From 8d7193b070fb42b299b9a7c40a98056d9132755c Mon Sep 17 00:00:00 2001 From: Liam Howlett Date: Fri, 25 Nov 2022 10:19:18 -0500 Subject: [PATCH] tools: Rename __fallthrough to fallthrough Rename the fallthrough attribute to better align with the kernel version. Copy the definition from include/linux/compiler_attributes.h including the #else clause. Adding the #else clause allows the tools compiler.h header to drop the check for a definition entirely and keeps both definitions together. Change any __fallthrough statements to fallthrough anywhere it was used within perf. This allows other tools to use the same key word as the kernel. Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Mark Rutland Cc: Miguel Ojeda Cc: Rasmus Villemoes Cc: Arnaldo Carvalho de Melo Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Tom Rix Signed-off-by: Liam Howlett --- tools/include/linux/compiler-gcc.h | 6 ++++-- tools/include/linux/compiler.h | 4 ---- tools/perf/builtin-probe.c | 2 +- tools/perf/builtin-stat.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/util/callchain.c | 4 ++-- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 6 +++--- tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c | 2 +- tools/perf/util/ordered-events.c | 2 +- tools/perf/util/strfilter.c | 2 +- tools/perf/util/string.c | 2 +- 11 files changed, 16 insertions(+), 18 deletions(-) diff --git a/tools/include/linux/compiler-gcc.h b/tools/include/linux/compiler-gcc.h index 8816f06fc6c76..62e7c901ac28c 100644 --- a/tools/include/linux/compiler-gcc.h +++ b/tools/include/linux/compiler-gcc.h @@ -12,8 +12,10 @@ + __GNUC_PATCHLEVEL__) #endif -#if GCC_VERSION >= 70000 && !defined(__CHECKER__) -# define __fallthrough __attribute__ ((fallthrough)) +#if __has_attribute(__fallthrough__) +# define fallthrough __attribute__((__fallthrough__)) +#else +# define fallthrough do {} while (0) /* fallthrough */ #endif #if __has_attribute(__error__) diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h index 90ba44a991997..9d36c8ce1fe7f 100644 --- a/tools/include/linux/compiler.h +++ b/tools/include/linux/compiler.h @@ -186,10 +186,6 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s }) -#ifndef __fallthrough -# define __fallthrough -#endif - /* Indirect macros required for expanded argument pasting, eg. __LINE__. */ #define ___PASTE(a, b) a##b #define __PASTE(a, b) ___PASTE(a, b) diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index f62298f5db3b4..8539843d1909b 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -706,7 +706,7 @@ __cmd_probe(int argc, const char **argv) pr_err(" Error: --bootconfig doesn't support uprobes.\n"); return -EINVAL; } - __fallthrough; + fallthrough; case 'a': /* Ensure the last given target is used */ diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 265b051579726..19b0278d496cc 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -616,7 +616,7 @@ static void process_evlist(struct evlist *evlist, unsigned int interval) if (evlist__ctlfd_process(evlist, &cmd) > 0) { switch (cmd) { case EVLIST_CTL_CMD_ENABLE: - __fallthrough; + fallthrough; case EVLIST_CTL_CMD_DISABLE: if (interval) process_interval(); diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 4b3ff7687236e..cfe1cde35528f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -707,7 +707,7 @@ repeat: case -1: if (errno == EINTR) continue; - __fallthrough; + fallthrough; default: c = getc(stdin); tcsetattr(0, TCSAFLUSH, &save); diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index a093a15f048fa..588f86a84eaa3 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -724,7 +724,7 @@ static enum match_result match_chain(struct callchain_cursor_node *node, if (match != MATCH_ERROR) break; /* otherwise fall-back to symbol-based comparison below */ - __fallthrough; + fallthrough; case CCKEY_FUNCTION: if (node->ms.sym && cnode->ms.sym) { /* @@ -745,7 +745,7 @@ static enum match_result match_chain(struct callchain_cursor_node *node, } } /* otherwise fall-back to IP-based comparison below */ - __fallthrough; + fallthrough; case CCKEY_ADDRESS: default: match = match_chain_dso_addresses(cnode->ms.map, cnode->ip, node->ms.map, node->ip); diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index 0ac860c8dd2b8..57dea8074777c 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -3544,7 +3544,7 @@ static int intel_pt_walk_psb(struct intel_pt_decoder *decoder) switch (decoder->packet.type) { case INTEL_PT_TIP_PGD: decoder->continuous_period = false; - __fallthrough; + fallthrough; case INTEL_PT_TIP_PGE: case INTEL_PT_TIP: case INTEL_PT_PTWRITE: @@ -3614,7 +3614,7 @@ static int intel_pt_walk_psb(struct intel_pt_decoder *decoder) decoder->pge = false; decoder->continuous_period = false; intel_pt_clear_tx_flags(decoder); - __fallthrough; + fallthrough; case INTEL_PT_TNT: decoder->have_tma = false; @@ -3978,7 +3978,7 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder) decoder->have_last_ip = false; decoder->last_ip = 0; decoder->ip = 0; - __fallthrough; + fallthrough; case INTEL_PT_STATE_ERR_RESYNC: err = intel_pt_sync_ip(decoder); break; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c index 18f97f43e01a3..af9710622a1fa 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c @@ -730,7 +730,7 @@ int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf, case INTEL_PT_FUP: if (!(packet->count)) return snprintf(buf, buf_len, "%s no ip", name); - __fallthrough; + fallthrough; case INTEL_PT_CYC: case INTEL_PT_VMCS: case INTEL_PT_MTC: diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index b887dfeea673e..8c62611f10aa4 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -284,7 +284,7 @@ static int __ordered_events__flush(struct ordered_events *oe, enum oe_flush how, switch (how) { case OE_FLUSH__FINAL: show_progress = true; - __fallthrough; + fallthrough; case OE_FLUSH__TOP: oe->next_flush = ULLONG_MAX; break; diff --git a/tools/perf/util/strfilter.c b/tools/perf/util/strfilter.c index 78aa4c3b990dc..02807b9d41228 100644 --- a/tools/perf/util/strfilter.c +++ b/tools/perf/util/strfilter.c @@ -274,7 +274,7 @@ static int strfilter_node__sprint(struct strfilter_node *node, char *buf) len = strfilter_node__sprint_pt(node->l, buf); if (len < 0) return len; - __fallthrough; + fallthrough; case '!': if (buf) { *(buf + len++) = *node->p; diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c index 4f12a96f33cc4..cf05b0b56c57b 100644 --- a/tools/perf/util/string.c +++ b/tools/perf/util/string.c @@ -35,7 +35,7 @@ s64 perf_atoll(const char *str) if (*p) goto out_err; - __fallthrough; + fallthrough; case '\0': return length; default: -- 2.50.1