Commit 20362e5b authored by Maciej Szwed's avatar Maciej Szwed Committed by Tomasz Zawadzki
Browse files

schedulers: Add _get_next_target_lcore function 



This function will be useful in upcoming patch.

Signed-off-by: default avatarMaciej Szwed <maciej.szwed@intel.com>
Change-Id: I2a79305b8cb155a94c83b4baa3f5d7014cb602c9
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6079


Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
parent e742a414

lib/event/scheduler_dynamic.c

+16 −6
Original line number Diff line number Diff line
@@ -48,6 +48,21 @@ uint64_t g_last_main_core_busy, g_last_main_core_idle; 
#define SCHEDULER_THREAD_BUSY 100

#define SCHEDULER_LOAD_LIMIT 50



static uint32_t

_get_next_target_core(void)

{

	uint32_t target_lcore;



	if (g_next_lcore == SPDK_ENV_LCORE_ID_ANY) {

		g_next_lcore = spdk_env_get_first_core();

	}



	target_lcore = g_next_lcore;

	g_next_lcore = spdk_env_get_next_core(g_next_lcore);



	return target_lcore;

}



static uint8_t

_get_thread_load(struct spdk_lw_thread *lw_thread)

{
@@ -160,12 +175,7 @@ balance(struct spdk_scheduler_core_info *cores_info, int cores_count, 
			if (i == g_main_lcore && load >= SCHEDULER_LOAD_LIMIT) {

				/* This thread is active and on the main core, we need to pick a core to move it to */

				for (k = 0; k < spdk_env_get_core_count(); k++) {

					if (g_next_lcore == SPDK_ENV_LCORE_ID_ANY) {

						g_next_lcore = spdk_env_get_first_core();

					}



					target_lcore = g_next_lcore;

					g_next_lcore = spdk_env_get_next_core(g_next_lcore);

					target_lcore = _get_next_target_core();



					/* Do not use main core if it is too busy for new thread */

					if (target_lcore == g_main_lcore && thread_busy > main_core_idle) {