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authorHelge Deller <deller@gmx.de>2018-01-13 00:44:00 +0300
committerHelge Deller <deller@gmx.de>2018-03-02 12:04:59 +0300
commit5ffa8518851f1401817c15d2a7eecc0373c26ff9 (patch)
tree5b3a2783b111de3a4c69eaa8a57a463db14dfcee /arch/parisc
parent0ed1fe4ad394e54783bbffa84102faf435661a2e (diff)
downloadlinux-5ffa8518851f1401817c15d2a7eecc0373c26ff9.tar.xz
parisc: Use cr16 interval timers unconditionally on qemu
When running on qemu we know that the (emulated) cr16 cpu-internal clocks are syncronized. So let's use them unconditionally on qemu. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # 4.14+
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/include/asm/processor.h2
-rw-r--r--arch/parisc/kernel/time.c2
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
index 0e6ab6e4a4e9..2dbe5580a1a4 100644
--- a/arch/parisc/include/asm/processor.h
+++ b/arch/parisc/include/asm/processor.h
@@ -316,6 +316,8 @@ extern int _parisc_requires_coherency;
#define parisc_requires_coherency() (0)
#endif
+extern int running_on_qemu;
+
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PARISC_PROCESSOR_H */
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 4b8fd6dc22da..68e88e5c0898 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -248,7 +248,7 @@ static int __init init_cr16_clocksource(void)
* different sockets, so mark them unstable and lower rating on
* multi-socket SMP systems.
*/
- if (num_online_cpus() > 1) {
+ if (num_online_cpus() > 1 && !running_on_qemu) {
int cpu;
unsigned long cpu0_loc;
cpu0_loc = per_cpu(cpu_data, 0).cpu_loc;