lkml.org 
[lkml]   [2022]   [Dec]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] hamradio: baycom_epp: Do not use x86-specific rdtsc()
Date
From: "Borislav Petkov (AMD)" <bp@alien8.de>

Use get_cycles() which is provided by pretty much every arch.

The UML build works too because get_cycles() is a simple "return 0;"
because the rdtsc() is optimized away there.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
---
drivers/net/hamradio/baycom_epp.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index bd3b0c2655a2..83ff882f5d97 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -623,16 +623,10 @@ static int receive(struct net_device *dev, int cnt)

/* --------------------------------------------------------------------- */

-#if defined(__i386__) && !defined(CONFIG_UML)
-#include <asm/msr.h>
#define GETTICK(x) \
({ \
- if (boot_cpu_has(X86_FEATURE_TSC)) \
- x = (unsigned int)rdtsc(); \
+ x = (unsigned int)get_cycles(); \
})
-#else /* __i386__ && !CONFIG_UML */
-#define GETTICK(x)
-#endif /* __i386__ && !CONFIG_UML */

static void epp_bh(struct work_struct *work)
{
--
2.35.1
\
 
 \ /
  Last update: 2022-12-18 13:05    [W:0.045 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site