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util/log: Rename qemu_log_lock to qemu_log_trylock

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This function can fail, which makes it more like ftrylockfile
or pthread_mutex_trylock than flockfile or pthread_mutex_lock,
so rename it.

To closer match the other trylock functions, release rcu_read_lock
along the failure path, so that qemu_log_unlock need not be called
on failure.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-8-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-04-17 11:29:47 -07:00
parent c59fe6e536
commit c60f599bcb
12 changed files with 18 additions and 16 deletions
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2
net/can/can_socketcan.c
View file

@ -76,7 +76,7 @@ QEMU_BUILD_BUG_ON(offsetof(qemu_can_frame, data)
static void can_host_socketcan_display_msg(struct qemu_can_frame *msg)
{
int i;
FILE *logfile = qemu_log_lock();
FILE *logfile = qemu_log_trylock();
qemu_log("[cansocketcan]: %03X [%01d] %s %s",
msg->can_id & QEMU_CAN_EFF_MASK,
msg->can_dlc,