On 11/25/20 9:10 AM, Mathieu Desnoyers wrote:
----- On Nov 24, 2020, at 11:04 PM, Xingxing Su [email protected] wrote:

Except arch x86, the function rseq_offset_deref_addv is not defined.
The function test_membarrier_manager_thread call rseq_offset_deref_addv
produces a build error.

The RSEQ_ARCH_HAS_OFFSET_DEREF_ADD should contain all the code
for the MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ.
If the other Arch implements this feature,
defined RSEQ_ARCH_HAS_OFFSET_DEREF_ADD in the header file
to ensure that this feature is available.

Following build errors:

param_test.c: In function ‘test_membarrier_worker_thread’:
param_test.c:1164:10: warning: implicit declaration of function
‘rseq_offset_deref_addv’
    ret = rseq_offset_deref_addv(&args->percpu_list_ptr,
          ^~~~~~~~~~~~~~~~~~~~~~
/tmp/ccMj9yHJ.o: In function `test_membarrier_worker_thread':
param_test.c:1164: undefined reference to `rseq_offset_deref_addv'
param_test.c:1164: undefined reference to `rseq_offset_deref_addv'
collect2: error: ld returned 1 exit status
make: *** [/selftests/rseq/param_test_benchmark] Error 1

Signed-off-by: Xingxing Su <[email protected]>

Acked-by: Mathieu Desnoyers <[email protected]>

Shuah, can you pick up this fix please ?


Applying for 5.11-rc1.

thanks,
-- Shuah

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