Root/target/linux/generic-2.4/patches/114-sched_use_tsc.patch

1--- a/arch/mips/kernel/time.c
2+++ b/arch/mips/kernel/time.c
3@@ -151,6 +151,27 @@ void (*mips_timer_ack)(void);
4 unsigned int (*mips_hpt_read)(void);
5 void (*mips_hpt_init)(unsigned int);
6 
7+extern __u32 get_htscl(void)
8+{
9+ return timerhi;
10+}
11+
12+static __u64 tscll_last = 0;
13+
14+extern __u64 get_tscll(void)
15+{
16+ __u64 h = (__u64) timerhi;
17+ __u32 c = read_c0_count();
18+
19+ h <<= 32;
20+ h += c;
21+
22+ while (h < tscll_last)
23+ h += (((__u64) 1) << 32);
24+
25+ tscll_last = h;
26+ return h;
27+}
28 
29 /*
30  * timeofday services, for syscalls.
31@@ -761,3 +782,5 @@ EXPORT_SYMBOL(rtc_lock);
32 EXPORT_SYMBOL(to_tm);
33 EXPORT_SYMBOL(rtc_set_time);
34 EXPORT_SYMBOL(rtc_get_time);
35+EXPORT_SYMBOL(get_htscl);
36+EXPORT_SYMBOL(get_tscll);
37--- a/include/asm-mips/timex.h
38+++ b/include/asm-mips/timex.h
39@@ -31,6 +31,19 @@ static inline cycles_t get_cycles (void)
40     return read_c0_count();
41 }
42 
43+extern __u32 get_htscl(void);
44+extern __u64 get_tscll(void);
45+
46+#define rdtsc(low, high) \
47+ high = get_htscl(); \
48+ low = read_c0_count();
49+
50+#define rdtscl(low) \
51+ low = read_c0_count();
52+
53+#define rdtscll(val) \
54+ val = get_tscll();
55+
56 #define vxtime_lock() do {} while (0)
57 #define vxtime_unlock() do {} while (0)
58 
59--- a/include/net/pkt_sched.h
60+++ b/include/net/pkt_sched.h
61@@ -5,7 +5,11 @@
62 #define PSCHED_JIFFIES 2
63 #define PSCHED_CPU 3
64 
65+#ifdef __mips__
66+#define PSCHED_CLOCK_SOURCE PSCHED_CPU
67+#else
68 #define PSCHED_CLOCK_SOURCE PSCHED_JIFFIES
69+#endif
70 
71 #include <linux/config.h>
72 #include <linux/types.h>
73@@ -261,7 +265,7 @@ extern int psched_clock_scale;
74 #define PSCHED_US2JIFFIE(delay) (((delay)+psched_clock_per_hz-1)/psched_clock_per_hz)
75 #define PSCHED_JIFFIE2US(delay) ((delay)*psched_clock_per_hz)
76 
77-#ifdef CONFIG_X86_TSC
78+#if defined(CONFIG_X86_TSC) || defined(__mips__)
79 
80 #define PSCHED_GET_TIME(stamp) \
81 ({ u64 __cur; \
82

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