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Merge "coresight: tmc: set buffer size to 32MB on SW USB mode"

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qctecmdr 2020-05-25 06:14:50 -07:00 • committed by Gerrit - the friendly Code Review server
commit 81604f60ff
1 changed files with 8 additions and 1 deletions
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9
drivers/hwtracing/coresight/coresight-tmc-etr.c
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@ -45,6 +45,9 @@ struct etr_perf_buffer {
/* Lower limit for ETR hardware buffer */
#define TMC_ETR_PERF_MIN_BUF_SIZE SZ_1M
/* SW USB reserved memory size */
#define TMC_ETR_SW_USB_BUF_SIZE SZ_32M
/*
* The TMC ETR SG has a page size of 4K. The SG table contains pointers
* to 4KB buffers. However, the OS may use a PAGE_SIZE different from
@ -1082,7 +1085,11 @@ ssize_t tmc_etr_get_sysfs_trace(struct tmc_drvdata *drvdata,
static struct etr_buf *
tmc_etr_setup_sysfs_buf(struct tmc_drvdata *drvdata)
{
return tmc_alloc_etr_buf(drvdata, drvdata->size,
if (drvdata->byte_cntr->sw_usb)
return tmc_alloc_etr_buf(drvdata, TMC_ETR_SW_USB_BUF_SIZE,
0, cpu_to_node(0), NULL);
else
return tmc_alloc_etr_buf(drvdata, drvdata->size,
0, cpu_to_node(0), NULL);
}