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sys/membarrier.h: add new constants from linux v5.10 

can cause rseq restart on another cpu to synchronize with global
memory access from rseq critical sections, see

  linux commit 2a36ab717e8fe678d98f81c14a0b124712719840
  rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ
This commit is contained in:
Szabolcs Nagy 2020-12-19 20:27:22 +00:00 committed by Rich Felker
parent fd285f9dec
commit 54ca1cc7f1
1 changed files with 4 additions and 0 deletions
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4
include/sys/membarrier.h
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@ -9,9 +9,13 @@
#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED 16
#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE 32
#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE 64
#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ 128
#define MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ 256
#define MEMBARRIER_CMD_SHARED MEMBARRIER_CMD_GLOBAL
#define MEMBARRIER_CMD_FLAG_CPU 1
int membarrier(int, int);
#endif