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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3b00ea9386
Add sysfs__write_int() to ease up writing int to sysfs. New interface is: int sysfs__write_int(const char *entry, int value); Also, introducing filename__write_int() which is useful for new helpers to write sysctl values. Signed-off-by: Kan Liang <Kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Elliott <elliott@hpe.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1495825538-5230-2-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef __API_FS__
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#define __API_FS__
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#include <stdbool.h>
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#include <unistd.h>
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/*
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* On most systems <limits.h> would have given us this, but not on some systems
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* (e.g. GNU/Hurd).
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*/
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#ifndef PATH_MAX
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#define PATH_MAX 4096
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#endif
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#define FS(name) \
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const char *name##__mountpoint(void); \
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const char *name##__mount(void); \
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bool name##__configured(void); \
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FS(sysfs)
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FS(procfs)
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FS(debugfs)
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FS(tracefs)
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FS(hugetlbfs)
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FS(bpf_fs)
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#undef FS
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int filename__read_int(const char *filename, int *value);
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int filename__read_ull(const char *filename, unsigned long long *value);
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int filename__read_str(const char *filename, char **buf, size_t *sizep);
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int filename__write_int(const char *filename, int value);
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int procfs__read_str(const char *entry, char **buf, size_t *sizep);
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int sysctl__read_int(const char *sysctl, int *value);
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int sysfs__read_int(const char *entry, int *value);
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int sysfs__read_ull(const char *entry, unsigned long long *value);
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int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
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int sysfs__read_bool(const char *entry, bool *value);
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int sysfs__write_int(const char *entry, int value);
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#endif /* __API_FS__ */
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