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IKC2: adjust master channel message queue size dynamically

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Determine master channel's message queue size based on the number of
LWK CPUs so that all cores can communicate simultaneously during
syscall channel initialization.
This commit is contained in:
Balazs Gerofi
2016-10-24 20:32:52 +09:00
committed by Balazs Gerofi
parent 60b6713957
commit 5f973ab51e
1 changed files with 12 additions and 5 deletions
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17
arch/x86/kernel/mikc.c
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@ -16,6 +16,7 @@
#include <memory.h>
#include <string.h>
extern int num_processors;
extern void arch_set_mikc_queue(void *r, void *w);
ihk_ikc_ph_t arch_master_channel_packet_handler;
@ -23,17 +24,23 @@ int ihk_mc_ikc_init_first_local(struct ihk_ikc_channel_desc *channel,
ihk_ikc_ph_t packet_handler)
{
struct ihk_ikc_queue_head *rq, *wq;
size_t mikc_queue_pages;
ihk_ikc_system_init(NULL);
memset(channel, 0, sizeof(struct ihk_ikc_channel_desc));
/* Place both sides in this side */
rq = ihk_mc_alloc_pages(1, IHK_MC_AP_CRITICAL);
wq = ihk_mc_alloc_pages(1, IHK_MC_AP_CRITICAL);
mikc_queue_pages = ((num_processors * MASTER_IKCQ_PKTSIZE)
+ (PAGE_SIZE - 1)) / PAGE_SIZE;
ihk_ikc_init_queue(rq, 0, 0, PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
ihk_ikc_init_queue(wq, 0, 0, PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
/* Place both sides in this side */
rq = ihk_mc_alloc_pages(mikc_queue_pages, IHK_MC_AP_CRITICAL);
wq = ihk_mc_alloc_pages(mikc_queue_pages, IHK_MC_AP_CRITICAL);
ihk_ikc_init_queue(rq, 0, 0,
mikc_queue_pages * PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
ihk_ikc_init_queue(wq, 0, 0,
mikc_queue_pages * PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
arch_master_channel_packet_handler = packet_handler;