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tools lib traceevent: Update printk formats when entered 

Instead of cropping off the '"' and '\n"' from a printk format every
time it is referenced, do it when it's added. This makes it easier to
reference a printk_map and should speed things up a little.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20131101215500.495619312@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-11-01 17:53:54 -04:00 committed by Arnaldo Carvalho de Melo
parent 1b372ca52a
commit 18900af829
2 changed files with 15 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
tools/lib/traceevent/event-parse.c
View File

@ -604,10 +604,11 @@ find_printk(struct pevent *pevent, unsigned long long addr)
* This registers a string by the address it was stored in the kernel.
* The @fmt passed in is duplicated.
*/
int pevent_register_print_string(struct pevent *pevent, char *fmt,
int pevent_register_print_string(struct pevent *pevent, const char *fmt,
unsigned long long addr)
{
struct printk_list *item = malloc(sizeof(*item));
char *p;
if (!item)
return -1;
@ -615,10 +616,21 @@ int pevent_register_print_string(struct pevent *pevent, char *fmt,
item->next = pevent->printklist;
item->addr = addr;
/* Strip off quotes and '\n' from the end */
if (fmt[0] == '"')
fmt++;
item->printk = strdup(fmt);
if (!item->printk)
goto out_free;
p = item->printk + strlen(item->printk) - 1;
if (*p == '"')
*p = 0;
p -= 2;
if (strcmp(p, "\\n") == 0)
*p = 0;
pevent->printklist = item;
pevent->printk_count++;
@ -3887,7 +3899,6 @@ get_bprint_format(void *data, int size __maybe_unused,
struct format_field *field;
struct printk_map *printk;
char *format;
char *p;
field = pevent->bprint_fmt_field;
@ -3909,20 +3920,8 @@ get_bprint_format(void *data, int size __maybe_unused,
return format;
}
p = printk->printk;
/* Remove any quotes. */
if (*p == '"')
p++;
if (asprintf(&format, "%s : %s", "%pf", p) < 0)
if (asprintf(&format, "%s : %s", "%pf", printk->printk) < 0)
return NULL;
/* remove ending quotes and new line since we will add one too */
p = format + strlen(format) - 1;
if (*p == '"')
*p = 0;
p -= 2;
if (strcmp(p, "\\n") == 0)
*p = 0;
return format;
}

2
tools/lib/traceevent/event-parse.h
View File

@ -533,7 +533,7 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
int pevent_register_function(struct pevent *pevent, char *name,
unsigned long long addr, char *mod);
int pevent_register_print_string(struct pevent *pevent, char *fmt,
int pevent_register_print_string(struct pevent *pevent, const char *fmt,
unsigned long long addr);
int pevent_pid_is_registered(struct pevent *pevent, int pid);