AcoSail/kernel_optimize_test
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sfc: Set PERIODIC_NOEVENT flag for MC_CMD_MAC_STATS

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When set, an event is not sent whenever periodic MAC statistics are
raised.  This avoids unnecessary wake-ups.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Hodgson 2010-04-28 09:29:32 +00:00 committed by David S. Miller
parent fbcfe8e152
commit 3a595102d4
1 changed files with 9 additions and 16 deletions
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25
drivers/net/sfc/mcdi_mac.c
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@ -80,7 +80,7 @@ int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
u8 inbuf[MC_CMD_MAC_STATS_IN_LEN];
int rc;
efx_dword_t *cmd_ptr;
int period = 1000;
int period = enable ? 1000 : 0;
u32 addr_hi;
u32 addr_lo;
@ -92,21 +92,14 @@ int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_LO, addr_lo);
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_HI, addr_hi);
cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
if (enable)
EFX_POPULATE_DWORD_6(*cmd_ptr,
MC_CMD_MAC_STATS_CMD_DMA, 1,
MC_CMD_MAC_STATS_CMD_CLEAR, clear,
MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 1,
MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
else
EFX_POPULATE_DWORD_5(*cmd_ptr,
MC_CMD_MAC_STATS_CMD_DMA, 0,
MC_CMD_MAC_STATS_CMD_CLEAR, clear,
MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 0,
MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0);
EFX_POPULATE_DWORD_7(*cmd_ptr,
MC_CMD_MAC_STATS_CMD_DMA, !!enable,
MC_CMD_MAC_STATS_CMD_CLEAR, clear,
MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, !!enable,
MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
MC_CMD_MAC_STATS_CMD_PERIODIC_NOEVENT, 1,
MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),