linux/tools/lib/api/fs/fs.c, branch v4.8

tools lib api fs: Use base 0 in filename__read_ull

2016-07-15T16:38:05Z

By using 0 for base, the strtoull() detects the base automatically (see 'man strtoull'). ATM we have just one user of this function, the cpu__get_max_freq function reading the "cpuinfo_max_freq" sysfs file. It should not get affected by this change. Committer note: This change seems motivated by this discussion: "[PATCH] [RFC V1]s390/perf: fix 'start' address of module's map" http://lkml.kernel.org/r/20160711120155.GA29929@krava I.e. this patches paves the way for filename__read_ull() to be used in a S/390 related fix. Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Songshan Gong Link: http://lkml.kernel.org/r/1468567797-27564-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Add helper to read string from procfs file

2016-04-26T16:15:00Z

To read things like /proc/self/comm. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-ztpkbmseidt0hq2psr46o0h9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Add sysfs__read_str function

2016-02-16T20:12:57Z

Adding sysfs__read_str function to ease up reading string files from sysfs. New interface is: int sysfs__read_str(const char *entry, char **buf, size_t *sizep); Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1455465826-8426-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Adopt filename__read_str from perf

2016-02-16T20:12:56Z

We already moved similar functions in here, also it'll be useful for sysfs__read_str addition in following patch. Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1455465826-8426-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: No need to use PATH_MAX + 1

2015-10-05T19:12:09Z

Because there's no point, PATH_MAX is big enough. Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Don Zickus Cc: Kan Liang Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1444068369-20978-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Introduce sysfs__read_{int,ull}()

2015-09-14T15:50:25Z

To read either an int or an unsigned long long value from the given file. E.g.: $ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq 3200000 $ ./sysfs__read_ull devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq=3200000 $ Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Cc: Stephane Eranian Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-4a12m4d5k8m4qgc1vguocvei@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Replace debugfs/tracefs objects interface with fs.c

2015-09-14T15:50:15Z

Switching to the fs.c related filesystem framework. Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Raphael Beamonte Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1441180605-24737-14-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Add FSTYPE__configured() method

2015-09-04T15:01:01Z

Add FSTYPE__configured() (where FSTYPE is one of sysfs, procfs, debugfs, tracefs) interface that returns bool state of the filesystem mount: true - mounted, false - not mounted It will not try to mount the filesystem. Signed-off-by: Jiri Olsa Cc: Raphael Beamonte Cc: David Ahern Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1441180605-24737-13-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Add FSTYPE__mount() method

2015-09-04T15:01:00Z

Adding FSTYPE__mount (where FSTYPE is, as of now, one of sysfs, procfs, debugfs, tracefs) method that tries to mount the filesystem in case no mount of FSTYPE is found. Signed-off-by: Jiri Olsa Cc: Raphael Beamonte Cc: David Ahern Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1441180605-24737-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api fs: Add tracefs into fs.c object

2015-09-04T15:01:00Z

Adding tracefs support into fs.c framework. It'll replace the tracefs object functionality in following patches. Signed-off-by: Jiri Olsa Cc: Raphael Beamonte Cc: David Ahern Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1441180605-24737-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo