[coreboot] I want submit some code, but there are some problem
王翔
merle at tya.email
Tue Jul 3 10:25:46 CEST 2018
I want submit some code to support temporarily block multiple-threads.
But this code can't pass check by `checkpatch`.
This code look like this:
```
#define barrier() {asm volatile ("fence" ::: "memory"); }
/*
* If your code needs to temporarily block multiple-threads, do this:
* SMP_PAUSE(active) // `active` is hartid of working thread
* ... single-threaded work ...
* SMP_RESUME()
* ... multi-threaded work ...
*/
#define SMP_PAUSE(active) do \
{ \
__label__ l_entry, l_exit; \
static int _flag_; \
if (active == read_csr(mhartid)) \
goto l_entry; \
do {barrier(); } while (!_flag_); \
goto l_exit; \
l_entry:
#define SMP_RESUME() \
_flag_ = 1; \
l_exit: \
barrier(); \
} while (0)
```
Xiang Wang
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