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[SCSI] lpfc: lower stack use in lpfc_fc_frame_check

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according to checkstack the lpfc_fc_frame_check occupies the first
place in stack usage:

make checkstack
objdump -d vmlinux $(find . -name '*.ko') | \
	perl /root/rpmbuild/BUILD/kernel-2.6.32/linux-2.6.32.x86_64/scripts/checkstack.pl x86_64
0x000013f4 lpfc_fc_frame_check [lpfc]:			1936
...
This change makes the rctl_names static, thus not on stack.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Tomas Henzl 2010-12-22 16:52:40 +01:00 committed by James Bottomley
parent 41511704b6
commit 474ffb74c7
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/lpfc/lpfc_sli.c
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@ -11578,7 +11578,8 @@ lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist,
static int
lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
{
char *rctl_names[] = FC_RCTL_NAMES_INIT;
/* make rctl_names static to save stack space */
static char *rctl_names[] = FC_RCTL_NAMES_INIT;
char *type_names[] = FC_TYPE_NAMES_INIT;
struct fc_vft_header *fc_vft_hdr;