* [PATCH v3] perf expr: Fix return value of ids__new
@ 2021-12-14 1:10 Miaoqian Lin
2021-12-21 8:29 ` Jiri Olsa
2021-12-21 14:19 ` Arnaldo Carvalho de Melo
0 siblings, 2 replies; 4+ messages in thread
From: Miaoqian Lin @ 2021-12-14 1:10 UTC (permalink / raw)
Cc: linmq006, Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
Ian Rogers, Andi Kleen, German Gomez, linux-perf-users,
linux-kernel
callers of ids__new() function only do NULL checking for the return
value. ids__new() calles hashmap__new(), which may return
ERR_PTR(-ENOMEM). Instead of changing the checking one-by-one.
return NULL instead of ERR_PTR(-ENOMEM) to keep
consistent.
---
Changes in v3:
fix compilation error and add tags.
---
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Tested-by: German Gomez <german.gomez@arm.com>
Reviewed-by: German Gomez <german.gomez@arm.com>
---
tools/perf/util/expr.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index 1d532b9fed29..f225247acc01 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -12,6 +12,7 @@
#include "expr-bison.h"
#include "expr-flex.h"
#include "smt.h"
+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/zalloc.h>
#include <ctype.h>
@@ -65,7 +66,12 @@ static bool key_equal(const void *key1, const void *key2,
struct hashmap *ids__new(void)
{
- return hashmap__new(key_hash, key_equal, NULL);
+ struct hashmap *hash;
+
+ hash = hashmap__new(key_hash, key_equal, NULL);
+ if (IS_ERR(hash))
+ return NULL;
+ return hash;
}
void ids__free(struct hashmap *ids)
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH v3] perf expr: Fix return value of ids__new
2021-12-14 1:10 [PATCH v3] perf expr: Fix return value of ids__new Miaoqian Lin
@ 2021-12-21 8:29 ` Jiri Olsa
2021-12-21 14:19 ` Arnaldo Carvalho de Melo
1 sibling, 0 replies; 4+ messages in thread
From: Jiri Olsa @ 2021-12-21 8:29 UTC (permalink / raw)
To: Miaoqian Lin
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Mark Rutland, Alexander Shishkin, Namhyung Kim, Ian Rogers,
Andi Kleen, German Gomez, linux-perf-users, linux-kernel
On Tue, Dec 14, 2021 at 01:10:27AM +0000, Miaoqian Lin wrote:
> callers of ids__new() function only do NULL checking for the return
> value. ids__new() calles hashmap__new(), which may return
> ERR_PTR(-ENOMEM). Instead of changing the checking one-by-one.
> return NULL instead of ERR_PTR(-ENOMEM) to keep
> consistent.
>
> ---
> Changes in v3:
> fix compilation error and add tags.
Acked-by: Jiri Olsa <jolsa@redhat.com>
thanks,
jirka
> ---
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> Tested-by: German Gomez <german.gomez@arm.com>
> Reviewed-by: German Gomez <german.gomez@arm.com>
> ---
> tools/perf/util/expr.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> index 1d532b9fed29..f225247acc01 100644
> --- a/tools/perf/util/expr.c
> +++ b/tools/perf/util/expr.c
> @@ -12,6 +12,7 @@
> #include "expr-bison.h"
> #include "expr-flex.h"
> #include "smt.h"
> +#include <linux/err.h>
> #include <linux/kernel.h>
> #include <linux/zalloc.h>
> #include <ctype.h>
> @@ -65,7 +66,12 @@ static bool key_equal(const void *key1, const void *key2,
>
> struct hashmap *ids__new(void)
> {
> - return hashmap__new(key_hash, key_equal, NULL);
> + struct hashmap *hash;
> +
> + hash = hashmap__new(key_hash, key_equal, NULL);
> + if (IS_ERR(hash))
> + return NULL;
> + return hash;
> }
>
> void ids__free(struct hashmap *ids)
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH v3] perf expr: Fix return value of ids__new
2021-12-14 1:10 [PATCH v3] perf expr: Fix return value of ids__new Miaoqian Lin
2021-12-21 8:29 ` Jiri Olsa
@ 2021-12-21 14:19 ` Arnaldo Carvalho de Melo
2021-12-22 4:25 ` [PATCH v4] " Miaoqian Lin
1 sibling, 1 reply; 4+ messages in thread
From: Arnaldo Carvalho de Melo @ 2021-12-21 14:19 UTC (permalink / raw)
To: Miaoqian Lin
Cc: Peter Zijlstra, Ingo Molnar, Mark Rutland, Alexander Shishkin,
Jiri Olsa, Namhyung Kim, Ian Rogers, Andi Kleen, German Gomez,
linux-perf-users, linux-kernel
Em Tue, Dec 14, 2021 at 01:10:27AM +0000, Miaoqian Lin escreveu:
> callers of ids__new() function only do NULL checking for the return
> value. ids__new() calles hashmap__new(), which may return
> ERR_PTR(-ENOMEM). Instead of changing the checking one-by-one.
