fb_alloc_cmap_gfp(9)

💖 fb_alloc_cmap_gfp(9) 💖

✨ NAME ✨

fb_alloc_cmap_gfp — allocate a colormap. okay bestie, this one is straight out of the Kernel API Manual, and it's giving “let's make a colormap happen” energy. 💅

🌸 SYNOPSIS 🌸

int fb_alloc_cmap_gfp (struct fb_cmap *cmap , int len , int transp ,
       gfp_t flags );

🎀 ARGUMENTS 🎀

• cmap — frame buffer colormap structure. yes, the actual glow-up target.
• len — length of cmap. literally how long it is.
• transp — boolean, 1 if there is transparency, 0 otherwise. no in-between, bestie.
• flags — flags for kmalloc memory allocation. the little settings for the allocation.

💅 DESCRIPTION 💅

Okay so this function allocates memory for a colormap cmap. and len is the number of entries in the palette — fr fr, that's the count. 💖

Returns negative errno on error, or zero on success. slay when it's zero, cry when it's negative. 😭

🔥 SEE ALSO 🔥

the whole friend group is right here, no cap:

• Kernel file ./drivers/video/fbdev/core/fbcmap.c
• fb_dealloc_cmap(9)
• fb_copy_cmap(9)
• fb_set_cmap(9)
• fb_default_cmap(9)
• fb_invert_cmaps(9)

💌 cute sign-off: this page comes from ./drivers/video/fbdev/core, dated October 2026, and it's literally fb_alloc_cmap_gfp(9). bye bestie, go allocate something cute 🫶✨