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Merge branch 'cxgb4-collect-free-Tx-Rx-pages-and-page-pointers'

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Rahul Lakkireddy says:

====================
cxgb4: collect free Tx/Rx pages and page pointers

Patch 1 collects number of free PSTRUCT page pointers in context
memory.

Patch 2 moves the collection logic for Tx/Rx free pages to common
code, since this information needs to be collected in vmcore device
dump as well.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2018-07-24 10:12:22 -07:00
commit c4ef85da78
5 changed files with 39 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h
View File

@ -120,6 +120,8 @@ struct cudbg_mem_desc {
u32 idx;
};
#define CUDBG_MEMINFO_REV 1
struct cudbg_meminfo {
struct cudbg_mem_desc avail[4];
struct cudbg_mem_desc mem[ARRAY_SIZE(cudbg_region) + 3];
@ -137,6 +139,9 @@ struct cudbg_meminfo {
u32 port_alloc[4];
u32 loopback_used[NCHAN];
u32 loopback_alloc[NCHAN];
u32 p_structs_free_cnt;
u32 free_rx_cnt;
u32 free_tx_cnt;
};
struct cudbg_cim_pif_la {

25
drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
View File

@ -349,6 +349,11 @@ int cudbg_fill_meminfo(struct adapter *padap,
meminfo_buff->up_extmem2_hi = hi;
lo = t4_read_reg(padap, TP_PMM_RX_MAX_PAGE_A);
for (i = 0, meminfo_buff->free_rx_cnt = 0; i < 2; i++)
meminfo_buff->free_rx_cnt +=
FREERXPAGECOUNT_G(t4_read_reg(padap,
TP_FLM_FREE_RX_CNT_A));
meminfo_buff->rx_pages_data[0] = PMRXMAXPAGE_G(lo);
meminfo_buff->rx_pages_data[1] =
t4_read_reg(padap, TP_PMM_RX_PAGE_SIZE_A) >> 10;
@ -356,6 +361,11 @@ int cudbg_fill_meminfo(struct adapter *padap,
lo = t4_read_reg(padap, TP_PMM_TX_MAX_PAGE_A);
hi = t4_read_reg(padap, TP_PMM_TX_PAGE_SIZE_A);
for (i = 0, meminfo_buff->free_tx_cnt = 0; i < 4; i++)
meminfo_buff->free_tx_cnt +=
FREETXPAGECOUNT_G(t4_read_reg(padap,
TP_FLM_FREE_TX_CNT_A));
meminfo_buff->tx_pages_data[0] = PMTXMAXPAGE_G(lo);
meminfo_buff->tx_pages_data[1] =
hi >= (1 << 20) ? (hi >> 20) : (hi >> 10);
@ -364,6 +374,8 @@ int cudbg_fill_meminfo(struct adapter *padap,
meminfo_buff->tx_pages_data[3] = 1 << PMTXNUMCHN_G(lo);
meminfo_buff->p_structs = t4_read_reg(padap, TP_CMM_MM_MAX_PSTRUCT_A);
meminfo_buff->p_structs_free_cnt =
FREEPSTRUCTCOUNT_G(t4_read_reg(padap, TP_FLM_FREE_PS_CNT_A));
for (i = 0; i < 4; i++) {
if (CHELSIO_CHIP_VERSION(padap->params.chip) > CHELSIO_T5)
@ -1465,14 +1477,23 @@ int cudbg_collect_meminfo(struct cudbg_init *pdbg_init,
struct adapter *padap = pdbg_init->adap;
struct cudbg_buffer temp_buff = { 0 };
struct cudbg_meminfo *meminfo_buff;
struct cudbg_ver_hdr *ver_hdr;
int rc;
rc = cudbg_get_buff(pdbg_init, dbg_buff, sizeof(struct cudbg_meminfo),
rc = cudbg_get_buff(pdbg_init, dbg_buff,
sizeof(struct cudbg_ver_hdr) +
sizeof(struct cudbg_meminfo),
&temp_buff);
if (rc)
return rc;
meminfo_buff = (struct cudbg_meminfo *)temp_buff.data;
ver_hdr = (struct cudbg_ver_hdr *)temp_buff.data;
ver_hdr->signature = CUDBG_ENTITY_SIGNATURE;
ver_hdr->revision = CUDBG_MEMINFO_REV;
ver_hdr->size = sizeof(struct cudbg_meminfo);
meminfo_buff = (struct cudbg_meminfo *)(temp_buff.data +
sizeof(*ver_hdr));
rc = cudbg_fill_meminfo(padap, meminfo_buff);
if (rc) {
cudbg_err->sys_err = rc;

