Commit 53ba5e09 authored by Andreas Krebbel's avatar Andreas Krebbel Committed by Martin Schwidefsky

[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: default avatarAndreas Krebbel <krebbel1@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 13ffa927
......@@ -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;
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment