[PATCH] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

[PATCH] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

[Adrian Hunter]

Address filtering with kernel symbols incorrectly resulted in the error
"Cannot determine size of symbol" because the no_size logic was the wrong
way around.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.9+
---


I thought I sent this ages ago, but I can't see it anywhere :-/


 tools/perf/util/auxtrace.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index c5a6e0b12452..78bd632f144d 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1826,7 +1826,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		filt->addr = start;
 		if (filt->range && !filt->size && !filt->sym_to) {
 			filt->size = size;
-			no_size = !!size;
+			no_size = !size;
 		}
 	}
 
@@ -1840,7 +1840,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		if (err)
 			return err;
 		filt->size = start + size - filt->addr;
-		no_size = !!size;
+		no_size = !size;
 	}
 
 	/* The very last symbol in kallsyms does not imply a particular size */
-- 
1.9.1

Re: [PATCH] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

[Andi Kleen]

On Fri, Mar 24, 2017 at 02:15:52PM +0200, Adrian Hunter wrote:
> Address filtering with kernel symbols incorrectly resulted in the error
> "Cannot determine size of symbol" because the no_size logic was the wrong
> way around.
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> Cc: stable@vger.kernel.org # v4.9+
> ---

Tested-by: Andi Kleen <ak@linux.intel.com>

Fixes my problems with tracing kernel with PT with filtering.

-Andi

Re: [PATCH] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

[Arnaldo Carvalho de Melo]

Em Fri, Mar 24, 2017 at 04:20:12PM -0700, Andi Kleen escreveu:
> On Fri, Mar 24, 2017 at 02:15:52PM +0200, Adrian Hunter wrote:
> > Address filtering with kernel symbols incorrectly resulted in the error
> > "Cannot determine size of symbol" because the no_size logic was the wrong
> > way around.
> > 
> > Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> > Cc: stable@vger.kernel.org # v4.9+
> > ---
> 
> Tested-by: Andi Kleen <ak@linux.intel.com>

Thanks, applied.

- Arnaldo
 
> Fixes my problems with tracing kernel with PT with filtering.
> 
> -Andi

[tip:perf/core] perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

[tip-bot for Adrian Hunter]

Commit-ID:  c3a0bbc7ad7598dec5a204868bdf8a2b1b51df14
Gitweb:     http://git.kernel.org/tip/c3a0bbc7ad7598dec5a204868bdf8a2b1b51df14
Author:     Adrian Hunter <adrian.hunter@intel.com>
AuthorDate: Fri, 24 Mar 2017 14:15:52 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 27 Mar 2017 11:58:08 -0300

perf auxtrace: Fix no_size logic in addr_filter__resolve_kernel_syms()

Address filtering with kernel symbols incorrectly resulted in the error
"Cannot determine size of symbol" because the no_size logic was the wrong
way around.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Andi Kleen <ak@linux.intel.com>
Cc: stable@vger.kernel.org # v4.9+
Link: http://lkml.kernel.org/r/1490357752-27942-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/auxtrace.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index c5a6e0b1..78bd632 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1826,7 +1826,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		filt->addr = start;
 		if (filt->range && !filt->size && !filt->sym_to) {
 			filt->size = size;
-			no_size = !!size;
+			no_size = !size;
 		}
 	}
 
@@ -1840,7 +1840,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		if (err)
 			return err;
 		filt->size = start + size - filt->addr;
-		no_size = !!size;
+		no_size = !size;
 	}
 
 	/* The very last symbol in kallsyms does not imply a particular size */