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Date: Sat, 26 Nov 2022 04:31:53 +0700
From: Ammar Faizi <ammarfaizi2@...weeb.org>
To: Stefan Roesch <shr@...kernel.io>
Cc: Facebook Kernel Team <kernel-team@...com>,
Jens Axboe <axboe@...nel.dk>,
Olivier Langlois <olivier@...llion01.com>,
Jakub Kicinski <kuba@...nel.org>,
netdev Mailing List <netdev@...r.kernel.org>,
io-uring Mailing List <io-uring@...r.kernel.org>
Subject: Re: [PATCH v5 3/4] liburing: add example programs for napi busy poll
On 11/22/22 2:14 AM, Stefan Roesch wrote:
> This adds two example programs to test the napi busy poll functionality.
> It consists of a client program and a server program. To get a napi id,
> the client and the server program need to be run on different hosts.
>
> To test the napi busy poll timeout, the -t needs to be specified. A
> reasonable value for the busy poll timeout is 100. By specifying the
> busy poll timeout on the server and the client the best results are
> accomplished.
>
> Signed-off-by: Stefan Roesch <shr@...kernel.io>
Since commit:
fd6b571b0b03aeeb529f235c5c9c0a7c3256340c ("github: Add -Wmissing-prototypes for GitHub CI bot")
liburing GitHub CI robot enforces functions and global variables that
are not used outside the translation unit to be marked as static.
This patch fails the build.
GitHub CI says:
clang -Werror -D_GNU_SOURCE -I../src/include/ -g -O3 -Wall -Wextra -Werror -Wmissing-prototypes -o napi-busy-poll-client napi-busy-poll-client.c -L../src/ -luring
clang -Werror -D_GNU_SOURCE -I../src/include/ -g -O3 -Wall -Wextra -Werror -Wmissing-prototypes -o napi-busy-poll-server napi-busy-poll-server.c -L../src/ -luring
napi-busy-poll-client.c:78:6: error: no previous prototype for function 'printUsage' [-Werror,-Wmissing-prototypes]
void printUsage(const char *name)
^
napi-busy-poll-client.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void printUsage(const char *name)
^
static
napi-busy-poll-client.c:102:6: error: no previous prototype for function 'printError' [-Werror,-Wmissing-prototypes]
void printError(const char *msg, int opt)
^
napi-busy-poll-client.c:102:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void printError(const char *msg, int opt)
^
static
napi-busy-poll-client.c:108:6: error: no previous prototype for function 'setProcessScheduler' [-Werror,-Wmissing-prototypes]
void setProcessScheduler(void)
^
napi-busy-poll-client.c:108:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void setProcessScheduler(void)
^
static
napi-busy-poll-client.c:118:8: error: no previous prototype for function 'diffTimespec' [-Werror,-Wmissing-prototypes]
double diffTimespec(const struct timespec *time1, const struct timespec *time0)
^
napi-busy-poll-client.c:118:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
double diffTimespec(const struct timespec *time1, const struct timespec *time0)
^
static
napi-busy-poll-client.c:124:10: error: no previous prototype for function 'encodeUserData' [-Werror,-Wmissing-prototypes]
uint64_t encodeUserData(char type, int fd)
^
napi-busy-poll-client.c:124:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
uint64_t encodeUserData(char type, int fd)
^
static
napi-busy-poll-client.c:129:6: error: no previous prototype for function 'decodeUserData' [-Werror,-Wmissing-prototypes]
void decodeUserData(uint64_t data, char *type, int *fd)
^
napi-busy-poll-client.c:129:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void decodeUserData(uint64_t data, char *type, int *fd)
^
static
napi-busy-poll-client.c:135:13: error: no previous prototype for function 'opTypeToStr' [-Werror,-Wmissing-prototypes]
const char *opTypeToStr(char type)
^
napi-busy-poll-client.c:135:7: note: declare 'static' if the function is not intended to be used outside of this translation unit
const char *opTypeToStr(char type)
^
static
napi-busy-poll-client.c:159:6: error: no previous prototype for function 'reportNapi' [-Werror,-Wmissing-prototypes]
void reportNapi(struct ctx *ctx)
^
napi-busy-poll-client.c:159:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void reportNapi(struct ctx *ctx)
^
static
napi-busy-poll-client.c:173:6: error: no previous prototype for function 'sendPing' [-Werror,-Wmissing-prototypes]
void sendPing(struct ctx *ctx)
^
napi-busy-poll-client.c:173:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void sendPing(struct ctx *ctx)
^
static
napi-busy-poll-client.c:183:6: error: no previous prototype for function 'receivePing' [-Werror,-Wmissing-prototypes]
void receivePing(struct ctx *ctx)
^
napi-busy-poll-client.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void receivePing(struct ctx *ctx)
^
static
napi-busy-poll-client.c:191:6: error: no previous prototype for function 'recordRTT' [-Werror,-Wmissing-prototypes]
void recordRTT(struct ctx *ctx)
^
napi-busy-poll-client.c:191:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void recordRTT(struct ctx *ctx)
^
static
napi-busy-poll-client.c:203:6: error: no previous prototype for function 'printStats' [-Werror,-Wmissing-prototypes]
void printStats(struct ctx *ctx)
^
napi-busy-poll-client.c:203:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void printStats(struct ctx *ctx)
^
static
napi-busy-poll-client.c:230:5: error: no previous prototype for function 'completion' [-Werror,-Wmissing-prototypes]
int completion(struct ctx *ctx, struct io_uring_cqe *cqe)
^
napi-busy-poll-client.c:230:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int completion(struct ctx *ctx, struct io_uring_cqe *cqe)
^
static
13 errors generated.
