[v5,4/8] kernel-shark-qt: Make kshark_read_at() non-static.

Commit Message

Yordan Karadzhov Sept. 20, 2018, 4:55 p.m. UTC

kshark_read_at() function provides a thread-safe read of a record from
a specific offset inside the trace.dat file. So far this function was
used only in libkshark.c and was defined static. This patch makes the
function non-static in order to make possible to use it from a plugin.

Signed-off-by: Yordan Karadzhov (VMware) <[e-mail]>
---
 kernel-shark-qt/src/libkshark.c | 12 ++++++++++--
 kernel-shark-qt/src/libkshark.h |  3 +++
 2 files changed, 13 insertions(+), 2 deletions(-)

Patch

diff --git a/kernel-shark-qt/src/libkshark.c b/kernel-shark-qt/src/libkshark.c
index 38d4c3f..3635b48 100644
--- a/kernel-shark-qt/src/libkshark.c
+++ b/kernel-shark-qt/src/libkshark.c
@@ -830,8 +830,16 @@  ssize_t kshark_load_data_records(struct kshark_context *kshark_ctx,
 	return -ENOMEM;
 }
 
-static struct tep_record *kshark_read_at(struct kshark_context *kshark_ctx,
-					 uint64_t offset)
+/**
+ * @brief A thread-safe read of a record from a specific offset.
+ *
+ * @param kshark_ctx: Input location for the session context pointer.
+ * @param offset: the offset into the file to find the record.
+ *
+ * @returns The returned pevent_record must be freed.
+ */
+struct tep_record *kshark_read_at(struct kshark_context *kshark_ctx,
+				  uint64_t offset)
 {
 	/*
 	 * It turns that tracecmd_read_at() is not thread-safe.
diff --git a/kernel-shark-qt/src/libkshark.h b/kernel-shark-qt/src/libkshark.h
index 1165bb1..e846c85 100644
--- a/kernel-shark-qt/src/libkshark.h
+++ b/kernel-shark-qt/src/libkshark.h
@@ -150,6 +150,9 @@  void kshark_free(struct kshark_context *kshark_ctx);
 
 char* kshark_dump_entry(const struct kshark_entry *entry);
 
+struct tep_record *kshark_read_at(struct kshark_context *kshark_ctx,
+				  uint64_t offset);
+
 /** Bit masks used to control the visibility of the entry after filtering. */
 enum kshark_filter_masks {
 	/**