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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-13 13:28:42 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-13 13:28:42 +0400
commit77c688ac87183537ed0fb84ec2cb8fa8ec97c458 (patch)
treed18e117e05c0d71463823536165ddd9ad75b6bc5 /tools
parent5e40d331bd72447197f26525f21711c4a265b6a6 (diff)
parenta457606a6f81cfddfc9da1ef2a8bf2c65a8eb35e (diff)
downloadlinux-77c688ac87183537ed0fb84ec2cb8fa8ec97c458.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro: "The big thing in this pile is Eric's unmount-on-rmdir series; we finally have everything we need for that. The final piece of prereqs is delayed mntput() - now filesystem shutdown always happens on shallow stack. Other than that, we have several new primitives for iov_iter (Matt Wilcox, culled from his XIP-related series) pushing the conversion to ->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c cleanups and fixes (including the external name refcounting, which gives consistent behaviour of d_move() wrt procfs symlinks for long and short names alike) and assorted cleanups and fixes all over the place. This is just the first pile; there's a lot of stuff from various people that ought to go in this window. Starting with unionmount/overlayfs mess... ;-/" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits) fs/file_table.c: Update alloc_file() comment vfs: Deduplicate code shared by xattr system calls operating on paths reiserfs: remove pointless forward declaration of struct nameidata don't need that forward declaration of struct nameidata in dcache.h anymore take dname_external() into fs/dcache.c let path_init() failures treated the same way as subsequent link_path_walk() fix misuses of f_count() in ppp and netlink ncpfs: use list_for_each_entry() for d_subdirs walk vfs: move getname() from callers to do_mount() gfs2_atomic_open(): skip lookups on hashed dentry [infiniband] remove pointless assignments gadgetfs: saner API for gadgetfs_create_file() f_fs: saner API for ffs_sb_create_file() jfs: don't hash direct inode [s390] remove pointless assignment of ->f_op in vmlogrdr ->open() ecryptfs: ->f_op is never NULL android: ->f_op is never NULL nouveau: __iomem misannotations missing annotation in fs/file.c fs: namespace: suppress 'may be used uninitialized' warnings ...
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/string.c90
1 files changed, 30 insertions, 60 deletions
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index 2553e5b55b89..d87767f76903 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -9,78 +9,48 @@
*/
s64 perf_atoll(const char *str)
{
- unsigned int i;
- s64 length = -1, unit = 1;
+ s64 length;
+ char *p;
+ char c;
if (!isdigit(str[0]))
goto out_err;
- for (i = 1; i < strlen(str); i++) {
- switch (str[i]) {
- case 'B':
- case 'b':
- break;
- case 'K':
- if (str[i + 1] != 'B')
- goto out_err;
- else
- goto kilo;
- case 'k':
- if (str[i + 1] != 'b')
- goto out_err;
-kilo:
- unit = K;
- break;
- case 'M':
- if (str[i + 1] != 'B')
- goto out_err;
- else
- goto mega;
- case 'm':
- if (str[i + 1] != 'b')
+ length = strtoll(str, &p, 10);
+ switch (c = *p++) {
+ case 'b': case 'B':
+ if (*p)
goto out_err;
-mega:
- unit = K * K;
+ case '\0':
+ return length;
+ default:
+ goto out_err;
+ /* two-letter suffices */
+ case 'k': case 'K':
+ length <<= 10;
break;
- case 'G':
- if (str[i + 1] != 'B')
- goto out_err;
- else
- goto giga;
- case 'g':
- if (str[i + 1] != 'b')
- goto out_err;
-giga:
- unit = K * K * K;
+ case 'm': case 'M':
+ length <<= 20;
break;
- case 'T':
- if (str[i + 1] != 'B')
- goto out_err;
- else
- goto tera;
- case 't':
- if (str[i + 1] != 'b')
- goto out_err;
-tera:
- unit = K * K * K * K;
+ case 'g': case 'G':
+ length <<= 30;
break;
- case '\0': /* only specified figures */
- unit = 1;
+ case 't': case 'T':
+ length <<= 40;
break;
- default:
- if (!isdigit(str[i]))
- goto out_err;
- break;
- }
}
-
- length = atoll(str) * unit;
- goto out;
+ /* we want the cases to match */
+ if (islower(c)) {
+ if (strcmp(p, "b") != 0)
+ goto out_err;
+ } else {
+ if (strcmp(p, "B") != 0)
+ goto out_err;
+ }
+ return length;
out_err:
- length = -1;
-out:
- return length;
+ return -1;
}
/*