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hw/xen: Split out xen_pv_output_msg 

Do not replicate the individual logging statements.
Use qemu_log_trylock/unlock instead of qemu_log directly.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-9-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-04-17 11:29:48 -07:00
parent c60f599bcb
commit 6fef222971
1 changed files with 24 additions and 20 deletions
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44
hw/xen/xen_pvdev.c
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@ -196,34 +196,38 @@ const char *xenbus_strstate(enum xenbus_state state)
* 2 == noisy debug messages (logfile only).
* 3 == will flood your log (logfile only).
*/
static void xen_pv_output_msg(struct XenLegacyDevice *xendev,
FILE *f, const char *fmt, va_list args)
{
if (xendev) {
fprintf(f, "xen be: %s: ", xendev->name);
} else {
fprintf(f, "xen be core: ");
}
vfprintf(f, fmt, args);
}
void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
const char *fmt, ...)
{
FILE *logfile;
va_list args;
if (xendev) {
if (msg_level > xendev->debug) {
return;
}
qemu_log("xen be: %s: ", xendev->name);
if (msg_level == 0) {
fprintf(stderr, "xen be: %s: ", xendev->name);
}
} else {
if (msg_level > debug) {
return;
}
qemu_log("xen be core: ");
if (msg_level == 0) {
fprintf(stderr, "xen be core: ");
}
if (msg_level > (xendev ? xendev->debug : debug)) {
return;
}
va_start(args, fmt);
qemu_log_vprintf(fmt, args);
va_end(args);
logfile = qemu_log_trylock();
if (logfile) {
va_start(args, fmt);
xen_pv_output_msg(xendev, logfile, fmt, args);
va_end(args);
qemu_log_unlock(logfile);
}
if (msg_level == 0) {
va_start(args, fmt);
vfprintf(stderr, fmt, args);
xen_pv_output_msg(xendev, stderr, fmt, args);
va_end(args);
}
qemu_log_flush();