hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[S390] get_clock inline assembly. 

Add missing volatile to the get_clock / get_cycles inline assemblies
to avoid that consecutive calls get optimized away.

Signed-off-by: Andreas Krebbel <krebbel1@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Andreas Krebbel 2006-07-17 16:09:42 +02:00 committed by Martin Schwidefsky
parent 13ffa927ab
commit 53ba5e09fe
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/asm-s390/timex.h
View File

@ -19,7 +19,7 @@ static inline cycles_t get_cycles(void)
{
cycles_t cycles;
__asm__("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
__asm__ __volatile__ ("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
return cycles >> 2;
}
@ -27,7 +27,7 @@ static inline unsigned long long get_clock (void)
{
unsigned long long clk;
__asm__("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
__asm__ __volatile__ ("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
return clk;
}