Linus,

RTLA fixes for v7.2:

- Fix missing unistd include

  A missing #include <unistd.h> broke build on uclibc systems.
  Add the include to fix it.

- Fix missing tools/lib/ctype.c dependency

  RTLA links tools/lib/string.c as a dependency of libsubcmd, some of its
  functions require _ctype. Link tools/lib/ctype.c as well, to fix build
  without GCC LTO.


Please pull the latest trace-tools-v7.2-rc2 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace-tools-v7.2-rc2

Tag SHA1: 0fbdab167d0c8809199aadda94ce38ac1e38385a
Head SHA1: cd9993d22a577339a93dcb401574e874ea29b143


Andreas Ziegler (1):
      rtla: Fix missing unistd include

Bastian Blank (1):
      rtla: Also link in ctype.c

----
 tools/tracing/rtla/Makefile     | 14 ++++++++++----
 tools/tracing/rtla/src/common.c |  1 +
 2 files changed, 11 insertions(+), 4 deletions(-)
---------------------------
diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile
index 60a102538988..387bc6cc18f0 100644
--- a/tools/tracing/rtla/Makefile
+++ b/tools/tracing/rtla/Makefile
@@ -45,6 +45,9 @@ else
   LIB_OUTPUT = $(CURDIR)/lib
 endif
 
+LIB_CTYPE = $(LIB_OUTPUT)/ctype.o
+LIB_CTYPE_SRC = $(srctree)/tools/lib/ctype.c
+
 LIB_STRING = $(LIB_OUTPUT)/string.o
 LIB_STRING_SRC = $(srctree)/tools/lib/string.c
 
@@ -117,12 +120,12 @@ tests/bpf/bpf_action_map.o: tests/bpf/bpf_action_map.c
 	$(Q)echo "BPF skeleton support is disabled, skipping tests/bpf/bpf_action_map.o"
 endif
 
-$(RTLA): $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R)
-	$(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R) $(EXTLIBS)
+$(RTLA): $(RTLA_IN) $(LIBSUBCMD) $(LIB_CTYPE) $(LIB_STRING) $(LIB_STR_ERROR_R)
+	$(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(LIBSUBCMD) $(LIB_CTYPE) $(LIB_STRING) $(LIB_STR_ERROR_R) $(EXTLIBS)
 
-static: $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R)
+static: $(RTLA_IN) $(LIBSUBCMD) $(LIB_CTYPE) $(LIB_STRING) $(LIB_STR_ERROR_R)
 	$(eval LDFLAGS += -static)
-	$(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R) $(EXTLIBS)
+	$(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(LIBSUBCMD) $(LIB_CTYPE) $(LIB_STRING) $(LIB_STR_ERROR_R) $(EXTLIBS)
 
 rtla.%: fixdep FORCE
 	make -f $(srctree)/tools/build/Makefile.build dir=. $@
@@ -150,6 +153,9 @@ $(LIB_STR_ERROR_R): $(LIB_STR_ERROR_R_SRC) | $(LIB_OUTPUT)
 $(LIB_STRING): $(LIB_STRING_SRC) | $(LIB_OUTPUT)
 	$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
 
+$(LIB_CTYPE): $(LIB_CTYPE_SRC) | $(LIB_OUTPUT)
+	$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
+
 libsubcmd-clean:
 	$(call QUIET_CLEAN, libsubcmd)
 	$(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
diff --git a/tools/tracing/rtla/src/common.c b/tools/tracing/rtla/src/common.c
index d0a8a6edbf0c..8c7f5e75b2ec 100644
--- a/tools/tracing/rtla/src/common.c
+++ b/tools/tracing/rtla/src/common.c
@@ -5,6 +5,7 @@
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <sys/sysinfo.h>
 
 #include "common.h"

The pull request you sent on Mon, 13 Jul 2026 16:44:41 -0400:

> git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git trace-tools-v7.2-rc2

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/f94f853f6de0d78a68a7de9f57e3b7f9dcdb728b

Thank you!

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