diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-19 13:15:24 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-19 13:15:24 -0800 |
commit | 88a57667f2990f00b019d46c8426441c9e516d51 (patch) | |
tree | 392f5dcb9724e688aa307e2ed2cc8ee13e66f570 /tools/perf/util/util.c | |
parent | 34b85e3574424beb30e4cd163e6da2e2282d2683 (diff) | |
parent | ac931f87a647ca156f65a4c00e7297165e4fa2d8 (diff) | |
download | linux-88a57667f2990f00b019d46c8426441c9e516d51.tar.gz linux-88a57667f2990f00b019d46c8426441c9e516d51.tar.bz2 linux-88a57667f2990f00b019d46c8426441c9e516d51.zip |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes and cleanups from Ingo Molnar:
"A kernel fix plus mostly tooling fixes, but also some tooling
restructuring and cleanups"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
perf: Fix building warning on ARM 32
perf symbols: Fix use after free in filename__read_build_id
perf evlist: Use roundup_pow_of_two
tools: Adopt roundup_pow_of_two
perf tools: Make the mmap length autotuning more robust
tools: Adopt rounddown_pow_of_two and deps
tools: Adopt fls_long and deps
tools: Move bitops.h from tools/perf/util to tools/
tools: Introduce asm-generic/bitops.h
tools lib: Move asm-generic/bitops/find.h code to tools/include and tools/lib
tools: Whitespace prep patches for moving bitops.h
tools: Move code originally from asm-generic/atomic.h into tools/include/asm-generic/
tools: Move code originally from linux/log2.h to tools/include/linux/
tools: Move __ffs implementation to tools/include/asm-generic/bitops/__ffs.h
perf evlist: Do not use hard coded value for a mmap_pages default
perf trace: Let the perf_evlist__mmap autosize the number of pages to use
perf evlist: Improve the strerror_mmap method
perf evlist: Clarify sterror_mmap variable names
perf evlist: Fixup brown paper bag on "hint" for --mmap-pages cmdline arg
perf trace: Provide a better explanation when mmap fails
...
Diffstat (limited to 'tools/perf/util/util.c')
-rw-r--r-- | tools/perf/util/util.c | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index d5eab3f3323f..b86744f29eef 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -442,23 +442,6 @@ unsigned long parse_tag_value(const char *str, struct parse_tag *tags) return (unsigned long) -1; } -int filename__read_int(const char *filename, int *value) -{ - char line[64]; - int fd = open(filename, O_RDONLY), err = -1; - - if (fd < 0) - return -1; - - if (read(fd, line, sizeof(line)) > 0) { - *value = atoi(line); - err = 0; - } - - close(fd); - return err; -} - int filename__read_str(const char *filename, char **buf, size_t *sizep) { size_t size = 0, alloc_size = 0; @@ -523,16 +506,9 @@ const char *get_filename_for_perf_kvm(void) int perf_event_paranoid(void) { - char path[PATH_MAX]; - const char *procfs = procfs__mountpoint(); int value; - if (!procfs) - return INT_MAX; - - scnprintf(path, PATH_MAX, "%s/sys/kernel/perf_event_paranoid", procfs); - - if (filename__read_int(path, &value)) + if (sysctl__read_int("kernel/perf_event_paranoid", &value)) return INT_MAX; return value; |