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authorThomas Gleixner <tglx@linutronix.de>2014-06-22 12:06:40 +0200
committerThomas Gleixner <tglx@linutronix.de>2014-06-23 11:22:35 +0200
commit5cee964597260237dd2cabb3ec22bba0da24b25d (patch)
treef548efb4181a4cffb026adf43178e65330533e87 /kernel/timeconst.bc
parent58394271c610e9c65dd0165a1c1f6dec75dc5f3e (diff)
downloadop-kernel-dev-5cee964597260237dd2cabb3ec22bba0da24b25d.zip
op-kernel-dev-5cee964597260237dd2cabb3ec22bba0da24b25d.tar.gz
time/timers: Move all time(r) related files into kernel/time
Except for Kconfig.HZ. That needs a separate treatment. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/timeconst.bc')
-rw-r--r--kernel/timeconst.bc108
1 files changed, 0 insertions, 108 deletions
diff --git a/kernel/timeconst.bc b/kernel/timeconst.bc
deleted file mode 100644
index 511bdf2..0000000
--- a/kernel/timeconst.bc
+++ /dev/null
@@ -1,108 +0,0 @@
-scale=0
-
-define gcd(a,b) {
- auto t;
- while (b) {
- t = b;
- b = a % b;
- a = t;
- }
- return a;
-}
-
-/* Division by reciprocal multiplication. */
-define fmul(b,n,d) {
- return (2^b*n+d-1)/d;
-}
-
-/* Adjustment factor when a ceiling value is used. Use as:
- (imul * n) + (fmulxx * n + fadjxx) >> xx) */
-define fadj(b,n,d) {
- auto v;
- d = d/gcd(n,d);
- v = 2^b*(d-1)/d;
- return v;
-}
-
-/* Compute the appropriate mul/adj values as well as a shift count,
- which brings the mul value into the range 2^b-1 <= x < 2^b. Such
- a shift value will be correct in the signed integer range and off
- by at most one in the upper half of the unsigned range. */
-define fmuls(b,n,d) {
- auto s, m;
- for (s = 0; 1; s++) {
- m = fmul(s,n,d);
- if (m >= 2^(b-1))
- return s;
- }
- return 0;
-}
-
-define timeconst(hz) {
- print "/* Automatically generated by kernel/timeconst.bc */\n"
- print "/* Time conversion constants for HZ == ", hz, " */\n"
- print "\n"
-
- print "#ifndef KERNEL_TIMECONST_H\n"
- print "#define KERNEL_TIMECONST_H\n\n"
-
- print "#include <linux/param.h>\n"
- print "#include <linux/types.h>\n\n"
-
- print "#if HZ != ", hz, "\n"
- print "#error \qkernel/timeconst.h has the wrong HZ value!\q\n"
- print "#endif\n\n"
-
- if (hz < 2) {
- print "#error Totally bogus HZ value!\n"
- } else {
- s=fmuls(32,1000,hz)
- obase=16
- print "#define HZ_TO_MSEC_MUL32\tU64_C(0x", fmul(s,1000,hz), ")\n"
- print "#define HZ_TO_MSEC_ADJ32\tU64_C(0x", fadj(s,1000,hz), ")\n"
- obase=10
- print "#define HZ_TO_MSEC_SHR32\t", s, "\n"
-
- s=fmuls(32,hz,1000)
- obase=16
- print "#define MSEC_TO_HZ_MUL32\tU64_C(0x", fmul(s,hz,1000), ")\n"
- print "#define MSEC_TO_HZ_ADJ32\tU64_C(0x", fadj(s,hz,1000), ")\n"
- obase=10
- print "#define MSEC_TO_HZ_SHR32\t", s, "\n"
-
- obase=10
- cd=gcd(hz,1000)
- print "#define HZ_TO_MSEC_NUM\t\t", 1000/cd, "\n"
- print "#define HZ_TO_MSEC_DEN\t\t", hz/cd, "\n"
- print "#define MSEC_TO_HZ_NUM\t\t", hz/cd, "\n"
- print "#define MSEC_TO_HZ_DEN\t\t", 1000/cd, "\n"
- print "\n"
-
- s=fmuls(32,1000000,hz)
- obase=16
- print "#define HZ_TO_USEC_MUL32\tU64_C(0x", fmul(s,1000000,hz), ")\n"
- print "#define HZ_TO_USEC_ADJ32\tU64_C(0x", fadj(s,1000000,hz), ")\n"
- obase=10
- print "#define HZ_TO_USEC_SHR32\t", s, "\n"
-
- s=fmuls(32,hz,1000000)
- obase=16
- print "#define USEC_TO_HZ_MUL32\tU64_C(0x", fmul(s,hz,1000000), ")\n"
- print "#define USEC_TO_HZ_ADJ32\tU64_C(0x", fadj(s,hz,1000000), ")\n"
- obase=10
- print "#define USEC_TO_HZ_SHR32\t", s, "\n"
-
- obase=10
- cd=gcd(hz,1000000)
- print "#define HZ_TO_USEC_NUM\t\t", 1000000/cd, "\n"
- print "#define HZ_TO_USEC_DEN\t\t", hz/cd, "\n"
- print "#define USEC_TO_HZ_NUM\t\t", hz/cd, "\n"
- print "#define USEC_TO_HZ_DEN\t\t", 1000000/cd, "\n"
- print "\n"
-
- print "#endif /* KERNEL_TIMECONST_H */\n"
- }
- halt
-}
-
-timeconst(hz)
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