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IB/hfi1: Add new debugfs sdma_cpu_list file

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Add a debugfs sdma_cpu_list file that can be used to examine the CPU to
sdma engine assignments for the whole device.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Reviewed-by: Jianxin Xiong <jianxin.xiong@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Tadeusz Struk 2016-09-25 07:44:44 -07:00 committed by Doug Ledford
parent 2d01c37d75
commit af3674d62d
3 changed files with 83 additions and 0 deletions
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38
drivers/infiniband/hw/hfi1/debugfs.c
View file

@ -933,6 +933,43 @@ static const struct counter_info port_cntr_ops[] = {
DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write),
};
static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos)
{
if (*pos >= num_online_cpus())
return NULL;
return pos;
}
static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
++*pos;
if (*pos >= num_online_cpus())
return NULL;
return pos;
}
static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v)
{
/* nothing allocated */
}
static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v)
{
struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
struct hfi1_devdata *dd = dd_from_dev(ibd);
loff_t *spos = v;
loff_t i = *spos;
sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i);
return 0;
}
DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
DEBUGFS_FILE_OPS(sdma_cpu_list);
void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
{
char name[sizeof("port0counters") + 1];
@ -961,6 +998,7 @@ void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
DEBUGFS_SEQ_FILE_CREATE(ctx_stats, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(qp_stats, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(sdes, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(sdma_cpu_list, ibd->hfi1_ibdev_dbg, ibd);
/* dev counter files */
for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
DEBUGFS_FILE_CREATE(cntr_ops[i].name,

43
drivers/infiniband/hw/hfi1/sdma.c
View file

@ -1093,6 +1093,49 @@ static void sdma_rht_free(void *ptr, void *arg)
kfree(rht_node);
}
/**
* sdma_seqfile_dump_cpu_list() - debugfs dump the cpu to sdma mappings
* @s: seq file
* @dd: hfi1_devdata
* @cpuid: cpu id
*
* This routine dumps the process to sde mappings per cpu
*/
void sdma_seqfile_dump_cpu_list(struct seq_file *s,
struct hfi1_devdata *dd,
unsigned long cpuid)
{
struct sdma_rht_node *rht_node;
int i, j;
rht_node = rhashtable_lookup_fast(&dd->sdma_rht, &cpuid,
sdma_rht_params);
if (!rht_node)
return;
seq_printf(s, "cpu%3lu: ", cpuid);
for (i = 0; i < HFI1_MAX_VLS_SUPPORTED; i++) {
if (!rht_node->map[i] || !rht_node->map[i]->ctr)
continue;
seq_printf(s, " vl%d: [", i);
for (j = 0; j < rht_node->map[i]->ctr; j++) {
if (!rht_node->map[i]->sde[j])
continue;
if (j > 0)
seq_puts(s, ",");
seq_printf(s, " sdma%2d",
rht_node->map[i]->sde[j]->this_idx);
}
seq_puts(s, " ]");
}
seq_puts(s, "\n");
}
/*
* Free the indicated map struct
*/

2
drivers/infiniband/hw/hfi1/sdma.h
View file

@ -1068,6 +1068,8 @@ ssize_t sdma_set_cpu_to_sde_map(struct sdma_engine *sde, const char *buf,
size_t count);
int sdma_engine_get_vl(struct sdma_engine *sde);
void sdma_seqfile_dump_sde(struct seq_file *s, struct sdma_engine *);
void sdma_seqfile_dump_cpu_list(struct seq_file *s, struct hfi1_devdata *dd,
unsigned long cpuid);
#ifdef CONFIG_SDMA_VERBOSITY
void sdma_dumpstate(struct sdma_engine *);