Debug helpers for BNX2X

Poor-ftrace is too noisy without some blacklisted functions, at least for
bnx2x.

The FP / PC print is useful if you're concerned about running off the stack.

kern/arch/x86/kdebug.c

diff --git a/kern/arch/x86/kdebug.c b/kern/arch/x86/kdebug.c
index 1e6178e..0a145e2 100644
--- a/kern/arch/x86/kdebug.c
+++ b/kern/arch/x86/kdebug.c
@@ -314,6 +314,7 @@
 	while (fp && nr_pcs < nr_slots) {
 		/* could put some sanity checks in here... */
 		pcs[nr_pcs++] = pc;
+		printd("PC %p FP %p\n", pc, fp);
 		if (!is_kaddr((void*)fp))
 			break;
 		/* PC becomes the retaddr - 1.  the -1 is to put our PC back inside the

kern/src/kdebug.c

diff --git a/kern/src/kdebug.c b/kern/src/kdebug.c
index 87f8132..5890731 100644
--- a/kern/src/kdebug.c
+++ b/kern/src/kdebug.c
@@ -62,6 +62,26 @@
 	"limborexmit",
 	"rangecompare",
 	"walkadd",
+	"bnx2x_alloc_rx_data",
+	"bnx2x_frag_alloc",
+	"__dma_map_single",
+	"__dma_mapping_error",
+	"__dma_zalloc_coherent",
+	"__dma_alloc_coherent",
+	"bnx2x_ilt_line_mem_op",
+	"bnx2x_ilt_line_init_op",
+	"bnx2x_ilt_line_wr",
+	"bnx2x_wr_64",
+	"pci_write_config_dword",
+	"bnx2x_init_str_wr",
+	"bnx2x_init_fill",
+	"bnx2x_init_block",
+	"bnx2x_write_big_buf",
+	"bnx2x_init_wr_wb",
+	"bnx2x_write_big_buf_wb",
+	"bnx2x_cl45_read",
+	"bnx2x_cl45_write",
+	"bnx2x_set_mdio_clk",
 };
 
 static bool is_blacklisted(const char *s)