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path: root/target/linux/octeon/patches-2.6.34/003-sched_clock_no_gcc44x_inline.patch
blob: 2920de260e3c1b9d399f594ec23d53ff24c57c7f (plain)
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When building with a toolchain that is configured to produce 32-bits executable
by default, we will produce __lshrti3 in sched_clock() which is never resolved
so the kernel fails to link. Unconditionally use the inline assemble version
as suggested by David Daney, which works around the issue.

CC: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
 arch/mips/cavium-octeon/csrc-octeon.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)

diff --git a/arch/mips/cavium-octeon/csrc-octeon.c b/arch/mips/cavium-octeon/csrc-octeon.c
index 0bf4bbe..36400d2 100644
--- a/arch/mips/cavium-octeon/csrc-octeon.c
+++ b/arch/mips/cavium-octeon/csrc-octeon.c
@@ -53,7 +53,6 @@ static struct clocksource clocksource_mips = {
 unsigned long long notrace sched_clock(void)
 {
 	/* 64-bit arithmatic can overflow, so use 128-bit.  */
-#if (__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ <= 3))
 	u64 t1, t2, t3;
 	unsigned long long rv;
 	u64 mult = clocksource_mips.mult;
@@ -73,13 +72,6 @@ unsigned long long notrace sched_clock(void)
 		: [cnt] "r" (cnt), [mult] "r" (mult), [shift] "r" (shift)
 		: "hi", "lo");
 	return rv;
-#else
-	/* GCC > 4.3 do it the easy way.  */
-	unsigned int __attribute__((mode(TI))) t;
-	t = read_c0_cvmcount();
-	t = t * clocksource_mips.mult;
-	return (unsigned long long)(t >> clocksource_mips.shift);
-#endif
 }
 
 void __init plat_time_init(void)
-- 
1.7.1