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tracing/events: Add 'signed' field to format files

Ver a proveniência 
The sign info used for filters in the kernel is also useful to
applications that process the trace stream.  Add it to the format
files and make it available to userspace.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: rostedt@goodmis.org
Cc: lizf@cn.fujitsu.com
Cc: hch@infradead.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1254809398-8078-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Este cometimento está contido em:
Tom Zanussi
2009-10-06 01:09:50 -05:00
cometido por Ingo Molnar
ascendente d9b2002c40
cometimento 26a50744b2
7 ficheiros modificados com 82 adições e 42 eliminações
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20
kernel/trace/trace_syscalls.c
Ver ficheiro

@@ -103,7 +103,8 @@ extern char *__bad_type_size(void);
#define SYSCALL_FIELD(type, name) \
sizeof(type) != sizeof(trace.name) ? \
__bad_type_size() : \
#type, #name, offsetof(typeof(trace), name), sizeof(trace.name)
#type, #name, offsetof(typeof(trace), name), \
sizeof(trace.name), is_signed_type(type)
int syscall_enter_format(struct ftrace_event_call *call, struct trace_seq *s)
{
@@ -120,7 +121,8 @@ int syscall_enter_format(struct ftrace_event_call *call, struct trace_seq *s)
if (!entry)
return 0;
ret = trace_seq_printf(s, "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n",
ret = trace_seq_printf(s, "\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
"\tsigned:%u;\n",
SYSCALL_FIELD(int, nr));
if (!ret)
return 0;
@@ -130,8 +132,10 @@ int syscall_enter_format(struct ftrace_event_call *call, struct trace_seq *s)
entry->args[i]);
if (!ret)
return 0;
ret = trace_seq_printf(s, "\toffset:%d;\tsize:%zu;\n", offset,
sizeof(unsigned long));
ret = trace_seq_printf(s, "\toffset:%d;\tsize:%zu;"
"\tsigned:%u;\n", offset,
sizeof(unsigned long),
is_signed_type(unsigned long));
if (!ret)
return 0;
offset += sizeof(unsigned long);
@@ -163,8 +167,10 @@ int syscall_exit_format(struct ftrace_event_call *call, struct trace_seq *s)
struct syscall_trace_exit trace;
ret = trace_seq_printf(s,
"\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
"\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n",
"\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
"\tsigned:%u;\n"
"\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
"\tsigned:%u;\n",
SYSCALL_FIELD(int, nr),
SYSCALL_FIELD(long, ret));
if (!ret)
@@ -212,7 +218,7 @@ int syscall_exit_define_fields(struct ftrace_event_call *call)
if (ret)
return ret;
ret = trace_define_field(call, SYSCALL_FIELD(long, ret), 0,
ret = trace_define_field(call, SYSCALL_FIELD(long, ret),
FILTER_OTHER);
return ret;