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| author | Andrew Jeffery <andrew@aj.id.au> | 2018-02-20 14:48:33 +1030 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 14:04:13 +1000 |
| commit | 918da95176beb743ff47b3bbfb0a4ee420658a95 (patch) | |
| tree | 6b60ae01368fc4b4c3ddc9dab0679496aae4d61c /drivers/fsi | |
| parent | 8efcf34a263965e471e3999904f94d1f6799d42a (diff) | |
| download | linux-918da95176beb743ff47b3bbfb0a4ee420658a95.tar.bz2 | |
fsi: gpio: Trace busy count
An observation from trace output of the existing FSI tracepoints was
that the remote device was sometimes reporting as busy. Add a new
tracepoint reporting the busy count in order to get a better grip on how
often this is the case.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Eddie James <eajames@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-master-gpio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c index 3f487449a277..2a49b167effe 100644 --- a/drivers/fsi/fsi-master-gpio.c +++ b/drivers/fsi/fsi-master-gpio.c @@ -401,6 +401,9 @@ retry: break; } + if (busy_count > 0) + trace_fsi_master_gpio_poll_response_busy(master, busy_count); + /* Clock the slave enough to be ready for next operation */ clock_zeros(master, FSI_GPIO_PRIME_SLAVE_CLOCKS); return rc; |