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HFI1: make kmalloc caches per-CPU and pre-allocate at boot time

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This commit is contained in:
Balazs Gerofi
2017-10-25 13:19:08 +09:00
parent 33ad55e72b
commit 5bea237581
6 changed files with 37 additions and 14 deletions
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21
kernel/user_sdma.c
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@@ -873,8 +873,6 @@ int hfi1_unmap_device_addresses(struct process *proc)
return ret;
}
struct kmalloc_cache_header tids_cache = {NULL};
#undef PROFILE_ENABLE
#ifdef __HFI1_ORIG__
@@ -1143,7 +1141,8 @@ int hfi1_user_sdma_process_request(void *private_data, struct iovec *iovec,
ret = -EINVAL;
goto free_req;
}
req->tids = kmalloc_cache_alloc(&tids_cache,
req->tids = kmalloc_cache_alloc(
&cpu_local_var(tids_cache),
sizeof(*req->tids) * MAX_TID_PAIR_ENTRIES);
if (!req->tids) {
ret = -ENOMEM;
@@ -1336,10 +1335,22 @@ static inline u32 get_lrh_len(struct hfi1_pkt_header hdr, u32 len)
return ((sizeof(hdr) - sizeof(hdr.pbc)) + 4 + len);
}
void hfi1_txreq_prealloc(void)
void hfi1_kmalloc_cache_prealloc(void)
{
/*
* TODO: nr_elems have been determined based on profiling
* HACC and UMT2013, would be interesting to do some clever
* dynamic releasing/expanding.
*/
kmalloc_cache_prealloc(&cpu_local_var(txreq_cache),
sizeof(struct user_sdma_txreq));
sizeof(struct user_sdma_txreq), 2048);
kmalloc_cache_prealloc(&cpu_local_var(tids_cache),
sizeof(*(((struct user_sdma_request *)0)->tids)) *
MAX_TID_PAIR_ENTRIES, 256);
kmalloc_cache_prealloc(&cpu_local_var(tidlist_cache),
sizeof(u32) * 2048, 128);
kmalloc_cache_prealloc(&cpu_local_var(tid_node_cache),
sizeof(struct tid_rb_node), 512);
}
static int user_sdma_send_pkts(struct user_sdma_request *req,