tools lib api fs: Add sysfs__read_xll function
Adding sysfs__read_xll function to be able to read sysfs files with hex numbers in, which do not have 0x prefix. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180206181813.10943-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -432,7 +432,8 @@ int procfs__read_str(const char *entry, char **buf, size_t *sizep)
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return filename__read_str(path, buf, sizep);
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}
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int sysfs__read_ull(const char *entry, unsigned long long *value)
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static int sysfs__read_ull_base(const char *entry,
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unsigned long long *value, int base)
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{
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char path[PATH_MAX];
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const char *sysfs = sysfs__mountpoint();
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@ -442,7 +443,17 @@ int sysfs__read_ull(const char *entry, unsigned long long *value)
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snprintf(path, sizeof(path), "%s/%s", sysfs, entry);
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return filename__read_ull(path, value);
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return filename__read_ull_base(path, value, base);
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}
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int sysfs__read_xll(const char *entry, unsigned long long *value)
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{
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return sysfs__read_ull_base(entry, value, 16);
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}
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int sysfs__read_ull(const char *entry, unsigned long long *value)
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{
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return sysfs__read_ull_base(entry, value, 0);
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}
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int sysfs__read_int(const char *entry, int *value)
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@ -40,6 +40,7 @@ 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_xll(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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