From 3ee2a19908f27b8fea8ff14ffa8b755585eb7b4a Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Fri, 17 Nov 2017 15:26:49 -0800 Subject: [PATCH] proc: : uninline name_to_int() Save ~360 bytes. add/remove: 1/0 grow/shrink: 0/4 up/down: 104/-463 (-359) function old new delta name_to_int - 104 +104 proc_pid_lookup 217 126 -91 proc_lookupfd_common 212 121 -91 proc_task_lookup 289 194 -95 __proc_create 588 402 -186 Link: http://lkml.kernel.org/r/20170912194850.GA17730@avx2 Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/Makefile | 1 + fs/proc/internal.h | 23 +---------------------- fs/proc/util.c | 23 +++++++++++++++++++++++ 3 files changed, 25 insertions(+), 22 deletions(-) create mode 100644 fs/proc/util.c diff --git a/fs/proc/Makefile b/fs/proc/Makefile index f7456c4e7d0f..ead487e80510 100644 --- a/fs/proc/Makefile +++ b/fs/proc/Makefile @@ -21,6 +21,7 @@ proc-y += loadavg.o proc-y += meminfo.o proc-y += stat.o proc-y += uptime.o +proc-y += util.o proc-y += version.o proc-y += softirqs.o proc-y += namespaces.o diff --git a/fs/proc/internal.h b/fs/proc/internal.h index a34195e92b20..9aad373cf11d 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -103,28 +103,7 @@ static inline struct task_struct *get_proc_task(struct inode *inode) void task_dump_owner(struct task_struct *task, mode_t mode, kuid_t *ruid, kgid_t *rgid); -static inline unsigned name_to_int(const struct qstr *qstr) -{ - const char *name = qstr->name; - int len = qstr->len; - unsigned n = 0; - - if (len > 1 && *name == '0') - goto out; - while (len-- > 0) { - unsigned c = *name++ - '0'; - if (c > 9) - goto out; - if (n >= (~0U-9)/10) - goto out; - n *= 10; - n += c; - } - return n; -out: - return ~0U; -} - +unsigned name_to_int(const struct qstr *qstr); /* * Offset of the first process in the /proc root directory.. */ diff --git a/fs/proc/util.c b/fs/proc/util.c new file mode 100644 index 000000000000..c29aa497394b --- /dev/null +++ b/fs/proc/util.c @@ -0,0 +1,23 @@ +#include + +unsigned name_to_int(const struct qstr *qstr) +{ + const char *name = qstr->name; + int len = qstr->len; + unsigned n = 0; + + if (len > 1 && *name == '0') + goto out; + while (len-- > 0) { + unsigned c = *name++ - '0'; + if (c > 9) + goto out; + if (n >= (~0U-9)/10) + goto out; + n *= 10; + n += c; + } + return n; +out: + return ~0U; +} -- 2.30.2