[v2] eal: fix macros to align value
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Commit Message
Found an issue while using RTE_ALIGN_MUL_NEAR with an
expression, like as passed in estimate_tsc_freq().
RTE_ALIGN_MUL_FLOOR resulted in unexpected value as
parathesis are required to evaluate an expression.
Fixes: 5120203d753f ("eal: add macros to align value to multiple")
Cc: stable@dpdk.org
Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
*V2: improved commit message.
lib/librte_eal/include/rte_common.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Comments
24/06/2020 12:20, Harman Kalra:
> Found an issue while using RTE_ALIGN_MUL_NEAR with an
> expression, like as passed in estimate_tsc_freq().
> RTE_ALIGN_MUL_FLOOR resulted in unexpected value as
> parathesis are required to evaluate an expression.
>
> Fixes: 5120203d753f ("eal: add macros to align value to multiple")
> Cc: stable@dpdk.org
>
> Signed-off-by: Harman Kalra <hkalra@marvell.com>
Applied, thanks
@@ -295,7 +295,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
* than the first parameter.
*/
#define RTE_ALIGN_MUL_CEIL(v, mul) \
- (((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
+ ((((v) + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
/**
* Macro to align a value to the multiple of given value. The resultant
@@ -303,7 +303,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
* than the first parameter.
*/
#define RTE_ALIGN_MUL_FLOOR(v, mul) \
- ((v / ((typeof(v))(mul))) * (typeof(v))(mul))
+ (((v) / ((typeof(v))(mul))) * (typeof(v))(mul))
/**
* Macro to align value to the nearest multiple of the given value.
@@ -314,7 +314,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
({ \
typeof(v) ceil = RTE_ALIGN_MUL_CEIL(v, mul); \
typeof(v) floor = RTE_ALIGN_MUL_FLOOR(v, mul); \
- (ceil - v) > (v - floor) ? floor : ceil; \
+ (ceil - (v)) > ((v) - floor) ? floor : ceil; \
})
/**