xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tracing/kprobes: Remove '$ra' special variable

Browse Source 
Remove '$ra' (return address) because it is already shown at the head of
each entry.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Frank Ch. Eigler <fche@redhat.com>
LKML-Reference: <20091007222748.1684.12711.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Masami Hiramatsu
2009-10-07 18:27:48 -04:00
committed by Frederic Weisbecker
parent 405b2651e4
commit 99329c44f2
2 changed files with 6 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
kernel/trace/trace_kprobe.c
View File

@@ -85,11 +85,6 @@ static __kprobes unsigned long fetch_retvalue(struct pt_regs *regs,
return regs_return_value(regs);
}
static __kprobes unsigned long fetch_ip(struct pt_regs *regs, void *dummy)
{
return instruction_pointer(regs);
}
static __kprobes unsigned long fetch_stack_address(struct pt_regs *regs,
void *dummy)
{
@@ -234,8 +229,6 @@ static int probe_arg_string(char *buf, size_t n, struct fetch_func *ff)
ret = snprintf(buf, n, "@%s%+ld", sc->symbol, sc->offset);
} else if (ff->func == fetch_retvalue)
ret = snprintf(buf, n, "$rv");
else if (ff->func == fetch_ip)
ret = snprintf(buf, n, "$ra");
else if (ff->func == fetch_stack_address)
ret = snprintf(buf, n, "$sa");
else if (ff->func == fetch_indirect) {
@@ -448,9 +441,6 @@ static int parse_probe_vars(char *arg, struct fetch_func *ff, int is_return)
if (is_return && arg[1] == 'v') {
ff->func = fetch_retvalue;
ff->data = NULL;
} else if (is_return && arg[1] == 'a') {
ff->func = fetch_ip;
ff->data = NULL;
} else
ret = -EINVAL;
break;
@@ -560,7 +550,6 @@ static int create_trace_probe(int argc, char **argv)
* Fetch args:
* $aN : fetch Nth of function argument. (N:0-)
* $rv : fetch return value
* $ra : fetch return address
* $sa : fetch stack address
* $sN : fetch Nth of stack (N:0-)
* @ADDR : fetch memory at ADDR (ADDR should be in kernel)