tracing: Do not limit the size of the number of CPU buffers
The tracing per_cpu buffers were limited to 999 CPUs for a mear savings in stack space of a char array. Up the array to 30 characters which is more than enough to hold a 64 bit number. Reported-by: Robin Holt <holt@sgi.com> Suggested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -3996,13 +3996,9 @@ static void tracing_init_debugfs_percpu(long cpu)
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{
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struct dentry *d_percpu = tracing_dentry_percpu();
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struct dentry *d_cpu;
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/* strlen(cpu) + MAX(log10(cpu)) + '\0' */
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char cpu_dir[7];
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char cpu_dir[30]; /* 30 characters should be more than enough */
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if (cpu > 999 || cpu < 0)
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return;
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sprintf(cpu_dir, "cpu%ld", cpu);
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snprintf(cpu_dir, 30, "cpu%ld", cpu);
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d_cpu = debugfs_create_dir(cpu_dir, d_percpu);
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if (!d_cpu) {
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pr_warning("Could not create debugfs '%s' entry\n", cpu_dir);
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