make[1]: *** [Makefile:38: napi-busy-poll-client] Error 1
make[1]: *** Waiting for unfinished jobs....
napi-busy-poll-server.c:78:6: error: no previous prototype for function 'printUsage' [-Werror,-Wmissing-prototypes]
void printUsage(const char *name)
^
napi-busy-poll-server.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void printUsage(const char *name)
^
static
napi-busy-poll-server.c:104:6: error: no previous prototype for function 'printError' [-Werror,-Wmissing-prototypes]
void printError(const char *msg, int opt)
^
napi-busy-poll-server.c:104:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void printError(const char *msg, int opt)
^
static
napi-busy-poll-server.c:110:6: error: no previous prototype for function 'setProcessScheduler' [-Werror,-Wmissing-prototypes]
void setProcessScheduler()
^
napi-busy-poll-server.c:110:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void setProcessScheduler()
^
static
napi-busy-poll-server.c:120:10: error: no previous prototype for function 'encodeUserData' [-Werror,-Wmissing-prototypes]
uint64_t encodeUserData(char type, int fd)
^
napi-busy-poll-server.c:120:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
uint64_t encodeUserData(char type, int fd)
^
static
napi-busy-poll-server.c:125:6: error: no previous prototype for function 'decodeUserData' [-Werror,-Wmissing-prototypes]
void decodeUserData(uint64_t data, char *type, int *fd)
^
napi-busy-poll-server.c:125:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void decodeUserData(uint64_t data, char *type, int *fd)
^
static
napi-busy-poll-server.c:131:13: error: no previous prototype for function 'opTypeToStr' [-Werror,-Wmissing-prototypes]
const char *opTypeToStr(char type)
^
napi-busy-poll-server.c:131:7: note: declare 'static' if the function is not intended to be used outside of this translation unit
const char *opTypeToStr(char type)
^
static
napi-busy-poll-server.c:155:6: error: no previous prototype for function 'reportNapi' [-Werror,-Wmissing-prototypes]
void reportNapi(struct ctx *ctx)
^
napi-busy-poll-server.c:155:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void reportNapi(struct ctx *ctx)
^
static
napi-busy-poll-server.c:169:6: error: no previous prototype for function 'sendPing' [-Werror,-Wmissing-prototypes]
void sendPing(struct ctx *ctx)
^
napi-busy-poll-server.c:169:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void sendPing(struct ctx *ctx)
^
static
napi-busy-poll-server.c:178:6: error: no previous prototype for function 'receivePing' [-Werror,-Wmissing-prototypes]
void receivePing(struct ctx *ctx)
^
napi-busy-poll-server.c:178:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void receivePing(struct ctx *ctx)
^
static
napi-busy-poll-server.c:193:6: error: no previous prototype for function 'completion' [-Werror,-Wmissing-prototypes]
void completion(struct ctx *ctx, struct io_uring_cqe *cqe)
^
napi-busy-poll-server.c:193:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void completion(struct ctx *ctx, struct io_uring_cqe *cqe)
^
static
10 errors generated.
make[1]: *** [Makefile:38: napi-busy-poll-server] Error 1
make: *** [Makefile:12: all] Error 2
make[1]: Leaving directory '/home/runner/work/liburing/liburing/examples'
Error: Process completed with exit code 2.
--
Ammar Faizi
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