diff options
| author | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2005-11-15 19:24:51 +0000 |
|---|---|---|
| committer | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2005-11-15 19:24:51 +0000 |
| commit | 3b5e2d23687b83844df057983eab8ae3dd19b727 (patch) | |
| tree | 6bd2841ee2ff12448032c01f288b61dd4b22035a /openwrt/target/linux/linux-2.4 | |
| parent | c24381f99e7ff26ab84c065a5b87ef358e5a7de8 (diff) | |
work around the remaining race condition in the tsc sched stuff
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2503 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'openwrt/target/linux/linux-2.4')
| -rw-r--r-- | openwrt/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch | 17 | ||||
| -rw-r--r-- | openwrt/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch | 17 |
2 files changed, 24 insertions, 10 deletions
diff --git a/openwrt/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch b/openwrt/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch index 69bf01a76..5b6431073 100644 --- a/openwrt/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch +++ b/openwrt/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch @@ -1,7 +1,7 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c --- linux.old/arch/mips/kernel/time.c 2005-11-14 11:06:38.661262000 +0100 -+++ linux.dev/arch/mips/kernel/time.c 2005-11-15 15:21:17.890005500 +0100 -@@ -151,6 +151,20 @@ ++++ linux.dev/arch/mips/kernel/time.c 2005-11-15 20:02:50.059676750 +0100 +@@ -151,6 +151,27 @@ unsigned int (*mips_hpt_read)(void); void (*mips_hpt_init)(unsigned int); @@ -10,19 +10,26 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c + return timerhi; +} + ++static __u64 tscll_last = 0; ++ +extern __u64 get_tscll(void) +{ -+ __u32 c = read_c0_count(); + __u64 h = (__u64) timerhi; -+ h += (c < timerlo); ++ __u32 c = read_c0_count(); ++ + h <<= 32; + h += c; ++ ++ while (h < tscll_last) ++ h += (((__u64) 1) << 32); ++ ++ tscll_last = h; + return h; +} /* * timeofday services, for syscalls. -@@ -761,3 +775,5 @@ +@@ -761,3 +782,5 @@ EXPORT_SYMBOL(to_tm); EXPORT_SYMBOL(rtc_set_time); EXPORT_SYMBOL(rtc_get_time); diff --git a/openwrt/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch b/openwrt/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch index 69bf01a76..5b6431073 100644 --- a/openwrt/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch +++ b/openwrt/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch @@ -1,7 +1,7 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c --- linux.old/arch/mips/kernel/time.c 2005-11-14 11:06:38.661262000 +0100 -+++ linux.dev/arch/mips/kernel/time.c 2005-11-15 15:21:17.890005500 +0100 -@@ -151,6 +151,20 @@ ++++ linux.dev/arch/mips/kernel/time.c 2005-11-15 20:02:50.059676750 +0100 +@@ -151,6 +151,27 @@ unsigned int (*mips_hpt_read)(void); void (*mips_hpt_init)(unsigned int); @@ -10,19 +10,26 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c + return timerhi; +} + ++static __u64 tscll_last = 0; ++ +extern __u64 get_tscll(void) +{ -+ __u32 c = read_c0_count(); + __u64 h = (__u64) timerhi; -+ h += (c < timerlo); ++ __u32 c = read_c0_count(); ++ + h <<= 32; + h += c; ++ ++ while (h < tscll_last) ++ h += (((__u64) 1) << 32); ++ ++ tscll_last = h; + return h; +} /* * timeofday services, for syscalls. -@@ -761,3 +775,5 @@ +@@ -761,3 +782,5 @@ EXPORT_SYMBOL(to_tm); EXPORT_SYMBOL(rtc_set_time); EXPORT_SYMBOL(rtc_get_time); |