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powerpc/ftrace: Use pr_devel() in ftrace.c 

pr_debug() can now result in code being generated even when #DEBUG
is not defined. That's not really desirable in the ftrace code
which we want to be snappy.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text	   data	    bss	    dec	    hex	filename
   3334	    672	      4	   4010	    faa	arch/powerpc/kernel/ftrace.o

size after:
   text	   data	    bss	    dec	    hex	filename
   2616	    360	      4	   2980	    ba4	arch/powerpc/kernel/ftrace.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2009-05-13 20:30:24 +00:00 коммит произвёл Benjamin Herrenschmidt
Родитель af3e4aca47
Коммит 021376a3b6
1 изменённых файлов: 10 добавлений и 10 удалений
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20
arch/powerpc/kernel/ftrace.c
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@ -157,7 +157,7 @@ __ftrace_make_nop(struct module *mod,
* 0xe8, 0x4c, 0x00, 0x28, ld r2,40(r12) * 0xe8, 0x4c, 0x00, 0x28, ld r2,40(r12)
*/ */
pr_debug("ip:%lx jumps to %lx r2: %lx", ip, tramp, mod->arch.toc); pr_devel("ip:%lx jumps to %lx r2: %lx", ip, tramp, mod->arch.toc);
/* Find where the trampoline jumps to */ /* Find where the trampoline jumps to */
if (probe_kernel_read(jmp, (void *)tramp, sizeof(jmp))) { if (probe_kernel_read(jmp, (void *)tramp, sizeof(jmp))) {
@ -165,7 +165,7 @@ __ftrace_make_nop(struct module *mod,
return -EFAULT; return -EFAULT;
} }
pr_debug(" %08x %08x", jmp[0], jmp[1]); pr_devel(" %08x %08x", jmp[0], jmp[1]);
/* verify that this is what we expect it to be */ /* verify that this is what we expect it to be */
if (((jmp[0] & 0xffff0000) != 0x3d820000) || if (((jmp[0] & 0xffff0000) != 0x3d820000) ||
@ -181,18 +181,18 @@ __ftrace_make_nop(struct module *mod,
offset = ((unsigned)((unsigned short)jmp[0]) << 16) + offset = ((unsigned)((unsigned short)jmp[0]) << 16) +
(int)((short)jmp[1]); (int)((short)jmp[1]);
pr_debug(" %x ", offset); pr_devel(" %x ", offset);
/* get the address this jumps too */ /* get the address this jumps too */
tramp = mod->arch.toc + offset + 32; tramp = mod->arch.toc + offset + 32;
pr_debug("toc: %lx", tramp); pr_devel("toc: %lx", tramp);
if (probe_kernel_read(jmp, (void *)tramp, 8)) { if (probe_kernel_read(jmp, (void *)tramp, 8)) {
printk(KERN_ERR "Failed to read %lx\n", tramp); printk(KERN_ERR "Failed to read %lx\n", tramp);
return -EFAULT; return -EFAULT;
} }
pr_debug(" %08x %08x\n", jmp[0], jmp[1]); pr_devel(" %08x %08x\n", jmp[0], jmp[1]);
ptr = ((unsigned long)jmp[0] << 32) + jmp[1]; ptr = ((unsigned long)jmp[0] << 32) + jmp[1];
@ -269,7 +269,7 @@ __ftrace_make_nop(struct module *mod,
* 0x4e, 0x80, 0x04, 0x20 bctr * 0x4e, 0x80, 0x04, 0x20 bctr
*/ */
pr_debug("ip:%lx jumps to %lx", ip, tramp); pr_devel("ip:%lx jumps to %lx", ip, tramp);
/* Find where the trampoline jumps to */ /* Find where the trampoline jumps to */
if (probe_kernel_read(jmp, (void *)tramp, sizeof(jmp))) { if (probe_kernel_read(jmp, (void *)tramp, sizeof(jmp))) {
@ -277,7 +277,7 @@ __ftrace_make_nop(struct module *mod,
return -EFAULT; return -EFAULT;
} }
pr_debug(" %08x %08x ", jmp[0], jmp[1]); pr_devel(" %08x %08x ", jmp[0], jmp[1]);
/* verify that this is what we expect it to be */ /* verify that this is what we expect it to be */
if (((jmp[0] & 0xffff0000) != 0x3d600000) || if (((jmp[0] & 0xffff0000) != 0x3d600000) ||
@ -293,7 +293,7 @@ __ftrace_make_nop(struct module *mod,
if (tramp & 0x8000) if (tramp & 0x8000)
tramp -= 0x10000; tramp -= 0x10000;
pr_debug(" %lx ", tramp); pr_devel(" %lx ", tramp);
if (tramp != addr) { if (tramp != addr) {
printk(KERN_ERR printk(KERN_ERR
@ -402,7 +402,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
/* ld r2,40(r1) */ /* ld r2,40(r1) */
op[1] = 0xe8410028; op[1] = 0xe8410028;
pr_debug("write to %lx\n", rec->ip); pr_devel("write to %lx\n", rec->ip);
if (probe_kernel_write((void *)ip, op, MCOUNT_INSN_SIZE * 2)) if (probe_kernel_write((void *)ip, op, MCOUNT_INSN_SIZE * 2))
return -EPERM; return -EPERM;
@ -442,7 +442,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
return -EINVAL; return -EINVAL;
} }
pr_debug("write to %lx\n", rec->ip); pr_devel("write to %lx\n", rec->ip);
if (probe_kernel_write((void *)ip, &op, MCOUNT_INSN_SIZE)) if (probe_kernel_write((void *)ip, &op, MCOUNT_INSN_SIZE))
return -EPERM; return -EPERM;