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mcctrl_ikc_send_wait: give possibility to use pre-allocated desc

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Change-Id: I1afbabe792648bbf2c5a9a38ebbfba8ea9060d06
This commit is contained in:
Dominique Martinet
2018-06-29 13:49:36 +09:00
parent b939ca9370
commit b87c06cbcb
3 changed files with 40 additions and 21 deletions
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28
executer/kernel/mcctrl/mcctrl.h
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@@ -369,9 +369,33 @@ int mcctrl_ikc_send(ihk_os_t os, int cpu, struct ikc_scd_packet *pisp);
int mcctrl_ikc_send_msg(ihk_os_t os, int cpu, int msg, int ref, unsigned long arg);
int mcctrl_ikc_is_valid_thread(ihk_os_t os, int cpu);
/* ikc query-and-wait helper */
struct mcctrl_wakeup_desc {
int status;
int err;
wait_queue_head_t wq;
struct list_head chain;
int free_addrs_count;
void *free_addrs[];
};
/* ikc query-and-wait helper
*
* Arguments:
* - os, cpu and pisp as per mcctl_ikc_send()
* - timeout: time to wait for reply in ms
* - desc: if set, memory area to be used for desc.
* Care must be taken to leave room for variable-length array.
* - do_free: returns bool that specify if the caller should free
* its memory on error (e.g. if ikc_send failed in the first place,
* the reply has no chance of coming and memory should be free)
* Always true on success.
* - free_addrs_count & ...: addresses to kmalloc'd pointers that
* are referenced in the message and must be left intact if we
* abort to timeout/signal.
*/
int mcctrl_ikc_send_wait(ihk_os_t os, int cpu, struct ikc_scd_packet *pisp,
long int timeout, int *do_frees, int free_addrs_count, ...);
long int timeout, struct mcctrl_wakeup_desc *desc,
int *do_frees, int free_addrs_count, ...);
ihk_os_t osnum_to_os(int n);