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trace: make argument 'mem' of trace_seq_putmem() const

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Impact: fix build warning

I passed a const value to trace_seq_putmem(), and I got compile warning.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Li Zefan 2009-03-27 10:21:00 +08:00 committed by Ingo Molnar
parent f285901bb2
commit b14b70a6a4
2 changed files with 6 additions and 5 deletions
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6
kernel/trace/trace_output.c
View File

@ -137,7 +137,7 @@ int trace_seq_putc(struct trace_seq *s, unsigned char c)
return 1;
}
int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len)
int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len)
{
if (len > ((PAGE_SIZE - 1) - s->len))
return 0;
@ -148,10 +148,10 @@ int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len)
return len;
}
int trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len)
int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, size_t len)
{
unsigned char hex[HEX_CHARS];
unsigned char *data = mem;
const unsigned char *data = mem;
int i, j;
#ifdef __BIG_ENDIAN

5
kernel/trace/trace_output.h
View File

@ -31,8 +31,9 @@ extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
size_t cnt);
extern int trace_seq_puts(struct trace_seq *s, const char *str);
extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
extern int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len);
extern int trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len);
extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len);
extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
size_t len);
extern void *trace_seq_reserve(struct trace_seq *s, size_t len);
extern int trace_seq_path(struct trace_seq *s, struct path *path);
extern int seq_print_userip_objs(const struct userstack_entry *entry,