On 07/02/18 21:03, Kim Phillips wrote:
Commit 1c8859848dbb ("coresight replicator: Cleanup programmable
replicator naming") changed the Kconfig symbol name from
QCOM_REPLICATOR, which, whilst not in the single arm64 defconfig,
was being set in my juno build script, which left the new symbol unset,
causing the following unexpected grief:
# ./perf record -vvv -C 0 -e cs_etm/@20070000.etr/ --per-thread true
..<snip>..
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
mmap size 528384B
AUX area mmap length 4194304
perf event ring buffer mmapped per cpu
failed to mmap AUX area
failed to mmap with 12 (Cannot allocate memory)
Make it default y to help not surprise unsuspecting users.
How many users are there relying on your Juno build script? :P
Fixes: 1c8859848dbb ("coresight replicator: Cleanup programmable replicator
naming")
Before that commit, CORESIGHT_QCOM_REPLICATOR was not "default y", nor
selected by any in-tree configs, so whatever the problem may be this is
clearly not the correct fix.
Cc: Mathieu Poirier <mathieu.poir...@linaro.org>
Cc: Suzuki K Poulose <suzuki.poul...@arm.com>
Signed-off-by: Kim Phillips <kim.phill...@arm.com>
---
drivers/hwtracing/coresight/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hwtracing/coresight/Kconfig
b/drivers/hwtracing/coresight/Kconfig
index ef9cb3c164e1..b94bbd95efa6 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -73,6 +73,7 @@ config CORESIGHT_SOURCE_ETM4X
config CORESIGHT_DYNAMIC_REPLICATOR
bool "CoreSight Programmable Replicator driver"
depends on CORESIGHT_LINKS_AND_SINKS
+ default y
CORESIGHT_LINKS_AND_SINKS is "default n" (as indeed is CORESIGHT), and
not selected by any defconfigs, so in general this doesn't really help
anyway.
Robin.
help
This enables support for dynamic CoreSight replicator link driver.
The programmable ATB replicator allows independent filtering of the
