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log: optimize spdk_log() when logging is disabled

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If the log level of the output log is higher than
the process's log level, the system does not output
it, so we needn't generate the formatting logs.

Change-Id: I36be0e6807ed575fcbf1d0ae01f064a6ca2c4539
Signed-off-by: Huiming Xie <xiehuiming@huawei.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/462790
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
x00267701 2019-07-22 10:39:53 -04:00 committed by Changpeng Liu
parent c0d4f7145e
commit a50246fb64
1 changed files with 20 additions and 16 deletions
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14
lib/log/log.c
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@ -116,6 +116,15 @@ spdk_log(enum spdk_log_level level, const char *file, const int line, const char
char buf[MAX_TMPBUF];
va_list ap;
if (g_log) {
g_log(level, file, line, func, format);
return;
}
if (level > g_spdk_log_print_level && level > g_spdk_log_level) {
return;
}
switch (level) {
case SPDK_LOG_ERROR:
severity = LOG_ERR;
@ -134,10 +143,6 @@ spdk_log(enum spdk_log_level level, const char *file, const int line, const char
return;
}
if (g_log) {
g_log(level, file, line, func, format);
} else {
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
@ -152,7 +157,6 @@ spdk_log(enum spdk_log_level level, const char *file, const int line, const char
}
va_end(ap);
}
}
static void