diff options
| author | Rutuja Shah <rutu.shah.26@gmail.com> | 2016-10-17 19:22:16 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-10-17 19:22:16 +0100 |
| commit | cabbcca0375a96f2e0ccae660ca9dc1510adafbd (patch) | |
| tree | 51d8d90c2d583b2940dd7754f4b8f1ebd64aae06 /hw/dma | |
| parent | bcf48274ba6fbe6158beccd9d4be4c22931f33b9 (diff) | |
Reducing stack frame size in stream_process_mem2s()
This patch allocates memory for txbuf in struct Stream rather than the stack.
As a result, the stack frame size is reduced of stream_process_mem2s().
Signed-off-by: Rutuja Shah <rutu.shah.26@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/xilinx_axidma.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c index b135a5ff12..6065689ad1 100644 --- a/hw/dma/xilinx_axidma.c +++ b/hw/dma/xilinx_axidma.c @@ -111,6 +111,7 @@ struct Stream { unsigned int complete_cnt; uint32_t regs[R_MAX]; uint8_t app[20]; + unsigned char txbuf[16 * 1024]; }; struct XilinxAXIDMAStreamSlave { @@ -256,7 +257,6 @@ static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev, StreamSlave *tx_control_dev) { uint32_t prev_d; - unsigned char txbuf[16 * 1024]; unsigned int txlen; if (!stream_running(s) || stream_idle(s)) { @@ -277,17 +277,17 @@ static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev, } txlen = s->desc.control & SDESC_CTRL_LEN_MASK; - if ((txlen + s->pos) > sizeof txbuf) { + if ((txlen + s->pos) > sizeof s->txbuf) { hw_error("%s: too small internal txbuf! %d\n", __func__, txlen + s->pos); } cpu_physical_memory_read(s->desc.buffer_address, - txbuf + s->pos, txlen); + s->txbuf + s->pos, txlen); s->pos += txlen; if (stream_desc_eof(&s->desc)) { - stream_push(tx_data_dev, txbuf, s->pos); + stream_push(tx_data_dev, s->txbuf, s->pos); s->pos = 0; stream_complete(s); } |