45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
+++ ./utils/kernel.c 2019-08-26 05:01:08.580055352 +0300
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@@ -29,6 +29,42 @@
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#define TRACING_DIR "/sys/kernel/debug/tracing"
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+int strverscmp(const char *l0, const char *r0)
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+{
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+ const unsigned char *l = (const void *)l0;
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+ const unsigned char *r = (const void *)r0;
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+ size_t i, dp, j;
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+ int z = 1;
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+
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+ /* Find maximal matching prefix and track its maximal digit
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+ * suffix and whether those digits are all zeros. */
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+ for (dp=i=0; l[i]==r[i]; i++) {
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+ int c = l[i];
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+ if (!c) return 0;
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+ if (!isdigit(c)) dp=i+1, z=1;
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+ else if (c!='0') z=0;
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+ }
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+
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+ if (l[dp]!='0' && r[dp]!='0') {
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+ /* If we're not looking at a digit sequence that began
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+ * with a zero, longest digit string is greater. */
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+ for (j=i; isdigit(l[j]); j++)
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+ if (!isdigit(r[j])) return 1;
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+ if (isdigit(r[j])) return -1;
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+ } else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) {
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+ /* Otherwise, if common prefix of digit sequence is
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+ * all zeros, digits order less than non-digits. */
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+ return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0');
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+ }
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+
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+ return l[i] - r[i];
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+}
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+
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+static int versionsort(const struct dirent **a, const struct dirent **b)
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+{
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+ return strverscmp((*a)->d_name, (*b)->d_name);
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+}
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+
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static bool kernel_tracing_enabled;
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/* tree of executed kernel functions */
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