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Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/gi…
…t/mmarek/kbuild Pull kbuild changes from Michal Marek: - Alias generation in modpost is cross-compile safe. - kernel/timeconst.h is now generated using a bc script instead of perl. - scripts/link-vmlinux.sh now works with an alternative $KCONFIG_CONFIG. - destination-y for exported headers is supported in Kbuild files again. - depmod is called with -P $CONFIG_SYMBOL_PREFIX on architectures that need it. - CONFIG_DEBUG_INFO_REDUCED disables var-tracking - scripts/setlocalversion works with too much translated locales ;) * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Fix reading of .config in link-vmlinux.sh kbuild: Unset language specific variables in setlocalversion script Kbuild: Disable var tracking with CONFIG_DEBUG_INFO_REDUCED depmod: pass -P $CONFIG_SYMBOL_PREFIX kbuild: Fix destination-y for installed headers scripts/link-vmlinux.sh: source variables from KCONFIG_CONFIG kernel: Replace timeconst.pl with a bc script mod/file2alias: make modalias generation safe for cross compiling
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| scale=0 | ||
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| 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; | ||
| } | ||
|
|
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| /* 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; | ||
| } | ||
|
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| /* 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; | ||
| } | ||
|
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| define timeconst(hz) { | ||
| print "/* Automatically generated by kernel/timeconst.bc */\n" | ||
| print "/* Time conversion constants for HZ == ", hz, " */\n" | ||
| print "\n" | ||
|
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| print "#ifndef KERNEL_TIMECONST_H\n" | ||
| print "#define KERNEL_TIMECONST_H\n\n" | ||
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| print "#include <linux/param.h>\n" | ||
| print "#include <linux/types.h>\n\n" | ||
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| print "#if HZ != ", hz, "\n" | ||
| print "#error \qkernel/timeconst.h has the wrong HZ value!\q\n" | ||
| print "#endif\n\n" | ||
|
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| 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" | ||
|
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| 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" | ||
|
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| 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" | ||
|
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| 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" | ||
|
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| 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" | ||
|
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| 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" | ||
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| print "#endif /* KERNEL_TIMECONST_H */\n" | ||
| } | ||
| halt | ||
| } | ||
|
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| timeconst(hz) |
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