3
drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
View File

@ -224,7 +224,8 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
len = sizeof(struct cudbg_tp_la) + TPLA_SIZE * sizeof(u64);
break;
case CUDBG_MEMINFO:
len = sizeof(struct cudbg_meminfo);
len = sizeof(struct cudbg_ver_hdr) +
sizeof(struct cudbg_meminfo);
break;
case CUDBG_CIM_PIF_LA:
len = sizeof(struct cudbg_cim_pif_la);

14
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
View File

@ -2858,7 +2858,6 @@ static int meminfo_show(struct seq_file *seq, void *v)
{
static const char * const memory[] = { "EDC0:", "EDC1:", "MC:",
"MC0:", "MC1:", "HMA:"};
unsigned int free_rx_cnt, free_tx_cnt;
struct adapter *adap = seq->private;
struct cudbg_meminfo meminfo;
int i, rc;
@ -2890,22 +2889,17 @@ static int meminfo_show(struct seq_file *seq, void *v)
mem_region_show(seq, "uP Extmem2:", meminfo.up_extmem2_lo,
meminfo.up_extmem2_hi);
for (i = 0, free_rx_cnt = 0; i < 2; i++)
free_rx_cnt += FREERXPAGECOUNT_G
(t4_read_reg(adap, TP_FLM_FREE_RX_CNT_A));
seq_printf(seq, "\n%u Rx pages (%u free) of size %uKiB for %u channels\n",
meminfo.rx_pages_data[0], free_rx_cnt,
meminfo.rx_pages_data[0], meminfo.free_rx_cnt,
meminfo.rx_pages_data[1], meminfo.rx_pages_data[2]);
for (i = 0, free_tx_cnt = 0; i < 4; i++)
free_tx_cnt += FREETXPAGECOUNT_G
(t4_read_reg(adap, TP_FLM_FREE_TX_CNT_A));
seq_printf(seq, "%u Tx pages (%u free) of size %u%ciB for %u channels\n",
meminfo.tx_pages_data[0], free_tx_cnt,
meminfo.tx_pages_data[0], meminfo.free_tx_cnt,
meminfo.tx_pages_data[1], meminfo.tx_pages_data[2],
meminfo.tx_pages_data[3]);
seq_printf(seq, "%u p-structs\n\n", meminfo.p_structs);
seq_printf(seq, "%u p-structs (%u free)\n\n",
meminfo.p_structs, meminfo.p_structs_free_cnt);
for (i = 0; i < 4; i++)
/* For T6 these are MAC buffer groups */

5
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View File

@ -1502,8 +1502,13 @@
#define TP_MIB_DATA_A 0x7e54
#define TP_INT_CAUSE_A 0x7e74
#define TP_FLM_FREE_PS_CNT_A 0x7e80
#define TP_FLM_FREE_RX_CNT_A 0x7e84
#define FREEPSTRUCTCOUNT_S 0
#define FREEPSTRUCTCOUNT_M 0x1fffffU
#define FREEPSTRUCTCOUNT_G(x) (((x) >> FREEPSTRUCTCOUNT_S) & FREEPSTRUCTCOUNT_M)
#define FREERXPAGECOUNT_S 0
#define FREERXPAGECOUNT_M 0x1fffffU
#define FREERXPAGECOUNT_V(x) ((x) << FREERXPAGECOUNT_S)