[dpdk-dev] [PATCH] log: respect rte_openlog_stream calls before rte_eal_init
John Ousterhout
ouster at cs.stanford.edu
Wed Sep 28 22:42:44 CEST 2016
Before this patch, rte_eal_init invoked rte_openlog_stream, cancelling
any application-specific logger and making it it impossible for an
application to capture the initial log messages generated during
rte_eal_init. With this patch, applications can capture all of the
log messages.
Signed-off-by: John Ousterhout <ouster at cs.stanford.edu>
---
lib/librte_eal/bsdapp/eal/eal_log.c | 3 +--
lib/librte_eal/common/eal_common_log.c | 13 +++++++------
lib/librte_eal/common/include/rte_log.h | 2 +-
lib/librte_eal/linuxapp/eal/eal_log.c | 3 +--
4 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/lib/librte_eal/bsdapp/eal/eal_log.c b/lib/librte_eal/bsdapp/eal/eal_log.c
index a425f7a..c5b1dee 100644
--- a/lib/librte_eal/bsdapp/eal/eal_log.c
+++ b/lib/librte_eal/bsdapp/eal/eal_log.c
@@ -52,6 +52,5 @@ rte_eal_log_init(const char *id __rte_unused, int facility __rte_unused)
int
rte_eal_log_early_init(void)
{
- rte_openlog_stream(stderr);
- return 0;
+ return rte_eal_common_log_init(stderr);
}
diff --git a/lib/librte_eal/common/eal_common_log.c b/lib/librte_eal/common/eal_common_log.c
index 967991a..cfc4c8b 100644
--- a/lib/librte_eal/common/eal_common_log.c
+++ b/lib/librte_eal/common/eal_common_log.c
@@ -48,11 +48,12 @@ struct rte_logs rte_logs = {
.file = NULL,
};
+/* Stream to use for logging if rte_logs.file is NULL */
static FILE *default_log_stream;
/**
* This global structure stores some informations about the message
- * that is currently beeing processed by one lcore
+ * that is currently being processed by one lcore
*/
struct log_cur_msg {
uint32_t loglevel; /**< log level - see rte_log.h */
@@ -68,10 +69,7 @@ static RTE_DEFINE_PER_LCORE(struct log_cur_msg, log_cur_msg);
int
rte_openlog_stream(FILE *f)
{
- if (f == NULL)
- rte_logs.file = default_log_stream;
- else
- rte_logs.file = f;
+ rte_logs.file = f;
return 0;
}
@@ -127,6 +125,8 @@ rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
{
int ret;
FILE *f = rte_logs.file;
+ if (f == NULL)
+ f = default_log_stream;
if ((level > rte_logs.level) || !(logtype & rte_logs.type))
return 0;
@@ -158,7 +158,8 @@ rte_log(uint32_t level, uint32_t logtype, const char *format, ...)
}
/*
- * called by environment-specific log init function
+ * Called during initialization to specify where to log messages if
+ * openlog_stream hasn't been called.
*/
int
rte_eal_common_log_init(FILE *default_log)
diff --git a/lib/librte_eal/common/include/rte_log.h b/lib/librte_eal/common/include/rte_log.h
index 919563c..d99baf3 100644
--- a/lib/librte_eal/common/include/rte_log.h
+++ b/lib/librte_eal/common/include/rte_log.h
@@ -54,7 +54,7 @@ extern "C" {
struct rte_logs {
uint32_t type; /**< Bitfield with enabled logs. */
uint32_t level; /**< Log level. */
- FILE *file; /**< Pointer to current FILE* for logs. */
+ FILE *file; /**< Output file set by rte_openlog_stream, or NULL. */
};
/** Global log informations */
diff --git a/lib/librte_eal/linuxapp/eal/eal_log.c b/lib/librte_eal/linuxapp/eal/eal_log.c
index d391100..aafc41c 100644
--- a/lib/librte_eal/linuxapp/eal/eal_log.c
+++ b/lib/librte_eal/linuxapp/eal/eal_log.c
@@ -136,6 +136,5 @@ rte_eal_log_early_init(void)
printf("Cannot configure early_log_stream\n");
return -1;
}
- rte_openlog_stream(early_log_stream);
- return 0;
+ return rte_eal_common_log_init(early_log_stream);
}
--
2.8.3
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