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tracing: Make synth_event trace functions endian-correct
synth_event_trace(), synth_event_trace_array() and __synth_event_add_val() write directly into the trace buffer and need to take endianness into account, like trace_event_raw_event_synth() does. Link: http://lkml.kernel.org/r/2011354355e405af9c9d28abba430d1f5ff7771a.1581720155.git.zanussi@kernel.org Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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@ -1891,7 +1891,25 @@ int synth_event_trace(struct trace_event_file *file, unsigned int n_vals, ...)
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strscpy(str_field, str_val, STR_VAR_LEN_MAX);
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n_u64 += STR_VAR_LEN_MAX / sizeof(u64);
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} else {
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state.entry->fields[n_u64] = val;
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struct synth_field *field = state.event->fields[i];
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switch (field->size) {
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case 1:
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*(u8 *)&state.entry->fields[n_u64] = (u8)val;
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break;
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case 2:
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*(u16 *)&state.entry->fields[n_u64] = (u16)val;
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break;
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case 4:
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*(u32 *)&state.entry->fields[n_u64] = (u32)val;
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break;
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default:
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state.entry->fields[n_u64] = val;
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break;
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}
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n_u64++;
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}
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}
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@ -1943,7 +1961,26 @@ int synth_event_trace_array(struct trace_event_file *file, u64 *vals,
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strscpy(str_field, str_val, STR_VAR_LEN_MAX);
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n_u64 += STR_VAR_LEN_MAX / sizeof(u64);
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} else {
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state.entry->fields[n_u64] = vals[i];
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struct synth_field *field = state.event->fields[i];
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u64 val = vals[i];
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switch (field->size) {
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case 1:
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*(u8 *)&state.entry->fields[n_u64] = (u8)val;
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break;
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case 2:
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*(u16 *)&state.entry->fields[n_u64] = (u16)val;
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break;
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case 4:
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*(u32 *)&state.entry->fields[n_u64] = (u32)val;
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break;
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default:
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state.entry->fields[n_u64] = val;
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break;
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}
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n_u64++;
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}
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}
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@ -2062,8 +2099,25 @@ static int __synth_event_add_val(const char *field_name, u64 val,
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str_field = (char *)&entry->fields[field->offset];
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strscpy(str_field, str_val, STR_VAR_LEN_MAX);
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} else
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entry->fields[field->offset] = val;
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} else {
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switch (field->size) {
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case 1:
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*(u8 *)&trace_state->entry->fields[field->offset] = (u8)val;
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break;
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case 2:
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*(u16 *)&trace_state->entry->fields[field->offset] = (u16)val;
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break;
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case 4:
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*(u32 *)&trace_state->entry->fields[field->offset] = (u32)val;
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break;
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default:
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trace_state->entry->fields[field->offset] = val;
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break;
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}
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}
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out:
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return ret;
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}
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