From 97034edb35e92361daaa24512989d00f6c3fd517 Mon Sep 17 00:00:00 2001 From: Paul Selkirk <paul@psgd.org> Date: Mon, 26 Nov 2018 17:26:55 -0500 Subject: Add loop unrolling to bring the profilable mem* functions closer to newlib, because memset is called a LOT in the course of RSA signing, and we need to understand how much time we're actually spending there. --- libraries/libprof/Makefile | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'libraries/libprof/Makefile') diff --git a/libraries/libprof/Makefile b/libraries/libprof/Makefile index 4fe5fb4..37b9a23 100644 --- a/libraries/libprof/Makefile +++ b/libraries/libprof/Makefile @@ -1,12 +1,16 @@ LIB = libprof.a -OBJS = gmon.o profil.o profiler.o +OBJS = gmon.o profil.o profiler.o memfunc.o # Don't profile the profiling code, because that way lies madness (and recursion). CFLAGS := $(subst -pg,,$(CFLAGS)) all: $(LIB) +# But do profile the mem functions +memfunc.o: memfunc.c + $(CC) $(CFLAGS) -pg -c -o $@ $< + %.o : %.c $(CC) $(CFLAGS) -c -o $@ $< -- cgit v1.2.3 From e99737c12cac1fcc8604ac89a14dac5b2606a42d Mon Sep 17 00:00:00 2001 From: Paul Selkirk <paul@psgd.org> Date: Sun, 2 Dec 2018 17:19:44 -0500 Subject: Clean up the profiling code to the point where I stand a chance of understanding it 6 months from now. While I'm at it, try to make it a little more efficient (because 50-60% of time in a typical profiling run is spent in the function-entry counting), and collapse profil.c into gmon.c. --- libraries/libprof/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libraries/libprof/Makefile') diff --git a/libraries/libprof/Makefile b/libraries/libprof/Makefile index 37b9a23..28bedea 100644 --- a/libraries/libprof/Makefile +++ b/libraries/libprof/Makefile @@ -1,6 +1,6 @@ LIB = libprof.a -OBJS = gmon.o profil.o profiler.o memfunc.o +OBJS = gmon.o profiler.o memfunc.o # Don't profile the profiling code, because that way lies madness (and recursion). CFLAGS := $(subst -pg,,$(CFLAGS)) -- cgit v1.2.3