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Allow building with `CFLAGS="-O0"` 

If compiled with -O0, gcc doesn't do any stack frame coalescing
and -Wframe-larger-than=1024 is triggered in debug mode.
Starting with gcc 4.8, new opt level -Og is introduced for debugging, which
does not trigger this warning.

Fix bench zio size, using SPA_OLD_MAXBLOCKSHIFT

Signed-off-by: Gvozden Neskovic <neskovic@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4799
This commit is contained in:
Gvozden Neskovic 2016-06-29 22:31:25 +02:00 committed by Brian Behlendorf
parent 5c27b29605
commit 590c9a0994
2 changed files with 9 additions and 1 deletions
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2
module/zfs/vdev_raidz_math.c
View File

@ -271,7 +271,7 @@ init_raidz_kstat(raidz_impl_kstat_t *rs, const char *name)
#define BENCH_D_COLS (8ULL)
#define BENCH_COLS (BENCH_D_COLS + PARITY_PQR)
#define BENCH_ZIO_SIZE (2ULL << 17) /* 128 kiB */
#define BENCH_ZIO_SIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT) /* 128 kiB */
#define BENCH_NS MSEC2NSEC(25) /* 25ms */
typedef void (*benchmark_fn)(raidz_map_t *rm, const int fn);

8
module/zfs/vdev_raidz_math_scalar.c
View File

@ -211,6 +211,14 @@ static const struct {
#include "vdev_raidz_math_impl.h"
/*
* If compiled with -O0, gcc doesn't do any stack frame coalescing
* and -Wframe-larger-than=1024 is triggered in debug mode.
* Starting with gcc 4.8, new opt level -Og is introduced for debugging, which
* does not trigger this warning.
*/
#pragma GCC diagnostic ignored "-Wframe-larger-than="
DEFINE_GEN_METHODS(scalar);
DEFINE_REC_METHODS(scalar);