> return NULL instead of ERR_PTR(-ENOMEM) to keep
> consistent.
Please don't use --- as a separator inside the commit message, it breaks
scripts that expect it to be a separator from the commit log message to
the diffstat + patch.
Applying after fixing this.
- Arnaldo
> ---
> Changes in v3:
> fix compilation error and add tags.
> ---
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> Tested-by: German Gomez <german.gomez@arm.com>
> Reviewed-by: German Gomez <german.gomez@arm.com>
> ---
> tools/perf/util/expr.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> index 1d532b9fed29..f225247acc01 100644
> --- a/tools/perf/util/expr.c
> +++ b/tools/perf/util/expr.c
> @@ -12,6 +12,7 @@
> #include "expr-bison.h"
> #include "expr-flex.h"
> #include "smt.h"
> +#include <linux/err.h>
> #include <linux/kernel.h>
> #include <linux/zalloc.h>
> #include <ctype.h>
> @@ -65,7 +66,12 @@ static bool key_equal(const void *key1, const void *key2,
>
> struct hashmap *ids__new(void)
> {
> - return hashmap__new(key_hash, key_equal, NULL);
> + struct hashmap *hash;
> +
> + hash = hashmap__new(key_hash, key_equal, NULL);
> + if (IS_ERR(hash))
> + return NULL;
> + return hash;
> }
>
> void ids__free(struct hashmap *ids)
> --
> 2.17.1
--
- Arnaldo
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH v4] perf expr: Fix return value of ids__new
2021-12-21 14:19 ` Arnaldo Carvalho de Melo
@ 2021-12-22 4:25 ` Miaoqian Lin
0 siblings, 0 replies; 4+ messages in thread
From: Miaoqian Lin @ 2021-12-22 4:25 UTC (permalink / raw)
To: acme
Cc: ak, alexander.shishkin, german.gomez, irogers, jolsa, linmq006,
linux-kernel, linux-perf-users, mark.rutland, mingo, namhyung,
peterz
callers of ids__new() function only do NULL checking for the return
value. ids__new() calles hashmap__new(), which may return
ERR_PTR(-ENOMEM). Instead of changing the checking one-by-one.
return NULL instead of ERR_PTR(-ENOMEM) to keep
consistent.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Tested-by: German Gomez <german.gomez@arm.com>
Reviewed-by: German Gomez <german.gomez@arm.com>
---
Changes in v4:
fix the separator in commit message.
---
tools/perf/util/expr.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index 1d532b9fed29..f225247acc01 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -12,6 +12,7 @@
#include "expr-bison.h"
#include "expr-flex.h"
#include "smt.h"
+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/zalloc.h>
#include <ctype.h>
@@ -65,7 +66,12 @@ static bool key_equal(const void *key1, const void *key2,
struct hashmap *ids__new(void)
{
- return hashmap__new(key_hash, key_equal, NULL);
+ struct hashmap *hash;
+
+ hash = hashmap__new(key_hash, key_equal, NULL);
+ if (IS_ERR(hash))
+ return NULL;
+ return hash;
}
void ids__free(struct hashmap *ids)
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
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2021-12-14 1:10 [PATCH v3] perf expr: Fix return value of ids__new Miaoqian Lin
2021-12-21 8:29 ` Jiri Olsa
2021-12-21 14:19 ` Arnaldo Carvalho de Melo
2021-12-22 4:25 ` [PATCH v4] " Miaoqian Lin
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