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event: Add lw_thread helper functions required for scheduler

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Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
Change-Id: Ifd21adad6116d75170d5a6ff4b6d03470644feab
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4338
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Maciej Szwed 2020-09-22 11:46:18 +02:00 committed by Tomasz Zawadzki
parent 2a146cd936
commit 0d8a4af849
2 changed files with 34 additions and 4 deletions
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18
include/spdk_internal/event.h
View File

@ -248,6 +248,24 @@ static void __attribute__((constructor)) _spdk_scheduler_register_##name(void) \
spdk_scheduler_list_add(scheduler); \
} \
/**
* Set new CPU core index. Used for scheduling, assigns new CPU core index and marks it =
* for rescheduling - does not actually change it. Can be used with SPDK_ENV_LCORE_ID_ANY
*
* \param thread thread to change core.
* \param lcore new CPU core index.
*/
void _spdk_lw_thread_set_core(struct spdk_lw_thread *thread, uint32_t lcore);
/**
* Get threads stats
*
* \param thread thread that stats regards to.
* \param stats Output parameter for accumulated TSC counts while the thread was busy.
*/
void _spdk_lw_thread_get_current_stats(struct spdk_lw_thread *thread,
struct spdk_thread_stats *stats);
/**
* \brief Register a new subsystem
*/

20
lib/event/reactor.c
View File

@ -738,10 +738,7 @@ _reactor_request_thread_reschedule(struct spdk_thread *thread)
lw_thread = spdk_thread_get_ctx(thread);
assert(lw_thread != NULL);
lw_thread->resched = true;
lw_thread->lcore = SPDK_ENV_LCORE_ID_ANY;
_spdk_lw_thread_set_core(lw_thread, SPDK_ENV_LCORE_ID_ANY);
current_core = spdk_env_get_current_core();
reactor = spdk_reactor_get(current_core);
@ -942,4 +939,19 @@ reactor_interrupt_fini(struct spdk_reactor *reactor)
reactor->fgrp = NULL;
}
void
_spdk_lw_thread_set_core(struct spdk_lw_thread *thread, uint32_t lcore)
{
assert(thread != NULL);
thread->lcore = lcore;
thread->resched = true;
}
void
_spdk_lw_thread_get_current_stats(struct spdk_lw_thread *thread, struct spdk_thread_stats *stats)
{
assert(thread != NULL);
*stats = thread->current_stats;
}
SPDK_LOG_REGISTER_COMPONENT(reactor)