ptObjInformation->local_
> table[j]);
>
>
>
>
> *if* (ptThread == NULL)
>
>
> {
>
>
> *continue*; // still
> ugly, still works
>
>
> }
>
>
>
>
> // if the caller task asks for its own cpu usage, the time since the last
> context switch will not be computed
>
>
> *if* (ptThread->Object.id == taskId)
>
>
> {
>
>
> timeRan = ptThread->cpu_time_used;
>
>
>
>
> uint64_t cpuUsageInUs =
> (_Timestamp_Get_seconds(&timeRan) * *static_cast*(100)) +
> (_Timestamp_Get_nanoseconds(&timeRan) / *static_cast*(1000));
>
>
>
>
> *return* cpuUsageInUs;
>
>
> }
>
>}
>
>}
>
>}
>
>
>
>// if the rtemsId doesn’t exist...
>
>*return* 0;
>
> }
>
> }
>
>
>
> *De:* users [mailto:users-boun...@rtems.org] *Em nome de *Joel Sherrill
> *Enviada em:* quinta-feira, 12 de julho de 2018 11:37
> *Para:* Mathew Benson
> *Cc:* RTEMS
> *Assunto:* Re: CPU utilization
>
>
>
>
>
>
>
> On Tue, Jul 10, 2018 at 2:30 PM, Mathew Benson
> wrote:
>
> What would be the recommend way to read CPU utilization? Am I correct in
> saying, the best way would be to call rtems_cpu_usage_report_with_plugin()?
> Its ill advised to access the private symbols utilized by the
> rtems_cpu_usage_report_with_plugin() call directly, right? Is there
> another function that I can call to return a structure rather than parsing
> it with the rtems_printer plugin? I haven't dug into the rtems_printer
> object yet, but I'm assuming I could use it and parse a string sent to it.
>
>
>
>
>
> Yes. You could use the printer_object passed in to parse it.
>
>
>
> There isn't a call to get this information (yet) and similarly, there
> isn't an
>
> API to get the stack usage.
>
>
>
> Proposals and code welcomed. :)
>
>
>
> --joel
>
>
>
>
> --
>
> *Mathew Benson*
>
> CEO | Chief Engineer
>
> Windhover Labs, LLC
> 832-640-4018
>
> [image:
> https://drive.google.com/a/windhoverlabs.com/uc?id=1cLDczWESrU667xKgEJlFhHa2yjq5UVhJ&export=download]
>
> www.windhoverlabs.com
>
>
> _
RES: CPU utilization
Hi Mathew and Joel,
On the past, I’ve used the following code to get individual task usage and
monitor tasks behavior through time. It’s completely based on
rtems_cpu_usage_report_with_plugin and I know it’s not the best way to do it,
but worked for me 😊.
Regards,
Fabrício.
/**
* Returns the task usage in us. If the taskId is zero, returns the time since
boot.
* Code based on ‘rtems_cpu_usage_report_with_plugin’.
**/
uint64_t TasksStatusList::GetCpuUsagePerTask(const rtems_id &taskId)
{
if (taskId == 0)
{
struct timespec uptime;
struct timespec total;
rtems_clock_get_uptime(&uptime);
_Timespec_Subtract(&CPU_usage_Uptime_at_last_reset, &uptime, &total);
uint64_t totalCpuUsageInUs = (total.tv_sec *
static_cast(100)) + (total.tv_nsec / static_cast(1000));
return totalCpuUsageInUs;
}
else
{
Objects_Information *ptObjInformation = NULL;
Thread_Control*ptThread
= NULL;
Thread_CPU_usage_t timeRan;
for (uint32_t i = 1; i <= OBJECTS_APIS_LAST; i++)
{
if
(!_Objects_Information_table[i])
{
continue; //
that’s ugly, but it works
}
ptObjInformation =
_Objects_Information_table[i][1];
if (ptObjInformation != NULL)
{
for (uint32_t j
= 1; j <= ptObjInformation->maximum; j++)
{
ptThread = reinterpret_cast(ptObjInformation->local_table[j]);
if (ptThread == NULL)
{
continue; // still ugly, still works
}
// if the caller task asks for its own cpu usage, the time since the last
context switch will not be computed
if (ptThread->Object.id == taskId)
{
timeRan = ptThread->cpu_time_used;
uint64_t cpuUsageInUs = (_Timestamp_Get_seconds(&timeRan) *
static_cast(100)) + (_Timestamp_Get_nanoseconds(&timeRan) /
static_cast(1000));
return cpuUsageInUs;
}
}
}
}
// if the rtemsId doesn’t exist...
return 0;
}
}
De: users [mailto:users-boun...@rtems.org] Em nome de Joel Sherrill
Enviada em: quinta-feira, 12 de julho de 2018 11:37
Para: Mathew Benson
Cc: RTEMS
Assunto: Re: CPU utilization
On Tue, Jul 10, 2018 at 2:30 PM, Mathew Benson <
mben...@windhoverlabs.com> wrote:
What would be the recommend way to read CPU utilization? Am I correct in
saying, the best way would be to call rtems_cpu_usage_report_with_plugin()?
Its ill advised to access the private symbols utilized by the
rtems_cpu_usage_report_with_plugin() call directly, right? Is there another
function that I can call to return a structure rather than parsing it with the
rtems_printer plugin? I haven't dug into the rtems_printer object yet, but I'm
assuming I could use it and parse a string sent to it.
Yes. You could use the printer_object passed in to parse it.
There isn't a call to get this information (yet) and similarly, there isn't an
API to get the stack usage.
Proposals
Re: CPU utilization
On Tue, Jul 10, 2018 at 2:30 PM, Mathew Benson wrote: > What would be the recommend way to read CPU utilization? Am I correct in > saying, the best way would be to call rtems_cpu_usage_report_with_plugin()? > Its ill advised to access the private symbols utilized by the > rtems_cpu_usage_report_with_plugin() call directly, right? Is there > another function that I can call to return a structure rather than parsing > it with the rtems_printer plugin? I haven't dug into the rtems_printer > object yet, but I'm assuming I could use it and parse a string sent to it. > > Yes. You could use the printer_object passed in to parse it. There isn't a call to get this information (yet) and similarly, there isn't an API to get the stack usage. Proposals and code welcomed. :) --joel > > -- > *Mathew Benson* > CEO | Chief Engineer > Windhover Labs, LLC > 832-640-4018 > > > www.windhoverlabs.com > > > ___ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users > ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
