nicely as an extension of my KTLS prototype (extensible
rseq):
https://lore.kernel.org/lkml/20200925181518.4141-1-mathieu.desnoy...@efficios.com/
There are a few ways we could wire things up. One might be to add the
UUID field into the extended KTLS structure (so it's always updated after it
}
> +atomic_add(&n_nodes, RCU_Q_LEN);
> +}
> +
> +static void rcu_qtest_run(int duration, int nreaders)
> +{
> +int nthreads = nreaders + 1;
> +while (atomic_read(&nthreadsrunning) < nthreads) {
> +g_usleep(1000);
> +}
> +
> +goflag = GOFLAG_RUN;
> +sleep(duration);
> +goflag = GOFLAG_STOP;
> +wait_all_threads();
> +}
> +
> +
> +static void rcu_qtest(const char *test, int duration, int nreaders)
> +{
> +int i;
> +long long n_removed_local=0;
> +
> +struct list_element *el, *prev_el;
> +
> +rcu_qtest_init();
> +for (i = 0; i < nreaders; i++) {
> +create_thread(rcu_q_reader);
> +}
> +create_thread(rcu_q_updater);
> +rcu_qtest_run(duration, nreaders);
> +rcu_thread_offline();
> +
> +QLIST_FOREACH_SAFE_RCU(prev_el, &Q_list_head, entry, el) {
> +QLIST_REMOVE_RCU(prev_el, entry);
> +call_rcu1(&prev_el->rcu, reclaim_list_el);
> +n_removed_local++;
> +}
> +atomic_add(&n_nodes_removed, n_removed_local);
> +rcu_quiescent_state();
> +synchronize_rcu();
> +while (n_nodes_removed > n_reclaims){
> +rcu_quiescent_state();
> +g_usleep(100);
> +synchronize_rcu();
> +}
> +printf("%s: %d readers; 1 updater; nodes read: %lld, nodes removed:
> %lld; nodes reclaimed: %lld\n",
> + test, nthreadsrunning -1, n_reads, n_nodes_removed, n_reclaims);
> +exit(0);
> +}
> +
> +static void usage(int argc, char *argv[])
> +{
> +fprintf(stderr, "Usage: %s duration nreaders\n", argv[0]);
> +exit(-1);
> +}
> +
> +
> +int main(int argc, char *argv[])
> +{
> +int duration = 0, readers = 0;
> +
> +if (argc >= 2) {
> +duration = strtoul(argv[1], NULL, 0);
> +}
> +if (argc >= 3) {
> +readers = strtoul(argv[2], NULL, 0);
> +}
> +
> +/* This thread is not part of the test. */
> +rcu_thread_offline();
> +if (duration && readers)
> +rcu_qtest(argv[0], duration, readers);
> +usage(argc, argv);
> +return 0;
> +}
> --
> 1.8.3.1
>
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
Hi Stefan,
* Stefan Hajnoczi (stefa...@gmail.com) wrote:
> On Tue, Jan 10, 2012 at 12:14 AM, Mathieu Desnoyers
> wrote:
> > This is needed to (very soon) add support for sdt.h in LTTng-UST 2.0, so
> > systemtap and gdb can hook into tracepoints declared by lttng-ust 2.0.
>
* Harsh Bora (ha...@linux.vnet.ibm.com) wrote:
> On 01/10/2012 02:36 PM, Harsh Bora wrote:
>> On 01/10/2012 12:47 PM, Mathieu Desnoyers wrote:
>>> * Harsh Bora (ha...@linux.vnet.ibm.com) wrote:
>>>> On 01/10/2012 05:44 AM, Mathieu Desnoyers wrote:
>>>&g
* Harsh Bora (ha...@linux.vnet.ibm.com) wrote:
> On 01/10/2012 05:44 AM, Mathieu Desnoyers wrote:
>> * Harsh Bora (ha...@linux.vnet.ibm.com) wrote:
>>> On 01/09/2012 09:31 PM, Mathieu Desnoyers wrote:
>>>> * Harsh Prateek Bora (ha...@linux.vnet.ibm.com) wrote:
>&
* Harsh Bora (ha...@linux.vnet.ibm.com) wrote:
> On 01/09/2012 09:31 PM, Mathieu Desnoyers wrote:
>> * Harsh Prateek Bora (ha...@linux.vnet.ibm.com) wrote:
>>> Existing simple trace can log upto 6 args per trace event and does not
>>> support strings in trace record fo
ace.py | 110 ++-
> scripts/tracetool.py | 505
>
> trace/simple.c | 178 ++---
> trace/simple.h | 31 +++-
> 8 files changed, 702 insertions(+), 144 deletions(-)
> create mode 100755 scripts/tracetool.py
>
--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
* Stefan Hajnoczi (stefa...@gmail.com) wrote:
> 2011/9/20 Mathieu Desnoyers :
> > * Lluís Vilanova (vilan...@ac.upc.edu) wrote:
> >> Stefan Hajnoczi writes:
> >>
> >> > On Fri, Sep 16, 2011 at 06:59:38PM +0200, Lluís Vilanova wrote:
> >> >> Si
becomes that much richer."
> -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
> Tollbooth
>
--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
t; assume
> the two patches I sent (this naming issue and the zero-length printf format)
> are
> just no longer necessary with recent versions of libust.
>
>
> Thanks,
> Lluis
>
> --
> "And it's much the same thing with knowledge, for whenever you l
xing that for trace_mark() instrumentation in UST 0.x ages
ago (ok, probably last winter). I think simply updating to a new UST
version will fix the issue.
Best regards,
Mathieu
>
> Stefan
>
> ___
> ltt-dev mailing list
> ltt-...@lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
5144748823020811/32575_5629652727107472206/ust_6),
0, 0, , , 0, 0x0, MODE_UNKNOWN { ptr = 0x1187660 }
--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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